org.llorllale.youtrack.api.session.UsernamePassword.java Source code

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Here is the source code for org.llorllale.youtrack.api.session.UsernamePassword.java

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/*
 * Copyright 2017 George Aristy
 *
 * 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 org.llorllale.youtrack.api.session;

import java.io.IOException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Arrays;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;

/**
 * <p>A login for the simple username/password use case.</p>
 * 
 * @author George Aristy (george.aristy@gmail.com)
 * @see Login
 * @since 0.1.0
 */
public final class UsernamePassword implements Login {
    private final URL youtrackUrl;
    private final HttpClient httpClient;
    private final String username;
    private final char[] password;

    /**
     * Ctor.
     * @param youtrackUrl the URL of the YouTrack API endpoint
     * @param username the principal
     * @param password the credentials
     * @param httpClient http client to use to call the remote API
     * @since 0.1.0
     */
    UsernamePassword(final URL youtrackUrl, String username, char[] password, HttpClient httpClient) {
        this.youtrackUrl = youtrackUrl;
        this.httpClient = httpClient;
        this.username = username;
        this.password = Arrays.copyOf(password, password.length);
    }

    @Override
    public Session session() throws AuthenticationException, IOException {
        try {
            final HttpResponse response = this.httpClient
                    .execute(new HttpPost(new URIBuilder(this.youtrackUrl.toString().concat("/user/login"))
                            .setParameter("login", this.username)
                            .setParameter("password", new String(this.password)).build()));

            //@checkstyle todo there is more branching here
            if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
                throw new AuthenticationException("Invalid credentials.");
            }

            final String cookieHeader = "Cookie";
            final Cookie cookie = Arrays.asList(response.getAllHeaders()).stream()
                    .filter(header -> "Set-Cookie".equals(header.getName()))
                    .map(header -> new DefaultCookie(cookieHeader, header.getValue().split(";")[0]))
                    .reduce((cookieA, cookieB) -> new DefaultCookie(cookieHeader,
                            cookieA.value().concat("; ").concat(cookieB.value())))
                    .get();

            return new DefaultSession(this.youtrackUrl, cookie);
        } catch (URISyntaxException e) {
            throw new IOException(e.getMessage());
        }
    }
}