expose /tx?hash="XXXXXXXXXXXX" RPC call

state/execution.go

@@ -1,6 +1,7 @@
 package state
 
 import (
+	"encoding/hex"
 	"errors"
 	"fmt"
 
@@ -251,7 +252,8 @@ func (s *State) ApplyBlock(eventCache types.Fireable, proxyAppConn proxy.AppConn
 	for i, r := range txResults {
 		if r != nil {
 			tx := block.Txs[i]
-			batch.Index(string(tx.Hash()), *r)
+			// dd2e325f79f7e5f77788759d278c1d4b370c842e => {"height":2405, "index":0, ...}
+			batch.Index(hex.EncodeToString(tx.Hash()), *r)
 		}
 	}
 	s.TxIndexer.Batch(batch)

state/state.go

@@ -44,13 +44,12 @@ type State struct {
 	TxIndexer tx.Indexer `json:"-"` // Transaction indexer.
 }
 
-// Used in tests.
 func LoadState(db dbm.DB) *State {
 	return loadState(db, stateKey)
 }
 
 func loadState(db dbm.DB, key []byte) *State {
-	s := &State{db: db}
+	s := &State{db: db, TxIndexer: &txindexer.Null{}}
 	buf := db.Get(key)
 	if len(buf) == 0 {
 		return nil
@@ -132,15 +131,6 @@ func GetState(config cfg.Config, stateDB dbm.DB) *State {
 		state.Save()
 	}
 
-	// Transaction indexing
-	switch config.GetString("tx_indexer") {
-	case "kv":
-		store := dbm.NewDB("tx_indexer", config.GetString("db_backend"), config.GetString("db_dir"))
-		state.TxIndexer = txindexer.NewKV(store)
-	default:
-		state.TxIndexer = &txindexer.Null{}
-	}
-
 	return state
 }
 

state/tx/indexer/null.go

@@ -1,13 +1,16 @@
 package indexer
 
-import "github.com/tendermint/tendermint/types"
+import (
+	"errors"
+	"github.com/tendermint/tendermint/types"
+)
 
 // Null acts as a /dev/null.
 type Null struct{}
 
 // Tx panics.
 func (indexer *Null) Tx(hash string) (*types.TxResult, error) {
-	panic("You are trying to get the transaction from a null indexer")
+	return nil, errors.New("Indexing is disabled (set `tx_indexer=kv` in config)")
 }
 
 // Batch returns nil.