| /** |
| * 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.util; |
| |
| import org.apache.hadoop.util.NativeCodeLoader; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.compress.SnappyCodec; |
| import org.apache.hadoop.io.compress.zlib.ZlibFactory; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class NativeLibraryChecker { |
| /** |
| * A tool to test native library availability, |
| */ |
| public static void main(String[] args) { |
| String usage = "NativeLibraryChecker [-a|-h]\n" |
| + " -a use -a to check all libraries are available\n" |
| + " by default just check hadoop library is available\n" |
| + " exit with error code if check failed\n" |
| + " -h print this message\n"; |
| if (args.length > 1 || |
| (args.length == 1 && |
| !(args[0].equals("-a") || args[0].equals("-h")))) { |
| System.err.println(usage); |
| ExitUtil.terminate(1); |
| } |
| boolean checkAll = false; |
| if (args.length == 1) { |
| if (args[0].equals("-h")) { |
| System.out.println(usage); |
| return; |
| } |
| checkAll = true; |
| } |
| boolean nativeHadoopLoaded = NativeCodeLoader.isNativeCodeLoaded(); |
| boolean zlibLoaded = false; |
| boolean snappyLoaded = false; |
| // lz4 is linked within libhadoop |
| boolean lz4Loaded = nativeHadoopLoaded; |
| if (nativeHadoopLoaded) { |
| zlibLoaded = ZlibFactory.isNativeZlibLoaded(new Configuration()); |
| snappyLoaded = NativeCodeLoader.buildSupportsSnappy() && |
| SnappyCodec.isNativeCodeLoaded(); |
| } |
| System.out.println("Native library checking:"); |
| System.out.printf("hadoop: %b\n", nativeHadoopLoaded); |
| System.out.printf("zlib: %b\n", zlibLoaded); |
| System.out.printf("snappy: %b\n", snappyLoaded); |
| System.out.printf("lz4: %b\n", lz4Loaded); |
| if ((!nativeHadoopLoaded) || |
| (checkAll && !(zlibLoaded && snappyLoaded && lz4Loaded))) { |
| // return 1 to indicated check failed |
| ExitUtil.terminate(1); |
| } |
| } |
| } |