diff options
Diffstat (limited to 'policy-endpoints/src/main/java/org/openecomp/policy/drools/event/comm/bus/internal/InlineBusTopicSink.java')
| -rw-r--r-- | policy-endpoints/src/main/java/org/openecomp/policy/drools/event/comm/bus/internal/InlineBusTopicSink.java | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/policy-endpoints/src/main/java/org/openecomp/policy/drools/event/comm/bus/internal/InlineBusTopicSink.java b/policy-endpoints/src/main/java/org/openecomp/policy/drools/event/comm/bus/internal/InlineBusTopicSink.java new file mode 100644 index 00000000..bd88818b --- /dev/null +++ b/policy-endpoints/src/main/java/org/openecomp/policy/drools/event/comm/bus/internal/InlineBusTopicSink.java @@ -0,0 +1,284 @@ +/*- + * ============LICENSE_START======================================================= + * policy-endpoints + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed 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. + * ============LICENSE_END========================================================= + */ + +package org.openecomp.policy.drools.event.comm.bus.internal; + +import java.util.List; +import java.util.UUID; + +import org.apache.log4j.Logger; + +import org.openecomp.policy.drools.event.comm.bus.BusTopicSink; +import org.openecomp.policy.common.logging.flexlogger.FlexLogger; +import org.openecomp.policy.common.logging.eelf.MessageCodes; + +/** + * Transport Agnostic Bus Topic Sink to carry out the core functionality + * to interact with a sink regardless if it is UEB or DMaaP. + * + */ +public abstract class InlineBusTopicSink extends BusTopicBase implements BusTopicSink { + + /** + * logger + */ + private static org.openecomp.policy.common.logging.flexlogger.Logger logger = + FlexLogger.getLogger(InlineBusTopicSink.class); + + /** + * Not to be converted to PolicyLogger. + * This will contain all in/out traffic and only that in a single file in a concise format. + */ + protected static final Logger networkLogger = Logger.getLogger(NETWORK_LOGGER); + + /** + * The partition key to publish to + */ + protected String partitionId; + + /** + * Am I running? + * reflects invocation of start()/stop() + * !locked & start() => alive + * stop() => !alive + */ + protected volatile boolean alive = false; + + /** + * Am I locked? + * reflects invocation of lock()/unlock() operations + * locked => !alive (but not in the other direction necessarily) + * locked => !offer, !run, !start, !stop (but this last one is obvious + * since locked => !alive) + */ + protected volatile boolean locked = false; + + /** + * message bus publisher + */ + protected BusPublisher publisher; + + /** + * constructor for abstract sink + * + * @param servers servers + * @param topic topic + * @param apiKey api secret + * @param apiSecret api secret + * @param partitionId partition id + * @throws IllegalArgumentException in invalid parameters are passed in + */ + public InlineBusTopicSink(List<String> servers, String topic, + String apiKey, String apiSecret, String partitionId) + throws IllegalArgumentException { + + super(servers, topic, apiKey, apiSecret); + + if (partitionId == null || partitionId.isEmpty()) { + this.partitionId = UUID.randomUUID ().toString(); + } + } + + /** + * Initialize the Bus publisher + */ + public abstract void init(); + + /** + * {@inheritDoc} + */ + @Override + public boolean start() throws IllegalStateException { + + if (logger.isInfoEnabled()) + logger.info("START: " + this); + + synchronized(this) { + + if (this.alive) + return true; + + if (locked) + throw new IllegalStateException(this + " is locked."); + + this.alive = true; + } + + this.init(); + return true; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean stop() { + + BusPublisher publisherCopy; + synchronized(this) { + this.alive = false; + publisherCopy = this.publisher; + this.publisher = null; + } + + if (publisherCopy != null) { + try { + publisherCopy.close(); + } catch (Exception e) { + logger.warn(MessageCodes.EXCEPTION_ERROR, e, "PUBLISHER.CLOSE", this.toString()); + e.printStackTrace(); + } + } else { + logger.warn("No publisher to close: " + this); + return false; + } + + return true; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean lock() { + + if (logger.isInfoEnabled()) + logger.info("LOCK: " + this); + + synchronized (this) { + if (this.locked) + return true; + + this.locked = true; + } + + return this.stop(); + } + + /** + * {@inheritDoc} + */ + @Override + public boolean unlock() { + + if (logger.isInfoEnabled()) + logger.info("UNLOCK: " + this); + + synchronized(this) { + if (!this.locked) + return true; + + this.locked = false; + } + + try { + return this.start(); + } catch (Exception e) { + logger.warn("can't start after unlocking " + this + + " because of " + e.getMessage()); + e.printStackTrace(); + return false; + } + } + + /** + * {@inheritDoc} + */ + @Override + public boolean isLocked() { + return this.locked; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean isAlive() { + return this.alive; + } + + /** + * {@inheritDoc} + */ + @Override + public boolean send(String message) throws IllegalArgumentException, IllegalStateException { + + if (message == null || message.isEmpty()) { + throw new IllegalArgumentException("Message to send is empty"); + } + + if (!this.alive) { + throw new IllegalStateException(this + " is stopped"); + } + + try { + synchronized (this) { + this.recentEvents.add(message); + } + + if (networkLogger.isInfoEnabled()) { + networkLogger.info("[OUT|" + this.getTopicCommInfrastructure() + "|" + + this.topic + "]:" + + message); + } + + publisher.send(this.partitionId, message); + } catch (Exception e) { + logger.error("can't start after unlocking " + this + + " because of " + e.getMessage()); + e.printStackTrace(); + return false; + } + + return true; + } + + + /** + * {@inheritDoc} + */ + @Override + public void setPartitionKey(String partitionKey) { + this.partitionId = partitionKey; + } + + /** + * {@inheritDoc} + */ + @Override + public String getPartitionKey() { + return this.partitionId; + } + + /** + * {@inheritDoc} + */ + @Override + public void shutdown() throws IllegalStateException { + this.stop(); + } + + /** + * {@inheritDoc} + */ + @Override + public abstract CommInfrastructure getTopicCommInfrastructure(); + +} |