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-rw-r--r--src/rpc/blockchain.cpp67
1 files changed, 66 insertions, 1 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 6c005068d8..e53ed1c1b1 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -302,7 +302,7 @@ UniValue getmempoolancestors(const UniValue& params, bool fHelp)
"1. \"txid\" (string, required) The transaction id (must be in mempool)\n"
"2. verbose (boolean, optional, default=false) true for a json object, false for array of transaction ids\n"
"\nResult (for verbose=false):\n"
- "[ (json array of string)\n"
+ "[ (json array of strings)\n"
" \"transactionid\" (string) The transaction id of an in-mempool ancestor transaction\n"
" ,...\n"
"]\n"
@@ -356,6 +356,70 @@ UniValue getmempoolancestors(const UniValue& params, bool fHelp)
}
}
+UniValue getmempooldescendants(const UniValue& params, bool fHelp)
+{
+ if (fHelp || params.size() < 1 || params.size() > 2) {
+ throw runtime_error(
+ "getmempooldescendants txid (verbose)\n"
+ "\nIf txid is in the mempool, returns all in-mempool descendants.\n"
+ "\nArguments:\n"
+ "1. \"txid\" (string, required) The transaction id (must be in mempool)\n"
+ "2. verbose (boolean, optional, default=false) true for a json object, false for array of transaction ids\n"
+ "\nResult (for verbose=false):\n"
+ "[ (json array of strings)\n"
+ " \"transactionid\" (string) The transaction id of an in-mempool descendant transaction\n"
+ " ,...\n"
+ "]\n"
+ "\nResult (for verbose=true):\n"
+ "{ (json object)\n"
+ " \"transactionid\" : { (json object)\n"
+ + EntryDescriptionString()
+ + " }, ...\n"
+ "}\n"
+ "\nExamples\n"
+ + HelpExampleCli("getmempooldescendants", "\"mytxid\"")
+ + HelpExampleRpc("getmempooldescendants", "\"mytxid\"")
+ );
+ }
+
+ bool fVerbose = false;
+ if (params.size() > 1)
+ fVerbose = params[1].get_bool();
+
+ uint256 hash = ParseHashV(params[0], "parameter 1");
+
+ LOCK(mempool.cs);
+
+ CTxMemPool::txiter it = mempool.mapTx.find(hash);
+ if (it == mempool.mapTx.end()) {
+ throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not in mempool");
+ }
+
+ CTxMemPool::setEntries setDescendants;
+ mempool.CalculateDescendants(it, setDescendants);
+ // CTxMemPool::CalculateDescendants will include the given tx
+ setDescendants.erase(it);
+
+ if (!fVerbose) {
+ UniValue o(UniValue::VARR);
+ BOOST_FOREACH(CTxMemPool::txiter descendantIt, setDescendants) {
+ o.push_back(descendantIt->GetTx().GetHash().ToString());
+ }
+
+ return o;
+ } else {
+ UniValue o(UniValue::VOBJ);
+ BOOST_FOREACH(CTxMemPool::txiter descendantIt, setDescendants) {
+ const CTxMemPoolEntry &e = *descendantIt;
+ const uint256& hash = e.GetTx().GetHash();
+ UniValue info(UniValue::VOBJ);
+ entryToJSON(info, e);
+ o.push_back(Pair(hash.ToString(), info));
+ }
+ return o;
+ }
+}
+
UniValue getblockhash(const UniValue& params, bool fHelp)
{
if (fHelp || params.size() != 1)
@@ -1081,6 +1145,7 @@ static const CRPCCommand commands[] =
{ "blockchain", "getchaintips", &getchaintips, true },
{ "blockchain", "getdifficulty", &getdifficulty, true },
{ "blockchain", "getmempoolancestors", &getmempoolancestors, true },
+ { "blockchain", "getmempooldescendants", &getmempooldescendants, true },
{ "blockchain", "getmempoolinfo", &getmempoolinfo, true },
{ "blockchain", "getrawmempool", &getrawmempool, true },
{ "blockchain", "gettxout", &gettxout, true },