| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.slider.providers.agent; |
| |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.slider.common.tools.SliderFileSystem; |
| import org.apache.slider.common.tools.SliderUtils; |
| import org.apache.slider.providers.agent.application.metadata.DefaultConfig; |
| import org.apache.slider.providers.agent.application.metadata.DefaultConfigParser; |
| import org.apache.slider.providers.agent.application.metadata.Metainfo; |
| import org.apache.slider.providers.agent.application.metadata.MetainfoParser; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.FileNotFoundException; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * |
| */ |
| public class AgentUtils { |
| private static final Logger log = LoggerFactory.getLogger(AgentUtils.class); |
| |
| public static Metainfo getApplicationMetainfo(SliderFileSystem fileSystem, |
| String appDef) throws IOException { |
| log.info("Reading metainfo at {}", appDef); |
| FileSystem fs = fileSystem.getFileSystem(); |
| Path appPath = new Path(appDef); |
| InputStream metainfoStream = SliderUtils.getApplicationResourceInputStream( |
| fs, appPath, "metainfo.xml"); |
| if (metainfoStream == null) { |
| log.error("metainfo.xml is unavailable at {}.", appDef); |
| throw new FileNotFoundException("metainfo.xml is required in app package. " + |
| appPath); |
| } |
| |
| Metainfo metainfo = new MetainfoParser().parse(metainfoStream); |
| |
| return metainfo; |
| } |
| |
| static DefaultConfig getDefaultConfig(SliderFileSystem fileSystem, |
| String appDef, String configFileName) |
| throws IOException { |
| // this is the path inside the zip file |
| String fileToRead = "configuration/" + configFileName; |
| log.info("Reading default config file {} at {}", fileToRead, appDef); |
| InputStream configStream = SliderUtils.getApplicationResourceInputStream( |
| fileSystem.getFileSystem(), new Path(appDef), fileToRead); |
| if (configStream == null) { |
| log.error("{} is unavailable at {}.", fileToRead, appDef); |
| throw new IOException("Expected config file " + fileToRead + " is not available."); |
| } |
| |
| return new DefaultConfigParser().parse(configStream); |
| } |
| } |