com.tellapart.taba.TabaApiFactory.java Source code

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Here is the source code for com.tellapart.taba.TabaApiFactory.java

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/* Copyright 2014 TellApart, 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.tellapart.taba;

import com.google.common.base.Preconditions;
import com.tellapart.taba.engine.DefaultClientEngine;
import com.tellapart.taba.engine.TabaClientEngine;
import org.apache.http.impl.client.HttpClients;

import java.util.concurrent.Executors;

/**
 * Singleton management for the TabaApi, for use cases without dependency
 * injection.
 */
public class TabaApiFactory {

    protected static TabaClientEngine engine;
    protected static TabaApi api;

    // Class is static only.
    private TabaApiFactory() {
    }

    public static synchronized void initialize(TabaClientProperties properties) {
        Preconditions.checkState(engine == null, "Already initialized.");

        TabaClientEngine clientEngine = new DefaultClientEngine(properties, HttpClients.createDefault(),
                Executors.newScheduledThreadPool(1));

        initialize(clientEngine);
    }

    public static synchronized void initialize(TabaClientEngine clientEngine) {
        Preconditions.checkState(engine == null, "Already initialized.");
        engine = clientEngine;
        api = new TabaApi(engine);
    }

    public static TabaApi getApi() {
        return api;
    }

}