cic-chain-events/cmd/service/filters.go
Mohamed Sohail a326593b21
feat: add approve filter (tested on chain) (#52)
* wip: add approve filter (untested)

* main: register approve filter

* fix: update tofrom addresses in event payload
2023-07-10 12:20:50 +08:00

108 lines
2.8 KiB
Go

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,
})
}