| /** |
| * 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. |
| */ |
| |
| #ifndef __ZOOKEEPER_URL_HPP__ |
| #define __ZOOKEEPER_URL_HPP__ |
| |
| #include <string> |
| |
| #include <stout/error.hpp> |
| #include <stout/option.hpp> |
| #include <stout/strings.hpp> |
| #include <stout/try.hpp> |
| |
| #include "zookeeper/authentication.hpp" |
| |
| namespace zookeeper { |
| |
| // Describes a ZooKeeper URL of the form: |
| // |
| // zk://username:password@servers/path |
| // |
| // Where username:password is for the 'digest' scheme (see ZooKeeper |
| // documentation regarding "access controls using ACLs") and servers |
| // is of the form: |
| // |
| // host1:port1,host2:port2,host3:port3 |
| // |
| // Note that in the future we may want to support authentication |
| // mechanisms other than 'digest' and have a URL of the following |
| // form. |
| // |
| // zk://scheme:credentials@servers/path |
| class URL |
| { |
| public: |
| static Try<URL> parse(const std::string& url); |
| |
| static const char* scheme() |
| { |
| return "zk://"; |
| } |
| |
| const Option<Authentication> authentication; |
| const std::string servers; |
| const std::string path; |
| |
| private: |
| URL(const std::string& _servers, |
| const std::string& _path) |
| : servers(_servers), |
| path(_path) {} |
| |
| URL(const std::string& credentials, |
| const std::string& _servers, |
| const std::string& _path) |
| : authentication(Authentication("digest", credentials)), |
| servers(_servers), |
| path(_path) {} |
| }; |
| |
| |
| inline Try<URL> URL::parse(const std::string& url) |
| { |
| std::string s = strings::trim(url); |
| |
| if (!strings::startsWith(s, URL::scheme())) { |
| return Error("Expecting 'zk://' at the beginning of the URL"); |
| } |
| s = s.substr(5); |
| |
| // Look for the trailing '/' (if any), that's where the path starts. |
| std::string path; |
| do { |
| size_t index = s.find_last_of('/'); |
| |
| if (index == std::string::npos) { |
| break; |
| } else { |
| path = s.substr(index) + path; |
| s = s.substr(0, index); |
| } |
| } while (true); |
| |
| if (path == "") { |
| path = "/"; |
| } |
| |
| // Look for the trailing '@' (if any), that's where servers starts. |
| size_t index = s.find_last_of('@'); |
| |
| if (index != std::string::npos) { |
| return URL(s.substr(0, index), s.substr(index + 1), path); |
| } else { |
| return URL(s, path); |
| } |
| } |
| |
| inline std::ostream& operator<<(std::ostream& stream, const URL& url) |
| { |
| stream << URL::scheme(); |
| if (url.authentication.isSome()) { |
| stream << url.authentication.get() << "@"; |
| } |
| return stream << url.servers << url.path; |
| } |
| |
| } // namespace zookeeper { |
| |
| #endif // __ZOOKEEPER_URL_HPP__ |