com.hotels.styx.client.connectionpool.ConnectionPools Maven / Gradle / Ivy

Go to download
/**
 * Copyright (C) 2013-2018 Expedia 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.hotels.styx.client.connectionpool;

import com.hotels.styx.api.client.ConnectionPool;
import com.hotels.styx.api.client.Origin;
import com.hotels.styx.api.metrics.MetricRegistry;
import com.hotels.styx.client.applications.BackendService;
import com.hotels.styx.client.netty.connectionpool.NettyConnectionFactory;

import static com.hotels.styx.client.HttpRequestOperationFactory.Builder.httpRequestOperationFactoryBuilder;
import static com.hotels.styx.client.connectionpool.ConnectionPoolSettings.defaultConnectionPoolSettings;

/**
 * Helper routines for building connection pools with default settings.
 */
public final class ConnectionPools {
    private ConnectionPools() {
    }

    public static ConnectionPool poolForOrigin(Origin origin) {
        return new SimpleConnectionPool(origin, defaultConnectionPoolSettings(), new NettyConnectionFactory.Builder().build());
    }

    public static ConnectionPool.Factory simplePoolFactory() {
        return ConnectionPools::poolForOrigin;
    }

    public static ConnectionPool poolForOrigin(Origin origin, MetricRegistry metricRegistry) {
        return new StatsReportingConnectionPool(
                new SimpleConnectionPool(
                        origin,
                        defaultConnectionPoolSettings(),
                        new NettyConnectionFactory.Builder()
                                .build()),
                metricRegistry);
    }

    public static ConnectionPool poolForOrigin(Origin origin, MetricRegistry metricRegistry, int responseTimeoutMillis) {
        return new StatsReportingConnectionPool(
                new SimpleConnectionPool(
                        origin,
                        defaultConnectionPoolSettings(),
                        new NettyConnectionFactory.Builder()
                                .httpRequestOperationFactory(httpRequestOperationFactoryBuilder().responseTimeoutMillis(responseTimeoutMillis).build())
                                .build()),
                metricRegistry);
    }

    private static ConnectionPool poolForOrigin(Origin origin, MetricRegistry metricRegistry, NettyConnectionFactory connectionFactory) {
        return new StatsReportingConnectionPool(
                new SimpleConnectionPool(
                        origin,
                        defaultConnectionPoolSettings(),
                        connectionFactory),
                metricRegistry
        );
    }

    public static ConnectionPool.Factory simplePoolFactory(MetricRegistry metricRegistry) {
        return origin -> poolForOrigin(origin, metricRegistry);
    }

    public static ConnectionPool.Factory simplePoolFactory(BackendService backendService, MetricRegistry metricRegistry) {
        NettyConnectionFactory connectionFactory = new NettyConnectionFactory.Builder()
                .httpRequestOperationFactory(
                        httpRequestOperationFactoryBuilder()
                                .responseTimeoutMillis(backendService.responseTimeoutMillis())
                                .build())
                .build();

        return origin -> poolForOrigin(origin, metricRegistry, connectionFactory);
    }
}