Link spending transaction to output in explorer

api/worker.go

@@ -45,6 +45,7 @@ func (w *Worker) getAddressesFromVout(vout *bchain.Vout) (bchain.AddressDescript
 
 // GetTransaction reads transaction data from txid
 func (w *Worker) GetTransaction(txid string, bestheight uint32, spendingTxs bool) (*Tx, error) {
+	start := time.Now()
 	bchainTx, height, err := w.txCache.GetTransaction(txid, bestheight)
 	if err != nil {
 		return nil, NewApiError(fmt.Sprintf("Tx not found, %v", err), true)
@@ -123,7 +124,39 @@ func (w *Worker) GetTransaction(txid string, bestheight uint32, spendingTxs bool
 		if ta != nil {
 			vout.Spent = ta.Outputs[i].Spent
 			if spendingTxs && vout.Spent {
-				// TODO
+				// find transaction that spent this output
+				// there is not an index, it must be found in addresses -> txaddresses -> tx
+				// given that each step is more and more selective, it is not
+				err = w.db.GetAddrDescTransactions(vout.ScriptPubKey.AddrDesc, height, ^uint32(0), func(t string, index uint32, isOutput bool) error {
+					if isOutput == false {
+						tsp, err := w.db.GetTxAddresses(t)
+						if err != nil {
+							glog.Warning("DB inconsistency:  tx ", t, ": not found in txAddresses")
+						} else {
+							if len(tsp.Inputs) > int(index) {
+								if tsp.Inputs[index].ValueSat.Cmp(&vout.ValueSat) == 0 {
+									spentTx, spentHeight, err := w.txCache.GetTransaction(t, bestheight)
+									if err != nil {
+										glog.Warning("Tx ", t, ": not found")
+									} else {
+										if len(spentTx.Vin) > int(index) {
+											if spentTx.Vin[index].Txid == bchainTx.Txid {
+												vout.SpentTxID = t
+												vout.SpentHeight = int(spentHeight)
+												vout.SpentIndex = int(index)
+												return &db.StopIteration{}
+											}
+										}
+									}
+								}
+							}
+						}
+					}
+					return nil
+				})
+				if err != nil {
+					glog.Errorf("GetAddrDescTransactions error %v, %v, output %v", err, vout.ScriptPubKey.AddrDesc)
+				}
 			}
 		}
 	}
@@ -150,6 +183,7 @@ func (w *Worker) GetTransaction(txid string, bestheight uint32, spendingTxs bool
 		Vin:           vins,
 		Vout:          vouts,
 	}
+	glog.Info("GetTransaction ", txid, " finished in ", time.Since(start))
 	return r, nil
 }
 
@@ -238,6 +272,7 @@ func (w *Worker) txFromTxAddress(txid string, ta *db.TxAddresses, bi *db.BlockIn
 		if err != nil {
 			glog.Errorf("tai.Addresses error %v, tx %v, output %v, tao %+v", err, txid, i, tao)
 		}
+		vout.Spent = tao.Spent
 	}
 	// for coinbase transactions valIn is 0
 	feesSat.Sub(&valInSat, &valOutSat)
@@ -374,6 +409,6 @@ func (w *Worker) GetAddress(address string, page int, txsOnPage int, onlyTxids b
 		TotalPages:              totalPages,
 		TxsOnPage:               txsOnPage,
 	}
-	glog.Info(address, " finished in ", time.Since(start))
+	glog.Info("GetAddress ", address, " finished in ", time.Since(start))
 	return r, nil
 }

static/templates/txdetail.html

@@ -4,30 +4,30 @@
         <div class="col-xs-7 col-md-8 ellipsis">
             <a href="/explorer/tx/{{$tx.Txid}}">{{$tx.Txid}}</a>
         </div>
-        {{if $tx.Confirmations}}
+        {{- if $tx.Confirmations -}}
         <div class="col-xs-5 col-md-4 text-muted text-right">mined {{formatUnixTime $tx.Blocktime}}</div>
-        {{end}}
+        {{- end -}}
     </div>
     <div class="row line-mid">
         <div class="col-md-5">
             <div class="row">
                 <table class="table data-table">
                     <tbody>
-                        {{range $vin := $tx.Vin}}
+                        {{- range $vin := $tx.Vin -}}
                         <tr>
                             <td>
-                                {{range $a := $vin.Addresses}}
+                                {{- range $a := $vin.Addresses}}
                                 <span class="ellipsis float-left">
                                     {{if and (ne $a $addr) $vin.Searchable}}<a href="/explorer/address/{{$a}}">{{$a}}</a>{{else}}{{$a}}{{end}}
                                 </span>
-                                {{else}}
+                                {{- else -}}
                                 <span class="float-left">No Inputs (Newly Generated Coins)</span>
-                                {{end}}{{if $vin.Addresses}}
+                                {{- end -}}{{- if $vin.Addresses -}}
                                 <span class="float-right{{if stringInSlice $addr $vin.Addresses}} text-danger{{end}}">{{formatAmount $vin.Value}} {{$cs}}</span>
-                                {{end}}
+                                {{- end -}}
                             </td>
                         </tr>
-                        {{end}}
+                        {{- end -}}
                     </tbody>
                 </table>
             </div>
@@ -41,27 +41,24 @@
             <div class="row">
                 <table class="table data-table">
                     <tbody>
-                        {{range $vout := $tx.Vout}}
+                        {{- range $vout := $tx.Vout -}}
                         <tr>
                             <td>
-                                {{range $a := $vout.ScriptPubKey.Addresses}}
+                                {{- range $a := $vout.ScriptPubKey.Addresses -}}
                                 <span class="ellipsis float-left">
-                                    {{if and (ne $a $addr) $vout.ScriptPubKey.Searchable}}<a href="/explorer/address/{{$a}}">{{$a}}</a>{{else}}{{$a}}{{end}}
+                                    {{- if and (ne $a $addr) $vout.ScriptPubKey.Searchable}}<a href="/explorer/address/{{$a}}">{{$a}}</a>{{else}}{{$a}}{{- end -}}
                                 </span>
-                                {{else}}
+                                {{- else -}}
                                 <span class="float-left">Unparsed address</span>
-                                {{end}}
+                                {{- end -}}
                                 <span class="float-right{{if stringInSlice $addr $vout.ScriptPubKey.Addresses}} text-success{{end}}">
-                                    {{formatAmount $vout.Value}} {{$cs}}
+                                    {{formatAmount $vout.Value}} {{$cs}}{{if $vout.Spent}}{{if $vout.SpentTxID}}<a class="text-danger" href="/explorer/tx/{{$vout.SpentTxID}}">(S)</a>{{else}}<span class="text-danger">(S)</span>{{end}}{{else -}}
-                                    {{if $vout.Spent}}
-                                    <span class="text-danger">(S)</span>
-                                    {{else}}
                                     <span class="text-success">(U)</span>
-                                    {{end}}
+                                    {{- end -}}
                                 </span>
                             </td>
                         </tr>
-                        {{end}}
+                        {{- end -}}
                     </tbody>
                 </table>
             </div>
@@ -69,16 +66,16 @@
     </div>
     <div class="row line-top">
         <div class="col-xs-6 col-sm-4 col-md-4">
-            {{if $tx.Fees}}
+            {{- if $tx.Fees -}}
             <span class="txvalues txvalues-default">Fee: {{formatAmount $tx.Fees}} {{$cs}}</span>
-            {{end}}
+            {{- end -}}
         </div>
         <div class="col-xs-6 col-sm-8 col-md-8 text-right">
-            {{if $tx.Confirmations}}
+            {{- if $tx.Confirmations -}}
             <span class="txvalues txvalues-success">{{$tx.Confirmations}} Confirmations</span>
-            {{else}}
+            {{- else -}}
             <span class="txvalues txvalues-danger ng-hide">Unconfirmed Transaction!</span>
-            {{end}}
+            {{- end -}}
             <span class="txvalues txvalues-primary">{{formatAmount $tx.ValueOut}} {{$cs}}</span>
         </div>
     </div>