/*
|
* 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.Collections;
|
import java.util.Date;
|
import java.util.HashMap;
|
import java.util.List;
|
import java.util.Map;
|
|
import org.eclipse.jgit.lib.ObjectId;
|
import org.eclipse.jgit.lib.Repository;
|
import org.eclipse.jgit.revwalk.RevCommit;
|
import org.eclipse.jgit.revwalk.RevWalk;
|
import org.slf4j.Logger;
|
import org.slf4j.LoggerFactory;
|
|
import com.gitblit.models.Metric;
|
import com.gitblit.models.RefModel;
|
|
/**
|
* Utility class for collecting metrics on a branch, tag, or other ref within
|
* the repository.
|
*
|
* @author James Moger
|
*
|
*/
|
public class MetricUtils {
|
|
private static final Logger LOGGER = LoggerFactory.getLogger(MetricUtils.class);
|
|
/**
|
* Log an error message and exception.
|
*
|
* @param t
|
* @param repository
|
* if repository is not null it MUST be the {0} parameter in the
|
* pattern.
|
* @param pattern
|
* @param objects
|
*/
|
private static void error(Throwable t, Repository repository, String pattern, Object... objects) {
|
List<Object> parameters = new ArrayList<Object>();
|
if (objects != null && objects.length > 0) {
|
for (Object o : objects) {
|
parameters.add(o);
|
}
|
}
|
if (repository != null) {
|
parameters.add(0, repository.getDirectory().getAbsolutePath());
|
}
|
LOGGER.error(MessageFormat.format(pattern, parameters.toArray()), t);
|
}
|
|
/**
|
* Returns the list of metrics for the specified commit reference, branch,
|
* or tag within the repository. If includeTotal is true, the total of all
|
* the metrics will be included as the first element in the returned list.
|
*
|
* If the dateformat is unspecified an attempt is made to determine an
|
* appropriate date format by determining the time difference between the
|
* first commit on the branch and the most recent commit. This assumes that
|
* the commits are linear.
|
*
|
* @param repository
|
* @param objectId
|
* if null or empty, HEAD is assumed.
|
* @param includeTotal
|
* @param dateFormat
|
* @return list of metrics
|
*/
|
public static List<Metric> getDateMetrics(Repository repository, String objectId,
|
boolean includeTotal, String dateFormat) {
|
Metric total = new Metric("TOTAL");
|
final Map<String, Metric> metricMap = new HashMap<String, Metric>();
|
|
if (JGitUtils.hasCommits(repository)) {
|
final List<RefModel> tags = JGitUtils.getTags(repository, true, -1);
|
final Map<ObjectId, RefModel> tagMap = new HashMap<ObjectId, RefModel>();
|
for (RefModel tag : tags) {
|
tagMap.put(tag.getReferencedObjectId(), tag);
|
}
|
RevWalk revWalk = null;
|
try {
|
// resolve branch
|
ObjectId branchObject;
|
if (StringUtils.isEmpty(objectId)) {
|
branchObject = JGitUtils.getDefaultBranch(repository);
|
} else {
|
branchObject = repository.resolve(objectId);
|
}
|
|
revWalk = new RevWalk(repository);
|
RevCommit lastCommit = revWalk.parseCommit(branchObject);
|
revWalk.markStart(lastCommit);
|
|
DateFormat df;
|
if (StringUtils.isEmpty(dateFormat)) {
|
// dynamically determine date format
|
RevCommit firstCommit = JGitUtils.getFirstCommit(repository,
|
branchObject.getName());
|
int diffDays = (lastCommit.getCommitTime() - firstCommit.getCommitTime())
|
/ (60 * 60 * 24);
|
total.duration = diffDays;
|
if (diffDays <= 365) {
|
// Days
|
df = new SimpleDateFormat("yyyy-MM-dd");
|
} else {
|
// Months
|
df = new SimpleDateFormat("yyyy-MM");
|
}
|
} else {
|
// use specified date format
|
df = new SimpleDateFormat(dateFormat);
|
}
|
|
Iterable<RevCommit> revlog = revWalk;
|
for (RevCommit rev : revlog) {
|
Date d = JGitUtils.getCommitDate(rev);
|
String p = df.format(d);
|
if (!metricMap.containsKey(p)) {
|
metricMap.put(p, new Metric(p));
|
}
|
Metric m = metricMap.get(p);
|
m.count++;
|
total.count++;
|
if (tagMap.containsKey(rev.getId())) {
|
m.tag++;
|
total.tag++;
|
}
|
}
|
} catch (Throwable t) {
|
error(t, repository, "{0} failed to mine log history for date metrics of {1}",
|
objectId);
|
} finally {
|
if (revWalk != null) {
|
revWalk.dispose();
|
}
|
}
|
}
|
List<String> keys = new ArrayList<String>(metricMap.keySet());
|
Collections.sort(keys);
|
List<Metric> metrics = new ArrayList<Metric>();
|
for (String key : keys) {
|
metrics.add(metricMap.get(key));
|
}
|
if (includeTotal) {
|
metrics.add(0, total);
|
}
|
return metrics;
|
}
|
|
/**
|
* Returns a list of author metrics for the specified repository.
|
*
|
* @param repository
|
* @param objectId
|
* if null or empty, HEAD is assumed.
|
* @param byEmailAddress
|
* group metrics by author email address otherwise by author name
|
* @return list of metrics
|
*/
|
public static List<Metric> getAuthorMetrics(Repository repository, String objectId,
|
boolean byEmailAddress) {
|
final Map<String, Metric> metricMap = new HashMap<String, Metric>();
|
if (JGitUtils.hasCommits(repository)) {
|
try {
|
RevWalk walk = new RevWalk(repository);
|
// resolve branch
|
ObjectId branchObject;
|
if (StringUtils.isEmpty(objectId)) {
|
branchObject = JGitUtils.getDefaultBranch(repository);
|
} else {
|
branchObject = repository.resolve(objectId);
|
}
|
RevCommit lastCommit = walk.parseCommit(branchObject);
|
walk.markStart(lastCommit);
|
|
Iterable<RevCommit> revlog = walk;
|
for (RevCommit rev : revlog) {
|
String p;
|
if (byEmailAddress) {
|
p = rev.getAuthorIdent().getEmailAddress().toLowerCase();
|
if (StringUtils.isEmpty(p)) {
|
p = rev.getAuthorIdent().getName().toLowerCase();
|
}
|
} else {
|
p = rev.getAuthorIdent().getName().toLowerCase();
|
if (StringUtils.isEmpty(p)) {
|
p = rev.getAuthorIdent().getEmailAddress().toLowerCase();
|
}
|
}
|
if (!metricMap.containsKey(p)) {
|
metricMap.put(p, new Metric(p));
|
}
|
Metric m = metricMap.get(p);
|
m.count++;
|
}
|
} catch (Throwable t) {
|
error(t, repository, "{0} failed to mine log history for author metrics of {1}",
|
objectId);
|
}
|
}
|
List<String> keys = new ArrayList<String>(metricMap.keySet());
|
Collections.sort(keys);
|
List<Metric> metrics = new ArrayList<Metric>();
|
for (String key : keys) {
|
metrics.add(metricMap.get(key));
|
}
|
return metrics;
|
}
|
}
|
