void ResultCollectorImpl::collect(const QueryResult& queryResults)
{
if (queryResults.hasError())
{
m_result.setError(m_result.getErrorMsg() + queryResults.getErrorMsg());
}
else
{
m_result.setTotalHits(m_result.getTotalHits() + queryResults.getTotalHits());
if (queryResults.getTimeCost() > m_result.getTimeCost())
{
m_result.setTimeCost(queryResults.getTimeCost());
}
shardid_t shardId = -1;
QueryResult::Iterator it = queryResults.iterator();
while (it.hasNext())
{
const ResultDocPtr& pDoc = it.next();
m_pResultQueue->insert(pDoc);
shardId = pDoc->getShardId();
}
const QueryTracerPtr& pTracer = queryResults.getTracer();
if (pTracer.isNotNull())
{
if (m_result.getTracer().isNull())
{
m_result.setTracer(new QueryTracer("proxy", pTracer->getLevel()));
}
QueryTracerPtr& pResTracer = m_result.getTracer();
string str;
NumberFormatter::append(str, shardId);
pResTracer->addChildTracer(pTracer)->prependPath(str);
}
}
}
void SearchShardsBase::collectPhaseTwoResult()
{
FX_DEBUG("Collect phase two result");
SEARCH_LATENCY_BEGIN();
QueryResult phaseTwoResult;
const QueryResult& qResult = m_pResultCollector->getResult();
phaseTwoResult.setTracer(qResult.getTracer());
int64_t nMaxTimeCost = 0;
m_shardResults.clear();
for (size_t i = 0; i < m_requestedShards.size(); ++i)
{
SearchShardBase* pShard = m_requestedShards[i];
const string& sResult = pShard->getResponse();
if (pShard->getStatus() != SearchReplicaBase::EC_OK)
{
stringstream ss;
ss << "Has error on shard: [" << pShard->getName()
<< "]: " << parseError(sResult);
FX_LOG(ERROR, ss.str().c_str());
setError(ss.str());
SEARCH_LATENCY_END(m_nPhaseTwoCollectLatency);
return;
}
FX_TRACE("Phase2 result: [%s]", sResult.c_str());
XMLResultParser parser;
QueryResultPtr& pTmpQRes = m_shardResults[pShard->getShardId()].second;
parser.parse(sResult, *(pTmpQRes));
if (pTmpQRes->getTimeCost() > nMaxTimeCost)
{
nMaxTimeCost = pTmpQRes->getTimeCost();
}
// merge trace information
QueryTracerPtr& pTracer = pTmpQRes->getTracer();
if (pTracer.isNotNull())
{
if (phaseTwoResult.getTracer().isNull())
{
phaseTwoResult.setTracer(new QueryTracer("proxy", pTracer->getLevel()));
}
string str;
NumberFormatter::append(str, pShard->getShardId());
phaseTwoResult.getTracer()->addChildTracer(pTracer)->prependPath(str);
}
}
// Merge hit docs
phaseTwoResult.setTotalHits(qResult.getTotalHits());
phaseTwoResult.setTimeCost(nMaxTimeCost + qResult.getTimeCost());
QueryResult::Iterator it = qResult.iterator();
while (it.hasNext())
{
const ResultDocPtr& pDoc = it.next();
shardid_t shardId = pDoc->getShardId();
FIRTEX_ASSERT2((size_t)shardId <= m_shards.size());
ResultPair& resPair = m_shardResults[shardId];
QueryResultPtr& pQResult2 = resPair.second;
if (pQResult2->hasError())
{
FX_LOG(ERROR, "Has error on shard: [%d], msg: [%s]",
pQResult2->getErrorMsg().c_str());
phaseTwoResult.setError(pQResult2->getErrorMsg());
break;
}
ResultDocPtr& pDoc2 = (*pQResult2)[resPair.first++];
pDoc2->setScore(pDoc->getScore());
phaseTwoResult.addDoc(pDoc2);
}
SEARCH_LATENCY_END(m_nPhaseTwoCollectLatency);
// Add query trace information
QueryTracerPtr& pResTracer = phaseTwoResult.getTracer();
if (pResTracer.isNotNull())
{
FX_QUERY_TRACE(DEBUG, pResTracer, "Phase one search latency: [%d] ms",
m_nPhaseOneLatency);
FX_QUERY_TRACE(DEBUG, pResTracer, "Phase one collection latency: [%d] ms",
m_nPhaseOneCollectLatency);
FX_QUERY_TRACE(DEBUG, pResTracer, "Phase two search latency: [%d] ms",
m_nPhaseTwoLatency);
FX_QUERY_TRACE(DEBUG, pResTracer, "Phase two collection latency: [%d] ms",
m_nPhaseTwoCollectLatency);
}
FX_DEBUG("Begin format result");
stringstream ss;
XMLResultFormatter formatter;
formatter.format(phaseTwoResult, ss);
m_sResult = ss.str();
FX_DEBUG("End format result");
}
void HTTPSearchService::handleQuery(const Statement& state,
EvHttpRequestContext* pCtx) const
{
IndexReaderPtr pIndexReader = m_searchRes.getIndexReader();
FIRTEX_ASSERT2(pIndexReader.isNotNull());
try
{
TimeProbe probe;
probe.start();
QueryParser parser(pIndexReader->getAnalyzerMapper(),
m_searchRes.getDefaultField());
IndexSearcher searcher(pIndexReader);
QueryHitsPtr pHits = searcher.search(state, parser);
QueryResult result;
if (pHits.isNotNull())
{
FieldSelectClausePtr pFieldClause = state.getFieldSelectClause();
QueryClausePtr pQueryClause = state.getQueryClause();
if (pFieldClause.isNotNull() && pQueryClause.isNotNull())
{
QueryPtr pQuery = parser.parse(pQueryClause->getQueryString());
FIRTEX_ASSERT2(pQuery.isNotNull());
FieldSelector selector(pIndexReader->getDocSchema());
for (size_t i = 0; i < pFieldClause->getFieldCount(); ++i)
{
const FieldSelectClause::SnippetParam& param = pFieldClause->getField(i);
FieldFilterPtr pFieldFilter;
if (param.snippet)
{
SnippetGenerator* pSnippetGen = new SnippetGenerator();
pFieldFilter.reset(pSnippetGen);
if (!pSnippetGen->init(pQuery, parser.getAnalyzerMapper(), param.field,
param.preTag, param.postTag, param.separator))
{
FX_LOG(ERROR, "Init snippet generator for field: [%s] FAILED", param.field.c_str());
sendErrorMessage("Init snippet generator for field: " +
param.field + " FAILED", pCtx);
return;
}
}
if (!selector.addField(param.field, pFieldFilter))
{
FX_LOG(ERROR, "Invalid field: [%s]", param.field.c_str());
}
}
result.init(selector, pIndexReader, *pHits);
}
else
{
result.init(pIndexReader, *pHits);
}
}
probe.stop();
result.setTimeCost(probe.elapsed() / 1000);
FX_QUERY_TRACE(INFO, result.getTracer(), "search phase time [%d]",
(int32_t)result.getTimeCost());
stringstream ss;
XMLResultFormatter formatter;
formatter.format(result, ss);
sendResponse(ss.str(), pCtx);
}
catch(const FirteXException& e)
{
FX_LOG(ERROR, "Handle request FAILED: [%s], reason: [%s]",
pCtx->getQuery().c_str(), e.what().c_str());
sendErrorMessage("Handle request failed", pCtx);
}
}
void XMLResultFormatter::format(const QueryResult& result,
std::stringstream& ss)
{
m_xmlDoc.clear();
m_xmlDoc.addDeclarationNode(result.getEncoding());
XMLNodeWrapperPtr pRootNode = m_xmlDoc.appendNode(
XMLDocumentWrapper::NODE_ELEMENT, "result");
if (result.hasError())
{
formatError(pRootNode, result.getErrorMsg());
}
else
{
XMLNodeWrapperPtr resultNode = pRootNode->appendNode(
XMLDocumentWrapper::NODE_ELEMENT, "hits");
string str;
NumberFormatter::append(str, (int32_t)result.size());
resultNode->appendAttribute("number_hits", str);
str.clear();
NumberFormatter::append(str, result.getTotalHits());
resultNode->appendAttribute("total_hits", str);
str.clear();
NumberFormatter::append(str, result.getTimeCost());
resultNode->appendAttribute("cost", str);
QueryResult::Iterator it = result.iterator();
while (it.hasNext())
{
XMLNodeWrapperPtr pHitNode = resultNode->appendNode(
XMLDocumentWrapper::NODE_ELEMENT, "hit");
const ResultDocPtr& pResDoc = it.next();
if (result.hasShardId())
{
str.clear();
NumberFormatter::append(str, pResDoc->getShardId());
pHitNode->appendNode(XMLDocumentWrapper::NODE_ELEMENT,
"shardid", str);
}
if (result.hasDocId())
{
str.clear();
NumberFormatter::append(str, pResDoc->getDocId());
pHitNode->appendNode(XMLDocumentWrapper::NODE_ELEMENT,
"docid", str);
}
if (result.hasScore())
{
str.clear();
NumberFormatter::append(str, pResDoc->getScore(), 2);
pHitNode->appendNode(XMLDocumentWrapper::NODE_ELEMENT,
"score", str);
}
if (result.hasFields())
{
XMLNodeWrapperPtr pFieldsNode = pHitNode->appendNode(
XMLDocumentWrapper::NODE_ELEMENT, "fields");
ResultDoc::Iterator fieldIt = pResDoc->iterator();
while (fieldIt.hasNext())
{
const ResultDoc::Field& field = fieldIt.next();
XMLNodeWrapperPtr pCDataNode = pFieldsNode->appendNode(
XMLDocumentWrapper::NODE_ELEMENT, field.first);
pCDataNode->appendNode(XMLDocumentWrapper::NODE_CDATA,
"", field.second);
}
}
} // end while
const QueryTracerPtr& pTracer = result.getTracer();
if (pTracer)
{
formatTracer(pRootNode, pTracer);
}
}
m_xmlDoc.print(ss);
}
