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148 lines
4.4 KiB
148 lines
4.4 KiB
//
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// Copyright (C) 2009 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include "update_engine/common/mock_http_fetcher.h"
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#include <algorithm>
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#include <base/bind.h>
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#include <base/logging.h>
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#include <base/strings/string_util.h>
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#include <base/time/time.h>
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#include <brillo/message_loops/message_loop.h>
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#include <gtest/gtest.h>
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// This is a mock implementation of HttpFetcher which is useful for testing.
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using brillo::MessageLoop;
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using std::min;
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namespace chromeos_update_engine {
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MockHttpFetcher::~MockHttpFetcher() {
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CHECK(timeout_id_ == MessageLoop::kTaskIdNull)
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<< "Call TerminateTransfer() before dtor.";
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}
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void MockHttpFetcher::BeginTransfer(const std::string& url) {
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EXPECT_FALSE(never_use_);
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if (fail_transfer_ || data_.empty()) {
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// No data to send, just notify of completion..
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SignalTransferComplete();
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return;
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}
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if (sent_offset_ < data_.size())
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SendData(true);
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}
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void MockHttpFetcher::SendData(bool skip_delivery) {
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if (fail_transfer_ || sent_offset_ == data_.size()) {
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SignalTransferComplete();
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return;
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}
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if (paused_) {
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// If we're paused, we should return so no callback is scheduled.
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return;
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}
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// Setup timeout callback even if the transfer is about to be completed in
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// order to get a call to |TransferComplete|.
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if (timeout_id_ == MessageLoop::kTaskIdNull && delay_) {
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CHECK(MessageLoop::current());
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timeout_id_ = MessageLoop::current()->PostDelayedTask(
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FROM_HERE,
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base::Bind(&MockHttpFetcher::TimeoutCallback, base::Unretained(this)),
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base::TimeDelta::FromMilliseconds(10));
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}
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if (!skip_delivery || !delay_) {
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const size_t chunk_size =
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min(kMockHttpFetcherChunkSize, data_.size() - sent_offset_);
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sent_offset_ += chunk_size;
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bytes_sent_ += chunk_size;
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CHECK(delegate_);
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delegate_->ReceivedBytes(
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this, &data_[sent_offset_ - chunk_size], chunk_size);
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}
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// We may get terminated and deleted right after |ReceivedBytes| call, so we
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// should not access any class member variable after this call.
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}
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void MockHttpFetcher::TimeoutCallback() {
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CHECK(!paused_);
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timeout_id_ = MessageLoop::kTaskIdNull;
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CHECK_LE(sent_offset_, data_.size());
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// Same here, we should not access any member variable after this call.
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SendData(false);
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}
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// If the transfer is in progress, aborts the transfer early.
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// The transfer cannot be resumed.
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void MockHttpFetcher::TerminateTransfer() {
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LOG(INFO) << "Terminating transfer.";
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// During testing, MessageLoop may or may not be available.
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// So don't call CancelTask() unless necessary.
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if (timeout_id_ != MessageLoop::kTaskIdNull) {
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MessageLoop::current()->CancelTask(timeout_id_);
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timeout_id_ = MessageLoop::kTaskIdNull;
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}
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if (delegate_) {
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delegate_->TransferTerminated(this);
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}
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}
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void MockHttpFetcher::SetHeader(const std::string& header_name,
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const std::string& header_value) {
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extra_headers_[base::ToLowerASCII(header_name)] = header_value;
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}
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std::string MockHttpFetcher::GetHeader(const std::string& header_name) const {
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const auto it = extra_headers_.find(base::ToLowerASCII(header_name));
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if (it == extra_headers_.end())
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return "";
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return it->second;
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}
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void MockHttpFetcher::Pause() {
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CHECK(!paused_);
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paused_ = true;
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MessageLoop::current()->CancelTask(timeout_id_);
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timeout_id_ = MessageLoop::kTaskIdNull;
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}
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void MockHttpFetcher::Unpause() {
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CHECK(paused_) << "You must pause before unpause.";
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paused_ = false;
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SendData(false);
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}
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void MockHttpFetcher::FailTransfer(int http_response_code) {
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fail_transfer_ = true;
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http_response_code_ = http_response_code;
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}
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void MockHttpFetcher::SignalTransferComplete() {
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// If the transfer has been failed, the HTTP response code should be set
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// already.
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if (!fail_transfer_) {
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http_response_code_ = 200;
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}
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delegate_->TransferComplete(this, !fail_transfer_);
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}
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} // namespace chromeos_update_engine
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