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/*
* 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.
*/
package org.apache.brooklyn.entity.nosql.couchdb;
import java.util.concurrent.TimeUnit;
import org.apache.brooklyn.core.entity.EntityFunctions;
import org.apache.brooklyn.entity.software.base.SoftwareProcessImpl;
import org.apache.brooklyn.entity.webapp.JavaWebAppSoftwareProcessImpl;
import org.apache.brooklyn.entity.webapp.WebAppServiceMethods;
import org.apache.brooklyn.feed.http.HttpFeed;
import org.apache.brooklyn.feed.http.HttpPollConfig;
import org.apache.brooklyn.feed.http.HttpValueFunctions;
import org.apache.brooklyn.util.core.flags.TypeCoercions;
import org.apache.brooklyn.util.guava.Functionals;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Functions;
/**
* Implementation of {@link CouchDBNode}.
*/
public class CouchDBNodeImpl extends SoftwareProcessImpl implements CouchDBNode {
private static final Logger log = LoggerFactory.getLogger(CouchDBNodeImpl.class);
public CouchDBNodeImpl() {
}
@Override
public Integer getHttpPort() { return getAttribute(CouchDBNode.HTTP_PORT); }
@Override
public Integer getHttpsPort() { return getAttribute(CouchDBNode.HTTPS_PORT); }
public String getClusterName() { return getAttribute(CouchDBNode.CLUSTER_NAME); }
@Override
public Class<CouchDBNodeDriver> getDriverInterface() {
return CouchDBNodeDriver.class;
}
private volatile HttpFeed httpFeed;
@Override
protected void connectSensors() {
super.connectSensors();
connectServiceUpIsRunning();
boolean retrieveUsageMetrics = getConfig(RETRIEVE_USAGE_METRICS);
httpFeed = HttpFeed.builder()
.entity(this)
.period(500, TimeUnit.MILLISECONDS)
.baseUri(String.format("http://%s:%d/_stats", getAttribute(HOSTNAME), getHttpPort()))
.poll(new HttpPollConfig<Integer>(REQUEST_COUNT)
.onSuccess(HttpValueFunctions.jsonContents(new String[] { "httpd", "requests", "sum" }, Integer.class))
.onFailureOrException(EntityFunctions.attribute(this, REQUEST_COUNT))
.enabled(retrieveUsageMetrics))
.poll(new HttpPollConfig<Integer>(ERROR_COUNT)
.onSuccess(HttpValueFunctions.jsonContents(new String[] { "httpd_status_codes", "404", "sum" }, Integer.class))
.onFailureOrException(Functions.constant(-1))
.enabled(retrieveUsageMetrics))
.poll(new HttpPollConfig<Integer>(TOTAL_PROCESSING_TIME)
.onSuccess(HttpValueFunctions.jsonContents(new String[] { "couchdb", "request_time", "sum" }, Integer.class))
.onFailureOrException(Functions.constant(-1))
.enabled(retrieveUsageMetrics))
.poll(new HttpPollConfig<Integer>(MAX_PROCESSING_TIME)
.onSuccess(Functionals.chain(HttpValueFunctions.jsonContents(new String[] { "couchdb", "request_time", "max" }, Double.class), TypeCoercions.function(Integer.class)))
.onFailureOrException(Functions.constant(-1))
.enabled(retrieveUsageMetrics))
.build();
WebAppServiceMethods.connectWebAppServerPolicies(this);
}
@Override
public void disconnectSensors() {
super.disconnectSensors();
if (httpFeed != null) httpFeed.stop();
disconnectServiceUpIsRunning();
}
/** @see JavaWebAppSoftwareProcessImpl#postStop() */
@Override
protected void postStop() {
super.postStop();
// zero our workrate derived workrates.
sensors().set(REQUESTS_PER_SECOND_LAST, 0D);
sensors().set(REQUESTS_PER_SECOND_IN_WINDOW, 0D);
}
}