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authorPieter Wuille <pieter.wuille@gmail.com>2017-02-09 17:24:30 -0800
committerWladimir J. van der Laan <laanwj@gmail.com>2017-05-03 08:08:27 +0200
commitbd1f138e73aef0123f2d2e8f456e3268ddd41175 (patch)
tree718e252ddc87874436851019df0cad8fe8b92ae7 /src
parent8f3e38477e30abd9dd0e24a4d612126117f7793c (diff)
Add getchaintxstats RPC
Diffstat (limited to 'src')
-rw-r--r--src/rpc/blockchain.cpp66
-rw-r--r--src/rpc/client.cpp1
2 files changed, 67 insertions, 0 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index e2e244a5f1..aec102c9a5 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -1415,10 +1415,76 @@ UniValue reconsiderblock(const JSONRPCRequest& request)
return NullUniValue;
}
+UniValue getchaintxstats(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() > 2)
+ throw std::runtime_error(
+ "getchaintxstats ( nblocks blockhash )\n"
+ "\nCompute statistics about the total number and rate of transactions in the chain.\n"
+ "\nArguments:\n"
+ "1. nblocks (numeric, optional) Size of the window in number of blocks (default: one month).\n"
+ "2. \"blockhash\" (string, optional) The hash of the block that ends the window.\n"
+ "\nResult:\n"
+ "{\n"
+ " \"time\": xxxxx, (numeric) The timestamp for the statistics in UNIX format.\n"
+ " \"txcount\": xxxxx, (numeric) The total number of transactions in the chain up to that point.\n"
+ " \"txrate\": x.xx, (numeric) The average rate of transactions per second in the window.\n"
+ "}\n"
+ "\nExamples:\n"
+ + HelpExampleCli("getchaintxstats", "")
+ + HelpExampleRpc("getchaintxstats", "2016")
+ );
+
+ const CBlockIndex* pindex;
+ int blockcount = 30 * 24 * 60 * 60 / Params().GetConsensus().nPowTargetSpacing; // By default: 1 month
+
+ if (request.params.size() > 0 && !request.params[0].isNull()) {
+ blockcount = request.params[0].get_int();
+ }
+
+ bool havehash = request.params.size() > 1 && !request.params[1].isNull();
+ uint256 hash;
+ if (havehash) {
+ hash = uint256S(request.params[1].get_str());
+ }
+
+ {
+ LOCK(cs_main);
+ if (havehash) {
+ auto it = mapBlockIndex.find(hash);
+ if (it == mapBlockIndex.end()) {
+ throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
+ }
+ pindex = it->second;
+ if (!chainActive.Contains(pindex)) {
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "Block is not in main chain");
+ }
+ } else {
+ pindex = chainActive.Tip();
+ }
+ }
+
+ if (blockcount < 1 || blockcount >= pindex->nHeight) {
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid block count: should be between 1 and the block's height");
+ }
+
+ const CBlockIndex* pindexPast = pindex->GetAncestor(pindex->nHeight - blockcount);
+ int nTimeDiff = pindex->GetMedianTimePast() - pindexPast->GetMedianTimePast();
+ int nTxDiff = pindex->nChainTx - pindexPast->nChainTx;
+
+ UniValue ret(UniValue::VOBJ);
+ ret.push_back(Pair("time", (int64_t)pindex->nTime));
+ ret.push_back(Pair("txcount", (int64_t)pindex->nChainTx));
+ ret.push_back(Pair("txrate", ((double)nTxDiff) / nTimeDiff));
+
+ return ret;
+}
+
static const CRPCCommand commands[] =
{ // category name actor (function) okSafe argNames
// --------------------- ------------------------ ----------------------- ------ ----------
{ "blockchain", "getblockchaininfo", &getblockchaininfo, true, {} },
+ { "blockchain", "getchaintxstats", &getchaintxstats, true, {"nblocks", "blockhash"} },
{ "blockchain", "getbestblockhash", &getbestblockhash, true, {} },
{ "blockchain", "getblockcount", &getblockcount, true, {} },
{ "blockchain", "getblock", &getblock, true, {"blockhash","verbose"} },
diff --git a/src/rpc/client.cpp b/src/rpc/client.cpp
index 941bdd9379..8454e99d3c 100644
--- a/src/rpc/client.cpp
+++ b/src/rpc/client.cpp
@@ -79,6 +79,7 @@ static const CRPCConvertParam vRPCConvertParams[] =
{ "listunspent", 2, "addresses" },
{ "getblock", 1, "verbose" },
{ "getblockheader", 1, "verbose" },
+ { "getchaintxstats", 0, "nblocks" },
{ "gettransaction", 1, "include_watchonly" },
{ "getrawtransaction", 1, "verbose" },
{ "createrawtransaction", 0, "inputs" },