refactor debug code into separate package and rename to inspect

state/indexer/sink/sink.go

@@ -0,0 +1,61 @@
+package sink
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/tendermint/tendermint/config"
+	"github.com/tendermint/tendermint/state/indexer"
+	"github.com/tendermint/tendermint/state/indexer/sink/kv"
+	"github.com/tendermint/tendermint/state/indexer/sink/null"
+	"github.com/tendermint/tendermint/state/indexer/sink/psql"
+)
+
+func EventSinksFromConfig(cfg *config.Config, dbProvider config.DBProvider, chainID string) ([]indexer.EventSink, error) {
+	if len(cfg.TxIndex.Indexer) == 0 {
+		return []indexer.EventSink{null.NewEventSink()}, nil
+	}
+
+	// check for duplicated sinks
+	sinks := map[string]struct{}{}
+	for _, s := range cfg.TxIndex.Indexer {
+		sl := strings.ToLower(s)
+		if _, ok := sinks[sl]; ok {
+			return nil, errors.New("found duplicated sinks, please check the tx-index section in the config.toml")
+		}
+		sinks[sl] = struct{}{}
+	}
+	eventSinks := []indexer.EventSink{}
+	for k := range sinks {
+		switch k {
+		case string(indexer.NULL):
+			// When we see null in the config, the eventsinks will be reset with the
+			// nullEventSink.
+			return []indexer.EventSink{null.NewEventSink()}, nil
+
+		case string(indexer.KV):
+			store, err := dbProvider(&config.DBContext{ID: "tx_index", Config: cfg})
+			if err != nil {
+				return nil, err
+			}
+
+			eventSinks = append(eventSinks, kv.NewEventSink(store))
+
+		case string(indexer.PSQL):
+			conn := cfg.TxIndex.PsqlConn
+			if conn == "" {
+				return nil, errors.New("the psql connection settings cannot be empty")
+			}
+
+			es, _, err := psql.NewEventSink(conn, chainID)
+			if err != nil {
+				return nil, err
+			}
+			eventSinks = append(eventSinks, es)
+		default:
+			return nil, errors.New("unsupported event sink type")
+		}
+	}
+	return eventSinks, nil
+
+}