rspangler@google.com | 49fdf18 | 2009-10-10 00:57:34 +0000 | [diff] [blame^] | 1 | // Copyright (c) 2009 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "glog/logging.h" |
| 6 | #include "update_engine/mock_http_fetcher.h" |
| 7 | |
| 8 | // This is a mac implementation of HttpFetcher which is useful for testing. |
| 9 | |
| 10 | namespace chromeos_update_engine { |
| 11 | |
| 12 | MockHttpFetcher::~MockHttpFetcher() { |
| 13 | CHECK(!timeout_source_) << "Call TerminateTransfer() before dtor."; |
| 14 | } |
| 15 | |
| 16 | void MockHttpFetcher::BeginTransfer(const std::string& url) { |
| 17 | if (sent_size_ < data_.size()) |
| 18 | SendData(true); |
| 19 | } |
| 20 | |
| 21 | // Returns false on one condition: If timeout_source_ was already set |
| 22 | // and it needs to be deleted by the caller. If timeout_source_ is NULL |
| 23 | // when this function is called, this function will always return true. |
| 24 | bool MockHttpFetcher::SendData(bool skip_delivery) { |
| 25 | CHECK_LT(sent_size_, data_.size()); |
| 26 | if (!skip_delivery) { |
| 27 | const size_t chunk_size = min(kMockHttpFetcherChunkSize, |
| 28 | data_.size() - sent_size_); |
| 29 | CHECK(delegate_); |
| 30 | delegate_->ReceivedBytes(this, &data_[sent_size_], chunk_size); |
| 31 | sent_size_ += chunk_size; |
| 32 | CHECK_LE(sent_size_, data_.size()); |
| 33 | if (sent_size_ == data_.size()) { |
| 34 | // We've sent all the data. notify of success |
| 35 | delegate_->TransferComplete(this, true); |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | if (paused_) { |
| 40 | // If we're paused, we should return true if timeout_source_ is set, |
| 41 | // since we need the caller to delete it. |
| 42 | return timeout_source_; |
| 43 | } |
| 44 | |
| 45 | if (timeout_source_) { |
| 46 | // we still need a timeout if there's more data to send |
| 47 | return sent_size_ < data_.size(); |
| 48 | } else if (sent_size_ < data_.size()) { |
| 49 | // we don't have a timeout source and we need one |
| 50 | timeout_source_ = g_timeout_source_new(10); |
| 51 | CHECK(timeout_source_); |
| 52 | g_source_set_callback(timeout_source_, StaticTimeoutCallback, this, |
| 53 | NULL); |
| 54 | timout_tag_ = g_source_attach(timeout_source_, NULL); |
| 55 | } |
| 56 | return true; |
| 57 | } |
| 58 | |
| 59 | bool MockHttpFetcher::TimeoutCallback() { |
| 60 | CHECK(!paused_); |
| 61 | bool ret = SendData(false); |
| 62 | if (false == ret) { |
| 63 | timeout_source_ = NULL; |
| 64 | } |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | // If the transfer is in progress, aborts the transfer early. |
| 69 | // The transfer cannot be resumed. |
| 70 | void MockHttpFetcher::TerminateTransfer() { |
| 71 | sent_size_ = data_.size(); |
| 72 | // kill any timeout |
| 73 | if (timeout_source_) { |
| 74 | g_source_remove(timout_tag_); |
| 75 | g_source_destroy(timeout_source_); |
| 76 | timeout_source_ = NULL; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | void MockHttpFetcher::Pause() { |
| 81 | CHECK(!paused_); |
| 82 | paused_ = true; |
| 83 | if (timeout_source_) { |
| 84 | g_source_remove(timout_tag_); |
| 85 | g_source_destroy(timeout_source_); |
| 86 | timeout_source_ = NULL; |
| 87 | } |
| 88 | |
| 89 | } |
| 90 | |
| 91 | void MockHttpFetcher::Unpause() { |
| 92 | CHECK(paused_) << "You must pause before unpause."; |
| 93 | paused_ = false; |
| 94 | if (sent_size_ < data_.size()) { |
| 95 | SendData(false); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | } // namespace chromeos_update_engine |