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indexer.go
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indexer.go
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package indexer
import (
"context"
"github.com/ethereum/go-ethereum/log"
chain "github.com/savour-labs/fieryeyes/indexer/blockchain"
"github.com/savour-labs/fieryeyes/indexer/db"
"github.com/savour-labs/fieryeyes/indexer/metrics"
"github.com/savour-labs/fieryeyes/indexer/services"
"github.com/urfave/cli"
"os"
"strconv"
)
func Main(gitVersion string) func(ctx *cli.Context) error {
return func(ctx *cli.Context) error {
cfg, err := NewConfig(ctx)
if err != nil {
return err
}
log.Info("Initializing indexer")
indexer, err := NewIndexer(cfg)
if err != nil {
log.Error("Unable to create indexer", "error", err)
return err
}
log.Info("Starting indexer")
if err := indexer.Start(); err != nil {
return err
}
defer indexer.Stop()
log.Info("Indexer started")
<-(chan struct{})(nil)
return nil
}
}
type Indexer struct {
ctx context.Context
cfg Config
ethClient *chain.EvmChainClient
indexerRpcServices *services.IndexerRPCServices
db *db.Database
metrics *metrics.Metrics
}
func NewIndexer(cfg Config) (*Indexer, error) {
ctx := context.Background()
var logHandler log.Handler
if cfg.LogTerminal {
logHandler = log.StreamHandler(os.Stdout, log.TerminalFormat(true))
} else {
logHandler = log.StreamHandler(os.Stdout, log.JSONFormat())
}
logLevel, err := log.LvlFromString(cfg.LogLevel)
if err != nil {
return nil, err
}
log.Root().SetHandler(log.LvlFilterHandler(logLevel, logHandler))
dbConfig := &db.DatabaseConfig{
Username: cfg.DbUsername,
Password: cfg.DbPassword,
Host: cfg.DbHost,
Port: cfg.DbPort,
DbName: cfg.DbName,
}
dbSelf, err := db.NewDatabase(ctx, dbConfig)
if err != nil {
log.Error("new database fail", "err", err)
return nil, err
}
err = dbSelf.MigrateDb()
if err != nil {
log.Error("migrate db fail", "err", err)
return nil, err
}
evmConfig := &chain.EvmChainConfig{
EthRpc: cfg.EthRpc,
DisableHTTP2: cfg.DisableHTTP2,
SyncBlockHeight: cfg.SyncBlockHeight,
LoopInterval: cfg.LoopInterval,
Database: dbSelf,
}
ethCli, err := chain.NewEvmChainClient(ctx, evmConfig)
if err != nil {
log.Error("new evm chain client fail", "err", err)
return nil, err
}
err = ethCli.InitBlock()
if err != nil {
log.Error("init block fail", "err", err)
return nil, err
}
m := metrics.NewMetrics(nil)
if cfg.MetricsServerEnable {
go func() {
_, err := m.Serve(cfg.MetricsHostname, cfg.MetricsPort)
if err != nil {
log.Error("metrics server failed to start", "err", err)
}
}()
log.Info("metrics server enabled", "host", cfg.MetricsHostname, "port", cfg.MetricsPort)
}
iRpcConfig := &services.IndexerRPCConfig{
RpcHost: cfg.RpcHost,
RpcPort: strconv.FormatUint(cfg.RpcPort, 10),
Database: dbSelf,
}
iRpcServices, err := services.NewIndexerRPCServices(ctx, iRpcConfig)
if err != nil {
log.Error("new indexer rpc services fail", "err", err)
return nil, err
}
return &Indexer{
ctx: ctx,
cfg: cfg,
ethClient: ethCli,
indexerRpcServices: iRpcServices,
db: dbSelf,
metrics: m,
}, nil
}
func (i Indexer) Start() error {
log.Info("indexer start success")
i.ethClient.Start()
i.indexerRpcServices.Start()
return nil
}
func (i Indexer) Stop() {
i.ethClient.Stop()
i.indexerRpcServices.Stop()
log.Info("indexer stop success")
}