btcjson: Add getmempoolentry API

btcjson/chainsvrcmds.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2014 The btcsuite developers
+// Copyright (c) 2014-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -333,6 +333,19 @@ func NewGetInfoCmd() *GetInfoCmd {
 	return &GetInfoCmd{}
 }
 
+// GetMempoolEntryCmd defines the getmempoolentry JSON-RPC command.
+type GetMempoolEntryCmd struct {
+	TxID string
+}
+
+// NewGetMempoolEntryCmd returns a new instance which can be used to issue a
+// getmempoolentry JSON-RPC command.
+func NewGetMempoolEntryCmd(txHash string) *GetMempoolEntryCmd {
+	return &GetMempoolEntryCmd{
+		TxID: txHash,
+	}
+}
+
 // GetMempoolInfoCmd defines the getmempoolinfo JSON-RPC command.
 type GetMempoolInfoCmd struct{}
 
@@ -741,6 +754,7 @@ func init() {
 	MustRegisterCmd("getgenerate", (*GetGenerateCmd)(nil), flags)
 	MustRegisterCmd("gethashespersec", (*GetHashesPerSecCmd)(nil), flags)
 	MustRegisterCmd("getinfo", (*GetInfoCmd)(nil), flags)
+	MustRegisterCmd("getmempoolentry", (*GetMempoolEntryCmd)(nil), flags)
 	MustRegisterCmd("getmempoolinfo", (*GetMempoolInfoCmd)(nil), flags)
 	MustRegisterCmd("getmininginfo", (*GetMiningInfoCmd)(nil), flags)
 	MustRegisterCmd("getnetworkinfo", (*GetNetworkInfoCmd)(nil), flags)

btcjson/chainsvrcmds_test.go

@@ -383,6 +383,19 @@ func TestChainSvrCmds(t *testing.T) {
 			marshalled:   `{"jsonrpc":"1.0","method":"getinfo","params":[],"id":1}`,
 			unmarshalled: &btcjson.GetInfoCmd{},
 		},
+		{
+			name: "getmempoolentry",
+			newCmd: func() (interface{}, error) {
+				return btcjson.NewCmd("getmempoolentry", "txhash")
+			},
+			staticCmd: func() interface{} {
+				return btcjson.NewGetMempoolEntryCmd("txhash")
+			},
+			marshalled: `{"jsonrpc":"1.0","method":"getmempoolentry","params":["txhash"],"id":1}`,
+			unmarshalled: &btcjson.GetMempoolEntryCmd{
+				TxID: "txhash",
+			},
+		},
 		{
 			name: "getmempoolinfo",
 			newCmd: func() (interface{}, error) {

btcjson/chainsvrresults.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2014 The btcsuite developers
+// Copyright (c) 2014-2017 The btcsuite developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -166,6 +166,25 @@ type GetBlockTemplateResult struct {
 	RejectReasion string   `json:"reject-reason,omitempty"`
 }
 
+// GetMempoolEntryResult models the data returned from the getmempoolentry
+// command.
+type GetMempoolEntryResult struct {
+	Size             int32    `json:"size"`
+	Fee              float64  `json:"fee"`
+	ModifiedFee      float64  `json:"modifiedfee"`
+	Time             int64    `json:"time"`
+	Height           int64    `json:"height"`
+	StartingPriority float64  `json:"startingpriority"`
+	CurrentPriority  float64  `json:"currentpriority"`
+	DescendantCount  int64    `json:"descendantcount"`
+	DescendantSize   int64    `json:"descendantsize"`
+	DescendantFees   float64  `json:"descendantfees"`
+	AncestorCount    int64    `json:"ancestorcount"`
+	AncestorSize     int64    `json:"ancestorsize"`
+	AncestorFees     float64  `json:"ancestorfees"`
+	Depends          []string `json:"depends"`
+}
+
 // GetMempoolInfoResult models the data returned from the getmempoolinfo
 // command.
 type GetMempoolInfoResult struct {

rpcserver.go

@@ -222,6 +222,7 @@ var rpcUnimplemented = map[string]struct{}{
 	"estimatefee":      {},
 	"estimatepriority": {},
 	"getchaintips":     {},
+	"getmempoolentry":  {},
 	"getnetworkinfo":   {},
 	"getwork":          {},
 	"invalidateblock":  {},