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package sink
import (
"errors"
"strings"
"github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/internal/state/indexer"
"github.com/tendermint/tendermint/internal/state/indexer/sink/kv"
"github.com/tendermint/tendermint/internal/state/indexer/sink/null"
"github.com/tendermint/tendermint/internal/state/indexer/sink/psql"
)
// EventSinksFromConfig constructs a slice of indexer.EventSink using the provided
// configuration.
//
//nolint:lll
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 indexer.EventSinkType(k) {
case indexer.NULL:
// When we see null in the config, the eventsinks will be reset with the
// nullEventSink.
return []indexer.EventSink{null.NewEventSink()}, nil
case 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 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
}