001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * SonarQube is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.wsclient.system.internal;
021    
022    import org.json.simple.JSONValue;
023    import org.sonar.wsclient.internal.HttpRequestFactory;
024    import org.sonar.wsclient.system.Migration;
025    import org.sonar.wsclient.system.SystemClient;
026    
027    import java.util.Collections;
028    import java.util.Map;
029    
030    public class DefaultSystemClient implements SystemClient {
031    
032      private final HttpRequestFactory requestFactory;
033    
034      public DefaultSystemClient(HttpRequestFactory requestFactory) {
035        this.requestFactory = requestFactory;
036      }
037    
038      @Override
039      public Migration migrate() {
040        String json = requestFactory.post("/api/server/setup", Collections.<String, Object>emptyMap());
041        return jsonToMigration(json);
042      }
043    
044      @Override
045      public Migration migrate(long timeoutInMs, long rateInMs) {
046        if (rateInMs >= timeoutInMs) {
047          throw new IllegalArgumentException("Timeout must be greater than rate");
048        }
049        Migration migration = null;
050        boolean running = true;
051        long endAt = System.currentTimeMillis() + timeoutInMs;
052        while (running && System.currentTimeMillis() < endAt) {
053          migration = migrate();
054          if (migration.status() == Migration.Status.MIGRATION_NEEDED ||
055            migration.status() == Migration.Status.MIGRATION_RUNNING) {
056            sleepQuietly(rateInMs);
057          } else {
058            running = false;
059          }
060        }
061        return migration;
062      }
063    
064      @Override
065      public void restart() {
066        requestFactory.post("/api/system/restart", Collections.<String, Object>emptyMap());
067      }
068    
069      private void sleepQuietly(long rateInMs) {
070        try {
071          Thread.sleep(rateInMs);
072        } catch (InterruptedException e) {
073          throw new IllegalStateException("Fail to sleep!", e);
074        }
075      }
076    
077      private Migration jsonToMigration(String json) {
078        Map jsonRoot = (Map) JSONValue.parse(json);
079        return new DefaultMigration(jsonRoot);
080      }
081    }