Github user benqiu2016 commented on a diff in the pull request:
https://github.com/apache/nifi-minifi-cpp/pull/74#discussion_r109758278
--- Diff: libminifi/src/provenance/ProvenanceTaskReport.cpp ---
@@ -0,0 +1,221 @@
+/**
+ * @file ProvenanceTaskReport.cpp
+ * ProvenanceTaskReport class implementation
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <vector>
+#include <queue>
+#include <map>
+#include <set>
+#include <sys/time.h>
+#include <time.h>
+#include <sstream>
+#include <string.h>
+#include <iostream>
+
+#include "provenance/ProvenanceTaskReport.h"
+#include "../include/io/StreamFactory.h"
+#include "io/ClientSocket.h"
+#include "utils/TimeUtil.h"
+#include "core/ProcessContext.h"
+#include "core/ProcessSession.h"
+#include "provenance/Provenance.h"
+#include "FlowController.h"
+
+#include "json/json.h"
+#include "json/writer.h"
+
+namespace org {
+namespace apache {
+namespace nifi {
+namespace minifi {
+namespace provenance{
+
+const std::string
ProvenanceTaskReport::ProcessorName("ProvenanceTaskReport");
+core::Property ProvenanceTaskReport::hostName("Host Name", "Remote Host
Name.", "localhost");
+core::Property ProvenanceTaskReport::port("Port", "Remote Port", "9999");
+core::Property ProvenanceTaskReport::batchSize("Batch Size", "Specifies
how many records to send in a single batch, at most.", "100");
+core::Relationship ProvenanceTaskReport::relation;
+
+void ProvenanceTaskReport::initialize()
+{
+ //! Set the supported properties
+ std::set<core::Property> properties;
+ properties.insert(hostName);
+ properties.insert(port);
+ properties.insert(batchSize);
+ setSupportedProperties(properties);
+ //! Set the supported relationships
+ std::set<core::Relationship> relationships;
+ relationships.insert(relation);
+ setSupportedRelationships(relationships);
+}
+
+std::unique_ptr<Site2SiteClientProtocol>
ProvenanceTaskReport::getNextProtocol()
+{
+ std::lock_guard<std::mutex> protocol_lock_(protocol_mutex_);
+ if (available_protocols_.empty())
+ return nullptr;
+ std::unique_ptr<Site2SiteClientProtocol> return_pointer =
std::move(available_protocols_.top());
+ available_protocols_.pop();
+ return std::move(return_pointer);
+}
+
+void ProvenanceTaskReport::returnProtocol(
+ std::unique_ptr<Site2SiteClientProtocol> return_protocol)
+{
+ std::lock_guard<std::mutex> protocol_lock_(protocol_mutex_);
+ available_protocols_.push(std::move(return_protocol));
+}
+
+void ProvenanceTaskReport::onTrigger(core::ProcessContext *context,
core::ProcessSession *session)
+{
+ std::string value;
+ int64_t lvalue;
+
+ std::unique_ptr<Site2SiteClientProtocol> protocol_ = getNextProtocol();
+
+ if (protocol_ == nullptr)
+ {
+ protocol_ = std::unique_ptr<Site2SiteClientProtocol>(
+ new Site2SiteClientProtocol(0));
+ protocol_->setPortId(protocol_uuid_);
+
+ std::string host = "";
+ uint16_t sport = 0;
+
+ if (context->getProperty(hostName.getName(), value)) {
+ host = value;
+ }
+ if (context->getProperty(port.getName(), value)
+ && core::Property::StringToInt(value, lvalue)) {
+ sport = (uint16_t) lvalue;
+ }
+ std::unique_ptr<org::apache::nifi::minifi::io::DataStream> str =
+ std::unique_ptr<org::apache::nifi::minifi::io::DataStream>(
+ org::apache::nifi::minifi::io::StreamFactory::getInstance()
+ ->createSocket(host, sport));
+
+ std::unique_ptr<Site2SitePeer> peer_ =
std::unique_ptr<Site2SitePeer>(
+ new Site2SitePeer(std::move(str), host, sport));
+
+ protocol_->setPeer(std::move(peer_));
+ }
+
+ if (!protocol_->bootstrap())
+ {
+ // bootstrap the client protocol if needeed
+ context->yield();
+ std::shared_ptr<Processor> processor =
std::static_pointer_cast<Processor>(
+ context->getProcessorNode().getProcessor());
+ logger_->log_error("Site2Site bootstrap failed yield period %d peer
",
+ processor->getYieldPeriodMsec());
+ return;
+ }
+
+ int batch = 100;
+
+ if (context->getProperty(batchSize.getName(), value) &&
core::Property::StringToInt(value, lvalue))
+ {
+ batch = (int) lvalue;
+ }
+
+ std::vector<std::shared_ptr<ProvenanceEventRecord>> records;
+ std::shared_ptr<ProvenanceRepository> repo =
std::static_pointer_cast<ProvenanceRepository>
(context->getProvenanceRepository());
+
+ repo->getProvenanceRecord(records, batch);
+
+ if (records.size() <= 0)
+ {
+ returnProtocol(std::move(protocol_));
+ return;
+ }
+
+ Json::Value array;
+ for (auto record : records)
+ {
+ Json::Value recordJson;
+ Json::Value updatedAttributesJson;
+ Json::Value parentUuidJson;
+ Json::Value childUuidJson;
+ recordJson["eventId"] = record->getEventId().c_str();
+ recordJson["eventType"] =
ProvenanceEventRecord::ProvenanceEventTypeStr[record->getEventType()];
+ recordJson["timestampMillis"] = record->getEventTime();
+ recordJson["durationMillis"] = record->getEventDuration();
+ recordJson["lineageStart"] = record->getlineageStartDate();
+ recordJson["details"] = record->getDetails().c_str();
+ recordJson["componentId"] = record->getComponentId().c_str();
+ recordJson["componentType"] =
record->getComponentType().c_str();
+ recordJson["entityId"] = record->getFlowFileUuid().c_str();
+ recordJson["entityType"] = "org.apache.nifi.flowfile.FlowFile";
+ recordJson["entitySize"] = record->getFileSize();
+ recordJson["entityOffset"] = record->getFileOffset();
+
+ for (auto attr : record->getAttributes())
+ {
+ updatedAttributesJson[attr.first] = attr.second;
+ }
+ recordJson["updatedAttributes"] = updatedAttributesJson;
+
+ for (auto parentUUID : record->getParentUuids())
+ {
+ parentUuidJson.append(parentUUID.c_str());
+ }
+ recordJson["parentIds"] = parentUuidJson;
+
+ for (auto childUUID : record->getChildrenUuids())
+ {
+ childUuidJson.append(childUUID.c_str());
+ }
+ recordJson["childIds"] = childUuidJson;
+ recordJson["transitUri"] = record->getTransitUri().c_str();
+ recordJson["remoteIdentifier"] =
record->getSourceSystemFlowFileIdentifier().c_str();
+ recordJson["alternateIdentifier"] =
record->getAlternateIdentifierUri().c_str();
+ recordJson["application"] = "MiNiFi Flow";
+ array.append(recordJson);
+ }
+
+ Json::StyledWriter writer;
+ std::string jsonStr = writer.write(array);
+ uint8_t *payload = (uint8_t *) jsonStr.c_str();
+ int length = jsonStr.length();
+
+ try
+ {
+ std::map<std::string, std::string> attributes;
+ protocol_->transferBytes(context, session, payload, length,
attributes);
+ }
+ catch (...)
+ {
+ // if transfer bytes failed, return instead of purge the
provenance records
+ returnProtocol(std::move(protocol_));
+ return;
+ }
+
+ // we transfer the record, purge the record from DB
+ repo->purgeProvenanceRecord(records);
+
+ returnProtocol(std::move(protocol_));
+
+ return;
--- End diff --
i want to return the same so that it can be reused in next trigger.
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