.dockerignore

@@ -1,10 +0,0 @@
-.github
-.deepsource.toml
-.goreleaser.yaml
-
-**/.env
-**/.git
-**/.gitignore
-
-**/docker-compose*
-**/Dockerfile*

.env.example

@@ -1,9 +1,5 @@
-EVENTS_CHAIN__GRAPHQL_ENDPOINT=
+export PG_HOST=localhost
-EVENTS_CHAIN__WS_ENDPOINT=
+export PG_PORT=5432
-EVENTS_CHAIN__SYSTEM_ADDRESS=
+export PG_DB=cic_indexer
-EVENTS_CHAIN__TOKEN_INDEX_ADDRESS=
+export PG_USER=postgres
-EVENTS_CHAIN__GAS_FAUCET_ADDRESS=
+export PG_PASSWORD=postgres
-EVENTS_CHAIN__USER_INDEX_ADDRESS=
-EVENTS_SYNCER__INITIAL_LOWER_BOUND=
-EVENTS_POSTGRES__DSN=
-EVENTS_JETSTREAM__ENDPOINT=

.github/workflows/codeql.yml

@@ -1,76 +0,0 @@
-# For most projects, this workflow file will not need changing; you simply need
-# to commit it to your repository.
-#
-# You may wish to alter this file to override the set of languages analyzed,
-# or to provide custom queries or build logic.
-#
-# ******** NOTE ********
-# We have attempted to detect the languages in your repository. Please check
-# the `language` matrix defined below to confirm you have the correct set of
-# supported CodeQL languages.
-#
-name: "CodeQL"
-
-on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "master" ]
-  schedule:
-    - cron: '40 16 * * 3'
-
-jobs:
-  analyze:
-    name: Analyze
-    runs-on: ubuntu-latest
-    permissions:
-      actions: read
-      contents: read
-      security-events: write
-
-    strategy:
-      fail-fast: false
-      matrix:
-        language: [ 'go' ]
-        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
-        # Use only 'java' to analyze code written in Java, Kotlin or both
-        # Use only 'javascript' to analyze code written in JavaScript, TypeScript or both
-        # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
-
-    steps:
-    - name: Checkout repository
-      uses: actions/checkout@v3
-
-    # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
-      with:
-        languages: ${{ matrix.language }}
-        # If you wish to specify custom queries, you can do so here or in a config file.
-        # By default, queries listed here will override any specified in a config file.
-        # Prefix the list here with "+" to use these queries and those in the config file.
-
-        # Details on CodeQL's query packs refer to : https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
-        # queries: security-extended,security-and-quality
-
-
-    # Autobuild attempts to build any compiled languages  (C/C++, C#, Go, or Java).
-    # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
-
-    # ℹ️ Command-line programs to run using the OS shell.
-    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
-
-    #   If the Autobuild fails above, remove it and uncomment the following three lines.
-    #   modify them (or add more) to build your code if your project, please refer to the EXAMPLE below for guidance.
-
-    # - run: |
-    #   echo "Run, Build Application using script"
-    #   ./location_of_script_within_repo/buildscript.sh
-
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
-      with:
-        category: "/language:${{matrix.language}}"

.github/workflows/release.yaml

@@ -1,100 +1,35 @@
-name: release
+name: goreleaser
 
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
 
 jobs:
-  docker:
-    runs-on: ubuntu-latest
-    steps:
-
-    - name: Set up QEMU
-      uses: docker/setup-qemu-action@v2
-
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v2        
-
-    - name:  Check out repo
-      uses: actions/checkout@v3
-      with:
-        fetch-depth: 0
-
-    - name: Cache Docker layers
-      uses: actions/cache@v3
-      with:
-        path: /tmp/.buildx-cache
-        key: ${{ runner.os }}-buildx-${{ github.sha }}
-        restore-keys: |
-          ${{ runner.os }}-buildx-      
-
-    - name: Login to GHCR Docker registry
-      uses: docker/login-action@v1
-      with: 
-        registry: ghcr.io
-        username: ${{ github.repository_owner }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-
-    - name: Set outputs
-      run: |
-        echo "RELEASE_TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV \
-        && echo "RELEASE_SHORT_COMMIT=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
-
-    - name: Build and push image
-      uses: docker/build-push-action@v2
-      with:
-        context: ./
-        file: ./Dockerfile
-        platforms: linux/amd64
-        push: true
-        build-args: |-
-          BUILD_COMMIT=${{ env.RELEASE_SHORT_COMMIT }}        
-        cache-from: type=local,src=/tmp/.buildx-cache
-        cache-to: type=local,dest=/tmp/.buildx-cache
-        tags: |
-          ghcr.io/grassrootseconomics/cic-chain-events/cic-chain-events:latest
-          ghcr.io/grassrootseconomics/cic-chain-events/cic-chain-events:${{ env.RELEASE_TAG }}
-
   goreleaser:
     runs-on: ubuntu-latest
-    container:
-      image: goreleaser/goreleaser-cross
     environment: build
-
     steps:
-
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v2
         with:
           fetch-depth: 0
 
-      - uses: actions/cache@v3
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/.cache/go-build
-            ~/Library/Caches/go-build
-            %LocalAppData%\go-build
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-          
-
-      - name: Workaround Git Security Warning
-        run: |
-          # Workaround a bug in github actions:
-          # https://github.com/actions/runner-images/issues/6775.
-          git config --global --add safe.directory "$GITHUB_WORKSPACE"          
-
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v2
         with:
-          go-version: 'stable'
+          go-version: 1.19.3
 
+      - name: Login to Docker Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:
           version: latest
-          args: release --rm-dist
+          args: --parallelism 1 --rm-dist --skip-validate
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,5 +1,2 @@
 covprofile
 .env
-.env.test
-cic-chain-events
-profiles

.goreleaser

@@ -0,0 +1,33 @@
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+    goarch:
+      - amd64
+    main: ./cmd
+    ldflags:
+      - -s -w
+
+archives:
+  - format: tar.gz
+    files:
+      - LICENSE
+      - config.toml
+      - queries.sql
+      - migrations/*
+
+dockers:
+  - goos: linux
+    goarch: amd64
+    ids:
+    - cic-chain-events
+    image_templates:
+    - "ghcr.io/grassrootseconomics/cic-chain-events/cic-chain-events:latest"
+    - "ghcr.io/grassrootseconomics/cic-chain-events/cic-chain-events:{{ .Tag }}"
+    dockerfile: Dockerfile
+    extra_files:
+    - LICENSE
+    - config.toml
+    - queries.sql
+    - migrations/*

.goreleaser.yaml

@@ -1,21 +0,0 @@
-builds:
-  - id: linux-amd64
-    env:
-      - CGO_ENABLED=1
-      - CC=x86_64-linux-gnu-gcc
-      - CXX=x86_64-linux-gnu-g++
-    goos:
-      - linux
-    goarch:
-      - amd64
-    main: ./cmd/service
-    ldflags:
-      - -X main.build={{.ShortCommit}} -s -w
-
-archives:
-  - format: tar.gz
-    files:
-      - LICENSE
-      - config.toml
-      - queries.sql
-      - migrations/

Dockerfile

@@ -1,33 +1,15 @@
-FROM golang:1-bullseye as build
+FROM debian:11-slim
 
-ENV CGO_ENABLED=1
+RUN set -x && apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
-ENV GOOS=linux
+    ca-certificates && \
-ENV GOARCH=amd64
+    rm -rf /var/lib/apt/lists/*
 
-ENV BUILD_COMMIT=${BUILD_COMMIT}
+WORKDIR /cic-chain-events
 
-WORKDIR /build
+COPY cic-chain-events .
-
-COPY go.* .
-RUN go mod download
-
-COPY . .
-RUN go build -o cic-chain-events -ldflags="-X main.build=${BUILD_COMMIT} -s -w" cmd/service/*
-
-
-FROM debian:bullseye-slim
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-WORKDIR /service
-
-COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=build /build/cic-chain-events .
-COPY migrations migrations/
 COPY config.toml .
 COPY queries.sql .
 COPY LICENSE .
-
+COPY migrations migrations/
-EXPOSE 5000
 
 CMD ["./cic-chain-events"]

Makefile

@@ -1,17 +0,0 @@
-BIN := cic-chain-events
-BUILD_CONF := CGO_ENABLED=1 GOOS=linux GOARCH=amd64
-BUILD_COMMIT := $(shell git rev-parse --short HEAD 2> /dev/null)
-
-.PHONY: build
-
-clean:
-	rm ${BIN}
-
-build:
-	${BUILD_CONF} go build -ldflags="-X main.build=${BUILD_COMMIT} -s -w" -o ${BIN} cmd/service/*.go
-
-run:
-	${BUILD_CONF} go run cmd/service/*
-
-run-debug:
-	${BUILD_CONF} go run cmd/service/* -debug

README.md

@@ -1,18 +0,0 @@
-# cic-chain-events
-
-![GitHub release (latest by date)](https://img.shields.io/github/v/release/grassrootseconomics/cic-chain-events)
-![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/grassrootseconomics/cic-chain-events/release.yaml)
-[![Go Report Card](https://goreportcard.com/badge/github.com/grassrootseconomics/cic-chain-events)](https://goreportcard.com/report/github.com/grassrootseconomics/cic-chain-events)
-
-> CIC Chain Events
-
-Filters live (and past) transactions on Celo and emits relevant events to a NATS JetStream sink for further processing/indexing.
-
-## Documentation
-
-- [Functionality](docs/functionality.md)
-- [Usage](docs/usage.md)
-
-## License
-
-[AGPL-3.0](LICENSE).

cmd/api.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"github.com/VictoriaMetrics/metrics"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/echopprof"
 	"github.com/labstack/echo/v4"
 )
 
@@ -18,7 +17,5 @@ func initApiServer() *echo.Echo {
 		})
 	}
 
-	echopprof.Wrap(server)
-
 	return server
 }

cmd/filters.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
+)
+
+func initAddressFilter() filter.Filter {
+	return filter.NewAddressFilter(filter.AddressFilterOpts{
+		Logg: lo,
+	})
+}
+
+func initTransferFilter() filter.Filter {
+	return filter.NewTransferFilter(filter.TransferFilterOpts{
+		Logg: lo,
+	})
+}
+
+func initNoopFilter() filter.Filter {
+	return filter.NewNoopFilter(filter.NoopFilterOpts{
+		Logg: lo,
+	})
+}

cmd/init.go

@@ -0,0 +1,85 @@
+package main
+
+import (
+	"strings"
+
+	"github.com/alitto/pond"
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
+	"github.com/grassrootseconomics/cic-chain-events/internal/pool"
+	"github.com/grassrootseconomics/cic-chain-events/internal/store"
+	"github.com/jackc/pgx/v5"
+	"github.com/knadh/goyesql/v2"
+	"github.com/knadh/koanf"
+	"github.com/knadh/koanf/parsers/toml"
+	"github.com/knadh/koanf/providers/env"
+	"github.com/knadh/koanf/providers/file"
+	"github.com/zerodha/logf"
+)
+
+func initLogger(debug bool) logf.Logger {
+	loggOpts := logf.Opts{
+		EnableColor: true,
+	}
+
+	if debug {
+		loggOpts.Level = logf.DebugLevel
+	}
+
+	return logf.New(loggOpts)
+}
+
+func initConfig(configFilePath string) *koanf.Koanf {
+	var (
+		ko = koanf.New(".")
+	)
+
+	confFile := file.Provider(configFilePath)
+	if err := ko.Load(confFile, toml.Parser()); err != nil {
+		lo.Fatal("could not load config file", "error", err)
+	}
+
+	if err := ko.Load(env.Provider("", ".", func(s string) string {
+		return strings.ReplaceAll(strings.ToLower(
+			strings.TrimPrefix(s, "")), "_", ".")
+	}), nil); err != nil {
+		lo.Fatal("could not override config from env vars", "error", err)
+	}
+
+	return ko
+}
+
+func initQueries(queriesPath string) goyesql.Queries {
+	queries, err := goyesql.ParseFile(queriesPath)
+	if err != nil {
+		lo.Fatal("could not load queries file", "error", err)
+	}
+
+	return queries
+}
+
+func initPgStore() (store.Store[pgx.Rows], error) {
+	pgStore, err := store.NewPostgresStore(store.PostgresStoreOpts{
+		DSN:               ko.MustString("postgres.dsn"),
+		InitialLowerBound: uint64(ko.MustInt64("indexer.initial_lower_bound")),
+		Logg:              lo,
+		Queries:           q,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return pgStore, nil
+}
+
+func initWorkerPool() *pond.WorkerPool {
+	return pool.NewPool(pool.Opts{
+		ConcurrencyFactor: ko.MustInt("indexer.concurrency"),
+		PoolQueueSize:     ko.MustInt("indexer.queue_size"),
+	})
+}
+
+func initFetcher() fetch.Fetch {
+	return fetch.NewGraphqlFetcher(fetch.GraphqlOpts{
+		GraphqlEndpoint: ko.MustString("chain.graphql_endpoint"),
+	})
+}

cmd/main.go

@@ -0,0 +1,131 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"os"
+	"os/signal"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+
+	"github.com/grassrootseconomics/cic-chain-events/internal/api"
+	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
+	"github.com/grassrootseconomics/cic-chain-events/internal/pipeline"
+	"github.com/grassrootseconomics/cic-chain-events/internal/syncer"
+	"github.com/knadh/goyesql/v2"
+	"github.com/knadh/koanf"
+	"github.com/zerodha/logf"
+)
+
+var (
+	confFlag    string
+	debugFlag   bool
+	queriesFlag string
+
+	ko *koanf.Koanf
+	lo logf.Logger
+	q  goyesql.Queries
+)
+
+func init() {
+	flag.StringVar(&confFlag, "config", "config.toml", "Config file location")
+	flag.BoolVar(&debugFlag, "log", true, "Enable debug logging")
+	flag.StringVar(&queriesFlag, "queries", "queries.sql", "Queries file location")
+	flag.Parse()
+
+	lo = initLogger(debugFlag)
+	ko = initConfig(confFlag)
+	q = initQueries(queriesFlag)
+}
+
+func main() {
+	syncerStats := &syncer.Stats{}
+	wg := &sync.WaitGroup{}
+	apiServer := initApiServer()
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	pgStore, err := initPgStore()
+	if err != nil {
+		lo.Fatal("error loading pg store", "error", err)
+	}
+	workerPool := initWorkerPool()
+	graphqlFetcher := initFetcher()
+
+	pipeline := pipeline.NewPipeline(pipeline.PipelineOpts{
+		BlockFetcher: graphqlFetcher,
+		Filters: []filter.Filter{
+			initAddressFilter(),
+			initTransferFilter(),
+			// initNoopFilter(),
+		},
+		Logg:  lo,
+		Store: pgStore,
+	})
+
+	headSyncer, err := syncer.NewHeadSyncer(syncer.HeadSyncerOpts{
+		Logg:       lo,
+		Pipeline:   pipeline,
+		Pool:       workerPool,
+		Stats:      syncerStats,
+		WsEndpoint: ko.MustString("chain.ws_endpoint"),
+	})
+	if err != nil {
+		lo.Fatal("error loading head syncer", "error", err)
+	}
+
+	janitor := syncer.NewJanitor(syncer.JanitorOpts{
+		BatchSize:     uint64(ko.MustInt64("indexer.batch_size")),
+		HeadBlockLag:  uint64(ko.MustInt64("indexer.head_block_lag")),
+		Logg:          lo,
+		Pipeline:      pipeline,
+		Pool:          workerPool,
+		Stats:         syncerStats,
+		Store:         pgStore,
+		SweepInterval: time.Second * time.Duration(ko.MustInt64("indexer.sweep_interval")),
+	})
+
+	apiServer.GET("/stats", api.StatsHandler(syncerStats, workerPool, lo))
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		if err := headSyncer.Start(ctx); err != nil {
+			lo.Fatal("head syncer error", "error", err)
+		}
+	}()
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		if err := janitor.Start(ctx); err != nil {
+			lo.Fatal("janitor error", "error", err)
+		}
+	}()
+
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		lo.Info("starting API server")
+		if err := apiServer.Start(ko.MustString("api.address")); err != nil {
+			if strings.Contains(err.Error(), "Server closed") {
+				lo.Info("shutting down server")
+			} else {
+				lo.Fatal("could not start api server", "err", err)
+			}
+		}
+	}()
+
+	<-ctx.Done()
+	lo.Info("graceful shutdown triggered")
+
+	workerPool.Stop()
+	if err := apiServer.Shutdown(ctx); err != nil {
+		lo.Error("could not gracefully shutdown api server", "err", err)
+	}
+
+	wg.Wait()
+}

cmd/service/filters.go

@@ -1,107 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"math/big"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/grassrootseconomics/w3-celo-patch/module/eth"
-	"github.com/grassrootseconomics/w3-celo-patch/w3types"
-)
-
-func initAddressFilter(celoProvider *celoutils.Provider, cache *sync.Map) filter.Filter {
-	var (
-		tokenIndexEntryCount big.Int
-	)
-
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-
-	registryMap, err := celoProvider.RegistryMap(ctx, celoutils.HexToAddress(ko.MustString("chain.registry_address")))
-	if err != nil {
-		lo.Fatal("init: critical error creating address filter", "error", err)
-	}
-
-	for k, v := range registryMap {
-		cache.Store(strings.ToLower(v.Hex()), k)
-	}
-
-	if err := celoProvider.Client.CallCtx(
-		ctx,
-		eth.CallFunc(w3.MustNewFunc("entryCount()", "uint256"), registryMap[celoutils.TokenIndex]).Returns(&tokenIndexEntryCount),
-	); err != nil {
-		lo.Fatal("init: critical error creating address filter", "error", err)
-	}
-
-	calls := make([]w3types.Caller, tokenIndexEntryCount.Int64())
-	tokenAddresses := make([]common.Address, tokenIndexEntryCount.Int64())
-
-	entrySig := w3.MustNewFunc("entry(uint256 _idx)", "address")
-
-	// TODO: There is a 5MB limit to a RPC batch call size.
-	// Test if 10k entries will raise an error (future proofed for a lot of years)
-	for i := 0; i < int(tokenIndexEntryCount.Int64()); i++ {
-		calls[i] = eth.CallFunc(entrySig, registryMap[celoutils.TokenIndex], new(big.Int).SetInt64(int64(i))).Returns(&tokenAddresses[i])
-	}
-
-	if err := celoProvider.Client.CallCtx(
-		ctx,
-		calls...,
-	); err != nil {
-		lo.Fatal("init: critical error creating address filter", "error", err)
-	}
-
-	for i, v := range tokenAddresses {
-		cache.Store(strings.ToLower(v.Hex()), fmt.Sprintf("TOKEN_%d", i))
-	}
-
-	return filter.NewAddressFilter(filter.AddressFilterOpts{
-		Cache: cache,
-		Logg:  lo,
-	})
-}
-
-func initTransferFilter(pub *pub.Pub) filter.Filter {
-	return filter.NewTransferFilter(filter.TransferFilterOpts{
-		Pub:  pub,
-		Logg: lo,
-	})
-
-}
-
-func initGasGiftFilter(pub *pub.Pub) filter.Filter {
-	return filter.NewGasFilter(filter.GasFilterOpts{
-		Pub:  pub,
-		Logg: lo,
-	})
-}
-
-func initRegisterFilter(pub *pub.Pub) filter.Filter {
-	return filter.NewRegisterFilter(filter.RegisterFilterOpts{
-		Pub:  pub,
-		Logg: lo,
-	})
-}
-
-func initApproveFilter(pub *pub.Pub) filter.Filter {
-	return filter.NewApproveFilter(filter.ApproveFilterOpts{
-		Pub:  pub,
-		Logg: lo,
-	})
-}
-
-func initTokenIndexFilter(cache *sync.Map, pub *pub.Pub) filter.Filter {
-	return filter.NewTokenIndexFilter(filter.TokenIndexFilterOpts{
-		Cache: cache,
-		Pub:   pub,
-		Logg:  lo,
-	})
-}

cmd/service/init.go

@@ -1,150 +0,0 @@
-package main
-
-import (
-	"context"
-	"strings"
-	"time"
-
-	"github.com/alitto/pond"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pool"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/internal/store"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/jackc/pgx/v5"
-	"github.com/knadh/goyesql/v2"
-	"github.com/knadh/koanf/parsers/toml"
-	"github.com/knadh/koanf/providers/env"
-	"github.com/knadh/koanf/providers/file"
-	"github.com/knadh/koanf/v2"
-	"github.com/nats-io/nats.go"
-	"github.com/zerodha/logf"
-)
-
-func initLogger() logf.Logger {
-	loggOpts := logf.Opts{}
-
-	if debugFlag {
-		loggOpts.EnableColor = true
-		loggOpts.EnableColor = true
-		loggOpts.Level = logf.DebugLevel
-	}
-
-	return logf.New(loggOpts)
-}
-
-func initConfig() *koanf.Koanf {
-	var (
-		ko = koanf.New(".")
-	)
-
-	confFile := file.Provider(confFlag)
-	if err := ko.Load(confFile, toml.Parser()); err != nil {
-		lo.Fatal("init: could not load config file", "error", err)
-	}
-
-	if err := ko.Load(env.Provider("EVENTS_", ".", func(s string) string {
-		return strings.ReplaceAll(strings.ToLower(
-			strings.TrimPrefix(s, "EVENTS_")), "__", ".")
-	}), nil); err != nil {
-		lo.Fatal("init: could not override config from env vars", "error", err)
-	}
-
-	if debugFlag {
-		ko.Print()
-	}
-
-	return ko
-}
-
-func initQueries(queriesPath string) goyesql.Queries {
-	queries, err := goyesql.ParseFile(queriesPath)
-	if err != nil {
-		lo.Fatal("init: could not load queries file", "error", err)
-	}
-
-	return queries
-}
-
-func initPgStore(migrationsPath string, queries goyesql.Queries) store.Store[pgx.Rows] {
-	pgStore, err := store.NewPostgresStore(store.PostgresStoreOpts{
-		MigrationsFolderPath: migrationsPath,
-		DSN:                  ko.MustString("postgres.dsn"),
-		InitialLowerBound:    uint64(ko.MustInt64("syncer.initial_lower_bound")),
-		Logg:                 lo,
-		Queries:              queries,
-	})
-	if err != nil {
-		lo.Fatal("init: critical error loading chain provider", "error", err)
-	}
-
-	return pgStore
-}
-
-func initFetcher() fetch.Fetch {
-	return fetch.NewGraphqlFetcher(fetch.GraphqlOpts{
-		GraphqlEndpoint: ko.MustString("chain.graphql_endpoint"),
-	})
-}
-
-func initJanitorWorkerPool(ctx context.Context) *pond.WorkerPool {
-	return pool.NewPool(ctx, pool.Opts{
-		Concurrency: ko.MustInt("syncer.janitor_concurrency"),
-		QueueSize:   ko.MustInt("syncer.janitor_queue_size"),
-	})
-}
-
-func initHeadSyncerWorkerPool(ctx context.Context) *pond.WorkerPool {
-	return pool.NewPool(ctx, pool.Opts{
-		Concurrency: 1,
-		QueueSize:   1,
-	})
-}
-
-func initJetStream() (*nats.Conn, nats.JetStreamContext) {
-	natsConn, err := nats.Connect(ko.MustString("jetstream.endpoint"))
-	if err != nil {
-		lo.Fatal("init: critical error connecting to NATS", "error", err)
-	}
-
-	js, err := natsConn.JetStream()
-	if err != nil {
-		lo.Fatal("init: bad JetStream opts", "error", err)
-
-	}
-
-	return natsConn, js
-}
-
-func initPub(natsConn *nats.Conn, jsCtx nats.JetStreamContext) *pub.Pub {
-	pub, err := pub.NewPub(pub.PubOpts{
-		DedupDuration:   time.Duration(ko.MustInt("jetstream.dedup_duration_hrs")) * time.Hour,
-		JsCtx:           jsCtx,
-		NatsConn:        natsConn,
-		PersistDuration: time.Duration(ko.MustInt("jetstream.persist_duration_hrs")) * time.Hour,
-	})
-	if err != nil {
-		lo.Fatal("init: critical error bootstrapping pub", "error", err)
-	}
-
-	return pub
-}
-
-func initCeloProvider() *celoutils.Provider {
-	providerOpts := celoutils.ProviderOpts{
-		RpcEndpoint: ko.MustString("chain.rpc_endpoint"),
-	}
-
-	if ko.Bool("chain.testnet") {
-		providerOpts.ChainId = celoutils.TestnetChainId
-	} else {
-		providerOpts.ChainId = celoutils.MainnetChainId
-	}
-
-	provider, err := celoutils.NewProvider(providerOpts)
-	if err != nil {
-		lo.Fatal("init: critical error loading chain provider", "error", err)
-	}
-
-	return provider
-}

cmd/service/main.go

@@ -1,145 +0,0 @@
-package main
-
-import (
-	"context"
-	"flag"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pipeline"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/internal/syncer"
-	"github.com/knadh/koanf/v2"
-	"github.com/labstack/echo/v4"
-	"github.com/zerodha/logf"
-)
-
-type (
-	internalServicesContainer struct {
-		apiService *echo.Echo
-		pub        *pub.Pub
-	}
-)
-
-var (
-	build string
-
-	confFlag             string
-	debugFlag            bool
-	migrationsFolderFlag string
-	queriesFlag          string
-
-	ko *koanf.Koanf
-	lo logf.Logger
-)
-
-func init() {
-	flag.StringVar(&confFlag, "config", "config.toml", "Config file location")
-	flag.BoolVar(&debugFlag, "debug", false, "Enable debug logging")
-	flag.StringVar(&migrationsFolderFlag, "migrations", "migrations/", "Migrations folder location")
-	flag.StringVar(&queriesFlag, "queries", "queries.sql", "Queries file location")
-	flag.Parse()
-
-	lo = initLogger()
-	ko = initConfig()
-}
-
-func main() {
-	lo.Info("main: starting cic-chain-events", "build", build)
-
-	parsedQueries := initQueries(queriesFlag)
-	graphqlFetcher := initFetcher()
-	pgStore := initPgStore(migrationsFolderFlag, parsedQueries)
-	natsConn, jsCtx := initJetStream()
-	jsPub := initPub(natsConn, jsCtx)
-
-	celoProvider := initCeloProvider()
-	cache := &sync.Map{}
-
-	pipeline := pipeline.NewPipeline(pipeline.PipelineOpts{
-		BlockFetcher: graphqlFetcher,
-		Filters: []filter.Filter{
-			initAddressFilter(celoProvider, cache),
-			initGasGiftFilter(jsPub),
-			initTransferFilter(jsPub),
-			initRegisterFilter(jsPub),
-			initApproveFilter(jsPub),
-			initTokenIndexFilter(cache, jsPub),
-		},
-		Logg:  lo,
-		Store: pgStore,
-	})
-
-	internalServices := &internalServicesContainer{
-		pub: jsPub,
-	}
-	syncerStats := &syncer.Stats{}
-	wg := &sync.WaitGroup{}
-
-	signalCh, closeCh := createSigChannel()
-	defer closeCh()
-
-	ctx, cancel := context.WithCancel(context.Background())
-
-	headSyncer, err := syncer.NewHeadSyncer(syncer.HeadSyncerOpts{
-		Logg:       lo,
-		Pipeline:   pipeline,
-		Pool:       initHeadSyncerWorkerPool(ctx),
-		Stats:      syncerStats,
-		WsEndpoint: ko.MustString("chain.ws_endpoint"),
-	})
-	if err != nil {
-		lo.Fatal("main: crticial error loading head syncer", "error", err)
-	}
-
-	janitor := syncer.NewJanitor(syncer.JanitorOpts{
-		BatchSize:     uint64(ko.MustInt64("syncer.janitor_queue_size")),
-		Logg:          lo,
-		Pipeline:      pipeline,
-		Pool:          initJanitorWorkerPool(ctx),
-		Stats:         syncerStats,
-		Store:         pgStore,
-		SweepInterval: time.Second * time.Duration(ko.MustInt64("syncer.janitor_sweep_interval")),
-	})
-
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
-		if err := headSyncer.Start(ctx); err != nil {
-			lo.Info("main: starting head syncer")
-			lo.Fatal("main: critical error starting head syncer", "error", err)
-		}
-	}()
-
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
-		lo.Info("main: starting janitor")
-		if err := janitor.Start(ctx); err != nil {
-			lo.Fatal("main: critical error starting janitor", "error", err)
-		}
-	}()
-
-	internalServices.apiService = initApiServer()
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
-		host := ko.MustString("service.address")
-		lo.Info("main: starting API server", "host", host)
-		if err := internalServices.apiService.Start(host); err != nil {
-			if strings.Contains(err.Error(), "Server closed") {
-				lo.Info("main: shutting down server")
-			} else {
-				lo.Fatal("main: critical error shutting down server", "err", err)
-			}
-		}
-	}()
-
-	lo.Info("main: graceful shutdown triggered", "signal", <-signalCh)
-	cancel()
-	startGracefulShutdown(context.Background(), internalServices)
-
-	wg.Wait()
-}

cmd/service/utils.go

@@ -1,29 +0,0 @@
-package main
-
-import (
-	"context"
-	"os"
-	"os/signal"
-	"syscall"
-	"time"
-)
-
-func createSigChannel() (chan os.Signal, func()) {
-	signalCh := make(chan os.Signal, 1)
-	signal.Notify(signalCh, os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
-
-	return signalCh, func() {
-		close(signalCh)
-	}
-}
-
-func startGracefulShutdown(ctx context.Context, internalServices *internalServicesContainer) {
-	ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
-	defer cancel()
-
-	internalServices.pub.Close()
-
-	if err := internalServices.apiService.Shutdown(ctx); err != nil {
-		lo.Fatal("Could not gracefully shutdown api server", "err", err)
-	}
-}

config.toml

@@ -1,38 +1,21 @@
 [metrics]
-# Exposes Prometheus metrics
 go_process = true
 
-# API server
+[api]
-[service]
+address = ":8080"
-# Host and port
-address = ":5001"
 
-# Geth API endpoints
 [chain]
-graphql_endpoint = ""
+graphql_endpoint = "https://rpc.celo.grassecon.net/graphql"
-ws_endpoint      = ""
+ws_endpoint      = "wss://ws.celo.grassecon.net"
-rpc_endpoint     = ""
-testnet          = true
-registry_address = ""
 
-# Syncer configs
+[indexer]
-[syncer]
+batch_size          = 200
-# Maximum number of missing blocks pushed into the worker queue every janitor sweep
+concurrency         = 3
-janitor_queue_size     = 250
+head_block_lag      = 5
-# Number of goroutines assigned to the worker pool
+idle_worker_timeout = 1
-janitor_concurrency    = 3
+initial_lower_bound = 17034445
-# Syncer start block
+queue_size          = 1250
-initial_lower_bound    = ""
+sweep_interval      = 10
-# Janitor sweep interval, should take into account concurrency and queue_size
-janitor_sweep_interval = 10
 
 [postgres]
-dsn   = ""
+dsn   = "postgres://postgres:postgres@localhost:5432/cic_chain_events"
-
-# https://docs.nats.io/
-[jetstream]
-endpoint               = ""
-# Duration JetStream should keep the message before GC
-persist_duration_hrs = 48
-# Duration to ignore duplicate transactions (e.g. due to restart)
-dedup_duration_hrs   = 6

docker-compose.yaml

@@ -17,17 +17,6 @@ services:
       interval: 10s
       timeout: 5s
       retries: 5
-  nats:
-    image: nats:2.9
-    restart: unless-stopped
-    command: "-js -sd /nats/data"
-    volumes:
-      - cic-indexer-nats:/nats/data
-    ports:
-      - '4222:4222'
-      - '8222:8222'
 volumes:
   cic-indexer-pg:
     driver: local
-  cic-indexer-nats:
-    driver: local    

docs/functionality.md

@@ -1,38 +0,0 @@
-## Functionality
-
-## Filters
-
-Filters are initialized in `cmd/filters.go` and implemented in `internal/filters/*.go` folder. You will need to modify these files to suite your indexing needs.
-
-The existing implementation demo's tracking Celo stables transfer events and gives a rough idea on how to write filters. The final filter should always emit an event to NATS JetStream.
-
-## Syncers
-
-### Head syncer
-
-The head syncer processes newely produced blocks independently by connecting to the geth websocket endpoint.
-
-### Janitor
-
-The janitor syncer checks for missing (blocks) gaps in the commited block sequence and queues them for processing. It can also function as a historical syncer to process older blocks.
-
-With the default `config.toml`, The janitor can process around 950-1000 blocks/min.
-
-**Ordering**
-
-Missed/historical blocks are not guaranteed to be processed in order, however a low concurrency setting would somewhat give an "in-order" behaviour (not to be relied upon in any case).
-
-## Block fetchers
-
-The default GraphQL block fetcher is the recommended fetcher. An experimental RPC fetcher implementation is also provided as an example.
-
-## Pipeline
-
-The pipeline fetches a whole block with its full transaction and receipt objects, executes all loaded filters serially and finally commits the block number to the db. Blocks are processed atomically by the pipeline; a failure in one of the filters will trigger the janitor to re-queue the block and process the block again.
-
-## Store
-
-The postgres store keeps track of commited blocks and syncer curosors. Schema:
-
-- The `blocks` table keeps track of processed blocks.
-- The `syncer_meta` table keeps track of the lower_bound cursor. Below the lower_bound cursor, all blocks are guarnteed to have been processsed hence it is safe to trim the `blocks` table below that pointer.

docs/usage.md

@@ -1,71 +0,0 @@
-
-## Prerequisites
-
-- Linux OS (amd64) or Docker
-- Postgres >= 14
-- Celo geth with GraphQL API enabled
-- NATS server with JetStream enabled
-
-## Usage
-
-The provided `docker-compose.yaml` is the fastest way to get up and running. Bring up the Postgres and NATS conatiners with `docker-compose up -d`
-
-### 1. Run migrations
-
-Run the SQL migrations inside the `migrations` folder with `psql` or [`tern`](https://github.com/jackc/tern) (recommended).
-
-### 2. Update the config
-
-The base config is described in `config.toml`. Values can be overriden with env variables e.g. to disable metrics, set `METRICS_GO_PROCESS=false`.
-
-### 3. Start the service
-
-**Compiling the binary**
-
-Run `make build` or download pre-compiled binaries from the [releases](https://github.com/grassrootseconomics/cic-chain-events/releases) page.
-
-Then start the service with `./cic-chain-events`
-
-Optional flags:
-
-- `-config` - `config.toml` file path
-- `-debug` - Enable/disable debug level logs
-- `-queries` - `queries.sql` file path
-
-**Docker**
-
-To pull the pre-built docker image:
-
-`docker pull ghcr.io/grassrootseconomics/cic-chain-events/cic-chain-events:latest`
-
-Or to build it:
-
-`DOCKER_BUILDKIT=1 COMPOSE_DOCKER_CLI_BUILD=1 docker-compose -f docker-compose.build.yaml build --progress plain`
-
-### 4. NATS JetStream consumer
-
-A consumer with the following NATS JetStream config is required:
-
-- Durable
-- Stream: `CHAIN.*` (See `config.toml` for stream subjects)
-
-[Benthos](https://benthos.dev) (Benthos can act as a JetStream consumer) example.
-
-```yaml
-# config.yaml
-input:
-  label: jetstream
-  nats_jetstream:
-    urls:
-      - nats://127.0.0.1:4222
-    subject: "CHAIN.*"
-    durable: benthos
-    deliver: all
-output:
-  stdout:
-    codec: lines
-```
-
-Then run:
-
-`benthos -c config.yaml`

go.mod

@@ -1,94 +1,56 @@
 module github.com/grassrootseconomics/cic-chain-events
 
-go 1.20
+go 1.19
 
 require (
-	github.com/VictoriaMetrics/metrics v1.24.0
+	github.com/VictoriaMetrics/metrics v1.23.0
-	github.com/alitto/pond v1.8.3
+	github.com/alitto/pond v1.8.2
-	github.com/celo-org/celo-blockchain v1.7.2
+	github.com/celo-org/celo-blockchain v1.6.1
-	github.com/grassrootseconomics/celoutils v1.4.0
+	github.com/jackc/pgx/v5 v5.2.0
-	github.com/grassrootseconomics/w3-celo-patch v0.2.0
-	github.com/jackc/pgx/v5 v5.4.1
-	github.com/jackc/tern/v2 v2.1.0
 	github.com/knadh/goyesql/v2 v2.2.0
-	github.com/knadh/koanf v1.5.0
+	github.com/knadh/koanf v1.4.5
-	github.com/knadh/koanf/v2 v2.0.1
+	github.com/labstack/echo/v4 v4.2.1
-	github.com/labstack/echo/v4 v4.10.2
+	github.com/stretchr/testify v1.8.1
-	github.com/nats-io/nats.go v1.27.1
-	github.com/stretchr/testify v1.8.4
 	github.com/zerodha/logf v0.5.5
 )
 
 require (
-	filippo.io/edwards25519 v1.0.0-alpha.2 // indirect
-	github.com/Masterminds/goutils v1.1.1 // indirect
-	github.com/Masterminds/semver/v3 v3.2.0 // indirect
-	github.com/Masterminds/sprig/v3 v3.2.3 // indirect
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
-	github.com/VictoriaMetrics/fastcache v1.6.0 // indirect
 	github.com/btcsuite/btcd v0.20.1-beta // indirect
-	github.com/celo-org/celo-bls-go v0.3.3 // indirect
+	github.com/celo-org/celo-bls-go v0.2.4 // indirect
-	github.com/celo-org/celo-bls-go-android v0.3.2 // indirect
-	github.com/celo-org/celo-bls-go-ios v0.3.2 // indirect
-	github.com/celo-org/celo-bls-go-linux v0.3.2 // indirect
-	github.com/celo-org/celo-bls-go-macos v0.3.2 // indirect
-	github.com/celo-org/celo-bls-go-other v0.3.2 // indirect
-	github.com/celo-org/celo-bls-go-windows v0.3.2 // indirect
-	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/deckarep/golang-set v1.8.0 // indirect
+	github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea // indirect
+	github.com/deckarep/golang-set/v2 v2.1.0 // indirect
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/go-ole/go-ole v1.2.5 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/websocket v1.4.2 // indirect
-	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect
-	github.com/hdevalence/ed25519consensus v0.0.0-20201207055737-7fde80a9d5ff // indirect
-	github.com/holiman/bloomfilter/v2 v2.0.3 // indirect
-	github.com/holiman/uint256 v1.2.1 // indirect
-	github.com/huandu/xstrings v1.4.0 // indirect
-	github.com/huin/goupnp v1.0.3 // indirect
-	github.com/imdario/mergo v0.3.13 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
-	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
-	github.com/jackc/puddle/v2 v2.2.0 // indirect
+	github.com/jackc/puddle/v2 v2.1.2 // indirect
-	github.com/jackpal/go-nat-pmp v1.0.2 // indirect
+	github.com/labstack/gommon v0.3.0 // indirect
-	github.com/klauspost/compress v1.16.5 // indirect
-	github.com/labstack/gommon v0.4.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
-	github.com/nats-io/nats-server/v2 v2.9.11 // indirect
-	github.com/nats-io/nkeys v0.4.4 // indirect
-	github.com/nats-io/nuid v1.0.1 // indirect
-	github.com/olekukonko/tablewriter v0.0.5 // indirect
-	github.com/onsi/gomega v1.10.1 // indirect
 	github.com/pelletier/go-toml v1.7.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/tsdb v0.7.1 // indirect
 	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
-	github.com/shopspring/decimal v1.3.1 // indirect
-	github.com/spf13/cast v1.5.0 // indirect
-	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
 	github.com/tklauser/go-sysconf v0.3.5 // indirect
 	github.com/tklauser/numcpus v0.2.2 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fastrand v1.1.0 // indirect
-	github.com/valyala/fasttemplate v1.2.2 // indirect
+	github.com/valyala/fasttemplate v1.2.1 // indirect
 	github.com/valyala/histogram v1.2.0 // indirect
-	golang.org/x/crypto v0.9.0 // indirect
+	go.uber.org/atomic v1.10.0 // indirect
-	golang.org/x/net v0.10.0 // indirect
+	golang.org/x/crypto v0.5.0 // indirect
-	golang.org/x/sync v0.1.0 // indirect
+	golang.org/x/net v0.5.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/sync v0.0.0-20220923202941-7f9b1623fab7 // indirect
-	golang.org/x/text v0.9.0 // indirect
+	golang.org/x/sys v0.4.0 // indirect
-	golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df // indirect
+	golang.org/x/text v0.6.0 // indirect
+	golang.org/x/time v0.2.0 // indirect
 	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -37,19 +37,13 @@ github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
-github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
-github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
-github.com/Masterminds/semver/v3 v3.2.0 h1:3MEsd0SM6jqZojhjLWWeBY+Kcjy9i6MQAeY7YgDP83g=
-github.com/Masterminds/semver/v3 v3.2.0/go.mod h1:qvl/7zhW3nngYb5+80sSMF+FG2BjYrf8m9wsX0PNOMQ=
-github.com/Masterminds/sprig/v3 v3.2.3 h1:eL2fZNezLomi0uOLqjQoN6BfsDD+fyLtgbJMAj9n6YA=
-github.com/Masterminds/sprig/v3 v3.2.3/go.mod h1:rXcFaZ2zZbLRJv/xSysmlgIM1u11eBaRMhvYXJNkGuM=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 h1:fLjPD/aNc3UIOA6tDi6QXUemppXK3P9BI7mr2hd6gx8=
 github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
 github.com/VictoriaMetrics/fastcache v1.6.0 h1:C/3Oi3EiBCqufydp1neRZkqcwmEiuRT9c3fqvvgKm5o=
 github.com/VictoriaMetrics/fastcache v1.6.0/go.mod h1:0qHz5QP0GMX4pfmMA/zt5RgfNuXJrTP0zS7DqpHGGTw=
-github.com/VictoriaMetrics/metrics v1.24.0 h1:ILavebReOjYctAGY5QU2F9X0MYvkcrG3aEn2RKa1Zkw=
+github.com/VictoriaMetrics/metrics v1.23.0 h1:WzfqyzCaxUZip+OBbg1+lV33WChDSu4ssYII3nxtpeA=
-github.com/VictoriaMetrics/metrics v1.24.0/go.mod h1:eFT25kvsTidQFHb6U0oa0rTrDRdz4xTYjpL8+UPohys=
+github.com/VictoriaMetrics/metrics v1.23.0/go.mod h1:rAr/llLpEnAdTehiNlUxKgnjcOuROSzpw0GvjpEbvFc=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/ajstarks/svgo v0.0.0-20180226025133-644b8db467af/go.mod h1:K08gAheRH3/J6wwsYMMT4xOr94bZjxIelGM0+d/wbFw=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@@ -57,9 +51,8 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuy
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
-github.com/alitto/pond v1.8.3 h1:ydIqygCLVPqIX/USe5EaV/aSRXTRXDEI9JwuDdu+/xs=
+github.com/alitto/pond v1.8.2 h1:k0k3GIE7CFLW/kyMJj5DDKLFg1VH09l8skZqg/yJNng=
-github.com/alitto/pond v1.8.3/go.mod h1:CmvIIGd5jKLasGI3D87qDkQxjzChdKMmnXMg3fG6M6Q=
+github.com/alitto/pond v1.8.2/go.mod h1:CmvIIGd5jKLasGI3D87qDkQxjzChdKMmnXMg3fG6M6Q=
-github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156 h1:eMwmnE/GDgah4HI848JfFxHt+iPb26b4zyfspmqY0/8=
 github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
@@ -106,24 +99,13 @@ github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46f
 github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72 h1:fUmDBbSvv1uOzo/t8WaxZMVb7BxJ8JECo5lGoR9c5bA=
 github.com/buraksezer/consistent v0.0.0-20191006190839-693edf70fd72/go.mod h1:OEE5igu/CDjGegM1Jn6ZMo7R6LlV/JChAkjfQQIRLpg=
 github.com/c-bata/go-prompt v0.2.2/go.mod h1:VzqtzE2ksDBcdln8G7mk2RX9QyGjH+OVqOCSiVIqS34=
-github.com/celo-org/celo-blockchain v1.7.2 h1:LjQ+t89inzSK2K9i/twwwW07kIE1ubEVDlrcet+UvLU=
+github.com/celo-org/celo-blockchain v1.6.1 h1:Kv+OXLXwdORDz3aIrGY1oCuw0aYSlK4KH7o8cGxO8FU=
-github.com/celo-org/celo-blockchain v1.7.2/go.mod h1:x5HsfXAfUjxKQfTWzroQSb2HljaQEVgf2/mQVDPIMIY=
+github.com/celo-org/celo-blockchain v1.6.1/go.mod h1:NdcP5idffWajmOP79Q0PCRfaFNTmTdSKBMbngLDxjpQ=
-github.com/celo-org/celo-bls-go v0.3.3 h1:kOkm/BeM0YwHWUTwSLprxhk1IFq/ZjaWVtW6jTZ0+ys=
+github.com/celo-org/celo-bls-go v0.2.4 h1:V1y92kM5IRJWQZ6DCwqiKLW7swmUA5y/dPJ9YbU4HfA=
-github.com/celo-org/celo-bls-go v0.3.3/go.mod h1:eoMAORYWgZ5HOo3Z0bIAv/nbPtj/eArIO0nh7XFx7rk=
+github.com/celo-org/celo-bls-go v0.2.4/go.mod h1:eXUCLXu5F1yfd3M+3VaUk5ZUXaA0sLK2rWdLC1Cfaqo=
-github.com/celo-org/celo-bls-go-android v0.3.2 h1:pa6T14NUaf5S1vkq+90gya4ckVLefl4YtUhQKi22wvI=
-github.com/celo-org/celo-bls-go-android v0.3.2/go.mod h1:cFgtFRH8+6x5b+EyG5SqniXY3aKd03NBSGDgITscX34=
-github.com/celo-org/celo-bls-go-ios v0.3.2 h1:xR+3h80nyB1jRZB7GUChHpX93+iDIywH0qeGhWiZ/6w=
-github.com/celo-org/celo-bls-go-ios v0.3.2/go.mod h1:eaSoMpx29YV5oF7jXVChzJpNfxeZHnAa8G4PjL5CyW0=
-github.com/celo-org/celo-bls-go-linux v0.3.2 h1:je4JIot91S9uPLvh0D2mK3yxbE9VynGhEP56nmer0l4=
-github.com/celo-org/celo-bls-go-linux v0.3.2/go.mod h1:DVpJadg22OrxBtMb0ub6iNVdqDBL/r6EDdWVAA0bHa0=
-github.com/celo-org/celo-bls-go-macos v0.3.2 h1:S5C3kwXXiPlS4pPRr3t7nDeyJVo5lSFMzhfUEaHlg6I=
-github.com/celo-org/celo-bls-go-macos v0.3.2/go.mod h1:mYPuRqGMVxj6yZUeL6Q6ggtP52HPBS1jz+FvBPXQ7QA=
-github.com/celo-org/celo-bls-go-other v0.3.2 h1:Onbcv1FkNl/1TfBI/AfedzTCGAlChOOPEcEvPnE99M4=
-github.com/celo-org/celo-bls-go-other v0.3.2/go.mod h1:tNxZNfekzyT7TdYQbyNPhkfpcYtA3KCU/IKX5FNxM/U=
-github.com/celo-org/celo-bls-go-windows v0.3.2 h1:HpauxEhxeGedvsfZC4aBo8ADlNstihm1gKnVQMmdxuY=
-github.com/celo-org/celo-bls-go-windows v0.3.2/go.mod h1:82GC5iJA9Qw5gynhYqR8ht3J+l/MO8eSNzgSTMI8UdA=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
@@ -145,9 +127,10 @@ github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea h1:j4317fAZh7X6GqbFowYdYdI0L9bwxL07jyPZIdepyZ0=
 github.com/deckarep/golang-set v0.0.0-20180603214616-504e848d77ea/go.mod h1:93vsz/8Wt4joVM7c2AVqh+YRMiUSc14yDtF28KmMOgQ=
-github.com/deckarep/golang-set v1.8.0 h1:sk9/l/KqpunDwP7pSjUg0keiOOLEnOBHzykLrsPppp4=
+github.com/deckarep/golang-set/v2 v2.1.0 h1:g47V4Or+DUdzbs8FxCCmgb6VYd+ptPAngjM6dtGktsI=
-github.com/deckarep/golang-set v1.8.0/go.mod h1:5nI87KwE7wgsBU1F4GKAw2Qod7p5kyS383rP6+o6qqo=
+github.com/deckarep/golang-set/v2 v2.1.0/go.mod h1:VAky9rY/yGXJOLEDv3OMci+7wtDpOF4IN+y82NBOac4=
 github.com/deepmap/oapi-codegen v1.6.0/go.mod h1:ryDa9AgbELGeB+YEXE1dR53yAjHwFvE9iAUlWl9Al3M=
 github.com/deepmap/oapi-codegen v1.8.2/go.mod h1:YLgSKSDv/bZQB7N4ws6luhozi3cEdRktEqrX88CvjIw=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
@@ -169,7 +152,6 @@ github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga
 github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 h1:FtmdgXiUlNeRsoNMFlKLDt+S+6hbjVMEW6RGQ7aUf7c=
 github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
-github.com/frankban/quicktest v1.14.3 h1:FJKSZTDHjyhriyC81FLQ0LY93eSai0ZyR/ZIkd3ZUKE=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -182,13 +164,11 @@ github.com/go-chi/chi/v5 v5.0.0/go.mod h1:BBug9lr0cqtdAhsu6R4AAdvufI0/XBzAQSsUqJ
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-kit/kit v0.9.0 h1:wDJmvq38kDhkVxi50ni9ykkdUr1PKgqKOoi01fa0Mdk=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
 github.com/go-ldap/ldap v3.0.2+incompatible/go.mod h1:qfd9rJvER9Q0/D/Sqn1DfHRoBp40uXYvFoEVrNEPqRc=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
-github.com/go-logfmt/logfmt v0.5.0 h1:TrB8swr/68K7m9CcGut2g3UOihhbcbiMAYiuTXdEih4=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
 github.com/go-ole/go-ole v1.2.5 h1:t4MGB5xEDZvXI+0rMjjsfBsD7yAgp/s9ZDkL1JndXwY=
 github.com/go-ole/go-ole v1.2.5/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0=
@@ -226,7 +206,6 @@ github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QD
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
 github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
@@ -247,7 +226,6 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/gofuzz v1.1.1-0.20200604201612-c04b05f3adfa/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
@@ -255,11 +233,9 @@ github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OI
 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/pprof v0.0.0-20191218002539-d4f498aebedc/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
-github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.1.5 h1:kxhtnfFVi+rYdOALN0B3k9UT86zVJKfBimRaciULW4I=
 github.com/google/uuid v1.1.5/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
-github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
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@@ -444,7 +400,6 @@ github.com/mattn/go-tty v0.0.0-20180907095812-13ff1204f104/go.mod h1:XPvLUNfbS4f
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
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-github.com/minio/highwayhash v1.0.2 h1:Aak5U0nElisjDCfPSG79Tgzkn2gl66NxOMspRrKnA/g=
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@@ -473,17 +428,7 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
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-github.com/nats-io/jwt/v2 v2.3.0 h1:z2mA1a7tIf5ShggOFlR1oBPgd6hGqcDYsISxZByUzdI=
-github.com/nats-io/nats-server/v2 v2.9.11 h1:4y5SwWvWI59V5mcqtuoqKq6L9NDUydOP3Ekwuwl8cZI=
-github.com/nats-io/nats-server/v2 v2.9.11/go.mod h1:b0oVuxSlkvS3ZjMkncFeACGyZohbO4XhSqW1Lt7iRRY=
-github.com/nats-io/nats.go v1.27.1 h1:OuYnal9aKVSnOzLQIzf7554OXMCG7KbaTkCSBHRcSoo=
-github.com/nats-io/nats.go v1.27.1/go.mod h1:XpbWUlOElGwTYbMR7imivs7jJj9GtK7ypv321Wp6pjc=
-github.com/nats-io/nkeys v0.4.4 h1:xvBJ8d69TznjcQl9t6//Q5xXuVhyYiSos6RPtvQNTwA=
-github.com/nats-io/nkeys v0.4.4/go.mod h1:XUkxdLPTufzlihbamfzQ7mw/VGx6ObUs+0bN5sNvt64=
-github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw=
-github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
 github.com/npillmayer/nestext v0.1.3/go.mod h1:h2lrijH8jpicr25dFY+oAJLyzlya6jhnuG+zWp9L0Uk=
-github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
@@ -492,7 +437,6 @@ github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
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 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
-github.com/onsi/ginkgo v1.14.0 h1:2mOpI4JVVPBN+WQRa0WKH2eXR+Ey+uK4n7Zj0aYpIQA=
 github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
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@@ -559,8 +503,6 @@ github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAm
 github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible h1:Bn1aCHHRnjv4Bl16T8rcaFjYSrGrIZvpiGO6P3Q4GpU=
 github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
 github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
-github.com/shopspring/decimal v1.3.1 h1:2Usl1nmF/WZucqkFZhnfFYxxxu8LG21F6nPQBE5gKV8=
-github.com/shopspring/decimal v1.3.1/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
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 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
@@ -569,22 +511,24 @@ github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
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 github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
-github.com/spf13/cast v1.3.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
-github.com/spf13/cast v1.5.0 h1:rj3WzYc11XZaIZMPKmwP96zkFEnnAmV8s6XbB2aY32w=
-github.com/spf13/cast v1.5.0/go.mod h1:SpXXQ5YoyJw6s3/6cMTQuxvgRl3PCJiyaX9p6b155UU=
 github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
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-github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
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-github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 h1:epCh84lMvA70Z7CTTCmYQn2CKbY8j86K7/FAIr141uY=
 github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7/go.mod h1:q4W45IWZaF22tdD+VEXcAWRA037jwmWEB5VWYORlTpc=
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@@ -599,9 +543,8 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/valyala/fastrand v1.1.0 h1:f+5HkLW4rsgzdNoleUOB69hyT9IlD2ZQh9GyDMfb5G8=
 github.com/valyala/fastrand v1.1.0/go.mod h1:HWqCzkrkg6QXT8V2EXWvXCoow7vLwOFN002oeRzjapQ=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
+github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=
 github.com/valyala/fasttemplate v1.2.1/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
-github.com/valyala/fasttemplate v1.2.2 h1:lxLXG0uE3Qnshl9QyaK6XJxMXlQZELvChBOCmQD0Loo=
-github.com/valyala/fasttemplate v1.2.2/go.mod h1:KHLXt3tVN2HBp8eijSv/kGJopbvo7S+qRAEEKiv+SiQ=
 github.com/valyala/histogram v1.2.0 h1:wyYGAZZt3CpwUiIb9AU/Zbllg1llXyrtApRS815OLoQ=
 github.com/valyala/histogram v1.2.0/go.mod h1:Hb4kBwb4UxsaNbbbh+RRz8ZR6pdodR57tzWUS3BUzXY=
 github.com/willf/bitset v1.1.3/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
@@ -609,7 +552,6 @@ github.com/xlab/treeprint v0.0.0-20180616005107-d6fb6747feb6/go.mod h1:ce1O1j6Ut
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 github.com/zerodha/logf v0.5.5 h1:AhxHlixHNYwhFjvlgTv6uO4VBKYKxx2I6SbHoHtWLBk=
 github.com/zerodha/logf v0.5.5/go.mod h1:HWpfKsie+WFFpnUnUxelT6Z0FC6xu9+qt+oXNMPg6y8=
 go.etcd.io/etcd/api/v3 v3.5.4/go.mod h1:5GB2vv4A4AOn3yk7MftYGHkUfGtDHnEraIjym4dYz5A=
@@ -620,6 +562,8 @@ go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
 go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ=
+go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
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 go.uber.org/zap v1.9.1/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
@@ -637,10 +581,8 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
-golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
+golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
-golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
-golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -671,7 +613,6 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -700,10 +641,8 @@ golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v
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-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
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-golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
+golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws=
-golang.org/x/net v0.10.0 h1:X2//UzNDwYmtCLn7To6G58Wr6f5ahEAQgKNzv9Y951M=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -719,9 +658,8 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220923202941-7f9b1623fab7 h1:ZrnxWX62AgTKOSagEqxvb3ffipvEDX2pl7E1TdqLqIc=
-golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
+golang.org/x/sync v0.0.0-20220923202941-7f9b1623fab7/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -775,21 +713,12 @@ golang.org/x/sys v0.0.0-20210420205809-ac73e9fd8988/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210816183151-1e6c022a8912/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20181227161524-e6919f6577db/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@@ -798,15 +727,14 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.6.0 h1:3XmdazWV+ubf7QgHSTWeykHOci5oeekaGJBLkrkaw4k=
-golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
-golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20201208040808-7e3f01d25324/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
+golang.org/x/time v0.2.0 h1:52I/1L54xyEQAYdtcSuxtiT84KGYTBGXwayxmIpNJhE=
+golang.org/x/time v0.2.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180525024113-a5b4c53f6e8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -839,13 +767,11 @@ golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df h1:5Pf6pFKu98ODmgnpvkJ3kFUOQGGLIzLIkbzUHp47618=
-golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.0.0-20181121035319-3f7ecaa7e8ca/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.6.0/go.mod h1:9mxDZsDKxgMAuccQkewq682L+0eCu4dCN2yonUJTCLU=
@@ -903,7 +829,6 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/asn1-ber.v1 v1.0.0-20181015200546-f715ec2f112d/go.mod h1:cuepJuh7vyXfUyUwEgHQXw849cJrilpS5NeIjOWESAw=
@@ -917,7 +842,6 @@ gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce h1:+JknDZhAj8YMt7
 gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
 gopkg.in/square/go-jose.v2 v2.3.1/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
 gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
@@ -932,10 +856,8 @@ gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

internal/api/stats.go

@@ -6,6 +6,7 @@ import (
 	"github.com/alitto/pond"
 	"github.com/grassrootseconomics/cic-chain-events/internal/syncer"
 	"github.com/labstack/echo/v4"
+	"github.com/zerodha/logf"
 )
 
 type statsResponse struct {
@@ -21,6 +22,7 @@ type statsResponse struct {
 func StatsHandler(
 	syncerStats *syncer.Stats,
 	poolStats *pond.WorkerPool,
+	logg logf.Logger,
 ) func(echo.Context) error {
 	return func(ctx echo.Context) error {
 		headCursor := syncerStats.GetHeadCursor()

internal/api/types.go

@@ -8,3 +8,8 @@ type okResp struct {
 	Ok   bool        `json:"ok"`
 	Data interface{} `json:"data"`
 }
+
+type errResp struct {
+	Ok    bool   `json:"ok"`
+	Error string `json:"error"`
+}

internal/fetch/fetch.go

@@ -1,16 +1,14 @@
 package fetch
 
-import "context"
-
 // Fetch defines a block fetcher that must return a full JSON response
 type Fetch interface {
-	Block(ctx context.Context, block uint64) (fetchResponse FetchResponse, err error)
+	Block(block uint64) (fetchResponse FetchResponse, err error)
 }
 
 // Transaction reprsents a JSON object of all important mined transaction information
 type Transaction struct {
 	Block struct {
-		Number    uint64 `json:"number"`
+		Number    uint   `json:"number"`
 		Timestamp string `json:"timestamp"`
 	} `json:"block"`
 	Hash  string `json:"hash"`
@@ -23,8 +21,8 @@ type Transaction struct {
 	} `json:"to"`
 	Value     string `json:"value"`
 	InputData string `json:"inputData"`
-	Status    uint64 `json:"status"`
+	Status    uint   `json:"status"`
-	GasUsed   uint64 `json:"gasUsed"`
+	GasUsed   uint   `json:"gasUsed"`
 }
 
 // BlockResponse represents a full fetch JSON response

internal/fetch/graphql.go

@@ -0,0 +1,63 @@
+package fetch
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+const (
+	contentType  = "application/json"
+	graphqlQuery = `{"query":"{block(number:%d){transactions{block{number,timestamp},hash,index,from{address},to{address},value,inputData,status,gasUsed}}}"}`
+)
+
+type GraphqlOpts struct {
+	GraphqlEndpoint string
+}
+
+type Graphql struct {
+	graphqlEndpoint string
+	httpClient      *http.Client
+}
+
+func NewGraphqlFetcher(o GraphqlOpts) Fetch {
+	return &Graphql{
+		httpClient: &http.Client{
+			Timeout: time.Second * 5,
+		},
+		graphqlEndpoint: o.GraphqlEndpoint,
+	}
+}
+
+func (f *Graphql) Block(blockNumber uint64) (FetchResponse, error) {
+	var (
+		fetchResponse FetchResponse
+	)
+
+	resp, err := f.httpClient.Post(
+		f.graphqlEndpoint,
+		contentType,
+		bytes.NewBufferString(fmt.Sprintf(graphqlQuery, blockNumber)),
+	)
+	if err != nil {
+		return FetchResponse{}, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return FetchResponse{}, fmt.Errorf("error fetching block %s", resp.Status)
+	}
+	defer resp.Body.Close()
+
+	out, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return FetchResponse{}, nil
+	}
+
+	if err := json.Unmarshal(out, &fetchResponse); err != nil {
+		return FetchResponse{}, err
+	}
+
+	return fetchResponse, nil
+}

internal/fetch/graphql_test.go

@@ -0,0 +1,37 @@
+package fetch
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+)
+
+var (
+	graphqlEndpoint = "https://rpc.celo.grassecon.net/graphql"
+)
+
+type itGraphqlTest struct {
+	suite.Suite
+	graphqlFetcher Fetch
+}
+
+func TestPipelineSuite(t *testing.T) {
+	suite.Run(t, new(itGraphqlTest))
+}
+
+func (s *itGraphqlTest) SetupSuite() {
+	s.graphqlFetcher = NewGraphqlFetcher(GraphqlOpts{
+		GraphqlEndpoint: graphqlEndpoint,
+	})
+}
+
+func (s *itGraphqlTest) Test_E2E_Fetch_Existing_Block() {
+	resp, err := s.graphqlFetcher.Block(14974600)
+	s.NoError(err)
+	s.Len(resp.Data.Block.Transactions, 3)
+}
+
+func (s *itGraphqlTest) Test_E2E_Fetch_Non_Existing_Block() {
+	_, err := s.graphqlFetcher.Block(14974600000)
+	s.Error(err)
+}

internal/filter/address_filter.go

@@ -1,34 +1,30 @@
 package filter
 
 import (
-	"context"
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
-	"sync"
-
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
 	"github.com/zerodha/logf"
 )
 
-type (
+const (
-	AddressFilterOpts struct {
+	cUSD = "0x765de816845861e75a25fca122bb6898b8b1282a"
-		Cache *sync.Map
-		Logg  logf.Logger
-	}
-
-	AddressFilter struct {
-		cache *sync.Map
-		logg  logf.Logger
-	}
 )
 
+type AddressFilterOpts struct {
+	Logg logf.Logger
+}
+
+type AddressFilter struct {
+	logg logf.Logger
+}
+
 func NewAddressFilter(o AddressFilterOpts) Filter {
 	return &AddressFilter{
-		cache: o.Cache,
+		logg: o.Logg,
-		logg:  o.Logg,
 	}
 }
 
-func (f *AddressFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
+func (f *AddressFilter) Execute(transaction fetch.Transaction) (bool, error) {
-	if _, found := f.cache.Load(transaction.To.Address); found {
+	if transaction.To.Address == cUSD {
 		return true, nil
 	}
 

internal/filter/address_filter_test.go

@@ -1,69 +0,0 @@
-package filter
-
-import (
-	"context"
-	"sync"
-	"testing"
-
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/stretchr/testify/suite"
-)
-
-type AddressFilterSuite struct {
-	suite.Suite
-	filter Filter
-}
-
-func (s *AddressFilterSuite) SetupSuite() {
-	addressCache := &sync.Map{}
-
-	addressCache.Store("0x6914ba1c49d3c3f32a9e65a0661d7656cb292e9f", "")
-
-	s.filter = NewAddressFilter(AddressFilterOpts{
-		Cache: addressCache,
-	})
-}
-
-func (s *AddressFilterSuite) TestAddresses() {
-	type testCase struct {
-		transactionData fetch.Transaction
-		want            bool
-		wantErr         bool
-	}
-
-	// Generated with eth-encode
-	tests := []testCase{
-		{
-			transactionData: fetch.Transaction{
-				To: struct {
-					Address string "json:\"address\""
-				}{
-					Address: "0x6914ba1c49d3c3f32a9e65a0661d7656cb292e9f",
-				},
-			},
-			want:    true,
-			wantErr: false,
-		},
-		{
-			transactionData: fetch.Transaction{
-				To: struct {
-					Address string "json:\"address\""
-				}{
-					Address: "0x6914ba1c49d3c3f32a9e65a0661d7656cb292e9x",
-				},
-			},
-			want:    false,
-			wantErr: false,
-		},
-	}
-
-	for _, test := range tests {
-		next, err := s.filter.Execute(context.Background(), &test.transactionData)
-		s.NoError(err)
-		s.Equal(test.want, next)
-	}
-}
-
-func TestAddressFilterSuite(t *testing.T) {
-	suite.Run(t, new(AddressFilterSuite))
-}

internal/filter/approve_filter.go

@@ -1,85 +0,0 @@
-package filter
-
-import (
-	"context"
-	"math/big"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/celo-org/celo-blockchain/common/hexutil"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/zerodha/logf"
-)
-
-type (
-	ApproveFilterOpts struct {
-		Logg logf.Logger
-		Pub  *pub.Pub
-	}
-
-	ApproveFilter struct {
-		logg logf.Logger
-		pub  *pub.Pub
-	}
-)
-
-const (
-	approveEventSubject = "CHAIN.approve"
-)
-
-var (
-	approveSig = w3.MustNewFunc("approve(address, uint256)", "bool")
-)
-
-func NewApproveFilter(o ApproveFilterOpts) Filter {
-	return &ApproveFilter{
-		logg: o.Logg,
-		pub:  o.Pub,
-	}
-}
-
-func (f *ApproveFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
-	if len(transaction.InputData) < 10 {
-		return true, nil
-	}
-
-	if transaction.InputData[:10] == "0x095ea7b3" {
-		var (
-			address common.Address
-			value   big.Int
-		)
-
-		if err := approveSig.DecodeArgs(w3.B(transaction.InputData), &address, &value); err != nil {
-			return false, err
-		}
-
-		approveEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			From:            celoutils.ChecksumAddress(transaction.From.Address),
-			To:              address.Hex(),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "approve",
-		}
-
-		if transaction.Status == 1 {
-			approveEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			approveEventSubject,
-			transaction.Hash,
-			approveEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
-	}
-
-	return true, nil
-}

internal/filter/filter.go

@@ -1,12 +1,8 @@
 package filter
 
-import (
+import "github.com/grassrootseconomics/cic-chain-events/internal/fetch"
-	"context"
-
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-)
 
 // Filter defines a read only filter which must return next as true/false or an error
 type Filter interface {
-	Execute(ctx context.Context, inputTransaction *fetch.Transaction) (next bool, err error)
+	Execute(inputTransaction fetch.Transaction) (next bool, err error)
 }

internal/filter/gas_filter.go

@@ -1,80 +0,0 @@
-package filter
-
-import (
-	"context"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/celo-org/celo-blockchain/common/hexutil"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/zerodha/logf"
-)
-
-const (
-	gasEventSubject = "CHAIN.gas"
-)
-
-var (
-	giveToSig = w3.MustNewFunc("giveTo(address)", "uint256")
-)
-
-type (
-	GasFilterOpts struct {
-		Logg logf.Logger
-		Pub  *pub.Pub
-	}
-
-	GasFilter struct {
-		logg logf.Logger
-		pub  *pub.Pub
-	}
-)
-
-func NewGasFilter(o GasFilterOpts) Filter {
-	return &GasFilter{
-		logg: o.Logg,
-		pub:  o.Pub,
-	}
-}
-
-func (f *GasFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
-	if len(transaction.InputData) < 10 {
-		return true, nil
-	}
-
-	if transaction.InputData[:10] == "0x63e4bff4" {
-		var address common.Address
-
-		if err := giveToSig.DecodeArgs(w3.B(transaction.InputData), &address); err != nil {
-			return false, err
-		}
-
-		giveToEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              address.Hex(),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "gas",
-		}
-
-		if transaction.Status == 1 {
-			giveToEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			gasEventSubject,
-			transaction.Hash,
-			giveToEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
-	}
-
-	return true, nil
-}

internal/filter/noop_filter.go

@@ -0,0 +1,25 @@
+package filter
+
+import (
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
+	"github.com/zerodha/logf"
+)
+
+type NoopFilterOpts struct {
+	Logg logf.Logger
+}
+
+type NoopFilter struct {
+	logg logf.Logger
+}
+
+func NewNoopFilter(o NoopFilterOpts) Filter {
+	return &NoopFilter{
+		logg: o.Logg,
+	}
+}
+
+func (f *NoopFilter) Execute(transaction fetch.Transaction) (bool, error) {
+	f.logg.Debug("noop filter", "block", transaction.Block.Number, "index", transaction.Index)
+	return true, nil
+}

internal/filter/register_filter.go

@@ -1,80 +0,0 @@
-package filter
-
-import (
-	"context"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/celo-org/celo-blockchain/common/hexutil"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/zerodha/logf"
-)
-
-const (
-	registerEventSubject = "CHAIN.register"
-)
-
-var (
-	registerSig = w3.MustNewFunc("register(address)", "")
-)
-
-type (
-	RegisterFilterOpts struct {
-		Logg logf.Logger
-		Pub  *pub.Pub
-	}
-
-	RegisterFilter struct {
-		logg logf.Logger
-		pub  *pub.Pub
-	}
-)
-
-func NewRegisterFilter(o RegisterFilterOpts) Filter {
-	return &RegisterFilter{
-		logg: o.Logg,
-		pub:  o.Pub,
-	}
-}
-
-func (f *RegisterFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
-	if len(transaction.InputData) < 10 {
-		return true, nil
-	}
-
-	if transaction.InputData[:10] == "0x4420e486" {
-		var address common.Address
-
-		if err := registerSig.DecodeArgs(w3.B(transaction.InputData), &address); err != nil {
-			return false, err
-		}
-
-		addEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              address.Hex(),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "register",
-		}
-
-		if transaction.Status == 1 {
-			addEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			registerEventSubject,
-			transaction.Hash,
-			addEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
-	}
-
-	return true, nil
-}

internal/filter/token_index_filter.go

@@ -1,84 +0,0 @@
-package filter
-
-import (
-	"context"
-	"strings"
-	"sync"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/celo-org/celo-blockchain/common/hexutil"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/grassrootseconomics/w3-celo-patch"
-	"github.com/zerodha/logf"
-)
-
-const (
-	tokenIndexFilterEventSubject = "CHAIN.tokenAdded"
-)
-
-var (
-	addSig = w3.MustNewFunc("add(address)", "bool")
-)
-
-type (
-	TokenIndexFilterOpts struct {
-		Cache *sync.Map
-		Logg  logf.Logger
-		Pub   *pub.Pub
-	}
-
-	TokenIndexFilter struct {
-		pub   *pub.Pub
-		cache *sync.Map
-		logg  logf.Logger
-	}
-)
-
-func NewTokenIndexFilter(o TokenIndexFilterOpts) Filter {
-	return &TokenIndexFilter{
-		cache: o.Cache,
-		logg:  o.Logg,
-		pub:   o.Pub,
-	}
-}
-
-func (f *TokenIndexFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
-	if len(transaction.InputData) < 10 {
-		return true, nil
-	}
-
-	if transaction.InputData[:10] == "0x0a3b0a4f" {
-		var address common.Address
-
-		if err := addSig.DecodeArgs(w3.B(transaction.InputData), &address); err != nil {
-			return false, err
-		}
-
-		f.cache.Store(strings.ToLower(address.Hex()), transaction.Hash)
-
-		addEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              address.Hex(),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "tokenAdd",
-		}
-
-		if transaction.Status == 1 {
-			addEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			tokenIndexFilterEventSubject,
-			transaction.Hash,
-			addEvent,
-		); err != nil {
-			return false, err
-		}
-	}
-	return true, nil
-}

internal/filter/transfer_filter.go

@@ -1,160 +1,33 @@
 package filter
 
 import (
-	"context"
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
-	"math/big"
-
-	"github.com/celo-org/celo-blockchain/common"
-	"github.com/celo-org/celo-blockchain/common/hexutil"
-	"github.com/grassrootseconomics/celoutils"
-	"github.com/grassrootseconomics/cic-chain-events/internal/pub"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/grassrootseconomics/w3-celo-patch"
 	"github.com/zerodha/logf"
 )
 
-const (
+type TransferFilterOpts struct {
-	transferFilterEventSubject = "CHAIN.transfer"
+	Logg logf.Logger
-)
+}
 
-var (
+type TransferFilter struct {
-	transferSig     = w3.MustNewFunc("transfer(address, uint256)", "bool")
+	logg logf.Logger
-	transferFromSig = w3.MustNewFunc("transferFrom(address, address, uint256)", "bool")
+}
-	mintToSig       = w3.MustNewFunc("mintTo(address, uint256)", "bool")
-)
-
-type (
-	TransferFilterOpts struct {
-		Logg logf.Logger
-		Pub  *pub.Pub
-	}
-
-	TransferFilter struct {
-		logg logf.Logger
-		pub  *pub.Pub
-	}
-)
 
 func NewTransferFilter(o TransferFilterOpts) Filter {
 	return &TransferFilter{
 		logg: o.Logg,
-		pub:  o.Pub,
 	}
 }
 
-func (f *TransferFilter) Execute(_ context.Context, transaction *fetch.Transaction) (bool, error) {
+func (f *TransferFilter) Execute(transaction fetch.Transaction) (bool, error) {
-	if len(transaction.InputData) < 10 {
-		return true, nil
-	}
-
 	switch transaction.InputData[:10] {
 	case "0xa9059cbb":
-		var (
+		f.logg.Info("cUSD transfer", "block", transaction.Block.Number, "index", transaction.Index)
-			to    common.Address
-			value big.Int
-		)
-
-		if err := transferSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
-			return false, err
-		}
-
-		transferEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			From:            celoutils.ChecksumAddress(transaction.From.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              to.Hex(),
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "transfer",
-			Value:           value.Uint64(),
-		}
-
-		if transaction.Status == 1 {
-			transferEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			transferFilterEventSubject,
-			transaction.Hash,
-			transferEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
 	case "0x23b872dd":
-		var (
+		f.logg.Info("cUSD transferFrom", "block", transaction.Block.Number, "index", transaction.Index)
-			from  common.Address
-			to    common.Address
-			value big.Int
-		)
-
-		if err := transferFromSig.DecodeArgs(w3.B(transaction.InputData), &from, &to, &value); err != nil {
-			return false, err
-		}
-
-		transferEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			From:            from.Hex(),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              to.Hex(),
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "transferFrom",
-			Value:           value.Uint64(),
-		}
-
-		if transaction.Status == 1 {
-			transferEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			transferFilterEventSubject,
-			transaction.Hash,
-			transferEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
-	case "0x449a52f8":
-		var (
-			to    common.Address
-			value big.Int
-		)
-
-		if err := mintToSig.DecodeArgs(w3.B(transaction.InputData), &to, &value); err != nil {
-			return false, err
-		}
-
-		transferEvent := &pub.MinimalTxInfo{
-			Block:           transaction.Block.Number,
-			From:            celoutils.ChecksumAddress(transaction.From.Address),
-			Timestamp:       hexutil.MustDecodeUint64(transaction.Block.Timestamp),
-			To:              to.Hex(),
-			ContractAddress: celoutils.ChecksumAddress(transaction.To.Address),
-			TxHash:          transaction.Hash,
-			TxIndex:         transaction.Index,
-			TXType:          "mintTo",
-			Value:           value.Uint64(),
-		}
-
-		if transaction.Status == 1 {
-			transferEvent.Success = true
-		}
-
-		if err := f.pub.Publish(
-			transferFilterEventSubject,
-			transaction.Hash,
-			transferEvent,
-		); err != nil {
-			return false, err
-		}
-
-		return true, nil
 	default:
-		return true, nil
+		f.logg.Info("cUSD otherMethod", "block", transaction.Block.Number, "index", transaction.Index)
 	}
+
+	return true, nil
 }

internal/filter/transfer_filter_test.go

@@ -1,77 +0,0 @@
-package filter
-
-import (
-	"context"
-	"testing"
-
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
-	"github.com/stretchr/testify/suite"
-	"github.com/zerodha/logf"
-)
-
-type TransferFilterSuite struct {
-	suite.Suite
-	filter Filter
-}
-
-func (s *TransferFilterSuite) SetupSuite() {
-	logg := logf.New(
-		logf.Opts{
-			Level: logf.DebugLevel,
-		},
-	)
-
-	s.filter = NewTransferFilter(TransferFilterOpts{
-		Logg: logg,
-	})
-}
-
-func (s *TransferFilterSuite) TestTranfserInputs() {
-	type testCase struct {
-		transactionData fetch.Transaction
-		want            bool
-		wantErr         bool
-	}
-
-	// Generated with eth-encode
-	tests := []testCase{
-		{
-			transactionData: fetch.Transaction{
-				InputData: "0xa9059cbb000000000000000000000000000000000000000000000000000000000000dEaD00000000000000000000000000000000000000000000000000000000000003e8",
-			},
-			want:    true,
-			wantErr: false,
-		},
-		{
-			transactionData: fetch.Transaction{
-				InputData: "0x23b872dd000000000000000000000000000000000000000000000000000000000000dEaD000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000003e8",
-			},
-			want:    true,
-			wantErr: false,
-		},
-		{
-			transactionData: fetch.Transaction{
-				InputData: "0x449a52f8000000000000000000000000000000000000000000000000000000000000dEaD00000000000000000000000000000000000000000000000000000000000003e8",
-			},
-			want:    true,
-			wantErr: false,
-		},
-		{
-			transactionData: fetch.Transaction{
-				InputData: "0x8d72ec9d000000000000000000000000000000000000000000000000000000000000dEaD00000000000000000000000000000000000000000000000000000000000003e8",
-			},
-			want:    false,
-			wantErr: false,
-		},
-	}
-
-	for _, test := range tests {
-		next, err := s.filter.Execute(context.Background(), &test.transactionData)
-		s.NoError(err)
-		s.Equal(test.want, next)
-	}
-}
-
-func TestTransferFilterSuite(t *testing.T) {
-	suite.Run(t, new(TransferFilterSuite))
-}

internal/pipeline/pipeline.go

@@ -1,30 +1,26 @@
 package pipeline
 
 import (
-	"context"
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
-
 	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
 	"github.com/grassrootseconomics/cic-chain-events/internal/store"
-	"github.com/grassrootseconomics/cic-chain-events/pkg/fetch"
 	"github.com/jackc/pgx/v5"
 	"github.com/zerodha/logf"
 )
 
-type (
+type PipelineOpts struct {
-	PipelineOpts struct {
+	BlockFetcher fetch.Fetch
-		BlockFetcher fetch.Fetch
+	Filters      []filter.Filter
-		Filters      []filter.Filter
+	Logg         logf.Logger
-		Logg         logf.Logger
+	Store        store.Store[pgx.Rows]
-		Store        store.Store[pgx.Rows]
+}
-	}
 
-	Pipeline struct {
+type Pipeline struct {
-		fetch   fetch.Fetch
+	fetch   fetch.Fetch
-		filters []filter.Filter
+	filters []filter.Filter
-		logg    logf.Logger
+	logg    logf.Logger
-		store   store.Store[pgx.Rows]
+	store   store.Store[pgx.Rows]
-	}
+}
-)
 
 func NewPipeline(o PipelineOpts) *Pipeline {
 	return &Pipeline{
@@ -35,24 +31,19 @@ func NewPipeline(o PipelineOpts) *Pipeline {
 	}
 }
 
-// Run is the task executor which runs in its own goroutine and does the following:
+// Run is the task executor which fetches and processes a block and its transactions through the pipeline filters
-// 1. Fetches the block and all transactional data
+func (md *Pipeline) Run(blockNumber uint64) error {
-// 2. Passes the block through all filters
+	fetchResp, err := md.fetch.Block(blockNumber)
-// 3. Commits the block to store as successfully processed
-//
-// Note:
-// - Blocks are processed atomically, a failure in-between will process the block from the start
-// - Therefore, any side effect/event sink in the filter should support dedup
-func (md *Pipeline) Run(ctx context.Context, blockNumber uint64) error {
-	fetchResp, err := md.fetch.Block(ctx, blockNumber)
 	if err != nil {
+		md.logg.Error("pipeline block fetch error", "error", err)
 		return err
 	}
 
 	for _, tx := range fetchResp.Data.Block.Transactions {
 		for _, filter := range md.filters {
-			next, err := filter.Execute(ctx, &tx)
+			next, err := filter.Execute(tx)
 			if err != nil {
+				md.logg.Error("pipeline run error", "error", err)
 				return err
 			}
 			if !next {
@@ -61,9 +52,10 @@ func (md *Pipeline) Run(ctx context.Context, blockNumber uint64) error {
 		}
 	}
 
-	if err := md.store.CommitBlock(ctx, blockNumber); err != nil {
+	if err := md.store.CommitBlock(blockNumber); err != nil {
 		return err
 	}
+	md.logg.Debug("successfully commited block", "block", blockNumber)
 
 	return nil
 }

internal/pipeline/pipeline_test.go

@@ -0,0 +1,136 @@
+package pipeline
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/grassrootseconomics/cic-chain-events/internal/fetch"
+	"github.com/grassrootseconomics/cic-chain-events/internal/filter"
+	"github.com/stretchr/testify/suite"
+	"github.com/zerodha/logf"
+)
+
+var (
+	graphqlEndpoint = "https://rpc.celo.grassecon.net/graphql"
+)
+
+type itPipelineTest struct {
+	suite.Suite
+	errorPipeline     *Pipeline
+	normalPipeline    *Pipeline
+	earlyExitPipeline *Pipeline
+}
+
+func TestPipelineSuite(t *testing.T) {
+	suite.Run(t, new(itPipelineTest))
+}
+
+type errorFilter struct{}
+
+func newErrorFilter() filter.Filter {
+	return &errorFilter{}
+}
+
+func (f *errorFilter) Execute(transaction fetch.Transaction) (bool, error) {
+	return false, errors.New("crash")
+}
+
+type earlyExitFilter struct{}
+
+func newEarlyExitFilter() filter.Filter {
+	return &earlyExitFilter{}
+}
+
+func (f *earlyExitFilter) Execute(transaction fetch.Transaction) (bool, error) {
+	return false, nil
+}
+
+func (s *itPipelineTest) SetupSuite() {
+	logger := logf.New(
+		logf.Opts{
+			Level: logf.DebugLevel,
+		},
+	)
+
+	fetcher := fetch.NewGraphqlFetcher(fetch.GraphqlOpts{
+		GraphqlEndpoint: graphqlEndpoint,
+	})
+
+	noopFilter := filter.NewNoopFilter(filter.NoopFilterOpts{
+		Logg: logger,
+	})
+	errFilter := newErrorFilter()
+	earlyFilter := newEarlyExitFilter()
+
+	s.errorPipeline = NewPipeline(PipelineOpts{
+		Filters: []filter.Filter{
+			noopFilter,
+			errFilter,
+		},
+		BlockFetcher: fetcher,
+		Logg:         logger,
+	})
+
+	s.normalPipeline = NewPipeline(PipelineOpts{
+		Filters: []filter.Filter{
+			noopFilter,
+		},
+		BlockFetcher: fetcher,
+		Logg:         logger,
+	})
+
+	s.earlyExitPipeline = NewPipeline(PipelineOpts{
+		Filters: []filter.Filter{
+			noopFilter,
+			earlyFilter,
+			errFilter,
+		},
+		BlockFetcher: fetcher,
+		Logg:         logger,
+	})
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Existing_Block_No_Err() {
+	err := s.normalPipeline.Run(14974600)
+	s.NoError(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Non_Existing_Block_No_Err() {
+	err := s.normalPipeline.Run(14974600000)
+	s.Error(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Existing_Block_Early() {
+	err := s.earlyExitPipeline.Run(14974600)
+	s.NoError(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Existing_Block_With_Err() {
+	err := s.errorPipeline.Run(14974600)
+	s.Error(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Non_Existing_Block_With_Err() {
+	err := s.errorPipeline.Run(14974600000)
+	s.Error(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Non_Existing_Block_Early() {
+	err := s.earlyExitPipeline.Run(14974600000)
+	s.Error(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Empty_Block_With_No_Err() {
+	err := s.normalPipeline.Run(15370320)
+	s.NoError(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Empty_Block_With_Err() {
+	err := s.errorPipeline.Run(15370320)
+	s.NoError(err)
+}
+
+func (s *itPipelineTest) Test_E2E_Pipeline_Run_On_Empty_Block_Early() {
+	err := s.earlyExitPipeline.Run(15370320)
+	s.NoError(err)
+}

internal/pool/pool.go

@@ -1,28 +1,21 @@
 package pool
 
 import (
-	"context"
 	"time"
 
 	"github.com/alitto/pond"
 )
 
-const (
-	idleTimeout = 1 * time.Second
-)
-
 type Opts struct {
-	Concurrency int
+	ConcurrencyFactor int
-	QueueSize   int
+	PoolQueueSize     int
 }
 
-// NewPool creates a fixed size (and buffered) go routine worker pool.
+func NewPool(o Opts) *pond.WorkerPool {
-func NewPool(ctx context.Context, o Opts) *pond.WorkerPool {
 	return pond.New(
-		o.Concurrency,
+		o.ConcurrencyFactor,
-		o.QueueSize,
+		o.PoolQueueSize,
-		pond.MinWorkers(o.Concurrency),
+		pond.MinWorkers(o.ConcurrencyFactor),
-		pond.IdleTimeout(idleTimeout),
+		pond.IdleTimeout(time.Second*1),
-		pond.Context(ctx),
 	)
 }

internal/pub/jetstream.go

@@ -1,83 +0,0 @@
-package pub
-
-import (
-	"encoding/json"
-	"time"
-
-	"github.com/nats-io/nats.go"
-)
-
-const (
-	streamName     string = "CHAIN"
-	streamSubjects string = "CHAIN.*"
-)
-
-type (
-	PubOpts struct {
-		DedupDuration   time.Duration
-		JsCtx           nats.JetStreamContext
-		NatsConn        *nats.Conn
-		PersistDuration time.Duration
-	}
-
-	Pub struct {
-		natsConn *nats.Conn
-		jsCtx    nats.JetStreamContext
-	}
-
-	MinimalTxInfo struct {
-		Block           uint64 `json:"block"`
-		From            string `json:"from"`
-		To              string `json:"to"`
-		ContractAddress string `json:"contractAddress"`
-		Success         bool   `json:"success"`
-		Timestamp       uint64 `json:"timestamp"`
-		TxHash          string `json:"transactionHash"`
-		TxIndex         uint   `json:"transactionIndex"`
-		TXType          string `json:"txType"`
-		Value           uint64 `json:"value"`
-	}
-)
-
-func NewPub(o PubOpts) (*Pub, error) {
-	stream, _ := o.JsCtx.StreamInfo(streamName)
-	if stream == nil {
-		_, err := o.JsCtx.AddStream(&nats.StreamConfig{
-			Name:       streamName,
-			MaxAge:     o.PersistDuration,
-			Storage:    nats.FileStorage,
-			Subjects:   []string{streamSubjects},
-			Duplicates: o.DedupDuration,
-		})
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return &Pub{
-		jsCtx:    o.JsCtx,
-		natsConn: o.NatsConn,
-	}, nil
-}
-
-// Close gracefully shutdowns the JetStream connection.
-func (p *Pub) Close() {
-	if p.natsConn != nil {
-		p.natsConn.Close()
-	}
-}
-
-// Publish publishes the JSON data to the NATS stream.
-func (p *Pub) Publish(subject string, dedupId string, eventPayload interface{}) error {
-	jsonData, err := json.Marshal(eventPayload)
-	if err != nil {
-		return err
-	}
-
-	_, err = p.jsCtx.Publish(subject, jsonData, nats.MsgId(dedupId))
-	if err != nil {
-		return err
-	}
-
-	return nil
-}

internal/store/postgres.go

@@ -3,37 +3,27 @@ package store
 import (
 	"context"
 	"fmt"
-	"os"
-	"time"
 
 	"github.com/jackc/pgx/v5"
 	"github.com/jackc/pgx/v5/pgxpool"
-	"github.com/jackc/tern/v2/migrate"
 	"github.com/knadh/goyesql/v2"
 	"github.com/zerodha/logf"
 )
 
-const (
+type queries struct {
-	schemaTable = "schema_version"
+	CommitBlock         string `query:"commit-block"`
-)
+	GetMissingBlocks    string `query:"get-missing-blocks"`
+	GetSearchBounds     string `query:"get-search-bounds"`
+	InitSyncerMeta      string `query:"init-syncer-meta"`
+	SetSearchLowerBound string `query:"set-search-lower-bound"`
+}
 
-type (
+type PostgresStoreOpts struct {
-	queries struct {
+	DSN               string
-		CommitBlock         string `query:"commit-block"`
+	InitialLowerBound uint64
-		GetMissingBlocks    string `query:"get-missing-blocks"`
+	Logg              logf.Logger
-		GetSearchBounds     string `query:"get-search-bounds"`
+	Queries           goyesql.Queries
-		InitSyncerMeta      string `query:"init-syncer-meta"`
+}
-		SetSearchLowerBound string `query:"set-search-lower-bound"`
-	}
-
-	PostgresStoreOpts struct {
-		DSN                  string
-		MigrationsFolderPath string
-		InitialLowerBound    uint64
-		Logg                 logf.Logger
-		Queries              goyesql.Queries
-	}
-)
 
 type PostgresStore struct {
 	logg    logf.Logger
@@ -55,34 +45,12 @@ func NewPostgresStore(o PostgresStoreOpts) (Store[pgx.Rows], error) {
 		return nil, err
 	}
 
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	dbPool, err := pgxpool.NewWithConfig(context.Background(), parsedConfig)
-	defer cancel()
-
-	dbPool, err := pgxpool.NewWithConfig(ctx, parsedConfig)
 	if err != nil {
 		return nil, err
 	}
 
-	conn, err := dbPool.Acquire(ctx)
+	_, err = dbPool.Exec(context.Background(), postgresStore.queries.InitSyncerMeta, o.InitialLowerBound)
-	if err != nil {
-		return nil, err
-	}
-	defer conn.Release()
-
-	migrator, err := migrate.NewMigrator(ctx, conn.Conn(), schemaTable)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := migrator.LoadMigrations(os.DirFS(o.MigrationsFolderPath)); err != nil {
-		return nil, err
-	}
-
-	if err := migrator.Migrate(ctx); err != nil {
-		return nil, err
-	}
-
-	_, err = dbPool.Exec(ctx, postgresStore.queries.InitSyncerMeta, o.InitialLowerBound)
 	if err != nil {
 		return nil, err
 	}
@@ -92,14 +60,14 @@ func NewPostgresStore(o PostgresStoreOpts) (Store[pgx.Rows], error) {
 	return postgresStore, nil
 }
 
-func (s *PostgresStore) GetSearchBounds(ctx context.Context, batchSize uint64, headCursor uint64, headBlockLag uint64) (uint64, uint64, error) {
+func (s *PostgresStore) GetSearchBounds(batchSize uint64, headCursor uint64, headBlockLag uint64) (uint64, uint64, error) {
 	var (
 		lowerBound uint64
 		upperBound uint64
 	)
 
 	if err := s.pool.QueryRow(
-		ctx,
+		context.Background(),
 		s.queries.GetSearchBounds,
 		batchSize,
 		headCursor,
@@ -112,8 +80,8 @@ func (s *PostgresStore) GetSearchBounds(ctx context.Context, batchSize uint64, h
 	return lowerBound, upperBound, nil
 }
 
-func (s *PostgresStore) GetMissingBlocks(ctx context.Context, lowerBound uint64, upperBound uint64) (pgx.Rows, error) {
+func (s *PostgresStore) GetMissingBlocks(lowerBound uint64, upperBound uint64) (pgx.Rows, error) {
-	rows, err := s.pool.Query(ctx, s.queries.GetMissingBlocks, lowerBound, upperBound)
+	rows, err := s.pool.Query(context.Background(), s.queries.GetMissingBlocks, lowerBound, upperBound)
 	if err != nil {
 		return nil, err
 	}
@@ -121,8 +89,8 @@ func (s *PostgresStore) GetMissingBlocks(ctx context.Context, lowerBound uint64,
 	return rows, nil
 }
 
-func (s *PostgresStore) SetSearchLowerBound(ctx context.Context, newLowerBound uint64) error {
+func (s *PostgresStore) SetSearchLowerBound(newLowerBound uint64) error {
-	_, err := s.pool.Exec(ctx, s.queries.SetSearchLowerBound, newLowerBound)
+	_, err := s.pool.Exec(context.Background(), s.queries.SetSearchLowerBound, newLowerBound)
 	if err != nil {
 		return err
 	}
@@ -130,8 +98,8 @@ func (s *PostgresStore) SetSearchLowerBound(ctx context.Context, newLowerBound u
 	return nil
 }
 
-func (s *PostgresStore) CommitBlock(ctx context.Context, block uint64) error {
+func (s *PostgresStore) CommitBlock(block uint64) error {
-	_, err := s.pool.Exec(ctx, s.queries.CommitBlock, block)
+	_, err := s.pool.Exec(context.Background(), s.queries.CommitBlock, block)
 	if err != nil {
 		return err
 	}

internal/store/store.go

@@ -1,11 +1,10 @@
 package store
 
-import "context"
+// Store defines indexer get and set queries.
-
+// GetMissingBlocks returns a generic iterable.
-// Store defines all relevant get/set queries against the implemented storage backend.
 type Store[T any] interface {
-	GetSearchBounds(ctx context.Context, batchSize uint64, headCursor uint64, headBlockLag uint64) (lowerBound uint64, upperBound uint64, err error)
+	GetSearchBounds(batchSize uint64, headCursor uint64, headBlockLag uint64) (lowerBound uint64, upperBound uint64, err error)
-	GetMissingBlocks(ctx context.Context, lowerBound uint64, upperBound uint64) (missingBlocksIterable T, err error)
+	GetMissingBlocks(lowerBound uint64, upperBound uint64) (missingBlocksIterable T, err error)
-	SetSearchLowerBound(ctx context.Context, newLowerBound uint64) (err error)
+	SetSearchLowerBound(newLowerBound uint64) (err error)
-	CommitBlock(ctx context.Context, block uint64) (err error)
+	CommitBlock(block uint64) (err error)
 }

internal/syncer/head.go

@@ -2,38 +2,29 @@ package syncer
 
 import (
 	"context"
-	"time"
 
 	"github.com/alitto/pond"
 	"github.com/celo-org/celo-blockchain/core/types"
 	"github.com/celo-org/celo-blockchain/ethclient"
-	"github.com/celo-org/celo-blockchain/event"
 	"github.com/grassrootseconomics/cic-chain-events/internal/pipeline"
 	"github.com/zerodha/logf"
 )
 
-const (
+type HeadSyncerOpts struct {
-	jobTimeout         = 5 * time.Second
+	Stats      *Stats
-	resubscribeBackoff = 2 * time.Second
+	Pipeline   *pipeline.Pipeline
-)
+	Logg       logf.Logger
+	Pool       *pond.WorkerPool
+	WsEndpoint string
+}
 
-type (
+type HeadSyncer struct {
-	HeadSyncerOpts struct {
+	stats     *Stats
-		Logg       logf.Logger
+	pipeline  *pipeline.Pipeline
-		Pipeline   *pipeline.Pipeline
+	logg      logf.Logger
-		Pool       *pond.WorkerPool
+	ethClient *ethclient.Client
-		Stats      *Stats
+	pool      *pond.WorkerPool
-		WsEndpoint string
+}
-	}
-
-	HeadSyncer struct {
-		ethClient *ethclient.Client
-		logg      logf.Logger
-		pipeline  *pipeline.Pipeline
-		pool      *pond.WorkerPool
-		stats     *Stats
-	}
-)
 
 func NewHeadSyncer(o HeadSyncerOpts) (*HeadSyncer, error) {
 	ethClient, err := ethclient.Dial(o.WsEndpoint)
@@ -42,45 +33,41 @@ func NewHeadSyncer(o HeadSyncerOpts) (*HeadSyncer, error) {
 	}
 
 	return &HeadSyncer{
-		ethClient: ethClient,
-		logg:      o.Logg,
-		pipeline:  o.Pipeline,
-		pool:      o.Pool,
 		stats:     o.Stats,
+		pipeline:  o.Pipeline,
+		logg:      o.Logg,
+		ethClient: ethClient,
+		pool:      o.Pool,
 	}, nil
 }
 
-// Start creates a websocket subscription and actively receives new blocks until stopped
-// or a critical error occurs.
 func (hs *HeadSyncer) Start(ctx context.Context) error {
-	headerReceiver := make(chan *types.Header, 1)
+	headerReceiver := make(chan *types.Header, 10)
 
-	sub := event.ResubscribeErr(resubscribeBackoff, func(ctx context.Context, err error) (event.Subscription, error) {
+	sub, err := hs.ethClient.SubscribeNewHead(ctx, headerReceiver)
-		if err != nil {
+	if err != nil {
-			hs.logg.Error("head syncer: resubscribe error", "error", err)
+		return err
-		}
+	}
-
-		return hs.ethClient.SubscribeNewHead(ctx, headerReceiver)
-	})
-	defer sub.Unsubscribe()
 
 	for {
 		select {
-		case <-ctx.Done():
-			hs.logg.Info("head syncer: shutdown signal received")
-			return nil
 		case header := <-headerReceiver:
-			blockNumber := header.Number.Uint64()
+			block := header.Number.Uint64()
-			hs.logg.Debug("head syncer: received new block", "block", blockNumber)
+			hs.logg.Debug("head syncer received new block", "block", block)
-			hs.stats.UpdateHeadCursor(blockNumber)
-			hs.pool.Submit(func() {
-				ctx, cancel := context.WithTimeout(context.Background(), jobTimeout)
-				defer cancel()
 
-				if err := hs.pipeline.Run(ctx, blockNumber); err != nil {
+			hs.stats.UpdateHeadCursor(block)
-					hs.logg.Error("head syncer: pipeline run error", "error", err)
+			hs.pool.Submit(func() {
+				if err := hs.pipeline.Run(block); err != nil {
+					hs.logg.Error("pipeline run error", "error", err)
 				}
 			})
+		case err := <-sub.Err():
+			hs.logg.Error("head syncer error", "error", err)
+			return err
+		case <-ctx.Done():
+			hs.logg.Debug("head syncer shutdown signnal received")
+			sub.Unsubscribe()
+			return nil
 		}
 	}
 }

internal/syncer/janitor.go

@@ -11,35 +11,32 @@ import (
 	"github.com/zerodha/logf"
 )
 
-const (
+type JanitorOpts struct {
-	headBlockLag = 5
+	BatchSize     uint64
-)
+	HeadBlockLag  uint64
+	Logg          logf.Logger
+	Pipeline      *pipeline.Pipeline
+	Pool          *pond.WorkerPool
+	Stats         *Stats
+	Store         store.Store[pgx.Rows]
+	SweepInterval time.Duration
+}
 
-type (
+type Janitor struct {
-	JanitorOpts struct {
+	batchSize     uint64
-		BatchSize     uint64
+	headBlockLag  uint64
-		Logg          logf.Logger
+	pipeline      *pipeline.Pipeline
-		Pipeline      *pipeline.Pipeline
+	logg          logf.Logger
-		Pool          *pond.WorkerPool
+	pool          *pond.WorkerPool
-		Stats         *Stats
+	stats         *Stats
-		Store         store.Store[pgx.Rows]
+	store         store.Store[pgx.Rows]
-		SweepInterval time.Duration
+	sweepInterval time.Duration
-	}
+}
-
-	Janitor struct {
-		batchSize     uint64
-		pipeline      *pipeline.Pipeline
-		logg          logf.Logger
-		pool          *pond.WorkerPool
-		stats         *Stats
-		store         store.Store[pgx.Rows]
-		sweepInterval time.Duration
-	}
-)
 
 func NewJanitor(o JanitorOpts) *Janitor {
 	return &Janitor{
 		batchSize:     o.BatchSize,
+		headBlockLag:  o.HeadBlockLag,
 		logg:          o.Logg,
 		pipeline:      o.Pipeline,
 		pool:          o.Pool,
@@ -50,78 +47,71 @@ func NewJanitor(o JanitorOpts) *Janitor {
 }
 
 func (j *Janitor) Start(ctx context.Context) error {
-	ticker := time.NewTicker(j.sweepInterval)
+	timer := time.NewTimer(j.sweepInterval)
 
 	for {
 		select {
-		case <-ctx.Done():
+		case <-timer.C:
-			j.logg.Info("janitor: shutdown signal received")
+			j.logg.Debug("janitor starting sweep")
-			return nil
+			if err := j.QueueMissingBlocks(); err != nil {
-		case <-ticker.C:
+				j.logg.Error("janitor error", "error", err)
-			ctx, cancel := context.WithTimeout(context.Background(), jobTimeout)
-			defer cancel()
-
-			j.logg.Debug("janitor: starting sweep")
-			if err := j.QueueMissingBlocks(ctx); err != nil {
-				j.logg.Error("janitor: queue missing blocks error", "error", err)
 			}
+
+			timer.Reset(j.sweepInterval)
+		case <-ctx.Done():
+			j.logg.Debug("janitor shutdown signal received")
+			return nil
 		}
 	}
 }
 
-// QueueMissingBlocks searches for missing block and queues the block for processing.
+func (j *Janitor) QueueMissingBlocks() error {
-// It will run twice for a given search range and only after, raise the lower bound.
-func (j *Janitor) QueueMissingBlocks(ctx context.Context) error {
 	if j.stats.GetHeadCursor() == 0 {
-		j.logg.Warn("janitor: (skipping) awaiting head synchronization")
+		j.logg.Debug("janitor waiting for head synchronization")
 		return nil
 	}
 
-	if j.pool.WaitingTasks() != 0 {
+	if j.pool.WaitingTasks() >= j.batchSize {
-		j.logg.Debug("janitor: (skipping) queue has pending jobs", "pending_jobs", j.pool.WaitingTasks())
+		j.logg.Debug("janitor skipping potential queue pressure")
 		return nil
 	}
 
 	lowerBound, upperBound, err := j.store.GetSearchBounds(
-		ctx,
 		j.batchSize,
 		j.stats.GetHeadCursor(),
-		headBlockLag,
+		j.headBlockLag,
 	)
 	if err != nil {
 		return err
 	}
+	j.logg.Debug("janitor search bounds", "lower_bound", lowerBound, "upper_bound", upperBound)
 
-	rows, err := j.store.GetMissingBlocks(ctx, lowerBound, upperBound)
+	rows, err := j.store.GetMissingBlocks(lowerBound, upperBound)
 	if err != nil {
 		return err
 	}
 
-	missingBlockCountReport := j.stats.GetHeadCursor() - lowerBound
-	if missingBlockCountReport > 10 {
-		j.logg.Info("janitor: missing blocks", "count", missingBlockCountReport)
-	}
-
 	rowsProcessed := 0
 	for rows.Next() {
-		var blockNumber uint64
+		var n uint64
-		if err := rows.Scan(&blockNumber); err != nil {
+		if err := rows.Scan(&n); err != nil {
 			return err
 		}
 
 		j.pool.Submit(func() {
-			if err := j.pipeline.Run(ctx, blockNumber); err != nil {
+			if err := j.pipeline.Run(n); err != nil {
-				j.logg.Error("janitor: pipeline run error", "error", err)
+				j.logg.Error("pipeline run error", "error", err)
 			}
 		})
+
 		rowsProcessed++
 	}
 
-	j.logg.Debug("janitor: missing blocks to be processed", "count", rowsProcessed)
+	j.logg.Debug("janitor missing block count", "count", rowsProcessed)
 	if rowsProcessed == 0 {
-		j.logg.Info("janitor: no gap! rasing lower bound", "new_lower_bound", upperBound)
+		j.logg.Debug("no missing blocks, rasing lower bound")
 		j.stats.UpdateLowerBound(upperBound)
-		j.store.SetSearchLowerBound(ctx, upperBound)
+		j.store.SetSearchLowerBound(upperBound)
 	}
 
 	if rows.Err() != nil {

internal/syncer/stats.go

@@ -4,7 +4,8 @@ import (
 	"sync/atomic"
 )
 
-// Stats synchronizes block cursors values across the head and janitor.
+// Stats synchronize syncer values across the head and janitor.
+// could also be used to expose Prom gauges
 type Stats struct {
 	headCursor atomic.Uint64
 	lowerBound atomic.Uint64

migrations/001_init.sql

@@ -5,3 +5,8 @@ CREATE TABLE IF NOT EXISTS blocks (
 CREATE TABLE syncer_meta (
   lower_bound INT
 );
+
+---- create above / drop below ----
+
+DROP TABLE syncer_meta;
+DROP TABLE blocks;

pkg/echopprof/echopprof.go

@@ -1,158 +0,0 @@
-// MIT License
-
-// Copyright (c) 2017 Leslie Zheng
-
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-// SOFTWARE.
-
-package echopprof
-
-import (
-	"net/http/pprof"
-	"strings"
-
-	"github.com/labstack/echo/v4"
-)
-
-// Wrap adds several routes from package `net/http/pprof` to *echo.Echo object.
-func Wrap(e *echo.Echo) {
-	WrapGroup("", e.Group("/debug/pprof"))
-}
-
-// Wrapper make sure we are backward compatible.
-var Wrapper = Wrap
-
-// WrapGroup adds several routes from package `net/http/pprof` to *echo.Group object.
-func WrapGroup(prefix string, g *echo.Group) {
-	routers := []struct {
-		Method  string
-		Path    string
-		Handler echo.HandlerFunc
-	}{
-		{"GET", "", IndexHandler()},
-		{"GET", "/", IndexHandler()},
-		{"GET", "/heap", HeapHandler()},
-		{"GET", "/goroutine", GoroutineHandler()},
-		{"GET", "/block", BlockHandler()},
-		{"GET", "/threadcreate", ThreadCreateHandler()},
-		{"GET", "/cmdline", CmdlineHandler()},
-		{"GET", "/profile", ProfileHandler()},
-		{"GET", "/symbol", SymbolHandler()},
-		{"POST", "/symbol", SymbolHandler()},
-		{"GET", "/trace", TraceHandler()},
-		{"GET", "/mutex", MutexHandler()},
-		{"GET", "/allocs", AllocsHandler()},
-	}
-
-	for _, r := range routers {
-		switch r.Method {
-		case "GET":
-			g.GET(strings.TrimPrefix(r.Path, prefix), r.Handler)
-		case "POST":
-			g.POST(strings.TrimPrefix(r.Path, prefix), r.Handler)
-		}
-	}
-}
-
-// IndexHandler will pass the call from /debug/pprof to pprof.
-func IndexHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Index(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// HeapHandler will pass the call from /debug/pprof/heap to pprof.
-func HeapHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("heap").ServeHTTP(ctx.Response(), ctx.Request())
-		return nil
-	}
-}
-
-// GoroutineHandler will pass the call from /debug/pprof/goroutine to pprof.
-func GoroutineHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("goroutine").ServeHTTP(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// BlockHandler will pass the call from /debug/pprof/block to pprof.
-func BlockHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("block").ServeHTTP(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// ThreadCreateHandler will pass the call from /debug/pprof/threadcreate to pprof.
-func ThreadCreateHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("threadcreate").ServeHTTP(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// CmdlineHandler will pass the call from /debug/pprof/cmdline to pprof.
-func CmdlineHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Cmdline(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// ProfileHandler will pass the call from /debug/pprof/profile to pprof.
-func ProfileHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Profile(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// SymbolHandler will pass the call from /debug/pprof/symbol to pprof.
-func SymbolHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Symbol(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// TraceHandler will pass the call from /debug/pprof/trace to pprof.
-func TraceHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Trace(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// MutexHandler will pass the call from /debug/pprof/mutex to pprof.
-func MutexHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("mutex").ServeHTTP(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}
-
-// AllocsHandler will pass the call from /debug/pprof/allocs to pprof.
-func AllocsHandler() echo.HandlerFunc {
-	return func(ctx echo.Context) error {
-		pprof.Handler("allocs").ServeHTTP(ctx.Response().Writer, ctx.Request())
-		return nil
-	}
-}

pkg/fetch/graphql.go

@@ -1,69 +0,0 @@
-package fetch
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"fmt"
-	"io"
-	"net/http"
-	"time"
-)
-
-const (
-	graphqlQuery = `{"query":"{block(number:%d){transactions{block{number,timestamp},hash,index,from{address},to{address},value,inputData,status,gasUsed}}}"}`
-)
-
-type GraphqlOpts struct {
-	GraphqlEndpoint string
-}
-
-type Graphql struct {
-	graphqlEndpoint string
-	httpClient      *http.Client
-}
-
-func NewGraphqlFetcher(o GraphqlOpts) Fetch {
-	return &Graphql{
-		httpClient: &http.Client{
-			Transport: &http.Transport{
-				MaxIdleConns:        100,
-				MaxIdleConnsPerHost: 100,
-				IdleConnTimeout:     60 * time.Second,
-			},
-			Timeout: time.Second * 5,
-		},
-		graphqlEndpoint: o.GraphqlEndpoint,
-	}
-}
-
-func (f *Graphql) Block(ctx context.Context, blockNumber uint64) (FetchResponse, error) {
-	fetchResponse := FetchResponse{}
-
-	req, err := http.NewRequestWithContext(ctx, http.MethodPost, f.graphqlEndpoint, bytes.NewBufferString(fmt.Sprintf(graphqlQuery, blockNumber)))
-	if err != nil {
-		return fetchResponse, err
-	}
-	req.Header.Set("Content-Type", "application/json")
-
-	resp, err := f.httpClient.Do(req)
-	if err != nil {
-		return fetchResponse, err
-	}
-
-	if resp.StatusCode >= http.StatusBadRequest {
-		return fetchResponse, fmt.Errorf("error fetching block %s", resp.Status)
-	}
-
-	out, err := io.ReadAll(resp.Body)
-	_ = resp.Body.Close()
-	if err != nil {
-		return fetchResponse, nil
-	}
-
-	if err := json.Unmarshal(out, &fetchResponse); err != nil {
-		return fetchResponse, err
-	}
-
-	return fetchResponse, nil
-}

pkg/fetch/graphql_test.go

@@ -1,39 +0,0 @@
-package fetch
-
-import (
-	"context"
-	"os"
-	"testing"
-
-	"github.com/stretchr/testify/suite"
-)
-
-var (
-	graphqlEndpoint = os.Getenv("TEST_GRAPHQL_ENDPOINT")
-)
-
-type GraphQlTestSuite struct {
-	suite.Suite
-	fetch Fetch
-}
-
-func (s *GraphQlTestSuite) SetupSuite() {
-	s.fetch = NewGraphqlFetcher(GraphqlOpts{
-		GraphqlEndpoint: graphqlEndpoint,
-	})
-}
-
-func (s *GraphQlTestSuite) Test_E2E_Fetch_Existing_Block() {
-	resp, err := s.fetch.Block(context.Background(), 14974600)
-	s.NoError(err)
-	s.Len(resp.Data.Block.Transactions, 3)
-}
-
-func (s *GraphQlTestSuite) Test_E2E_Fetch_Non_Existing_Block() {
-	_, err := s.fetch.Block(context.Background(), 14974600000)
-	s.Error(err)
-}
-
-func TestGraphQlSuite(t *testing.T) {
-	suite.Run(t, new(GraphQlTestSuite))
-}