| // Copyright 2016 Twitter. All rights reserved. |
| // |
| // 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.twitter.heron.spi.common; |
| |
| import java.io.File; |
| import java.io.FilenameFilter; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.logging.Logger; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public final class Jars { |
| private static final Logger LOG = Logger.getLogger(Jars.class.getName()); |
| |
| // scheduler jar search pattern |
| private static Pattern schedulerJarPattern = |
| Pattern.compile("heron-.*-scheduler.*.jar|heron-scheduler*.jar"); |
| |
| // metrics manager search pattern |
| private static Pattern metricsManagerPattern = |
| Pattern.compile("heron-.*-metricsmgr.*.jar|heron-metricsmgr*.jar"); |
| |
| private Jars() { |
| } |
| |
| /** |
| * Given a directory, get the list of jars matching the pattern. |
| * |
| * @param pattern the pattern to match for jar files |
| * @param directory the directory to search |
| * @return list of jars |
| */ |
| public static List<String> getJars(final Pattern pattern, String directory) { |
| |
| // create the filename filter |
| FilenameFilter fileNameFilter = new FilenameFilter() { |
| @Override |
| public boolean accept(File dir, String name) { |
| Matcher m = pattern.matcher(name); |
| return m.matches(); |
| } |
| }; |
| |
| // find the list of files |
| File[] paths = new File(directory).listFiles(fileNameFilter); |
| |
| // return it is as a list of files |
| ArrayList<String> files = new ArrayList<>(); |
| for (File path : paths) { |
| files.add(path.toString()); |
| } |
| |
| return files; |
| } |
| |
| /** |
| * Get the class path from the list of jars that match the pattern |
| * in the given directory |
| * |
| * @param pattern the pattern to match for jar files |
| * @param directory the directory to search |
| * @return class path of jars |
| */ |
| public static String getClassPath(Pattern pattern, String directory) { |
| List<String> jars = getJars(pattern, directory); |
| |
| StringBuilder sb = new StringBuilder(); |
| for (String s : jars) { |
| sb.append(s).append(':'); |
| } |
| sb.deleteCharAt(sb.length() - 1); // delete last colon |
| |
| return sb.toString(); |
| } |
| |
| /** |
| * Given a directory, get the list of scheduler jars. A jar belongs to |
| * scheduler, if it has the either the pattern "heron-scheduler*.jar" or |
| * "heron-*-scheduler*.jar" |
| * |
| * @param directory the directory to search |
| * @return list of scheduler jars |
| */ |
| public static List<String> getSchedulerJars(String directory) { |
| return getJars(schedulerJarPattern, directory); |
| } |
| |
| /** |
| * Get the scheduler class path from the list of scheduler jars in a |
| * directory. |
| * |
| * @param directory the directory to search |
| * @return class of scheduler jars |
| */ |
| public static String getSchedulerClassPath(String directory) { |
| return getClassPath(schedulerJarPattern, directory); |
| } |
| |
| /** |
| * Given a directory, get the list of metricsmgr jars. A jar belongs to |
| * metrics, if it has the either the pattern "heron-metricsmgr*.jar" or |
| * "heron-*-metricsmgr*.jar" |
| * |
| * @param directory the directory to search |
| * @return list of metrics manager jars |
| */ |
| public static List<String> getMetricsManagerJars(String directory) { |
| return getJars(metricsManagerPattern, directory); |
| } |
| |
| /** |
| * Get the metrics mgr class path from the list of metrics manager jars in a |
| * directory. |
| * |
| * @param directory the directory to search |
| * @return class path of metrics manager jars |
| */ |
| public static String getMetricsManagerClassPath(String directory) { |
| return getClassPath(metricsManagerPattern, directory); |
| } |
| } |