com.facebook.buck.slb.LoadBalancedService.java Source code

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Here is the source code for com.facebook.buck.slb.LoadBalancedService.java

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/*
 * Copyright 2015-present Facebook, 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.facebook.buck.slb;

import com.facebook.buck.event.BuckEventBus;
import com.squareup.okhttp.Call;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;
import java.net.URI;

public class LoadBalancedService implements HttpService {
    private final HttpLoadBalancer slb;
    private final OkHttpClient client;
    private final BuckEventBus eventBus;

    public LoadBalancedService(HttpLoadBalancer slb, OkHttpClient client, BuckEventBus eventBus) {
        this.slb = slb;
        this.client = client;
        this.eventBus = eventBus;
    }

    @Override
    public Response makeRequest(String path, Request.Builder requestBuilder) throws IOException {
        URI server = slb.getBestServer();
        LoadBalancedServiceEventData.Builder data = LoadBalancedServiceEventData.builder().setServer(server);
        requestBuilder.url(SingleUriService.getFullUrl(server, path));
        Request request = requestBuilder.build();
        if (request.body() != null && request.body().contentLength() != -1) {
            data.setRequestSizeBytes(request.body().contentLength());
        }
        Call call = client.newCall(request);
        try {
            Response response = call.execute();
            if (response.body() != null && response.body().contentLength() != -1) {
                data.setResponseSizeBytes(response.body().contentLength());
            }
            slb.reportRequestSuccess(server);
            return response;
        } catch (IOException e) {
            data.setException(e);
            slb.reportRequestException(server);
            throw new IOException(e);
        } finally {
            eventBus.post(new LoadBalancedServiceEvent(data.build()));
        }
    }

    @Override
    public void close() {
        slb.close();
    }
}