James Moger
2015-11-22 ed552ba47c02779c270ffd62841d6d1048dade70
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/*
 * Copyright 2011 gitblit.com.
 *
 * 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.gitblit.utils;
 
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TimeZone;
import java.util.TreeSet;
 
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Repository;
 
import com.gitblit.IStoredSettings;
import com.gitblit.Keys;
import com.gitblit.manager.IRepositoryManager;
import com.gitblit.models.Activity;
import com.gitblit.models.RefModel;
import com.gitblit.models.RepositoryCommit;
import com.gitblit.models.RepositoryModel;
 
/**
 * Utility class for building activity information from repositories.
 *
 * @author James Moger
 *
 */
public class ActivityUtils {
 
    /**
     * Gets the recent activity from the repositories for the last daysBack days
     * on the specified branch.
     *
     * @param settings
     *            the runtime settings
     * @param repositoryManager
     *            the repository manager
     * @param models
     *            the list of repositories to query
     * @param daysBack
     *            the number of days back from Now to collect
     * @param objectId
     *            the branch to retrieve. If this value is null or empty all
     *            branches are queried.
     * @param timezone
     *            the timezone for aggregating commits
     * @return
     */
    public static List<Activity> getRecentActivity(
                    IStoredSettings settings,
                    IRepositoryManager repositoryManager,
                    List<RepositoryModel> models,
                    int daysBack,
                    String objectId,
                    TimeZone timezone) {
 
        // Activity panel shows last daysBack of activity across all
        // repositories.
        Date thresholdDate = new Date(System.currentTimeMillis() - daysBack * TimeUtils.ONEDAY);
 
        // Build a map of DailyActivity from the available repositories for the
        // specified threshold date.
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        df.setTimeZone(timezone);
        Calendar cal = Calendar.getInstance();
        cal.setTimeZone(timezone);
 
        // aggregate author exclusions
        Set<String> authorExclusions = new TreeSet<String>();
        authorExclusions.addAll(settings.getStrings(Keys.web.metricAuthorExclusions));
        for (RepositoryModel model : models) {
            if (!ArrayUtils.isEmpty(model.metricAuthorExclusions)) {
                authorExclusions.addAll(model.metricAuthorExclusions);
            }
        }
 
        Map<String, Activity> activity = new HashMap<String, Activity>();
        for (RepositoryModel model : models) {
            if (!model.isShowActivity()) {
                // skip this repository
                continue;
            }
            if (model.hasCommits && model.lastChange.after(thresholdDate)) {
                if (model.isCollectingGarbage) {
                    continue;
                }
                Repository repository = repositoryManager.getRepository(model.name);
                List<String> branches = new ArrayList<String>();
                if (StringUtils.isEmpty(objectId)) {
                    for (RefModel local : JGitUtils.getLocalBranches(
                            repository, true, -1)) {
                        if (!local.getDate().after(thresholdDate)) {
                            // branch not recently updated
                            continue;
                        }
                        branches.add(local.getName());
                    }
                } else {
                    branches.add(objectId);
                }
 
                for (String branch : branches) {
                    String shortName = branch;
                    if (shortName.startsWith(Constants.R_HEADS)) {
                        shortName = shortName.substring(Constants.R_HEADS.length());
                    }
                    List<RepositoryCommit> commits = CommitCache.instance().getCommits(model.name, repository, branch, thresholdDate);
                    if (model.maxActivityCommits > 0 && commits.size() > model.maxActivityCommits) {
                        // trim commits to maximum count
                        commits = commits.subList(0,  model.maxActivityCommits);
                    }
                    for (RepositoryCommit commit : commits) {
                        Date date = commit.getCommitDate();
                        String dateStr = df.format(date);
                        if (!activity.containsKey(dateStr)) {
                            // Normalize the date to midnight
                            cal.setTime(date);
                            cal.set(Calendar.HOUR_OF_DAY, 0);
                            cal.set(Calendar.MINUTE, 0);
                            cal.set(Calendar.SECOND, 0);
                            cal.set(Calendar.MILLISECOND, 0);
                            Activity a = new Activity(cal.getTime());
                            a.excludeAuthors(authorExclusions);
                            activity.put(dateStr, a);
                        }
                        activity.get(dateStr).addCommit(commit);
                    }
                }
 
                // close the repository
                repository.close();
            }
        }
 
        List<Activity> recentActivity = new ArrayList<Activity>(activity.values());
        return recentActivity;
    }
 
    /**
     * Creates a Gravatar thumbnail url from the specified email address.
     *
     * @param email
     *            address to query Gravatar
     * @param width
     *            size of thumbnail. if width <= 0, the default of 50 is used.
     * @return
     */
    public static String getGravatarIdenticonUrl(String email, int width) {
        if (width <= 0) {
            width = 50;
        }
        String emailHash = StringUtils.getMD5(email.toLowerCase());
        String url = MessageFormat.format(
                "https://www.gravatar.com/avatar/{0}?s={1,number,0}&d=identicon", emailHash, width);
        return url;
    }
 
    /**
     * Creates a Gravatar thumbnail url from the specified email address.
     *
     * @param email
     *            address to query Gravatar
     * @param width
     *            size of thumbnail. if width <= 0, the default of 50 is used.
     * @return
     */
    public static String getGravatarThumbnailUrl(String email, int width) {
        if (width <= 0) {
            width = 50;
        }
        String emailHash = StringUtils.getMD5(email.toLowerCase());
        String url = MessageFormat.format(
                "https://www.gravatar.com/avatar/{0}?s={1,number,0}&d=mm", emailHash, width);
        return url;
    }
}