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author | Akio Nakamura <nakamura@dgtechnologies.co.jp> | 2017-08-10 16:53:59 +0900 |
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committer | Akio Nakamura <nakamura@dgtechnologies.co.jp> | 2017-08-25 18:32:45 +0900 |
commit | 33366768afe21ff85259c0712176604aab56d9ae (patch) | |
tree | eefbc66cbe5a273a07d654512d6cfe92b4b5c9b5 /src/rpc | |
parent | 2c9f5ecf3fd4d6eacaea730df48681e11adbea16 (diff) | |
download | bitcoin-33366768afe21ff85259c0712176604aab56d9ae.tar.xz |
Fix getchaintxstats()
1. Calculate nblocks more adaptive.
If not specify nblocks-parameter, illegal parameter error
will happen when target block height is below blocks for 1 month.
To avoid this error, set default nblocks to
min(blocks for 1 month, target block's height - 1)
And allowing 0 so that this RPC works good even if target block is
genesis block or 1st block.
2. Correct error message.
nblocks accepts [0 .. block's height -1] . so fix as following:
"Invalid block count: should be between 0 and the block's height - 1"
3. Add check 0-divide.
If nTimeDiff = 0 then returns {... "txrate":} and
bitcoin-cli cannot handle the response.
To avoid this error, do not return "txrate" if nTimeDiff = 0.
4. Add following 3 elements to the return object.
1) 'window_block_count' : Size of the window in number of blocks.
2) 'window_tx_count' : The number of transactions in the window.
3) 'window_interval' : The elapsed time in the window.
They clarify how 'txrate' is calculated. 2) and 3) are returned
only if 'window_block_count' is a positive value.
5. Improve help text for 'time' as following.
'The timestamp for the final block in the window in UNIX format.
Diffstat (limited to 'src/rpc')
-rw-r--r-- | src/rpc/blockchain.cpp | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp index 34f553f3b0..f7fef5ffea 100644 --- a/src/rpc/blockchain.cpp +++ b/src/rpc/blockchain.cpp @@ -1477,9 +1477,12 @@ UniValue getchaintxstats(const JSONRPCRequest& request) "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" + " \"time\": xxxxx, (numeric) The timestamp for the final block in the window in UNIX format.\n" + " \"txcount\": xxxxx, (numeric) The total number of transactions in the chain up to that point.\n" + " \"window_block_count\": xxxxx, (numeric) Size of the window in number of blocks.\n" + " \"window_tx_count\": xxxxx, (numeric) The number of transactions in the window. Only returned if \"window_block_count\" is > 0.\n" + " \"window_interval\": xxxxx, (numeric) The elapsed time in the window in seconds. Only returned if \"window_block_count\" is > 0.\n" + " \"txrate\": x.xx, (numeric) The average rate of transactions per second in the window. Only returned if \"window_interval\" is > 0.\n" "}\n" "\nExamples:\n" + HelpExampleCli("getchaintxstats", "") @@ -1489,10 +1492,6 @@ UniValue getchaintxstats(const JSONRPCRequest& request) const CBlockIndex* pindex; int blockcount = 30 * 24 * 60 * 60 / Params().GetConsensus().nPowTargetSpacing; // By default: 1 month - if (!request.params[0].isNull()) { - blockcount = request.params[0].get_int(); - } - bool havehash = !request.params[1].isNull(); uint256 hash; if (havehash) { @@ -1515,8 +1514,14 @@ UniValue getchaintxstats(const JSONRPCRequest& request) } } - if (blockcount < 1 || blockcount >= pindex->nHeight) { - throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid block count: should be between 1 and the block's height"); + if (request.params[0].isNull()) { + blockcount = std::max(0, std::min(blockcount, pindex->nHeight - 1)); + } else { + blockcount = request.params[0].get_int(); + + if (blockcount < 0 || (blockcount > 0 && blockcount >= pindex->nHeight)) { + throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid block count: should be between 0 and the block's height - 1"); + } } const CBlockIndex* pindexPast = pindex->GetAncestor(pindex->nHeight - blockcount); @@ -1526,7 +1531,14 @@ UniValue getchaintxstats(const JSONRPCRequest& request) 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)); + ret.push_back(Pair("window_block_count", blockcount)); + if (blockcount > 0) { + ret.push_back(Pair("window_tx_count", nTxDiff)); + ret.push_back(Pair("window_interval", nTimeDiff)); + if (nTimeDiff > 0) { + ret.push_back(Pair("txrate", ((double)nTxDiff) / nTimeDiff)); + } + } return ret; } |