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authorWladimir J. van der Laan <laanwj@gmail.com>2018-03-27 21:31:27 +0200
committerWladimir J. van der Laan <laanwj@gmail.com>2018-03-27 21:32:02 +0200
commitac898b689c660df8a79cc64997dda66d36eb59dd (patch)
treecd88fbc86282e0e11f974048c0eae176c3b81b73
parent534b8fa560a700c0641e2700b92e40dc1a0066aa (diff)
parent9cb9af8c41e4a7abd6b3e011127c4274557ca7e4 (diff)
downloadbitcoin-ac898b689c660df8a79cc64997dda66d36eb59dd.tar.xz
Merge #12717: [REST] Handle UTXO retrieval when ignoring the mempool
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
-rw-r--r--src/rest.cpp38
-rw-r--r--src/txmempool.cpp2
-rw-r--r--src/txmempool.h2
-rwxr-xr-xtest/functional/interface_rest.py39
4 files changed, 54 insertions, 27 deletions
diff --git a/src/rest.cpp b/src/rest.cpp
index bbd8185355..5871b554a6 100644
--- a/src/rest.cpp
+++ b/src/rest.cpp
@@ -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));
}
+ };
+
+ 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());
+ }
- hits.push_back(hit);
+ 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);
}
diff --git a/src/txmempool.cpp b/src/txmempool.cpp
index d1edde284f..cc639288d3 100644
--- a/src/txmempool.cpp
+++ b/src/txmempool.cpp
@@ -339,7 +339,7 @@ CTxMemPool::CTxMemPool(CBlockPolicyEstimator* estimator) :
nCheckFrequency = 0;
}
-bool CTxMemPool::isSpent(const COutPoint& outpoint)
+bool CTxMemPool::isSpent(const COutPoint& outpoint) const
{
LOCK(cs);
return mapNextTx.count(outpoint);
diff --git a/src/txmempool.h b/src/txmempool.h
index 08a3421015..699f6b554b 100644
--- a/src/txmempool.h
+++ b/src/txmempool.h
@@ -550,7 +550,7 @@ public:
void _clear(); //lock free
bool CompareDepthAndScore(const uint256& hasha, const uint256& hashb);
void queryHashes(std::vector<uint256>& vtxid);
- bool isSpent(const COutPoint& outpoint);
+ bool isSpent(const COutPoint& outpoint) const;
unsigned int GetTransactionsUpdated() const;
void AddTransactionsUpdated(unsigned int n);
/**
diff --git a/test/functional/interface_rest.py b/test/functional/interface_rest.py
index c6cb4c54cd..6f585f6825 100755
--- a/test/functional/interface_rest.py
+++ b/test/functional/interface_rest.py
@@ -85,7 +85,7 @@ class RESTTest (BitcoinTestFramework):
#######################################
# GETUTXOS: query an unspent outpoint #
#######################################
- json_request = '/checkmempool/'+txid+'-'+str(n)
+ json_request = '/'+txid+'-'+str(n)
json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
json_obj = json.loads(json_string)
@@ -100,7 +100,7 @@ class RESTTest (BitcoinTestFramework):
#################################################
# GETUTXOS: now query an already spent outpoint #
#################################################
- json_request = '/checkmempool/'+vintx+'-0'
+ json_request = '/'+vintx+'-0'
json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
json_obj = json.loads(json_string)
@@ -117,7 +117,7 @@ class RESTTest (BitcoinTestFramework):
##################################################
# GETUTXOS: now check both with the same request #
##################################################
- json_request = '/checkmempool/'+txid+'-'+str(n)+'/'+vintx+'-0'
+ json_request = '/'+txid+'-'+str(n)+'/'+vintx+'-0'
json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
json_obj = json.loads(json_string)
assert_equal(len(json_obj['utxos']), 1)
@@ -151,23 +151,48 @@ class RESTTest (BitcoinTestFramework):
txid = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 0.1)
json_string = http_get_call(url.hostname, url.port, '/rest/tx/'+txid+self.FORMAT_SEPARATOR+"json")
json_obj = json.loads(json_string)
- vintx = json_obj['vin'][0]['txid'] # get the vin to later check for utxo (should be spent by then)
+ # get the spent output to later check for utxo (should be spent by then)
+ spent = '{}-{}'.format(json_obj['vin'][0]['txid'], json_obj['vin'][0]['vout'])
# get n of 0.1 outpoint
n = 0
for vout in json_obj['vout']:
if vout['value'] == 0.1:
n = vout['n']
+ spending = '{}-{}'.format(txid, n)
- json_request = '/'+txid+'-'+str(n)
+ json_request = '/'+spending
json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
json_obj = json.loads(json_string)
- assert_equal(len(json_obj['utxos']), 0) #there should be an outpoint because it has just added to the mempool
+ assert_equal(len(json_obj['utxos']), 0) #there should be no outpoint because it has just added to the mempool
- json_request = '/checkmempool/'+txid+'-'+str(n)
+ json_request = '/checkmempool/'+spending
json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
json_obj = json.loads(json_string)
assert_equal(len(json_obj['utxos']), 1) #there should be an outpoint because it has just added to the mempool
+ json_request = '/'+spent
+ json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
+ json_obj = json.loads(json_string)
+ assert_equal(len(json_obj['utxos']), 1) #there should be an outpoint because its spending tx is not confirmed
+
+ json_request = '/checkmempool/'+spent
+ json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
+ json_obj = json.loads(json_string)
+ assert_equal(len(json_obj['utxos']), 0) #there should be no outpoint because it has just spent (by mempool tx)
+
+ self.nodes[0].generate(1)
+ self.sync_all()
+
+ json_request = '/'+spending
+ json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
+ json_obj = json.loads(json_string)
+ assert_equal(len(json_obj['utxos']), 1) #there should be an outpoint because it was mined
+
+ json_request = '/checkmempool/'+spending
+ json_string = http_get_call(url.hostname, url.port, '/rest/getutxos'+json_request+self.FORMAT_SEPARATOR+'json')
+ json_obj = json.loads(json_string)
+ assert_equal(len(json_obj['utxos']), 1) #there should be an outpoint because it was mined
+
#do some invalid requests
json_request = '{"checkmempool'
response = http_post_call(url.hostname, url.port, '/rest/getutxos'+self.FORMAT_SEPARATOR+'json', json_request, True)