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103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/http/http_cache_lookup_manager.h"
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#include <memory>
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#include "base/values.h"
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#include "net/base/load_flags.h"
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namespace net {
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// Returns parameters associated with the start of a server push lookup
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// transaction.
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std::unique_ptr<base::Value> NetLogPushLookupTransactionCallback(
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const NetLogSource& net_log,
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const ServerPushDelegate::ServerPushHelper* push_helper,
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NetLogCaptureMode /* capture_mode */) {
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std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue());
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net_log.AddToEventParameters(dict.get());
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dict->SetString("push_url", push_helper->GetURL().possibly_invalid_spec());
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return std::move(dict);
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}
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HttpCacheLookupManager::LookupTransaction::LookupTransaction(
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std::unique_ptr<ServerPushHelper> server_push_helper,
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NetLog* net_log)
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: push_helper_(std::move(server_push_helper)),
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request_(new HttpRequestInfo()),
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transaction_(nullptr),
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net_log_(NetLogWithSource::Make(
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net_log,
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NetLogSourceType::SERVER_PUSH_LOOKUP_TRANSACTION)) {}
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HttpCacheLookupManager::LookupTransaction::~LookupTransaction() = default;
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int HttpCacheLookupManager::LookupTransaction::StartLookup(
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HttpCache* cache,
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CompletionOnceCallback callback,
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const NetLogWithSource& session_net_log) {
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net_log_.BeginEvent(NetLogEventType::SERVER_PUSH_LOOKUP_TRANSACTION,
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base::Bind(&NetLogPushLookupTransactionCallback,
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session_net_log.source(), push_helper_.get()));
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request_->url = push_helper_->GetURL();
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request_->method = "GET";
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request_->load_flags = LOAD_ONLY_FROM_CACHE | LOAD_SKIP_CACHE_VALIDATION;
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cache->CreateTransaction(DEFAULT_PRIORITY, &transaction_);
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return transaction_->Start(request_.get(), std::move(callback), net_log_);
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}
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void HttpCacheLookupManager::LookupTransaction::OnLookupComplete(int result) {
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if (result == OK) {
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DCHECK(push_helper_.get());
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push_helper_->Cancel();
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}
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net_log_.EndEventWithNetErrorCode(
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NetLogEventType::SERVER_PUSH_LOOKUP_TRANSACTION, result);
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}
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HttpCacheLookupManager::HttpCacheLookupManager(HttpCache* http_cache)
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: http_cache_(http_cache), weak_factory_(this) {}
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HttpCacheLookupManager::~HttpCacheLookupManager() = default;
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void HttpCacheLookupManager::OnPush(
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std::unique_ptr<ServerPushHelper> push_helper,
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const NetLogWithSource& session_net_log) {
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GURL pushed_url = push_helper->GetURL();
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// There's a pending lookup transaction sent over already.
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if (base::ContainsKey(lookup_transactions_, pushed_url))
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return;
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auto lookup = std::make_unique<LookupTransaction>(std::move(push_helper),
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session_net_log.net_log());
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// TODO(zhongyi): add events in session net log to log the creation of
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// LookupTransaction.
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int rv = lookup->StartLookup(
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http_cache_, base::Bind(&HttpCacheLookupManager::OnLookupComplete,
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weak_factory_.GetWeakPtr(), pushed_url),
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session_net_log);
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if (rv == ERR_IO_PENDING) {
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lookup_transactions_[pushed_url] = std::move(lookup);
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} else {
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lookup->OnLookupComplete(rv);
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}
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}
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void HttpCacheLookupManager::OnLookupComplete(const GURL& url, int rv) {
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auto it = lookup_transactions_.find(url);
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DCHECK(it != lookup_transactions_.end());
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it->second->OnLookupComplete(rv);
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lookup_transactions_.erase(it);
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}
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} // namespace net
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