| // Copyright 2012 Google Inc. |
| // |
| // Licensed 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. |
| |
| // Validator for v2 protocol messages. |
| |
| #ifndef GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_ |
| #define GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_ |
| |
| #include "google/cacheinvalidation/impl/client-protocol-namespace-fix.h" |
| |
| namespace invalidation { |
| |
| class Logger; |
| |
| class TiclMessageValidator { |
| public: |
| TiclMessageValidator(Logger* logger) : logger_(logger) {} |
| |
| // Generic IsValid() method. Delegates to the private |Validate| helper |
| // method. |
| template<typename T> |
| bool IsValid(const T& message) { |
| bool result = true; |
| Validate(message, &result); |
| return result; |
| } |
| |
| private: |
| // Validates a message. For each type of message to be validated, there |
| // should be a specialization of this method. Instead of returning a boolean, |
| // the method stores |false| in |*result| if the message is invalid. Thus, |
| // the caller must initialize |*result| to |true|. Following this pattern |
| // allows the specific validation methods to be simpler (i.e., a method that |
| // accepts all messages has an empty body instead of having to return |true|). |
| template<typename T> |
| void Validate(const T& message, bool* result); |
| |
| private: |
| Logger* logger_; |
| }; |
| |
| } // namespace invalidation |
| |
| #endif // GOOGLE_CACHEINVALIDATION_IMPL_TICL_MESSAGE_VALIDATOR_H_ |