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substrate.go
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substrate.go
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package commands
import (
"context"
"fmt"
"github.com/cenkalti/backoff"
"github.com/jmoiron/sqlx"
"github.com/mailchain/mailchain/cmd/indexer/internal/processor"
sub "github.com/mailchain/mailchain/cmd/indexer/internal/substrate"
"github.com/mailchain/mailchain/cmd/internal/datastore/noop"
"github.com/mailchain/mailchain/cmd/internal/datastore/pq"
"github.com/mailchain/mailchain/internal/protocols"
"github.com/mailchain/mailchain/internal/protocols/substrate"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
func substrateCmd() *cobra.Command {
cmd := &cobra.Command{
Use: "substrate",
Short: "run substrate sequential processor",
TraverseChildren: true,
RunE: func(cmd *cobra.Command, args []string) error {
network := viper.GetString("network")
protocol := viper.GetString("protocol")
blockNumber := viper.GetString("start_block")
maxRetries := viper.GetUint64("max_retries")
addressRPC := viper.GetString("rpc_address")
if addressRPC == "" {
return errors.Errorf("rpc-address must not be empty")
}
connIndexer, err := newPostgresConnection(cmd, "indexer")
if err != nil {
return err
}
connPublicKey, err := newPostgresConnection(cmd, "pubkey")
if err != nil {
return err
}
connEnvelope, err := newPostgresConnection(cmd, "envelope")
if err != nil {
return err
}
defer connIndexer.Close()
defer connPublicKey.Close()
defer connEnvelope.Close()
var subClient *sub.BlockClient
operation := func() error {
var err error
subClient, err = sub.NewRPC(addressRPC)
if err != nil {
fmt.Fprintf(cmd.ErrOrStderr(), "%+v\n", err)
}
return err
}
if err := backoff.Retry(operation, backoff.WithMaxRetries(backoff.NewExponentialBackOff(), 3)); err != nil {
fmt.Fprintf(cmd.ErrOrStderr(), "Number of retries has reached to %d. Exiting.\\n", 3)
return err
}
seqProcessor, err := createSubstrateProcessor(subClient, connIndexer, connPublicKey, connEnvelope, blockNumber, protocol, network)
if err != nil {
return err
}
doSequential(cmd, seqProcessor, maxRetries)
return nil
},
}
cmd.Flags().String("start-block", "latest", "Block number from which the indexer will start, e.g. 10000, or 'latest'")
_ = viper.BindPFlag("start_block", cmd.Flags().Lookup("start-block"))
cmd.Flags().String("protocol", protocols.Substrate, "Protocol to run against")
_ = viper.BindPFlag("protocol", cmd.Flags().Lookup("protocol"))
cmd.Flags().String("network", substrate.EdgewareMainnet, "Network to run against")
_ = viper.BindPFlag("network", cmd.Flags().Lookup("network"))
cmd.Flags().String("rpc-address", "", "Substrate RPC-JSON address")
_ = viper.BindPFlag("rpc_address", cmd.Flags().Lookup("rpc-address"))
return cmd
}
func createSubstrateProcessor(client *sub.BlockClient, connIndexer, connPublicKey, connEnvelope *sqlx.DB, blockNumber, protocol, network string) (*processor.Sequential, error) {
ctx := context.Background()
blockNo, err := getBlockNumber(blockNumber, client)
if err != nil {
return nil, err
}
syncStore, err := pq.NewSyncStore(connIndexer)
if err != nil {
return nil, err
}
pubKeyStore, err := pq.NewPublicKeyStore(connPublicKey)
if err != nil {
return nil, err
}
transactionStore, err := pq.NewTransactionStore(connEnvelope)
if err != nil {
return nil, err
}
rawStore, err := noop.NewRawTransactionStore()
if err != nil {
return nil, err
}
processorTransaction := sub.NewExtrinsicProcessor(transactionStore, rawStore, pubKeyStore)
if err := syncStore.PutBlockNumber(ctx, protocol, network, blockNo); err != nil {
return nil, err
}
return processor.NewSequential(
protocols.Substrate,
network,
syncStore,
sub.NewBlockProcessor(processorTransaction),
client,
), nil
}