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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2020 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.sdc.be.catalog.impl;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.openecomp.sdc.be.config.BeEcompErrorManager;
import org.openecomp.sdc.be.config.ConfigurationManager;
import org.openecomp.sdc.be.config.DmaapProducerConfiguration;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.api.HealthCheckInfo;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.springframework.stereotype.Component;
@Component("dmaapProducerHealth")
public class DmaapProducerHealth {
private static final String DMAAP_HEALTH_LOG_CONTEXT = "dmaapProducer.healthcheck";
private static final String DMAAP_HEALTH_CHECK_STR = "dmaapProducerHealthCheck";
private static final Logger log = Logger.getLogger(DmaapProducerHealth.class.getName());
private static final Logger logHealth = Logger.getLogger(DMAAP_HEALTH_LOG_CONTEXT);
private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
private HealthCheckInfo healthCheckInfo = DmaapProducerHealth.HealthCheckInfoResult.UNAVAILABLE.getHealthCheckInfo();
private long healthCheckReadTimeout = 20;
private long reconnectInterval = 5;
private HealthCheckScheduledTask healthCheckScheduledTask = null;
private ScheduledFuture<?> scheduledFuture = null;
private DmaapProducerConfiguration configuration = null;
private volatile AtomicBoolean lastHealthState = new AtomicBoolean(false);
private volatile AtomicBoolean reportedHealthState = null;
@PostConstruct
public DmaapProducerHealth init() {
log.trace("Enter init method of DmaapProducer health");
synchronized (DmaapProducerHealth.class) {
this.configuration = ConfigurationManager.getConfigurationManager().getConfiguration().getDmaapProducerConfiguration();
Integer pollingInterval = configuration.getPollingInterval();
if (pollingInterval != null && pollingInterval != 0) {
reconnectInterval = pollingInterval;
}
Integer healthCheckReadTimeoutConfig = configuration.getTimeoutMs();
if (healthCheckReadTimeoutConfig != null) {
this.healthCheckReadTimeout = healthCheckReadTimeoutConfig;
}
this.healthCheckScheduledTask = new HealthCheckScheduledTask(configuration); //what is the representation? csv? delimiter? json or other
startHealthCheckTask(true);
}
log.trace("Exit init method of DistributionEngineClusterHealth");
return this;
}
@PreDestroy
protected void destroy() {
if (scheduledFuture != null) {
scheduledFuture.cancel(true);
scheduledFuture = null;
}
if (scheduler != null) {
scheduler.shutdown();
}
}
/**
* Start health check task.
*
* @param startTask
*/
private void startHealthCheckTask(boolean startTask) {
synchronized (DmaapProducerHealth.class) {
if (startTask && this.scheduledFuture == null) {
this.scheduledFuture = this.scheduler.scheduleAtFixedRate(this.healthCheckScheduledTask, 0, reconnectInterval, TimeUnit.SECONDS);
}
}
}
void report(Boolean isUp) {
if (reportedHealthState == null) {
reportedHealthState = new AtomicBoolean(isUp);
}
reportedHealthState.set(isUp);
}
public HealthCheckInfo getHealthCheckInfo() {
return healthCheckInfo;
}
public enum HealthCheckInfoResult {
// @formatter:off
OK(new HealthCheckInfo(Constants.HC_COMPONENT_DMAAP_PRODUCER, HealthCheckInfo.HealthCheckStatus.UP, null, DmaapStatusDescription.OK.getDescription())),
UNAVAILABLE(new HealthCheckInfo(Constants.HC_COMPONENT_DMAAP_PRODUCER, HealthCheckInfo.HealthCheckStatus.DOWN, null, DmaapStatusDescription.UNAVAILABLE.getDescription())),
DOWN(new HealthCheckInfo(Constants.HC_COMPONENT_DMAAP_PRODUCER, HealthCheckInfo.HealthCheckStatus.DOWN, null, DmaapStatusDescription.DOWN.getDescription()));
// @formatter:on
private HealthCheckInfo healthCheckInfo;
HealthCheckInfoResult(HealthCheckInfo healthCheckInfo) {
this.healthCheckInfo = healthCheckInfo;
}
public HealthCheckInfo getHealthCheckInfo() {
return healthCheckInfo;
}
}
public enum DmaapStatusDescription {
// @formatter:off
OK("OK"),
UNAVAILABLE("DmaapProducer is not available"),
DOWN("DOWN"),
NOT_CONFIGURED("DmaapProducer configuration is missing/wrong ");
// @formatter:on
private String desc;
DmaapStatusDescription(String desc) {
this.desc = desc;
}
public String getDescription() {
return desc;
}
}
/**
* Health Check Task Scheduler - infinite check.
*/
public class HealthCheckScheduledTask implements Runnable {
private static final int TIMEOUT = 8192;
private final DmaapProducerConfiguration config;
HealthCheckScheduledTask(final DmaapProducerConfiguration config) {
this.config = config;
}
@Override
public void run() {
logHealth.trace("Executing Dmaap Health Check Task - Start");
boolean prevIsReachable;
boolean reachable;
//first try simple ping
try {
if (reportedHealthState != null) {
reachable = reportedHealthState.get();
} else {
reachable = false;
}
prevIsReachable = lastHealthState.getAndSet(reachable);
healthCheckInfo = reachable ? HealthCheckInfoResult.OK.healthCheckInfo : HealthCheckInfoResult.DOWN.healthCheckInfo;
} catch (Exception e) {
log.debug("{} - cannot check connectivity -> {}", DMAAP_HEALTH_CHECK_STR, e);
prevIsReachable = lastHealthState.getAndSet(false);
healthCheckInfo = HealthCheckInfoResult.UNAVAILABLE.healthCheckInfo;
}
if (prevIsReachable != lastHealthState.get()) {
logAlarm(lastHealthState.get());
}
}
private void logAlarm(boolean lastHealthState) {
try {
if (lastHealthState) {
BeEcompErrorManager.getInstance().logDmaapHealthCheckRecovery(DMAAP_HEALTH_CHECK_STR);
} else {
BeEcompErrorManager.getInstance().logDmaapHealthCheckError(DMAAP_HEALTH_CHECK_STR);
}
} catch (Exception e) {
log.debug("cannot logAlarm -> {}", e);
}
}
}
}
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