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Merge #12717: [REST] Handle UTXO retrieval when ignoring the mempool

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9cb9af8 [REST] Handle UTXO retrieval when ignoring the mempool (Roman Zeyde)
1fdc7c4 Make CTxMemPool::isSpent() const (Roman Zeyde)

Pull request description:

  Current REST API always returns empty UTXO when invoked without `/checkmempool/` URL part.

  After the fix:
  ```
  $ curl -s http://localhost:8332/rest/getutxos/0e3e2357e806b6cdb1f70b54c3a3a17b6714ee1f0e68bebb44a74b1efd512098-0.json | jq
  {
    "chainHeight": 514109,
    "chaintipHash": "0000000000000000001fe76d1445e8a6432fd2de04261dc9c5915311dc7ad6de",
    "bitmap": "1",
    "utxos": [
      {
        "height": 1,
        "value": 50,
        "scriptPubKey": {
          "asm": "0496b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52da7589379515d4e0a604f8141781e62294721166bf621e73a82cbf2342c858ee OP_CHECKSIG",
          "hex": "410496b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52da7589379515d4e0a604f8141781e62294721166bf621e73a82cbf2342c858eeac",
          "reqSigs": 1,
          "type": "pubkey",
          "addresses": [
            "12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX"
          ]
        }
      }
    ]
  }
  ```

  Before the fix:
  ```
  $ curl -s http://localhost:8332/rest/getutxos/0e3e2357e806b6cdb1f70b54c3a3a17b6714ee1f0e68bebb44a74b1efd512098-0.json | jq
  {
    "chainHeight": 514109,
    "chaintipHash": "0000000000000000001fe76d1445e8a6432fd2de04261dc9c5915311dc7ad6de",
    "bitmap": "0",
    "utxos": []
  }
  ```

Tree-SHA512: 994a350cb34a3c8f5a7afbc169c6b177c5be6cf223b2071c62d63644819d416d3e10d1c58b244d9d351bae7233d2974aa5e9ebadd1b5d6218f5245558675be0d
This commit is contained in:
Wladimir J. van der Laan
2018-03-27 21:31:27 +02:00
parent 534b8fa560 9cb9af8c41
commit ac898b689c
4 changed files with 54 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/rest.cpp
View File

@@ -487,26 +487,28 @@ static bool rest_getutxos(HTTPRequest* req, const std::string& strURIPart)
std::vector<bool> hits;
bitmap.resize((vOutPoints.size() + 7) / 8);
{
LOCK2(cs_main, mempool.cs);
CCoinsView viewDummy;
CCoinsViewCache view(&viewDummy);
CCoinsViewCache& viewChain = *pcoinsTip;
CCoinsViewMemPool viewMempool(&viewChain, mempool);
if (fCheckMemPool)
view.SetBackend(viewMempool); // switch cache backend to db+mempool in case user likes to query mempool
for (size_t i = 0; i < vOutPoints.size(); i++) {
bool hit = false;
Coin coin;
if (view.GetCoin(vOutPoints[i], coin) && !mempool.isSpent(vOutPoints[i])) {
hit = true;
outs.emplace_back(std::move(coin));
auto process_utxos = [&vOutPoints, &outs, &hits](const CCoinsView& view, const CTxMemPool& mempool) {
for (const COutPoint& vOutPoint : vOutPoints) {
Coin coin;
bool hit = !mempool.isSpent(vOutPoint) && view.GetCoin(vOutPoint, coin);
hits.push_back(hit);
if (hit) outs.emplace_back(std::move(coin));
}
};
hits.push_back(hit);
if (fCheckMemPool) {
// use db+mempool as cache backend in case user likes to query mempool
LOCK2(cs_main, mempool.cs);
CCoinsViewCache& viewChain = *pcoinsTip;
CCoinsViewMemPool viewMempool(&viewChain, mempool);
process_utxos(viewMempool, mempool);
} else {
LOCK(cs_main); // no need to lock mempool!
process_utxos(*pcoinsTip, CTxMemPool());
}
for (size_t i = 0; i < hits.size(); ++i) {
const bool hit = hits[i];
bitmapStringRepresentation.append(hit ? "1" : "0"); // form a binary string representation (human-readable for json output)
bitmap[i / 8] |= ((uint8_t)hit) << (i % 8);
}