org.everit.jira.updatenotifier.TimetrackerVersionUpdater.java Source code

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Here is the source code for org.everit.jira.updatenotifier.TimetrackerVersionUpdater.java

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/*
 * Copyright (C) 2011 Everit Kft. (http://www.everit.org)
 *
 * 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.everit.jira.updatenotifier;

import java.io.IOException;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.GetMethod;
import org.everit.jira.updatenotifier.exception.UpdateException;
import org.everit.jira.updatenotifier.json.JiraMarketplaceJSONDTO;

import com.atlassian.jira.component.ComponentAccessor;
import com.atlassian.jira.util.BuildUtilsInfo;
import com.google.gson.Gson;

/**
 * The JTTP version updater class.
 */
public class TimetrackerVersionUpdater {

    private static final String MARKETPLACE_URL_FIRST_PART = "https://marketplace.atlassian.com/rest/2/addons/org.everit.jira.timetracker.plugin?application=jira&applicationBuild=";

    private static final String MARKETPLACE_URL_WITH_VERSION_PARAMETER = "&withVersion=true";

    private static final long ONE_DAY_IN_MILISEC = 86400000L;

    private int buildNumber;

    private UpdateNotifier updateNotifier;

    public TimetrackerVersionUpdater(final UpdateNotifier updateNotifier) {
        buildNumber = ComponentAccessor.getComponent(BuildUtilsInfo.class).getApplicationBuildNumber();
        this.updateNotifier = updateNotifier;
    }

    private synchronized void update() {
        if (!updateRequired()) {
            return;
        }
        updateNotifier.putLastUpdateTime(System.currentTimeMillis());
        HttpClient httpClient = new HttpClient();
        HttpMethod method = new GetMethod(
                MARKETPLACE_URL_FIRST_PART + buildNumber + MARKETPLACE_URL_WITH_VERSION_PARAMETER);
        method.addRequestHeader("accept", "application/json");
        String response;
        try {
            int statusCode = httpClient.executeMethod(method);
            if (statusCode != HttpStatus.SC_OK) {
                throw new UpdateException("Update JTTP latest version failed. Status code is : " + statusCode
                        + "Response body is: " + method.getResponseBodyAsString());
            }
            response = method.getResponseBodyAsString();
        } catch (IOException e) {
            throw new UpdateException("Update JTTP latest version failed. ", e);
        }
        Gson gson = new Gson();
        JiraMarketplaceJSONDTO fromJson = gson.fromJson(response, JiraMarketplaceJSONDTO.class);
        String latestVersion = fromJson.getEmbedded().getVersion().getName();
        updateNotifier.putLatestVersion(latestVersion);
    }

    /**
     * Get the latest version from marketplace if the last update is older than one day. The new
     * version store in the {@link UpdateNotifier} class.
     *
     * @throws {@link
     *           UpdateException} if the update failed.
     */
    public void updateLatestVersion() {
        if (updateRequired()) {
            update();
        }
    }

    private boolean updateRequired() {
        Long lastUpdateTimeInMilis = updateNotifier.getLastUpdateTime();
        return (lastUpdateTimeInMilis == null)
                || ((System.currentTimeMillis() - lastUpdateTimeInMilis.longValue()) > ONE_DAY_IN_MILISEC);
    }
}