Support getmempoolinfo.

btcjson/chainsvrresults.go

@@ -122,6 +122,13 @@ type GetBlockTemplateResult struct {
 	RejectReasion string   `json:"reject-reason,omitempty"`
 }
 
+// GetMempoolInfoResult models the data returned from the getmempoolinfo
+// command.
+type GetMempoolInfoResult struct {
+	Size  int64 `json:"size"`
+	Bytes int64 `json:"bytes"`
+}
+
 // GetNetworkInfoResult models the data returned from the getnetworkinfo
 // command.
 type GetNetworkInfoResult struct {

docs/json_rpc_api.md

@@ -162,21 +162,22 @@ the method name for further details such as parameter and return information.
 |12|[getgenerate](#getgenerate)|N|Return if the server is set to generate coins (mine) or not.|
 |13|[gethashespersec](#gethashespersec)|N|Returns a recent hashes per second performance measurement while generating coins (mining).|
 |14|[getinfo](#getinfo)|Y|Returns a JSON object containing various state info.|
-|15|[getmininginfo](#getmininginfo)|N|Returns a JSON object containing mining-related information.|
+|15|[getmempoolinfo](#getmempoolinfo)|N|Returns a JSON object containing mempool-related information.|
-|16|[getnettotals](#getnettotals)|Y|Returns a JSON object containing network traffic statistics.|
+|16|[getmininginfo](#getmininginfo)|N|Returns a JSON object containing mining-related information.|
-|17|[getnetworkhashps](#getnetworkhashps)|Y|Returns the estimated network hashes per second for the block heights provided by the parameters.|
+|17|[getnettotals](#getnettotals)|Y|Returns a JSON object containing network traffic statistics.|
-|18|[getpeerinfo](#getpeerinfo)|N|Returns information about each connected network peer as an array of json objects.|
+|18|[getnetworkhashps](#getnetworkhashps)|Y|Returns the estimated network hashes per second for the block heights provided by the parameters.|
-|19|[getrawmempool](#getrawmempool)|Y|Returns an array of hashes for all of the transactions currently in the memory pool.|
+|19|[getpeerinfo](#getpeerinfo)|N|Returns information about each connected network peer as an array of json objects.|
-|20|[getrawtransaction](#getrawtransaction)|Y|Returns information about a transaction given its hash.|
+|20|[getrawmempool](#getrawmempool)|Y|Returns an array of hashes for all of the transactions currently in the memory pool.|
-|21|[getwork](#getwork)|N|Returns formatted hash data to work on or checks and submits solved data.<br /><font color="orange">NOTE: Since btcd does not have the wallet integrated to provide payment addresses, btcd must be configured via the `--miningaddr` option to provide which payment addresses to pay created blocks to for this RPC to function.</font>|
+|21|[getrawtransaction](#getrawtransaction)|Y|Returns information about a transaction given its hash.|
-|22|[help](#help)|Y|Returns a list of all commands or help for a specified command.|
+|22|[getwork](#getwork)|N|Returns formatted hash data to work on or checks and submits solved data.<br /><font color="orange">NOTE: Since btcd does not have the wallet integrated to provide payment addresses, btcd must be configured via the `--miningaddr` option to provide which payment addresses to pay created blocks to for this RPC to function.</font>|
-|23|[ping](#ping)|N|Queues a ping to be sent to each connected peer.|
+|23|[help](#help)|Y|Returns a list of all commands or help for a specified command.|
-|24|[sendrawtransaction](#sendrawtransaction)|Y|Submits the serialized, hex-encoded transaction to the local peer and relays it to the network.<br /><font color="orange">btcd does not yet implement the `allowhighfees` parameter, so it has no effect</font>|
+|24|[ping](#ping)|N|Queues a ping to be sent to each connected peer.|
-|25|[setgenerate](#setgenerate) |N|Set the server to generate coins (mine) or not.<br/>NOTE: Since btcd does not have the wallet integrated to provide payment addresses, btcd must be configured via the `--miningaddr` option to provide which payment addresses to pay created blocks to for this RPC to function.|
+|25|[sendrawtransaction](#sendrawtransaction)|Y|Submits the serialized, hex-encoded transaction to the local peer and relays it to the network.<br /><font color="orange">btcd does not yet implement the `allowhighfees` parameter, so it has no effect</font>|
-|26|[stop](#stop)|N|Shutdown btcd.|
+|26|[setgenerate](#setgenerate) |N|Set the server to generate coins (mine) or not.<br/>NOTE: Since btcd does not have the wallet integrated to provide payment addresses, btcd must be configured via the `--miningaddr` option to provide which payment addresses to pay created blocks to for this RPC to function.|
-|27|[submitblock](#submitblock)|Y|Attempts to submit a new serialized, hex-encoded block to the network.|
+|27|[stop](#stop)|N|Shutdown btcd.|
-|28|[validateaddress](#validateaddress)|Y|Verifies the given address is valid.  NOTE: Since btcd does not have a wallet integrated, btcd will only return whether the address is valid or not.|
+|28|[submitblock](#submitblock)|Y|Attempts to submit a new serialized, hex-encoded block to the network.|
-|29|[verifychain](#verifychain)|N|Verifies the block chain database.|
+|29|[validateaddress](#validateaddress)|Y|Verifies the given address is valid.  NOTE: Since btcd does not have a wallet integrated, btcd will only return whether the address is valid or not.|
+|30|[verifychain](#verifychain)|N|Verifies the block chain database.|
 
 <a name="MethodDetails" />
 **5.2 Method Details**<br />
@@ -352,6 +353,18 @@ the method name for further details such as parameter and return information.
 |Example Return|`{`<br />&nbsp;&nbsp;`"version": 70000`<br />&nbsp;&nbsp;`"protocolversion": 70001,  `<br />&nbsp;&nbsp;`"blocks": 298963,`<br />&nbsp;&nbsp;`"timeoffset": 0,`<br />&nbsp;&nbsp;`"connections": 17,`<br />&nbsp;&nbsp;`"proxy": "",`<br />&nbsp;&nbsp;`"difficulty": 8000872135.97,`<br />&nbsp;&nbsp;`"testnet": false,`<br />&nbsp;&nbsp;`"relayfee": 0.00001,`<br />`}`|
 [Return to Overview](#MethodOverview)<br />
 
+***
+<a name="getmempoolinfo"/>
+
+|   |   |
+|---|---|
+|Method|getmempoolinfo|
+|Parameters|None|
+|Description|Returns a JSON object containing mempool-related information.|
+|Returns|`{ (json object)`<br />&nbsp;&nbsp;`"bytes": n,  (numeric) size in bytes of the mempool`<br />&nbsp;&nbsp;`"size": n,  (numeric) number of transactions in the mempool`<br />`}`|
+Example Return|`{`<br />&nbsp;&nbsp;`"bytes": 310768,`<br />&nbsp;&nbsp;`"size": 157,`<br />`}`|
+[Return to Overview](#MethodOverview)<br />
+
 ***
 <a name="getmininginfo"/>
 

rpcserver.go

@@ -146,6 +146,7 @@ var rpcHandlersBeforeInit = map[string]commandHandler{
 	"getgenerate":           handleGetGenerate,
 	"gethashespersec":       handleGetHashesPerSec,
 	"getinfo":               handleGetInfo,
+	"getmempoolinfo":        handleGetMempoolInfo,
 	"getmininginfo":         handleGetMiningInfo,
 	"getnettotals":          handleGetNetTotals,
 	"getnetworkhashps":      handleGetNetworkHashPS,
@@ -1938,6 +1939,23 @@ func handleGetInfo(s *rpcServer, cmd interface{}, closeChan <-chan struct{}) (in
 	return ret, nil
 }
 
+// handleGetMempoolInfo implements the getmempoolinfo command.
+func handleGetMempoolInfo(s *rpcServer, cmd interface{}, closeChan <-chan struct{}) (interface{}, error) {
+	txD := s.server.txMemPool.TxDescs()
+
+	var numBytes int64
+	for _, desc := range txD {
+		numBytes += int64(desc.Tx.MsgTx().SerializeSize())
+	}
+
+	ret := &btcjson.GetMempoolInfoResult{
+		Size:  int64(len(txD)),
+		Bytes: numBytes,
+	}
+
+	return ret, nil
+}
+
 // handleGetMiningInfo implements the getmininginfo command. We only return the
 // fields that are not related to wallet functionality.
 func handleGetMiningInfo(s *rpcServer, cmd interface{}, closeChan <-chan struct{}) (interface{}, error) {

rpcserverhelp.go

@@ -288,6 +288,13 @@ var helpDescsEnUS = map[string]string{
 	// GetInfoCmd help.
 	"getinfo--synopsis": "Returns a JSON object containing various state info.",
 
+	// GetMempoolInfoCmd help.
+	"getmempoolinfo--synopsis": "Returns memory pool information",
+
+	// GetMempoolInfoResult help.
+	"getmempoolinforesult-bytes": "Size in bytes of the mempool",
+	"getmempoolinforesult-size":  "Number of transactions in the mempool",
+
 	// GetMiningInfoResult help.
 	"getmininginforesult-blocks":           "Height of the latest best block",
 	"getmininginforesult-currentblocksize": "Size of the latest best block",
@@ -540,6 +547,7 @@ var rpcResultTypes = map[string][]interface{}{
 	"getgenerate":           []interface{}{(*bool)(nil)},
 	"gethashespersec":       []interface{}{(*float64)(nil)},
 	"getinfo":               []interface{}{(*btcjson.InfoChainResult)(nil)},
+	"getmempoolinfo":        []interface{}{(*btcjson.GetMempoolInfoResult)(nil)},
 	"getmininginfo":         []interface{}{(*btcjson.GetMiningInfoResult)(nil)},
 	"getnettotals":          []interface{}{(*btcjson.GetNetTotalsResult)(nil)},
 	"getnetworkhashps":      []interface{}{(*int64)(nil)},