| // 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 <mesos/roles.hpp> |
| |
| #include <stout/foreach.hpp> |
| #include <stout/strings.hpp> |
| |
| using std::initializer_list; |
| using std::string; |
| using std::vector; |
| |
| namespace mesos { |
| namespace roles { |
| |
| // TODO(haosdent): Remove this function after we stop supporting `--roles` |
| // flag in master. |
| Try<vector<string>> parse(const string& text) |
| { |
| vector<string> roles = strings::tokenize(text, ","); |
| |
| Option<Error> error = validate(roles); |
| if (error.isSome()) { |
| return error.get(); |
| } else { |
| return roles; |
| } |
| } |
| |
| |
| // TODO(haosdent): Pull this out into `stout` and make it satisfy all |
| // OS/locale constraints. |
| // \x09 is horizontal tab (whitespace); |
| // \x0a is line feed (whitespace); |
| // \x0b is vertical tab (whitespace); |
| // \x0c is form feed (whitespace); |
| // \x0d is carriage return (whitespace); |
| // \x20 is space (whitespace); |
| // \x2f is slash ('/'); |
| // \x7f is backspace (del); |
| static const string* INVALID_CHARACTERS = |
| new string("\x09\x0a\x0b\x0c\x0d\x20\x2f\x7f"); |
| |
| |
| Option<Error> validate(const string& role) |
| { |
| // We check * explicitly first as a performance improvement. |
| static const string* star = new string("*"); |
| if (role == *star) { |
| return None(); |
| } |
| |
| if (role.empty()) { |
| return Error("Empty role name is invalid"); |
| } |
| |
| static const string* dot = new string("."); |
| static const string* dotdot = new string(".."); |
| if (role == *dot) { |
| return Error("Role name '.' is invalid"); |
| } else if (role == *dotdot) { |
| return Error("Role name '..' is invalid"); |
| } else if (strings::startsWith(role, '-')) { |
| return Error("Role name '" + role + "' is invalid " |
| "because it starts with a dash"); |
| } |
| |
| if (role.find_first_of(*INVALID_CHARACTERS) != string::npos) { |
| return Error("Role name '" + role + "' is invalid " |
| "because it contains slash, backspace or whitespace"); |
| } |
| |
| return None(); |
| } |
| |
| |
| Option<Error> validate(const vector<string>& roles) |
| { |
| foreach (const string& role, roles) { |
| Option<Error> error = validate(role); |
| if (error.isSome()) { |
| return error.get(); |
| } |
| } |
| |
| return None(); |
| } |
| |
| } // namespace roles { |
| } // namespace mesos { |