diff options
Diffstat (limited to 'net/http/mock_http_cache.cc')
| -rw-r--r-- | net/http/mock_http_cache.cc | 613 |
1 files changed, 613 insertions, 0 deletions
diff --git a/net/http/mock_http_cache.cc b/net/http/mock_http_cache.cc new file mode 100644 index 0000000..181e104 --- /dev/null +++ b/net/http/mock_http_cache.cc @@ -0,0 +1,613 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "net/http/mock_http_cache.h" + +#include "base/bind.h" +#include "base/message_loop.h" +#include "net/base/net_errors.h" +#include "testing/gtest/include/gtest/gtest.h" + +namespace { + +int GetTestModeForEntry(const std::string& key) { + // 'key' is prefixed with an identifier if it corresponds to a cached POST. + // Skip past that to locate the actual URL. + // + // TODO(darin): It breaks the abstraction a bit that we assume 'key' is an + // URL corresponding to a registered MockTransaction. It would be good to + // have another way to access the test_mode. + GURL url; + if (isdigit(key[0])) { + size_t slash = key.find('/'); + DCHECK(slash != std::string::npos); + url = GURL(key.substr(slash + 1)); + } else { + url = GURL(key); + } + const MockTransaction* t = FindMockTransaction(url); + DCHECK(t); + return t->test_mode; +} + +// We can override the test mode for a given operation by setting this global +// variable. +int g_test_mode = 0; + +} // namespace + +//----------------------------------------------------------------------------- + +struct MockDiskEntry::CallbackInfo { + scoped_refptr<MockDiskEntry> entry; + net::OldCompletionCallback* callback; + int result; +}; + +MockDiskEntry::MockDiskEntry() + : test_mode_(0), doomed_(false), sparse_(false), + fail_requests_(false), busy_(false), delayed_(false) { +} + +MockDiskEntry::MockDiskEntry(const std::string& key) + : key_(key), doomed_(false), sparse_(false), + fail_requests_(false), busy_(false), delayed_(false) { + test_mode_ = GetTestModeForEntry(key); +} + +void MockDiskEntry::Doom() { + doomed_ = true; +} + +void MockDiskEntry::Close() { + Release(); +} + +std::string MockDiskEntry::GetKey() const { + if (fail_requests_) + return std::string(); + return key_; +} + +base::Time MockDiskEntry::GetLastUsed() const { + return base::Time::FromInternalValue(0); +} + +base::Time MockDiskEntry::GetLastModified() const { + return base::Time::FromInternalValue(0); +} + +int32 MockDiskEntry::GetDataSize(int index) const { + DCHECK(index >= 0 && index < kNumCacheEntryDataIndices); + return static_cast<int32>(data_[index].size()); +} + +int MockDiskEntry::ReadData(int index, int offset, net::IOBuffer* buf, + int buf_len, net::OldCompletionCallback* callback) { + DCHECK(index >= 0 && index < kNumCacheEntryDataIndices); + DCHECK(callback); + + if (fail_requests_) + return net::ERR_CACHE_READ_FAILURE; + + if (offset < 0 || offset > static_cast<int>(data_[index].size())) + return net::ERR_FAILED; + if (static_cast<size_t>(offset) == data_[index].size()) + return 0; + + int num = std::min(buf_len, static_cast<int>(data_[index].size()) - offset); + memcpy(buf->data(), &data_[index][offset], num); + + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_READ) + return num; + + CallbackLater(callback, num); + return net::ERR_IO_PENDING; +} + +int MockDiskEntry::WriteData(int index, int offset, net::IOBuffer* buf, + int buf_len, net::OldCompletionCallback* callback, + bool truncate) { + DCHECK(index >= 0 && index < kNumCacheEntryDataIndices); + DCHECK(callback); + DCHECK(truncate); + + if (fail_requests_) { + CallbackLater(callback, net::ERR_CACHE_READ_FAILURE); + return net::ERR_IO_PENDING; + } + + if (offset < 0 || offset > static_cast<int>(data_[index].size())) + return net::ERR_FAILED; + + data_[index].resize(offset + buf_len); + if (buf_len) + memcpy(&data_[index][offset], buf->data(), buf_len); + + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_WRITE) + return buf_len; + + CallbackLater(callback, buf_len); + return net::ERR_IO_PENDING; +} + +int MockDiskEntry::ReadSparseData(int64 offset, net::IOBuffer* buf, int buf_len, + net::OldCompletionCallback* callback) { + DCHECK(callback); + if (!sparse_ || busy_) + return net::ERR_CACHE_OPERATION_NOT_SUPPORTED; + if (offset < 0) + return net::ERR_FAILED; + + if (fail_requests_) + return net::ERR_CACHE_READ_FAILURE; + + DCHECK(offset < kint32max); + int real_offset = static_cast<int>(offset); + if (!buf_len) + return 0; + + int num = std::min(static_cast<int>(data_[1].size()) - real_offset, + buf_len); + memcpy(buf->data(), &data_[1][real_offset], num); + + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_READ) + return num; + + CallbackLater(callback, num); + busy_ = true; + delayed_ = false; + return net::ERR_IO_PENDING; +} + +int MockDiskEntry::WriteSparseData(int64 offset, net::IOBuffer* buf, + int buf_len, + net::OldCompletionCallback* callback) { + DCHECK(callback); + if (busy_) + return net::ERR_CACHE_OPERATION_NOT_SUPPORTED; + if (!sparse_) { + if (data_[1].size()) + return net::ERR_CACHE_OPERATION_NOT_SUPPORTED; + sparse_ = true; + } + if (offset < 0) + return net::ERR_FAILED; + if (!buf_len) + return 0; + + if (fail_requests_) + return net::ERR_CACHE_READ_FAILURE; + + DCHECK(offset < kint32max); + int real_offset = static_cast<int>(offset); + + if (static_cast<int>(data_[1].size()) < real_offset + buf_len) + data_[1].resize(real_offset + buf_len); + + memcpy(&data_[1][real_offset], buf->data(), buf_len); + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_WRITE) + return buf_len; + + CallbackLater(callback, buf_len); + return net::ERR_IO_PENDING; +} + +int MockDiskEntry::GetAvailableRange(int64 offset, int len, int64* start, + net::OldCompletionCallback* callback) { + DCHECK(callback); + if (!sparse_ || busy_) + return net::ERR_CACHE_OPERATION_NOT_SUPPORTED; + if (offset < 0) + return net::ERR_FAILED; + + if (fail_requests_) + return net::ERR_CACHE_READ_FAILURE; + + *start = offset; + DCHECK(offset < kint32max); + int real_offset = static_cast<int>(offset); + if (static_cast<int>(data_[1].size()) < real_offset) + return 0; + + int num = std::min(static_cast<int>(data_[1].size()) - real_offset, len); + int count = 0; + for (; num > 0; num--, real_offset++) { + if (!count) { + if (data_[1][real_offset]) { + count++; + *start = real_offset; + } + } else { + if (!data_[1][real_offset]) + break; + count++; + } + } + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_WRITE) + return count; + + CallbackLater(callback, count); + return net::ERR_IO_PENDING; +} + +bool MockDiskEntry::CouldBeSparse() const { + return sparse_; +} + +void MockDiskEntry::CancelSparseIO() { + cancel_ = true; +} + +int MockDiskEntry::ReadyForSparseIO(net::OldCompletionCallback* callback) { + if (!cancel_) + return net::OK; + + cancel_ = false; + DCHECK(callback); + if (MockHttpCache::GetTestMode(test_mode_) & TEST_MODE_SYNC_CACHE_READ) + return net::OK; + + // The pending operation is already in the message loop (and hopefuly + // already in the second pass). Just notify the caller that it finished. + CallbackLater(callback, 0); + return net::ERR_IO_PENDING; +} + +// If |value| is true, don't deliver any completion callbacks until called +// again with |value| set to false. Caution: remember to enable callbacks +// again or all subsequent tests will fail. +// Static. +void MockDiskEntry::IgnoreCallbacks(bool value) { + if (ignore_callbacks_ == value) + return; + ignore_callbacks_ = value; + if (!value) + StoreAndDeliverCallbacks(false, NULL, NULL, 0); +} + +MockDiskEntry::~MockDiskEntry() { +} + +// Unlike the callbacks for MockHttpTransaction, we want this one to run even +// if the consumer called Close on the MockDiskEntry. We achieve that by +// leveraging the fact that this class is reference counted. +void MockDiskEntry::CallbackLater(net::OldCompletionCallback* callback, + int result) { + if (ignore_callbacks_) + return StoreAndDeliverCallbacks(true, this, callback, result); + MessageLoop::current()->PostTask(FROM_HERE, base::Bind( + &MockDiskEntry::RunCallback, this, callback, result)); +} + +void MockDiskEntry::RunCallback(net::OldCompletionCallback* callback, int result) { + if (busy_) { + // This is kind of hacky, but controlling the behavior of just this entry + // from a test is sort of complicated. What we really want to do is + // delay the delivery of a sparse IO operation a little more so that the + // request start operation (async) will finish without seeing the end of + // this operation (already posted to the message loop)... and without + // just delaying for n mS (which may cause trouble with slow bots). So + // we re-post this operation (all async sparse IO operations will take two + // trips trhough the message loop instead of one). + if (!delayed_) { + delayed_ = true; + return CallbackLater(callback, result); + } + } + busy_ = false; + callback->Run(result); +} + +// When |store| is true, stores the callback to be delivered later; otherwise +// delivers any callback previously stored. +// Static. +void MockDiskEntry::StoreAndDeliverCallbacks(bool store, MockDiskEntry* entry, + net::OldCompletionCallback* callback, + int result) { + static std::vector<CallbackInfo> callback_list; + if (store) { + CallbackInfo c = {entry, callback, result}; + callback_list.push_back(c); + } else { + for (size_t i = 0; i < callback_list.size(); i++) { + CallbackInfo& c = callback_list[i]; + c.entry->CallbackLater(c.callback, c.result); + } + callback_list.clear(); + } +} + +// Statics. +bool MockDiskEntry::cancel_ = false; +bool MockDiskEntry::ignore_callbacks_ = false; + +//----------------------------------------------------------------------------- + +class MockDiskCache::CallbackRunner : public Task { + public: + CallbackRunner(net::OldCompletionCallback* callback, int result) + : callback_(callback), result_(result) {} + virtual void Run() { + callback_->Run(result_); + } + + private: + net::OldCompletionCallback* callback_; + int result_; + DISALLOW_COPY_AND_ASSIGN(CallbackRunner); +}; + +MockDiskCache::MockDiskCache() + : open_count_(0), create_count_(0), fail_requests_(false), + soft_failures_(false) { +} + +MockDiskCache::~MockDiskCache() { + ReleaseAll(); +} + +int32 MockDiskCache::GetEntryCount() const { + return static_cast<int32>(entries_.size()); +} + +int MockDiskCache::OpenEntry(const std::string& key, disk_cache::Entry** entry, + net::OldCompletionCallback* callback) { + DCHECK(callback); + if (fail_requests_) + return net::ERR_CACHE_OPEN_FAILURE; + + EntryMap::iterator it = entries_.find(key); + if (it == entries_.end()) + return net::ERR_CACHE_OPEN_FAILURE; + + if (it->second->is_doomed()) { + it->second->Release(); + entries_.erase(it); + return net::ERR_CACHE_OPEN_FAILURE; + } + + open_count_++; + + it->second->AddRef(); + *entry = it->second; + + if (soft_failures_) + it->second->set_fail_requests(); + + if (GetTestModeForEntry(key) & TEST_MODE_SYNC_CACHE_START) + return net::OK; + + CallbackLater(callback, net::OK); + return net::ERR_IO_PENDING; +} + +int MockDiskCache::CreateEntry(const std::string& key, + disk_cache::Entry** entry, + net::OldCompletionCallback* callback) { + DCHECK(callback); + if (fail_requests_) + return net::ERR_CACHE_CREATE_FAILURE; + + EntryMap::iterator it = entries_.find(key); + if (it != entries_.end()) { + DCHECK(it->second->is_doomed()); + it->second->Release(); + entries_.erase(it); + } + + create_count_++; + + MockDiskEntry* new_entry = new MockDiskEntry(key); + + new_entry->AddRef(); + entries_[key] = new_entry; + + new_entry->AddRef(); + *entry = new_entry; + + if (soft_failures_) + new_entry->set_fail_requests(); + + if (GetTestModeForEntry(key) & TEST_MODE_SYNC_CACHE_START) + return net::OK; + + CallbackLater(callback, net::OK); + return net::ERR_IO_PENDING; +} + +int MockDiskCache::DoomEntry(const std::string& key, + net::OldCompletionCallback* callback) { + DCHECK(callback); + EntryMap::iterator it = entries_.find(key); + if (it != entries_.end()) { + it->second->Release(); + entries_.erase(it); + } + + if (GetTestModeForEntry(key) & TEST_MODE_SYNC_CACHE_START) + return net::OK; + + CallbackLater(callback, net::OK); + return net::ERR_IO_PENDING; +} + +int MockDiskCache::DoomAllEntries(net::OldCompletionCallback* callback) { + return net::ERR_NOT_IMPLEMENTED; +} + +int MockDiskCache::DoomEntriesBetween(const base::Time initial_time, + const base::Time end_time, + net::OldCompletionCallback* callback) { + return net::ERR_NOT_IMPLEMENTED; +} + +int MockDiskCache::DoomEntriesSince(const base::Time initial_time, + net::OldCompletionCallback* callback) { + return net::ERR_NOT_IMPLEMENTED; +} + +int MockDiskCache::OpenNextEntry(void** iter, disk_cache::Entry** next_entry, + net::OldCompletionCallback* callback) { + return net::ERR_NOT_IMPLEMENTED; +} + +void MockDiskCache::EndEnumeration(void** iter) { +} + +void MockDiskCache::GetStats( + std::vector<std::pair<std::string, std::string> >* stats) { +} + +void MockDiskCache::OnExternalCacheHit(const std::string& key) { +} + +void MockDiskCache::ReleaseAll() { + EntryMap::iterator it = entries_.begin(); + for (; it != entries_.end(); ++it) + it->second->Release(); + entries_.clear(); +} + +void MockDiskCache::CallbackLater(net::OldCompletionCallback* callback, + int result) { + MessageLoop::current()->PostTask(FROM_HERE, + new CallbackRunner(callback, result)); +} + +//----------------------------------------------------------------------------- + +int MockBackendFactory::CreateBackend(net::NetLog* net_log, + disk_cache::Backend** backend, + net::OldCompletionCallback* callback) { + *backend = new MockDiskCache(); + return net::OK; +} + +//----------------------------------------------------------------------------- + +MockHttpCache::MockHttpCache() + : http_cache_(new MockNetworkLayer(), NULL, new MockBackendFactory()) { +} + +MockHttpCache::MockHttpCache(net::HttpCache::BackendFactory* disk_cache_factory) + : http_cache_(new MockNetworkLayer(), NULL, disk_cache_factory) { +} + +MockDiskCache* MockHttpCache::disk_cache() { + TestOldCompletionCallback cb; + disk_cache::Backend* backend; + int rv = http_cache_.GetBackend(&backend, &cb); + rv = cb.GetResult(rv); + return (rv == net::OK) ? static_cast<MockDiskCache*>(backend) : NULL; +} + +bool MockHttpCache::ReadResponseInfo(disk_cache::Entry* disk_entry, + net::HttpResponseInfo* response_info, + bool* response_truncated) { + int size = disk_entry->GetDataSize(0); + + TestOldCompletionCallback cb; + scoped_refptr<net::IOBuffer> buffer(new net::IOBuffer(size)); + int rv = disk_entry->ReadData(0, 0, buffer, size, &cb); + rv = cb.GetResult(rv); + EXPECT_EQ(size, rv); + + return net::HttpCache::ParseResponseInfo(buffer->data(), size, + response_info, + response_truncated); +} + +bool MockHttpCache::WriteResponseInfo( + disk_cache::Entry* disk_entry, const net::HttpResponseInfo* response_info, + bool skip_transient_headers, bool response_truncated) { + Pickle pickle; + response_info->Persist( + &pickle, skip_transient_headers, response_truncated); + + TestOldCompletionCallback cb; + scoped_refptr<net::WrappedIOBuffer> data(new net::WrappedIOBuffer( + reinterpret_cast<const char*>(pickle.data()))); + int len = static_cast<int>(pickle.size()); + + int rv = disk_entry->WriteData(0, 0, data, len, &cb, true); + rv = cb.GetResult(rv); + return (rv == len); +} + +bool MockHttpCache::OpenBackendEntry(const std::string& key, + disk_cache::Entry** entry) { + TestOldCompletionCallback cb; + int rv = disk_cache()->OpenEntry(key, entry, &cb); + return (cb.GetResult(rv) == net::OK); +} + +bool MockHttpCache::CreateBackendEntry(const std::string& key, + disk_cache::Entry** entry, + net::NetLog* net_log) { + TestOldCompletionCallback cb; + int rv = disk_cache()->CreateEntry(key, entry, &cb); + return (cb.GetResult(rv) == net::OK); +} + +// Static. +int MockHttpCache::GetTestMode(int test_mode) { + if (!g_test_mode) + return test_mode; + + return g_test_mode; +} + +// Static. +void MockHttpCache::SetTestMode(int test_mode) { + g_test_mode = test_mode; +} + +//----------------------------------------------------------------------------- + +int MockDiskCacheNoCB::CreateEntry(const std::string& key, + disk_cache::Entry** entry, + net::OldCompletionCallback* callback) { + return net::ERR_IO_PENDING; +} + +//----------------------------------------------------------------------------- + +int MockBackendNoCbFactory::CreateBackend(net::NetLog* net_log, + disk_cache::Backend** backend, + net::OldCompletionCallback* callback) { + *backend = new MockDiskCacheNoCB(); + return net::OK; +} + +//----------------------------------------------------------------------------- + +MockBlockingBackendFactory::MockBlockingBackendFactory() + : backend_(NULL), callback_(NULL), block_(true), fail_(false) { +} + +int MockBlockingBackendFactory::CreateBackend( + net::NetLog* net_log, disk_cache::Backend** backend, + net::OldCompletionCallback* callback) { + if (!block_) { + if (!fail_) + *backend = new MockDiskCache(); + return Result(); + } + + backend_ = backend; + callback_ = callback; + return net::ERR_IO_PENDING; +} + +void MockBlockingBackendFactory::FinishCreation() { + block_ = false; + if (callback_) { + if (!fail_) + *backend_ = new MockDiskCache(); + net::OldCompletionCallback* cb = callback_; + callback_ = NULL; + cb->Run(Result()); // This object can be deleted here. + } +} |