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/**
* 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.hadoop.hive.ql.util;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.io.File;
import java.io.IOException;
import org.apache.hadoop.hive.ql.session.SessionState.LogHelper;
import org.slf4j.LoggerFactory;
import groovy.grape.Grape;
import groovy.lang.GroovyClassLoader;
public class DependencyResolver {
private static final String HIVE_HOME = "HIVE_HOME";
private static final String HIVE_CONF_DIR = "HIVE_CONF_DIR";
private String ivysettingsPath;
private static LogHelper _console = new LogHelper(LoggerFactory.getLogger("DependencyResolver"));
public DependencyResolver() {
// Check if HIVE_CONF_DIR is defined
if (System.getenv().containsKey(HIVE_CONF_DIR)) {
ivysettingsPath = System.getenv().get(HIVE_CONF_DIR) + "/ivysettings.xml";
}
// If HIVE_CONF_DIR is not defined or file is not found in HIVE_CONF_DIR then check HIVE_HOME/conf
if (ivysettingsPath == null || !(new File(ivysettingsPath).exists())) {
if (System.getenv().containsKey(HIVE_HOME)) {
ivysettingsPath = System.getenv().get(HIVE_HOME) + "/conf/ivysettings.xml";
}
}
// If HIVE_HOME is not defined or file is not found in HIVE_HOME/conf then load default ivysettings.xml from class loader
if (ivysettingsPath == null || !(new File(ivysettingsPath).exists())) {
URL ivysetttingsResource = ClassLoader.getSystemResource("ivysettings.xml");
if (ivysetttingsResource != null){
ivysettingsPath = ivysetttingsResource.getFile();
_console.printInfo("ivysettings.xml file not found in HIVE_HOME or HIVE_CONF_DIR," + ivysettingsPath + " will be used");
}
}
}
/**
*
* @param uri
* @return List of URIs of downloaded jars
* @throws URISyntaxException
* @throws IOException
*/
public List downloadDependencies(URI uri) throws URISyntaxException, IOException {
Map dependencyMap = new HashMap();
String authority = uri.getAuthority();
if (authority == null) {
throw new URISyntaxException(authority, "Invalid url: Expected 'org:module:version', found null");
}
String[] authorityTokens = authority.split(":");
if (authorityTokens.length != 3) {
throw new URISyntaxException(authority, "Invalid url: Expected 'org:module:version', found " + authority);
}
dependencyMap.put("org", authorityTokens[0]);
dependencyMap.put("module", authorityTokens[1]);
dependencyMap.put("version", authorityTokens[2]);
Map queryMap = parseQueryString(uri.getQuery());
if (queryMap != null) {
dependencyMap.putAll(queryMap);
}
return grab(dependencyMap);
}
/**
* @param queryString
* @return queryMap Map which contains grape parameters such as transitive, exclude, ext and classifier.
* Example: Input: ext=jar&exclude=org.mortbay.jetty:jetty&transitive=true
* Output: {[ext]:[jar], [exclude]:{[group]:[org.mortbay.jetty], [module]:[jetty]}, [transitive]:[true]}
* @throws URISyntaxException
*/
private Map parseQueryString(String queryString) throws URISyntaxException {
if (queryString == null || queryString.isEmpty()) {
return null;
}
List> excludeList = new LinkedList>();
Map queryMap = new HashMap();
String[] mapTokens = queryString.split("&");
for (String tokens : mapTokens) {
String[] mapPair = tokens.split("=");
if (mapPair.length != 2) {
throw new RuntimeException("Invalid query string: " + queryString);
}
if (mapPair[0].equals("exclude")) {
excludeList.addAll(computeExcludeList(mapPair[1]));
} else if (mapPair[0].equals("transitive")) {
if (mapPair[1].toLowerCase().equals("true")) {
queryMap.put(mapPair[0], true);
} else {
queryMap.put(mapPair[0], false);
}
} else {
queryMap.put(mapPair[0], mapPair[1]);
}
}
if (!excludeList.isEmpty()) {
queryMap.put("exclude", excludeList);
}
return queryMap;
}
private List> computeExcludeList(String excludeString) throws URISyntaxException {
String excludes[] = excludeString.split(",");
List> excludeList = new LinkedList>();
for (String exclude : excludes) {
Map tempMap = new HashMap();
String args[] = exclude.split(":");
if (args.length != 2) {
throw new URISyntaxException(excludeString,
"Invalid exclude string: expected 'org:module,org:module,..', found " + excludeString);
}
tempMap.put("group", args[0]);
tempMap.put("module", args[1]);
excludeList.add(tempMap);
}
return excludeList;
}
/**
*
* @param dependencies
* @return List of URIs of downloaded jars
* @throws IOException
*/
private List grab(Map dependencies) throws IOException {
Map args = new HashMap();
URI[] localUrls;
//grape expects excludes key in args map
if (dependencies.containsKey("exclude")) {
args.put("excludes", dependencies.get("exclude"));
}
//Set transitive to true by default
if (!dependencies.containsKey("transitive")) {
dependencies.put("transitive", true);
}
args.put("classLoader", new GroovyClassLoader());
System.setProperty("grape.config", ivysettingsPath);
localUrls = Grape.resolve(args, dependencies);
if (localUrls == null) {
throw new IOException("Not able to download all the dependencies..");
}
return Arrays.asList(localUrls);
}
}
