| /* |
| 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. |
| */ |
| |
| #include <google/protobuf/stubs/common.h> |
| #include <unistd.h> |
| #include "tools_common.h" |
| |
| void usage(){ |
| std::cout << "Usage: hdfs_allowSnapshot [OPTION] PATH" |
| << std::endl |
| << std::endl << "Allowing snapshots of a directory at PATH to be created." |
| << std::endl << "If the operation completes successfully, the directory becomes snapshottable." |
| << std::endl |
| << std::endl << " -h display this help and exit" |
| << std::endl |
| << std::endl << "Examples:" |
| << std::endl << "hdfs_allowSnapshot hdfs://localhost.localdomain:8020/dir" |
| << std::endl << "hdfs_allowSnapshot /dir1/dir2" |
| << std::endl; |
| } |
| |
| int main(int argc, char *argv[]) { |
| //We should have at least 2 arguments |
| if (argc < 2) { |
| usage(); |
| exit(EXIT_FAILURE); |
| } |
| |
| int input; |
| |
| //Using GetOpt to read in the values |
| opterr = 0; |
| while ((input = getopt(argc, argv, "h")) != -1) { |
| switch (input) |
| { |
| case 'h': |
| usage(); |
| exit(EXIT_SUCCESS); |
| case '?': |
| if (isprint(optopt)) |
| std::cerr << "Unknown option `-" << (char) optopt << "'." << std::endl; |
| else |
| std::cerr << "Unknown option character `" << (char) optopt << "'." << std::endl; |
| usage(); |
| exit(EXIT_FAILURE); |
| default: |
| exit(EXIT_FAILURE); |
| } |
| } |
| std::string uri_path = argv[optind]; |
| |
| //Building a URI object from the given uri_path |
| hdfs::URI uri = hdfs::parse_path_or_exit(uri_path); |
| |
| std::shared_ptr<hdfs::FileSystem> fs = hdfs::doConnect(uri, false); |
| if (!fs) { |
| std::cerr << "Could not connect the file system. " << std::endl; |
| exit(EXIT_FAILURE); |
| } |
| |
| hdfs::Status status = fs->AllowSnapshot(uri.get_path()); |
| if (!status.ok()) { |
| std::cerr << "Error: " << status.ToString() << std::endl; |
| exit(EXIT_FAILURE); |
| } |
| |
| // Clean up static data and prevent valgrind memory leaks |
| google::protobuf::ShutdownProtobufLibrary(); |
| return 0; |
| } |