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Merge pull request #5386

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1b91be4 Report status of chain tips (Pieter Wuille)
This commit is contained in:
Wladimir J. van der Laan
2014-12-01 11:40:02 +01:00
parent b248a38aa5 1b91be49f5
commit 0ddf4416cc
3 changed files with 34 additions and 1 deletions
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27
src/rpcblockchain.cpp
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@@ -496,11 +496,13 @@ Value getchaintips(const Array& params, bool fHelp)
" \"height\": xxxx, (numeric) height of the chain tip\n"
" \"hash\": \"xxxx\", (string) block hash of the tip\n"
" \"branchlen\": 0 (numeric) zero for main chain\n"
" \"status\": \"active\" (string) \"active\" for the main chain\n"
" },\n"
" {\n"
" \"height\": xxxx,\n"
" \"hash\": \"xxxx\",\n"
" \"branchlen\": 1 (numeric) length of branch connecting the tip to the main chain\n"
" \"status\": \"xxxx\" (string) status of the chain (active, valid-fork, valid-headers, headers-only, invalid)\n"
" }\n"
"]\n"
"\nExamples:\n"
@@ -521,6 +523,9 @@ Value getchaintips(const Array& params, bool fHelp)
setTips.erase(pprev);
}
// Always report the currently active tip.
setTips.insert(chainActive.Tip());
/* Construct the output array. */
Array res;
BOOST_FOREACH(const CBlockIndex* block, setTips)
@@ -532,6 +537,28 @@ Value getchaintips(const Array& params, bool fHelp)
const int branchLen = block->nHeight - chainActive.FindFork(block)->nHeight;
obj.push_back(Pair("branchlen", branchLen));
string status;
if (chainActive.Contains(block)) {
// This block is part of the currently active chain.
status = "active";
} else if (block->nStatus & BLOCK_FAILED_MASK) {
// This block or one of its ancestors is invalid.
status = "invalid";
} else if (block->nChainTx == 0) {
// This block cannot be connected because full block data for it or one of its parents is missing.
status = "headers-only";
} else if (block->IsValid(BLOCK_VALID_SCRIPTS)) {
// This block is fully validated, but no longer part of the active chain. It was probably the active block once, but was reorganized.
status = "valid-fork";
} else if (block->IsValid(BLOCK_VALID_TREE)) {
// The headers for this block are valid, but it has not been validated. It was probably never part of the most-work chain.
status = "valid-headers";
} else {
// No clue.
status = "unknown";
}
obj.push_back(Pair("status", status));
res.push_back(obj);
}