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feat: init base logic for rpc fetcher

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This commit is contained in:
Mohamed Sohail 2023-01-16 13:03:22 +00:00
parent c138c95583
commit de8eb31aba
Signed by: kamikazechaser
GPG Key ID: 7DD45520C01CD85D
3 changed files with 67 additions and 0 deletions
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1
go.mod
View File

@ -7,6 +7,7 @@ require (
github.com/alitto/pond v1.8.2
github.com/celo-org/celo-blockchain v1.6.1
github.com/goccy/go-json v0.10.0
github.com/grassrootseconomics/cic-celo-sdk v0.3.1
github.com/grassrootseconomics/w3-celo-patch v0.1.0
github.com/jackc/pgx/v5 v5.2.0
github.com/knadh/goyesql/v2 v2.2.0

2
go.sum
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@ -248,6 +248,8 @@ github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB7
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/graph-gophers/graphql-go v1.3.0/go.mod h1:9CQHMSxwO4MprSdzoIEobiHpoLtHm77vfxsvsIN5Vuc=
github.com/grassrootseconomics/cic-celo-sdk v0.3.1 h1:SzmMFrqxSIdgePqwbUdoS3PNP82MFnlOecycVk2ZYWg=
github.com/grassrootseconomics/cic-celo-sdk v0.3.1/go.mod h1:EiR6d03GYu6jlVKNL1MbTAw/bqAW2WP3J/lkrZxPMdU=
github.com/grassrootseconomics/w3-celo-patch v0.1.0 h1:0fev2hYkGEyFX2D4oUG8yy4jXhtHv7qUtLLboXL5ycw=
github.com/grassrootseconomics/w3-celo-patch v0.1.0/go.mod h1:JtkXc+yDUiQQJdhYTqddZI/itdYGHY7H8PNZzBo4hCk=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=

64
pkg/fetch/rpc.go Normal file
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@ -0,0 +1,64 @@
package fetch
import (
"context"
"math/big"
"github.com/celo-org/celo-blockchain/core/types"
celo "github.com/grassrootseconomics/cic-celo-sdk"
"github.com/grassrootseconomics/w3-celo-patch/module/eth"
"github.com/grassrootseconomics/w3-celo-patch/w3types"
)
type RPCOpts struct {
RPCProvider *celo.Provider
}
type RPC struct {
provider *celo.Provider
}
func NewRPCFetcher(o RPCOpts) Fetch {
return &RPC{
provider: o.RPCProvider,
}
}
// This method makes 2 calls. 1 for the block and 1 batched call for txs + receipts.
// Should work on free tier RPC services.
func (f *RPC) Block(ctx context.Context, blockNumber uint64) (FetchResponse, error) {
var (
block types.Block
fetchResponse FetchResponse
)
if err := f.provider.Client.CallCtx(
ctx,
eth.BlockByNumber(big.NewInt(int64(blockNumber))).Returns(&block),
); err != nil {
return FetchResponse{}, nil
}
txCount := len(block.Transactions())
batchCalls := make([]w3types.Caller, txCount*2)
txs := make([]types.Transaction, txCount)
txsReceipt := make([]types.Receipt, txCount)
for i, tx := range block.Transactions() {
batchCalls[i] = eth.Tx(tx.Hash()).Returns(&txs[i])
batchCalls[txCount+i] = eth.TxReceipt(tx.Hash()).Returns(&txsReceipt[i])
}
if err := f.provider.Client.CallCtx(
ctx,
batchCalls...,
); err != nil {
return FetchResponse{}, nil
}
// TODO: Create FetchResponse
return fetchResponse, nil
}