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The official Couchbase JVM Core IO Library
/**
* Copyright (c) 2015 Couchbase, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALING
* IN THE SOFTWARE.
*/
package com.couchbase.client.core.service;
import com.couchbase.client.core.CouchbaseException;
import com.couchbase.client.core.ResponseEvent;
import com.couchbase.client.core.endpoint.Endpoint;
import com.couchbase.client.core.env.CoreEnvironment;
import com.couchbase.client.core.message.CouchbaseRequest;
import com.couchbase.client.core.message.internal.SignalFlush;
import com.couchbase.client.core.state.LifecycleState;
import com.couchbase.client.deps.com.lmax.disruptor.RingBuffer;
import rx.Subscriber;
import rx.functions.Action1;
/**
* Abstract implementation of a service which enables and disables endpoints on demand.
*
* @author Michael Nitschinger
* @since 1.1.0
*/
public abstract class AbstractOnDemandService extends AbstractDynamicService {
protected AbstractOnDemandService(String hostname, String bucket, String password, int port, CoreEnvironment env,
RingBuffer responseBuffer, EndpointFactory endpointFactory) {
super(hostname, bucket, password, port, env, 0, responseBuffer, endpointFactory);
}
@Override
protected void dispatch(final CouchbaseRequest request) {
final Endpoint endpoint = createEndpoint();
endpointStates().register(endpoint, endpoint);
endpoint
.connect()
.subscribe(new Subscriber() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
request.observable().onError(e);
}
@Override
public void onNext(LifecycleState lifecycleState) {
if (lifecycleState == LifecycleState.DISCONNECTED) {
request.observable().onError(new CouchbaseException("Could not connect endpoint."));
}
}
});
whenState(endpoint, LifecycleState.CONNECTED, new Action1() {
@Override
public void call(LifecycleState lifecycleState) {
endpoint.send(request);
endpoint.send(SignalFlush.INSTANCE);
}
});
whenState(endpoint, LifecycleState.DISCONNECTED, new Action1() {
@Override
public void call(LifecycleState lifecycleState) {
endpointStates().deregister(endpoint);
}
});
}
}