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WIP: implemented getlastblockheader.

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This commit is contained in:
Jianping Wu 2019-03-05 21:26:08 -08:00
parent 8b1d430007
commit 5e39efc98b
1 changed files with 80 additions and 12 deletions
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92
src/rpc/blockchain.cpp
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@ -703,17 +703,12 @@ UniValue getblockheader(const JSONRPCRequest& request)
}
// Cryptonote RPC API: getblockheaderbyheight
UniValue getblockheaderbyheight(const JSONRPCRequest& request)
// Cryptonote RPC API: getlastblockheader
UniValue getlastblockheader(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
throw std::runtime_error(
"getblockheader \"hash\" ( verbose )\n"
"\nIf verbose is false, returns a string that is serialized, hex-encoded data for blockheader 'hash'.\n"
"If verbose is true, returns an Object with information about blockheader <hash>.\n"
"\nArguments:\n"
"1. \"height\" (numeric, required) The block height\n"
"2. verbose (boolean, optional, default=true) true for a json object, false for the hex encoded data\n"
"getlastblockheader\n"
"\nResult (for verbose = true):\n"
"{\n"
" \"hash\" : \"hash\", (string) the block hash (same as provided)\n"
@ -732,11 +727,80 @@ UniValue getblockheaderbyheight(const JSONRPCRequest& request)
" \"previousblockhash\" : \"hash\", (string) The hash of the previous block\n"
" \"nextblockhash\" : \"hash\", (string) The hash of the next block\n"
"}\n"
"\nResult (for verbose=false):\n"
"\"data\" (string) A string that is serialized, hex-encoded data for block 'hash'.\n"
"\nExamples:\n"
+ HelpExampleCli("getblockheader", "\"e2acdf2dd19a702e5d12a925f1e984b01e47a933562ca893656d4afb38b44ee3\"")
+ HelpExampleRpc("getblockheader", "\"e2acdf2dd19a702e5d12a925f1e984b01e47a933562ca893656d4afb38b44ee3\"")
+ HelpExampleCli("getlastblockheader", "")
);
LOCK(cs_main);
CBlockIndex* pblockindex = chainActive.Tip();
CBlock block;
if (!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus())) {
throw JSONRPCError(RPC_MISC_ERROR, "Block not found on disk");
}
CTransactionRef coinbaseTx = block.vtx[0];
if (!coinbaseTx->IsCoinBase()) {
throw JSONRPCError(RPC_MISC_ERROR, "Could not find coinbase");
}
//TODO: easier way to do this?
CAmount coinbaseValue = coinbaseTx->GetValueOut();
UniValue result(UniValue::VOBJ);
// TODO: read major/minor versions from cn header.
result.push_back(Pair("major_version", (uint64_t)0));
result.push_back(Pair("minor_version", (uint64_t)0));
result.push_back(Pair("timestamp", (uint64_t)pblockindex->nTime));
result.push_back(Pair("prev_hash", pblockindex->pprev->GetBlockHash().GetHex()));
result.push_back(Pair("nonce", (uint64_t)pblockindex->nNonce));
result.push_back(Pair("orphan_status", false));
result.push_back(Pair("height", (uint64_t)pblockindex->nHeight));
const uint64_t depth = chainActive.Height() - pblockindex->nHeight + 1; // Same as confirmations.
result.push_back(Pair("depth", (uint64_t)depth));
result.push_back(Pair("hash", pblockindex->GetBlockHash().GetHex()));
result.push_back(Pair("difficulty", GetDifficulty(pblockindex)));
// TODO: implement cumulative_difficulty
result.push_back(Pair("cumulative_difficulty", 0));
result.push_back(Pair("reward", (uint64_t)coinbaseValue));
result.push_back(Pair("block_size", (int)::GetBlockWeight(block)));
result.push_back(Pair("num_txes", (uint64_t)pblockindex->nTx));
result.push_back(Pair("pow_hash", pblockindex->GetBlockPoWHash().GetHex()));
result.push_back(Pair("long_term_weight", 0.0)); // Not implemented
return result;
}
// Cryptonote RPC API: getblockheaderbyheight
UniValue getblockheaderbyheight(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
throw std::runtime_error(
"getblockheaderbyheight \"height\" \n"
"\nArguments:\n"
"1. \"height\" (numeric, required) The block height\n"
"\nResult (for verbose = true):\n"
"{\n"
" \"hash\" : \"hash\", (string) the block hash (same as provided)\n"
" \"confirmations\" : n, (numeric) The number of confirmations, or -1 if the block is not on the main chain\n"
" \"height\" : n, (numeric) The block height or index\n"
" \"version\" : n, (numeric) The block version\n"
" \"versionHex\" : \"00000000\", (string) The block version formatted in hexadecimal\n"
" \"merkleroot\" : \"xxxx\", (string) The merkle root\n"
" \"time\" : ttt, (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"mediantime\" : ttt, (numeric) The median block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"nonce\" : n, (numeric) The nonce\n"
" \"bits\" : \"1d00ffff\", (string) The bits\n"
" \"difficulty\" : x.xxx, (numeric) The difficulty\n"
" \"chainwork\" : \"0000...1f3\" (string) Expected number of hashes required to produce the current chain (in hex)\n"
" \"nTx\" : n, (numeric) The number of transactions in the block.\n"
" \"previousblockhash\" : \"hash\", (string) The hash of the previous block\n"
" \"nextblockhash\" : \"hash\", (string) The hash of the next block\n"
"}\n"
"\nExamples:\n"
+ HelpExampleCli("getblockheaderbyheight", "100")
);
LOCK(cs_main);
@ -1710,6 +1774,10 @@ static const CRPCCommand commands[] =
{ "blockchain", "preciousblock", &preciousblock, {"blockhash"} },
// Cryptonote RPC APIs, used for mining pool.
{ "blockchain", "getlastblockheader", &getlastblockheader, {} },
{ "blockchain", "getblockheaderbyheight", &getblockheaderbyheight, {"height"} },
/* Not shown in help */
{ "hidden", "invalidateblock", &invalidateblock, {"blockhash"} },
{ "hidden", "reconsiderblock", &reconsiderblock, {"blockhash"} },