| /* |
| * Copyright 2011 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. |
| */ |
| |
| // Author: morlovich@google.com (Maksim Orlovich) |
| // |
| // Contains MockTimeCache, which lets one inject MockTimer-simulated |
| // delays before callback invocations of a cache object, as well as |
| // MockTimeCache::Callback, which chains to a passed-in callback to actually |
| // implement the delay. |
| |
| #include "pagespeed/kernel/cache/mock_time_cache.h" |
| |
| #include "pagespeed/kernel/base/function.h" |
| #include "pagespeed/kernel/base/shared_string.h" |
| #include "pagespeed/kernel/base/timer.h" |
| #include "pagespeed/kernel/thread/scheduler.h" |
| |
| namespace net_instaweb { |
| |
| // This calls a passed-in callback with a mock time delay, forwarding |
| // on lookup results. |
| class MockTimeCache::DelayCallback : public CacheInterface::Callback { |
| public: |
| DelayCallback(MockTimeCache* parent, Callback* orig_callback) |
| : parent_(parent), orig_callback_(orig_callback) {} |
| |
| virtual ~DelayCallback() {} |
| |
| virtual bool ValidateCandidate(const GoogleString& key, KeyState state) { |
| *orig_callback_->value() = *value(); |
| return orig_callback_->DelegatedValidateCandidate(key, state); |
| } |
| |
| virtual void Done(KeyState state) { |
| Scheduler* scheduler = parent_->scheduler(); |
| int64 wakeup_time_us = scheduler->timer()->NowUs() + parent_->delay_us(); |
| scheduler->AddAlarmAtUs( |
| wakeup_time_us, |
| new MemberFunction1<CacheInterface::Callback, CacheInterface::KeyState>( |
| &CacheInterface::Callback::DelegatedDone, orig_callback_, state)); |
| delete this; |
| } |
| |
| private: |
| MockTimeCache* parent_; |
| Callback* orig_callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DelayCallback); |
| }; |
| |
| MockTimeCache::MockTimeCache(Scheduler* scheduler, CacheInterface* cache) |
| : scheduler_(scheduler), |
| cache_(cache), |
| delay_us_(0) { |
| } |
| |
| MockTimeCache::~MockTimeCache() {} |
| |
| GoogleString MockTimeCache::FormatName(StringPiece name) { |
| return StrCat("MockTimeCache(", name, ")"); |
| } |
| |
| void MockTimeCache::Get(const GoogleString& key, Callback* callback) { |
| if (delay_us_ == 0) { |
| cache_->Get(key, callback); |
| } else { |
| cache_->Get(key, new DelayCallback(this, callback)); |
| } |
| } |
| |
| void MockTimeCache::Put(const GoogleString& key, SharedString* value) { |
| cache_->Put(key, value); |
| } |
| |
| void MockTimeCache::Delete(const GoogleString& key) { |
| cache_->Delete(key); |
| } |
| |
| } // namespace net_instaweb |