net.codestory.rest.RestResponse.java Source code

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Here is the source code for net.codestory.rest.RestResponse.java

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/**
 * Copyright (C) 2013-2014 all@code-story.net
 *
 * 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 net.codestory.rest;

import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;

import java.io.IOException;
import java.net.CookieManager;
import java.net.HttpCookie;
import java.util.List;
import java.util.function.Function;

import static java.net.CookiePolicy.ACCEPT_ALL;

class RestResponse {
    private final CookieManager cookieManager;
    private final Response response;

    private String bodyAsString;

    private RestResponse(CookieManager cookieManager, Response response) {
        this.cookieManager = cookieManager;
        this.response = response;
    }

    static RestResponse call(String url, Function<OkHttpClient, OkHttpClient> configureClient,
            Function<Request.Builder, Request.Builder> configureRequest) throws IOException {
        CookieManager cookieManager = new CookieManager();
        cookieManager.setCookiePolicy(ACCEPT_ALL);

        Request.Builder request = configureRequest.apply(new Request.Builder().url(url));
        OkHttpClient client = configureClient.apply(new OkHttpClient().setCookieHandler(cookieManager));

        Response response = client.newCall(request.build()).execute();

        return new RestResponse(cookieManager, response);
    }

    public int code() {
        return response.code();
    }

    public String bodyAsString() {
        if (bodyAsString == null) {
            try {
                bodyAsString = response.body().string();
            } catch (IOException e) {
                throw new RuntimeException("Unable to read response as String", e);
            }
        }

        return bodyAsString;
    }

    public String contentType() {
        return header("Content-Type");
    }

    public String header(String name) {
        return response.header(name);
    }

    public String cookie(String name) {
        List<HttpCookie> cookies = cookieManager.getCookieStore().getCookies();
        return cookies.stream().filter(cookie -> cookie.getName().equals(name)).findFirst()
                .map(cookie -> cookie.getValue()).orElse(null);
    }
}