| // 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.impala.util; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.Joiner; |
| |
| public class NativeLibUtil { |
| private final static Logger LOG = LoggerFactory.getLogger(NativeLibUtil.class); |
| |
| /** |
| * Attempts to load the given library from all paths in java.libary.path, |
| * as well as the current build directory (assuming we are in a test environment). |
| * Throws a RuntimeException if the library was unable to be loaded from |
| * any location. |
| */ |
| public static void loadLibrary(String libFileName) { |
| List<String> candidates = new ArrayList<>(Arrays.asList( |
| System.getProperty("java.library.path").split(":"))); |
| |
| // Fall back to automatically finding the library in test environments. |
| // This makes it easier to run tests from Eclipse without specially configuring |
| // the Run Configurations. |
| try { |
| String myPath = NativeLibUtil.class.getProtectionDomain() |
| .getCodeSource().getLocation().getPath(); |
| if (myPath.toString().endsWith("fe/target/classes/") || |
| myPath.toString().endsWith("fe/target/eclipse-classes/")) { |
| candidates.add(myPath + "../../../be/build/latest/service/"); |
| } |
| } catch (Exception e) { |
| LOG.warn("Unable to get path for NativeLibUtil class", e); |
| } |
| |
| for (String path: candidates) { |
| File libFile = new File(path + File.separator + libFileName); |
| if (libFile.exists()) { |
| System.load(libFile.getPath()); |
| return; |
| } |
| } |
| |
| throw new RuntimeException("Failed to load " + libFileName + " from any " + |
| "candidate location:\n" + Joiner.on("\n").join(candidates)); |
| } |
| } |