Merge #11021: [rpc] fix getchaintxstats()
07704c1
Add some tests for getchaintxstats (Akio Nakamura)3336676
Fix getchaintxstats() (Akio Nakamura) Pull request description: 1. calculate nblocks more adaptive. -> set default nblocks to min (blocks for 1 month, target block's height - 1) -> before PR: if not specify nblocks-parameter, illegal parameter error will happen when target block height is below nblocks. 2. correct error message. -> nblocks accepts [1 .. block's height -1] . so add a word "-1". 3. add check 0-divide. -> if nTimeDiff = 0 then use UniValue(UniValue::VNULL) and returns {... "txrate": null} . -> before PR: if nTimeDiff = 0 then returns {... "txrate":} and bitcoin-cli cannot handle the response. Tree-SHA512: e1962ce7bb05a5bc7dec03eb04a8e7578f50fdb68927fcfc0a2232905ef4d679293eee148ebe0866682d209a8c458d21fbe71715e7311adb81f37089aae1ed93
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commit
90926db238
2 changed files with 44 additions and 10 deletions
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@ -1484,9 +1484,12 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
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"2. \"blockhash\" (string, optional) The hash of the block that ends the window.\n"
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"\nResult:\n"
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"{\n"
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" \"time\": xxxxx, (numeric) The timestamp for the statistics in UNIX format.\n"
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" \"time\": xxxxx, (numeric) The timestamp for the final block in the window in UNIX format.\n"
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" \"txcount\": xxxxx, (numeric) The total number of transactions in the chain up to that point.\n"
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" \"txrate\": x.xx, (numeric) The average rate of transactions per second in the window.\n"
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" \"window_block_count\": xxxxx, (numeric) Size of the window in number of blocks.\n"
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" \"window_tx_count\": xxxxx, (numeric) The number of transactions in the window. Only returned if \"window_block_count\" is > 0.\n"
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" \"window_interval\": xxxxx, (numeric) The elapsed time in the window in seconds. Only returned if \"window_block_count\" is > 0.\n"
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" \"txrate\": x.xx, (numeric) The average rate of transactions per second in the window. Only returned if \"window_interval\" is > 0.\n"
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"}\n"
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"\nExamples:\n"
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+ HelpExampleCli("getchaintxstats", "")
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@ -1496,10 +1499,6 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
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const CBlockIndex* pindex;
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int blockcount = 30 * 24 * 60 * 60 / Params().GetConsensus().nPowTargetSpacing; // By default: 1 month
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if (!request.params[0].isNull()) {
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blockcount = request.params[0].get_int();
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}
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bool havehash = !request.params[1].isNull();
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uint256 hash;
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if (havehash) {
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@ -1524,8 +1523,14 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
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assert(pindex != nullptr);
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if (blockcount < 1 || blockcount >= pindex->nHeight) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid block count: should be between 1 and the block's height");
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if (request.params[0].isNull()) {
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blockcount = std::max(0, std::min(blockcount, pindex->nHeight - 1));
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} else {
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blockcount = request.params[0].get_int();
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if (blockcount < 0 || (blockcount > 0 && blockcount >= pindex->nHeight)) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid block count: should be between 0 and the block's height - 1");
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}
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}
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const CBlockIndex* pindexPast = pindex->GetAncestor(pindex->nHeight - blockcount);
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@ -1535,7 +1540,14 @@ UniValue getchaintxstats(const JSONRPCRequest& request)
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UniValue ret(UniValue::VOBJ);
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ret.push_back(Pair("time", (int64_t)pindex->nTime));
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ret.push_back(Pair("txcount", (int64_t)pindex->nChainTx));
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ret.push_back(Pair("window_block_count", blockcount));
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if (blockcount > 0) {
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ret.push_back(Pair("window_tx_count", nTxDiff));
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ret.push_back(Pair("window_interval", nTimeDiff));
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if (nTimeDiff > 0) {
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ret.push_back(Pair("txrate", ((double)nTxDiff) / nTimeDiff));
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}
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}
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return ret;
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}
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@ -81,6 +81,28 @@ class BlockchainTest(BitcoinTestFramework):
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# we have to round because of binary math
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assert_equal(round(chaintxstats['txrate'] * 600, 10), Decimal(1))
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b1 = self.nodes[0].getblock(self.nodes[0].getblockhash(1))
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b200 = self.nodes[0].getblock(self.nodes[0].getblockhash(200))
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time_diff = b200['mediantime'] - b1['mediantime']
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chaintxstats = self.nodes[0].getchaintxstats()
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assert_equal(chaintxstats['time'], b200['time'])
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assert_equal(chaintxstats['txcount'], 201)
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assert_equal(chaintxstats['window_block_count'], 199)
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assert_equal(chaintxstats['window_tx_count'], 199)
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assert_equal(chaintxstats['window_interval'], time_diff)
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assert_equal(round(chaintxstats['txrate'] * time_diff, 10), Decimal(199))
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chaintxstats = self.nodes[0].getchaintxstats(blockhash=b1['hash'])
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assert_equal(chaintxstats['time'], b1['time'])
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assert_equal(chaintxstats['txcount'], 2)
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assert_equal(chaintxstats['window_block_count'], 0)
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assert('window_tx_count' not in chaintxstats)
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assert('window_interval' not in chaintxstats)
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assert('txrate' not in chaintxstats)
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assert_raises_jsonrpc(-8, "Invalid block count: should be between 0 and the block's height - 1", self.nodes[0].getchaintxstats, 201)
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def _test_gettxoutsetinfo(self):
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node = self.nodes[0]
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res = node.gettxoutsetinfo()
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