HttpChannelProviderFactory.java

/*
 * Copyright 2016 Netflix, 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 io.reactivex.netty.protocol.http.client.internal;

import io.reactivex.netty.client.ChannelProvider;
import io.reactivex.netty.client.ChannelProviderFactory;
import io.reactivex.netty.client.Host;
import io.reactivex.netty.client.events.ClientEventListener;
import io.reactivex.netty.events.EventPublisher;
import io.reactivex.netty.events.EventSource;
import io.reactivex.netty.protocol.http.client.events.HttpClientEventPublisher;

public class HttpChannelProviderFactory implements ChannelProviderFactory {

    private final HttpClientEventPublisher clientEventPublisher;
    private final ChannelProviderFactory delegate;

    public HttpChannelProviderFactory(HttpClientEventPublisher clientEventPublisher) {
        this(clientEventPublisher, null);
    }

    public HttpChannelProviderFactory(HttpClientEventPublisher clientEventPublisher, ChannelProviderFactory delegate) {
        this.clientEventPublisher = clientEventPublisher;
        this.delegate = delegate instanceof HttpChannelProviderFactory
                                ? ((HttpChannelProviderFactory) delegate).delegate : delegate;
    }

    @Override
    public ChannelProvider newProvider(Host host, EventSource<? super ClientEventListener> eventSource,
                                       EventPublisher publisher, ClientEventListener clientPublisher) {
        final HttpClientEventPublisher hostPublisher = new HttpClientEventPublisher();
        ChannelProvider delegate = null;
        if (null != this.delegate) {
            delegate = this.delegate.newProvider(host, eventSource, publisher, clientPublisher);
        }
        hostPublisher.subscribe(clientEventPublisher);
        eventSource.subscribe(hostPublisher);
        return new HttpChannelProvider(hostPublisher, delegate);
    }
}