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Brooklyn entities for NoSQL data store software entities
/*
* 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.mongodb;
import java.net.UnknownHostException;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
import org.apache.brooklyn.api.sensor.SensorEvent;
import org.apache.brooklyn.api.sensor.SensorEventListener;
import org.apache.brooklyn.core.config.render.RendererHints;
import org.apache.brooklyn.core.location.access.BrooklynAccessUtils;
import org.apache.brooklyn.entity.software.base.SoftwareProcessImpl;
import org.apache.brooklyn.feed.function.FunctionFeed;
import org.apache.brooklyn.feed.function.FunctionPollConfig;
import org.bson.BasicBSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.base.Functions;
import com.google.common.base.MoreObjects;
import com.google.common.net.HostAndPort;
public class MongoDBServerImpl extends SoftwareProcessImpl implements MongoDBServer {
private static final Logger LOG = LoggerFactory.getLogger(MongoDBServerImpl.class);
static {
RendererHints.register(HTTP_INTERFACE_URL, RendererHints.namedActionWithUrl());
}
private FunctionFeed serviceStats;
private FunctionFeed replicaSetStats;
private MongoDBClientSupport client;
public MongoDBServerImpl() {
}
@Override
public Class getDriverInterface() {
return MongoDBDriver.class;
}
@Override
protected void connectSensors() {
super.connectSensors();
connectServiceUpIsRunning();
int port = sensors().get(MongoDBServer.PORT);
HostAndPort accessibleAddress = BrooklynAccessUtils.getBrooklynAccessibleAddress(this, port);
sensors().set(MONGO_SERVER_ENDPOINT, String.format("%s:%d",
accessibleAddress.getHostText(), accessibleAddress.getPort()));
int httpConsolePort = BrooklynAccessUtils.getBrooklynAccessibleAddress(this, sensors().get(HTTP_PORT)).getPort();
sensors().set(HTTP_INTERFACE_URL, String.format("http://%s:%d",
accessibleAddress.getHostText(), httpConsolePort));
if (clientAccessEnabled()) {
try {
client = MongoDBClientSupport.forServer(this);
} catch (UnknownHostException e) {
LOG.warn("Unable to create client connection to {}, not connecting sensors: {} ", this, e.getMessage());
return;
}
serviceStats = FunctionFeed.builder()
.entity(this)
.poll(new FunctionPollConfig(STATUS_BSON)
.period(2, TimeUnit.SECONDS)
.callable(new Callable() {
@Override
public BasicBSONObject call() throws Exception {
return MongoDBServerImpl.this.sensors().get(SERVICE_UP)
? client.getServerStatus()
: null;
}
})
.onException(Functions.constant(null)))
.build();
if (isReplicaSetMember()) {
replicaSetStats = FunctionFeed.builder()
.entity(this)
.poll(new FunctionPollConfig(REPLICA_SET_MEMBER_STATUS)
.period(2, TimeUnit.SECONDS)
.callable(new Callable() {
/**
* Calls {@link MongoDBClientSupport#getReplicaSetStatus} and
* extracts myState from the response.
* @return
* The appropriate {@link org.apache.brooklyn.entity.nosql.mongodb.ReplicaSetMemberStatus}
* if myState was non-null, {@link ReplicaSetMemberStatus#UNKNOWN} otherwise.
*/
@Override
public ReplicaSetMemberStatus call() {
BasicBSONObject serverStatus = client.getReplicaSetStatus();
int state = serverStatus.getInt("myState", -1);
return ReplicaSetMemberStatus.fromCode(state);
}
})
.onException(Functions.constant(ReplicaSetMemberStatus.UNKNOWN))
.suppressDuplicates(true))
.build();
} else {
sensors().set(IS_PRIMARY_FOR_REPLICA_SET, false);
sensors().set(IS_SECONDARY_FOR_REPLICA_SET, false);
}
} else {
LOG.info("Not monitoring "+this+" to retrieve state via client API");
}
// Take interesting details from STATUS.
subscriptions().subscribe(this, STATUS_BSON, new SensorEventListener() {
@Override public void onEvent(SensorEvent event) {
BasicBSONObject map = event.getValue();
if (map != null && !map.isEmpty()) {
sensors().set(UPTIME_SECONDS, map.getDouble("uptime", 0));
// Operations
BasicBSONObject opcounters = (BasicBSONObject) map.get("opcounters");
sensors().set(OPCOUNTERS_INSERTS, opcounters.getLong("insert", 0));
sensors().set(OPCOUNTERS_QUERIES, opcounters.getLong("query", 0));
sensors().set(OPCOUNTERS_UPDATES, opcounters.getLong("update", 0));
sensors().set(OPCOUNTERS_DELETES, opcounters.getLong("delete", 0));
sensors().set(OPCOUNTERS_GETMORE, opcounters.getLong("getmore", 0));
sensors().set(OPCOUNTERS_COMMAND, opcounters.getLong("command", 0));
// Network stats
BasicBSONObject network = (BasicBSONObject) map.get("network");
sensors().set(NETWORK_BYTES_IN, network.getLong("bytesIn", 0));
sensors().set(NETWORK_BYTES_OUT, network.getLong("bytesOut", 0));
sensors().set(NETWORK_NUM_REQUESTS, network.getLong("numRequests", 0));
// Replica set stats
BasicBSONObject repl = (BasicBSONObject) map.get("repl");
if (isReplicaSetMember() && repl != null) {
sensors().set(IS_PRIMARY_FOR_REPLICA_SET, repl.getBoolean("ismaster"));
sensors().set(IS_SECONDARY_FOR_REPLICA_SET, repl.getBoolean("secondary"));
sensors().set(REPLICA_SET_PRIMARY_ENDPOINT, repl.getString("primary"));
}
}
}
});
}
@Override
protected void disconnectSensors() {
super.disconnectSensors();
disconnectServiceUpIsRunning();
if (serviceStats != null) serviceStats.stop();
if (replicaSetStats != null) replicaSetStats.stop();
}
protected boolean clientAccessEnabled() {
return Boolean.TRUE.equals(config().get(MongoDBServer.USE_CLIENT_MONITORING));
}
@Override
public MongoDBReplicaSet getReplicaSet() {
return config().get(MongoDBServer.REPLICA_SET);
}
@Override
public boolean isReplicaSetMember() {
return getReplicaSet() != null;
}
@Override
public boolean initializeReplicaSet(String replicaSetName, Integer id) {
return client.initializeReplicaSet(replicaSetName, id);
}
@Override
public boolean addMemberToReplicaSet(MongoDBServer secondary, Integer id) {
// TODO The attributes IS_PRIMARY_FOR_REPLICA_SET and REPLICA_SET_MEMBER_STATUS can be out-of-sync.
// The former is obtained by an enricher that listens to STATUS_BSON (set by client.getServerStatus()).
// The latter is set by a different feed doing client.getReplicaSetStatus().getInt("myState").
// The ReplicaSet uses REPLICA_SET_MEMBER_STATUS to determine which node to call.
//
// Relying on caller to respect the `false` result, to retry.
if (!sensors().get(IS_PRIMARY_FOR_REPLICA_SET)) {
LOG.warn("Attempted to add {} to replica set at server that is not primary: {}", secondary, this);
return false;
}
if (!clientAccessEnabled()) {
throw new IllegalStateException("client-access disabled for "+this+"; cannot add to replica set member "+secondary+" -> "+id);
}
return client.addMemberToReplicaSet(secondary, id);
}
@Override
public boolean removeMemberFromReplicaSet(MongoDBServer server) {
if (!sensors().get(IS_PRIMARY_FOR_REPLICA_SET)) {
LOG.warn("Attempted to remove {} from replica set at server that is not primary: {}", server, this);
return false;
}
if (!clientAccessEnabled()) {
throw new IllegalStateException("client-access disabled for "+this+"; cannot remove from replica set member "+server);
}
return client.removeMemberFromReplicaSet(server);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("id", getId())
.add("hostname", sensors().get(HOSTNAME))
.add("port", sensors().get(PORT))
.toString();
}
}