com.cognifide.actions.msg.push.active.PushClient.java Source code

Introduction

Here is the source code for com.cognifide.actions.msg.push.active.PushClient.java

Source

/*--
 * #%L
 * Cognifide Actions
 * %%
 * Copyright (C) 2015 Cognifide
 * %%
 * 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.
 * #L%
 */

package com.cognifide.actions.msg.push.active;

import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.Executors;

import org.apache.commons.lang.StringUtils;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Properties;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.References;
import org.apache.sling.settings.SlingSettingsService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.cognifide.actions.msg.push.api.PushReceiver;
import com.day.cq.replication.AgentConfig;
import com.day.cq.replication.ConfigManager;
import com.day.cq.replication.ConfigManager.ConfigEvent;
import com.day.cq.replication.ConfigManager.ConfigEventListener;

@Component
@Properties({ @Property(name = "serverUrl", value = { "http://localhost:4503" }) })
@References({
        @Reference(name = "receiver", referenceInterface = PushReceiver.class, cardinality = ReferenceCardinality.OPTIONAL_MULTIPLE, policy = ReferencePolicy.DYNAMIC) })
public class PushClient implements ConfigEventListener {

    private static final Logger LOG = LoggerFactory.getLogger(PushClient.class);

    private final Set<PushReceiver> receivers = new CopyOnWriteArraySet<PushReceiver>();

    private List<PushClientRunnable> loops = new ArrayList<PushClientRunnable>();

    @Reference
    private SlingSettingsService settings;

    @Reference
    private ConfigManager agentConfigManager;

    @Activate
    public void activate(Map<String, Object> props) {
        if (!settings.getRunModes().contains("author")) {
            return;
        }
        startLoops();
        agentConfigManager.registerListener(this);
    }

    @Deactivate
    public void deactivate() {
        agentConfigManager.unregisterListener(this);
        stopLoops();
    }

    @Override
    public void onConfigEvent(ConfigEvent paramConfigEvent) {
        stopLoops();
        startLoops();
    }

    private void startLoops() {
        for (AgentConfig config : agentConfigManager.getConfigurations().values()) {
            if (config.isEnabled() && config.usedForReverseReplication()) {
                try {
                    final PushClientRunnable loop = createLoop(config);
                    Executors.newSingleThreadExecutor().execute(loop);
                    loops.add(loop);
                } catch (URISyntaxException e) {
                    LOG.error("Can't parse agent url: " + config.getTransportURI(), e);
                }
            }
        }
    }

    private PushClientRunnable createLoop(AgentConfig config) throws URISyntaxException {
        final String url = StringUtils.substringBefore(config.getTransportURI(), "/bin");
        final String username = config.getTransportUser();
        final String password = config.getTransportPassword();
        return new PushClientRunnable(receivers, url, username, password);
    }

    private void stopLoops() {
        for (PushClientRunnable loop : loops) {
            loop.stop();
        }
        loops.clear();
    }

    protected void bindReceiver(PushReceiver receiver) {
        receivers.add(receiver);
    }

    protected void unbindReceiver(PushReceiver receiver) {
        receivers.remove(receiver);
    }

}