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last_arweave_block_provider.go
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last_arweave_block_provider.go
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package relay
import (
"context"
"errors"
"fmt"
"time"
rpchttp "github.com/cometbft/cometbft/rpc/client/http"
sequencertypes "github.com/warp-contracts/sequencer/x/sequencer/types"
"github.com/warp-contracts/syncer/src/utils/config"
"github.com/warp-contracts/syncer/src/utils/monitoring"
"github.com/warp-contracts/syncer/src/utils/task"
)
// Fills the last arweave block in the Payload
// Upon startup get info from the Sequencer, but later it just caches the info
type LastArweaveBlockProvider struct {
*task.Task
monitor monitoring.Monitor
client *rpchttp.HTTP
decoder *Decoder
input <-chan *Payload
Output chan *Payload
// Value taken from the API and updated upon MsgArweaveBlock
lastArweaveBlock *sequencertypes.ArweaveBlockInfo
}
// Converts Arweave transactions into Warp's contracts
func NewLastArweaveBlockProvider(config *config.Config) (self *LastArweaveBlockProvider) {
self = new(LastArweaveBlockProvider)
self.Output = make(chan *Payload)
self.Task = task.NewTask(config, "last_arweave_block_provider").
WithSubtaskFunc(self.run).
WithOnAfterStop(func() {
close(self.Output)
})
return
}
func (self *LastArweaveBlockProvider) WithMonitor(monitor monitoring.Monitor) *LastArweaveBlockProvider {
self.monitor = monitor
return self
}
func (self *LastArweaveBlockProvider) WithInputChannel(v <-chan *Payload) *LastArweaveBlockProvider {
self.input = v
return self
}
func (self *LastArweaveBlockProvider) WithClient(client *rpchttp.HTTP) *LastArweaveBlockProvider {
self.client = client
return self
}
func (self *LastArweaveBlockProvider) WithDecoder(decoder *Decoder) *LastArweaveBlockProvider {
self.decoder = decoder
return self
}
func (self *LastArweaveBlockProvider) getLastBlockHeight(payload *Payload) (out *sequencertypes.ArweaveBlockInfo, err error) {
ctx, cancel := context.WithTimeout(self.Ctx, time.Minute)
defer cancel()
query := fmt.Sprintf("tx.height <= %d AND message.action='/sequencer.sequencer.MsgArweaveBlock'", payload.SequencerBlockHeight)
page := 1
perPage := 1
results, err := self.client.TxSearch(ctx, query, false /*prove*/, &page /*page*/, &perPage /*per page*/, "desc" /*order by*/)
if err != nil {
return
}
if results.TotalCount == 0 && len(results.Txs) == 0 {
err = errors.New("no arweave blocks found, relayer started before any block was mined")
return
}
tx, err := self.decoder.Decode(results.Txs[0].Tx)
if err != nil {
return
}
msg, ok := tx.GetMsgs()[0].(*sequencertypes.MsgArweaveBlock)
if !ok {
err = errors.New("failed to decode arweave block message")
return
}
out = msg.BlockInfo
self.Log.WithField("last_arweave_block_height", msg.BlockInfo.Height).
WithField("sequencer_height", payload.SequencerBlockHeight).
Info("Got last arweave block from sequencer")
return
}
func (self *LastArweaveBlockProvider) fill(payload *Payload) (err error) {
for _, arweaveBlock := range payload.ArweaveBlocks {
if self.lastArweaveBlock == nil ||
self.lastArweaveBlock.Height < arweaveBlock.Message.BlockInfo.Height {
self.lastArweaveBlock = arweaveBlock.Message.BlockInfo
}
}
// Use updated cache
if self.lastArweaveBlock != nil {
// self.Log.WithField("last_arweave_block_height", self.lastArweaveBlockHeight).Debug("Use last arweave block ")
payload.LastArweaveBlock = self.lastArweaveBlock
return
}
// Request last arweave block for the given sequencer height
self.lastArweaveBlock, err = self.getLastBlockHeight(payload)
// Fill in the payload
payload.LastArweaveBlock = self.lastArweaveBlock
return
}
func (self *LastArweaveBlockProvider) run() (err error) {
for payload := range self.input {
err = self.fill(payload)
if err != nil {
if self.IsStopping.Load() {
// Neglect, we're stopping anyway
return nil
}
self.Log.WithField("sequencer_height", payload.SequencerBlockHeight).WithError(err).Error("Failed to fill last arweave block height")
// Stop everything
// We can't neglect parsing errors
panic(err)
}
select {
case <-self.Ctx.Done():
err = errors.New("task closing")
return
case self.Output <- payload:
}
}
return nil
}