List of usage examples for org.apache.solr.common.params CommonParams START_DEFAULT
int START_DEFAULT
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From source file:org.apache.nifi.processors.solr.QuerySolr.java
License:Apache License
@Override public void doOnTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException { final ComponentLog logger = getLogger(); FlowFile flowFileOriginal = session.get(); FlowFile flowFileResponse;//from w ww .j a v a 2s. c o m if (flowFileOriginal == null) { if (context.hasNonLoopConnection()) { return; } flowFileResponse = session.create(); } else { flowFileResponse = session.create(flowFileOriginal); } final SolrQuery solrQuery = new SolrQuery(); final boolean isSolrCloud = SOLR_TYPE_CLOUD.equals(context.getProperty(SOLR_TYPE).getValue()); final String collection = context.getProperty(COLLECTION).evaluateAttributeExpressions(flowFileResponse) .getValue(); final StringBuilder transitUri = new StringBuilder("solr://"); transitUri.append(getSolrLocation()); if (isSolrCloud) { transitUri.append(":").append(collection); } final StopWatch timer = new StopWatch(false); try { solrQuery.setQuery(context.getProperty(SOLR_PARAM_QUERY).evaluateAttributeExpressions(flowFileResponse) .getValue()); solrQuery.setRequestHandler(context.getProperty(SOLR_PARAM_REQUEST_HANDLER) .evaluateAttributeExpressions(flowFileResponse).getValue()); if (context.getProperty(SOLR_PARAM_FIELD_LIST).isSet()) { for (final String field : context.getProperty(SOLR_PARAM_FIELD_LIST) .evaluateAttributeExpressions(flowFileResponse).getValue().split(",")) { solrQuery.addField(field.trim()); } } // Avoid ArrayIndexOutOfBoundsException due to incorrectly configured sorting try { if (context.getProperty(SOLR_PARAM_SORT).isSet()) { final List<SolrQuery.SortClause> sortings = new ArrayList<>(); for (final String sorting : context.getProperty(SOLR_PARAM_SORT) .evaluateAttributeExpressions(flowFileResponse).getValue().split(",")) { final String[] sortEntry = sorting.trim().split(" "); sortings.add(new SolrQuery.SortClause(sortEntry[0], sortEntry[1])); } solrQuery.setSorts(sortings); } } catch (Exception e) { throw new ProcessException("Error while parsing the sort clauses for the Solr query"); } final Integer startParam = context.getProperty(SOLR_PARAM_START).isSet() ? Integer.parseInt(context.getProperty(SOLR_PARAM_START) .evaluateAttributeExpressions(flowFileResponse).getValue()) : CommonParams.START_DEFAULT; solrQuery.setStart(startParam); final Integer rowParam = context.getProperty(SOLR_PARAM_ROWS).isSet() ? Integer.parseInt(context.getProperty(SOLR_PARAM_ROWS) .evaluateAttributeExpressions(flowFileResponse).getValue()) : CommonParams.ROWS_DEFAULT; solrQuery.setRows(rowParam); final Map<String, String[]> additionalSolrParams = SolrUtils.getRequestParams(context, flowFileResponse); final Set<String> searchComponents = extractSearchComponents(additionalSolrParams); solrQuery.add(new MultiMapSolrParams(additionalSolrParams)); final Map<String, String> attributes = new HashMap<>(); attributes.put(ATTRIBUTE_SOLR_CONNECT, getSolrLocation()); if (isSolrCloud) { attributes.put(ATTRIBUTE_SOLR_COLLECTION, collection); } attributes.put(ATTRIBUTE_SOLR_QUERY, solrQuery.toString()); if (flowFileOriginal != null) { flowFileOriginal = session.putAllAttributes(flowFileOriginal, attributes); } flowFileResponse = session.putAllAttributes(flowFileResponse, attributes); final boolean getEntireResults = RETURN_ALL_RESULTS .equals(context.getProperty(AMOUNT_DOCUMENTS_TO_RETURN).getValue()); boolean processFacetsAndStats = true; boolean continuePaging = true; while (continuePaging) { timer.start(); Map<String, String> responseAttributes = new HashMap<>(); responseAttributes.put(ATTRIBUTE_SOLR_START, solrQuery.getStart().toString()); responseAttributes.put(ATTRIBUTE_SOLR_ROWS, solrQuery.getRows().toString()); if (solrQuery.getStart() > UPPER_LIMIT_START_PARAM) { logger.warn( "The start parameter of Solr query {} exceeded the upper limit of {}. The query will not be processed " + "to avoid performance or memory issues on the part of Solr.", new Object[] { solrQuery.toString(), UPPER_LIMIT_START_PARAM }); flowFileResponse = session.putAllAttributes(flowFileResponse, responseAttributes); timer.stop(); break; } final QueryRequest req = new QueryRequest(solrQuery); if (isBasicAuthEnabled()) { req.setBasicAuthCredentials(getUsername(), getPassword()); } final QueryResponse response = req.process(getSolrClient()); timer.stop(); final Long totalNumberOfResults = response.getResults().getNumFound(); responseAttributes.put(ATTRIBUTE_SOLR_NUMBER_RESULTS, totalNumberOfResults.toString()); responseAttributes.put(ATTRIBUTE_CURSOR_MARK, response.getNextCursorMark()); responseAttributes.put(ATTRIBUTE_SOLR_STATUS, String.valueOf(response.getStatus())); responseAttributes.put(ATTRIBUTE_QUERY_TIME, String.valueOf(response.getQTime())); flowFileResponse = session.putAllAttributes(flowFileResponse, responseAttributes); if (response.getResults().size() > 0) { if (context.getProperty(RETURN_TYPE).getValue().equals(MODE_XML.getValue())) { flowFileResponse = session.write(flowFileResponse, SolrUtils.getOutputStreamCallbackToTransformSolrResponseToXml(response)); flowFileResponse = session.putAttribute(flowFileResponse, CoreAttributes.MIME_TYPE.key(), MIME_TYPE_XML); } else { final RecordSetWriterFactory writerFactory = context.getProperty(RECORD_WRITER) .evaluateAttributeExpressions(flowFileResponse) .asControllerService(RecordSetWriterFactory.class); final RecordSchema schema = writerFactory.getSchema(flowFileResponse.getAttributes(), null); final RecordSet recordSet = SolrUtils.solrDocumentsToRecordSet(response.getResults(), schema); final StringBuffer mimeType = new StringBuffer(); final FlowFile flowFileResponseRef = flowFileResponse; flowFileResponse = session.write(flowFileResponse, out -> { try (final RecordSetWriter writer = writerFactory.createWriter(getLogger(), schema, out, flowFileResponseRef)) { writer.write(recordSet); writer.flush(); mimeType.append(writer.getMimeType()); } catch (SchemaNotFoundException e) { throw new ProcessException("Could not parse Solr response", e); } }); flowFileResponse = session.putAttribute(flowFileResponse, CoreAttributes.MIME_TYPE.key(), mimeType.toString()); } if (processFacetsAndStats) { if (searchComponents.contains(FacetParams.FACET)) { FlowFile flowFileFacets = session.create(flowFileResponse); flowFileFacets = session.write(flowFileFacets, out -> { try (final OutputStreamWriter osw = new OutputStreamWriter(out); final JsonWriter writer = new JsonWriter(osw)) { addFacetsFromSolrResponseToJsonWriter(response, writer); } }); flowFileFacets = session.putAttribute(flowFileFacets, CoreAttributes.MIME_TYPE.key(), MIME_TYPE_JSON); session.getProvenanceReporter().receive(flowFileFacets, transitUri.toString(), timer.getDuration(TimeUnit.MILLISECONDS)); session.transfer(flowFileFacets, FACETS); } if (searchComponents.contains(StatsParams.STATS)) { FlowFile flowFileStats = session.create(flowFileResponse); flowFileStats = session.write(flowFileStats, out -> { try (final OutputStreamWriter osw = new OutputStreamWriter(out); final JsonWriter writer = new JsonWriter(osw)) { addStatsFromSolrResponseToJsonWriter(response, writer); } }); flowFileStats = session.putAttribute(flowFileStats, CoreAttributes.MIME_TYPE.key(), MIME_TYPE_JSON); session.getProvenanceReporter().receive(flowFileStats, transitUri.toString(), timer.getDuration(TimeUnit.MILLISECONDS)); session.transfer(flowFileStats, STATS); } processFacetsAndStats = false; } } if (getEntireResults) { final Integer totalDocumentsReturned = solrQuery.getStart() + solrQuery.getRows(); if (totalDocumentsReturned < totalNumberOfResults) { solrQuery.setStart(totalDocumentsReturned); session.getProvenanceReporter().receive(flowFileResponse, transitUri.toString(), timer.getDuration(TimeUnit.MILLISECONDS)); session.transfer(flowFileResponse, RESULTS); flowFileResponse = session.create(flowFileResponse); } else { continuePaging = false; } } else { continuePaging = false; } } } catch (Exception e) { flowFileResponse = session.penalize(flowFileResponse); flowFileResponse = session.putAttribute(flowFileResponse, EXCEPTION, e.getClass().getName()); flowFileResponse = session.putAttribute(flowFileResponse, EXCEPTION_MESSAGE, e.getMessage()); session.transfer(flowFileResponse, FAILURE); logger.error("Failed to execute query {} due to {}. FlowFile will be routed to relationship failure", new Object[] { solrQuery.toString(), e }, e); if (flowFileOriginal != null) { flowFileOriginal = session.penalize(flowFileOriginal); } } if (!flowFileResponse.isPenalized()) { session.getProvenanceReporter().receive(flowFileResponse, transitUri.toString(), timer.getDuration(TimeUnit.MILLISECONDS)); session.transfer(flowFileResponse, RESULTS); } if (flowFileOriginal != null) { if (!flowFileOriginal.isPenalized()) { session.transfer(flowFileOriginal, ORIGINAL); } else { session.remove(flowFileOriginal); } } }