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The official Couchbase JVM Core IO Library
/*
* Copyright (c) 2016 Couchbase, Inc.
*
* 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.
*/
package com.couchbase.client.core.config;
import com.couchbase.client.core.annotation.Stability;
import com.couchbase.client.core.service.ServiceType;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicReference;
/**
* The {@link ClusterConfig} holds bucket and global configurations in a central place.
*/
public class ClusterConfig {
/**
* Holds all current bucket configurations.
*/
private final Map bucketConfigs;
/**
* Holds a global configuration if present.
*/
private final AtomicReference globalConfig;
/**
* Creates a new {@link ClusterConfig}.
*/
public ClusterConfig() {
bucketConfigs = new ConcurrentHashMap<>();
globalConfig = new AtomicReference<>();
}
public BucketConfig bucketConfig(final String bucketName) {
return bucketConfigs.get(bucketName);
}
@Stability.Internal
public void setBucketConfig(final BucketConfig config) {
bucketConfigs.put(config.name(), config);
}
@Stability.Internal
public void deleteBucketConfig(String bucketName) {
bucketConfigs.remove(bucketName);
}
public Map bucketConfigs() {
return bucketConfigs;
}
public GlobalConfig globalConfig() {
return globalConfig.get();
}
@Stability.Internal
public void setGlobalConfig(final GlobalConfig config) {
globalConfig.set(config);
}
@Stability.Internal
public void deleteGlobalConfig() {
globalConfig.set(null);
}
public boolean hasClusterOrBucketConfig() {
return !bucketConfigs.isEmpty() || globalConfig() != null;
}
/**
* Dynamically aggregates all node addresses from global and bucket configs into a set (no duplicates).
*
* @return all node addresses found in global and bucket configs without duplicates.
*/
public Set allNodeAddresses() {
Set nodes = new HashSet<>();
GlobalConfig gc = globalConfig.get();
if (gc != null) {
for (PortInfo ni : gc.portInfos()) {
nodes.add(ni.hostname());
}
}
for (BucketConfig bc : bucketConfigs().values()) {
for (NodeInfo ni : bc.nodes()) {
nodes.add(ni.hostname());
}
}
return nodes;
}
@Override
public String toString() {
return "ClusterConfig{" +
"bucketConfigs=" + bucketConfigs +
", globalConfig=" + globalConfig +
'}';
}
/**
* Returns the current cluster capabilities.
*
* Right now this needs at least one bucket open, and it grabs the capabilities from the first bucket
* config available. If needed, in the future this can be made more intelligent (caching?).
*/
public Map> clusterCapabilities() {
for (BucketConfig bc : bucketConfigs().values()) {
return bc.clusterCapabilities();
}
return Collections.emptyMap();
}
}