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Unified Diff: net/url_request/url_request_throttler_manager.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/url_request/url_request_throttler_manager.h
diff --git a/net/url_request/url_request_throttler_manager.h b/net/url_request/url_request_throttler_manager.h
deleted file mode 100644
index ee2f2212799342f92e3b0c031f0d360da7c8b3fc..0000000000000000000000000000000000000000
--- a/net/url_request/url_request_throttler_manager.h
+++ /dev/null
@@ -1,166 +0,0 @@
-// Copyright (c) 2012 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.
-
-#ifndef NET_URL_REQUEST_URL_REQUEST_THROTTLER_MANAGER_H_
-#define NET_URL_REQUEST_URL_REQUEST_THROTTLER_MANAGER_H_
-
-#include <map>
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/threading/platform_thread.h"
-#include "net/base/net_export.h"
-#include "net/base/network_change_notifier.h"
-#include "net/url_request/url_request_throttler_entry.h"
-#include "url/gurl.h"
-
-namespace net {
-
-class BoundNetLog;
-class NetLog;
-
-// Class that registers URL request throttler entries for URLs being accessed
-// in order to supervise traffic. URL requests for HTTP contents should
-// register their URLs in this manager on each request.
-//
-// URLRequestThrottlerManager maintains a map of URL IDs to URL request
-// throttler entries. It creates URL request throttler entries when new URLs
-// are registered, and does garbage collection from time to time in order to
-// clean out outdated entries. URL ID consists of lowercased scheme, host, port
-// and path. All URLs converted to the same ID will share the same entry.
-class NET_EXPORT URLRequestThrottlerManager
- : NON_EXPORTED_BASE(public base::NonThreadSafe),
- public NetworkChangeNotifier::IPAddressObserver,
- public NetworkChangeNotifier::ConnectionTypeObserver {
- public:
- URLRequestThrottlerManager();
- ~URLRequestThrottlerManager() override;
-
- // Must be called for every request, returns the URL request throttler entry
- // associated with the URL. The caller must inform this entry of some events.
- // Please refer to url_request_throttler_entry_interface.h for further
- // informations.
- scoped_refptr<URLRequestThrottlerEntryInterface> RegisterRequestUrl(
- const GURL& url);
-
- // Adds the given host to a list of sites for which exponential back-off
- // throttling will be disabled. Subdomains are not included, so they
- // must be added separately.
- void AddToOptOutList(const std::string& host);
-
- // Registers a new entry in this service and overrides the existing entry (if
- // any) for the URL. The service will hold a reference to the entry.
- // It is only used by unit tests.
- void OverrideEntryForTests(const GURL& url, URLRequestThrottlerEntry* entry);
-
- // Explicitly erases an entry.
- // This is useful to remove those entries which have got infinite lifetime and
- // thus won't be garbage collected.
- // It is only used by unit tests.
- void EraseEntryForTests(const GURL& url);
-
- // Turns threading model verification on or off. Any code that correctly
- // uses the network stack should preferably call this function to enable
- // verification of correct adherence to the network stack threading model.
- void set_enable_thread_checks(bool enable);
- bool enable_thread_checks() const;
-
- // Whether throttling is enabled or not.
- void set_enforce_throttling(bool enforce);
- bool enforce_throttling();
-
- // Sets the NetLog instance to use.
- void set_net_log(NetLog* net_log);
- NetLog* net_log() const;
-
- // IPAddressObserver interface.
- void OnIPAddressChanged() override;
-
- // ConnectionTypeObserver interface.
- void OnConnectionTypeChanged(
- NetworkChangeNotifier::ConnectionType type) override;
-
- // Method that allows us to transform a URL into an ID that can be used in our
- // map. Resulting IDs will be lowercase and consist of the scheme, host, port
- // and path (without query string, fragment, etc.).
- // If the URL is invalid, the invalid spec will be returned, without any
- // transformation.
- std::string GetIdFromUrl(const GURL& url) const;
-
- // Method that ensures the map gets cleaned from time to time. The period at
- // which garbage collecting happens is adjustable with the
- // kRequestBetweenCollecting constant.
- void GarbageCollectEntriesIfNecessary();
-
- // Method that does the actual work of garbage collecting.
- void GarbageCollectEntries();
-
- // When we switch from online to offline or change IP addresses, we
- // clear all back-off history. This is a precaution in case the change in
- // online state now lets us communicate without error with servers that
- // we were previously getting 500 or 503 responses from (perhaps the
- // responses are from a badly-written proxy that should have returned a
- // 502 or 504 because it's upstream connection was down or it had no route
- // to the server).
- void OnNetworkChange();
-
- // Used by tests.
- int GetNumberOfEntriesForTests() const { return url_entries_.size(); }
-
- private:
- // From each URL we generate an ID composed of the scheme, host, port and path
- // that allows us to uniquely map an entry to it.
- typedef std::map<std::string, scoped_refptr<URLRequestThrottlerEntry> >
- UrlEntryMap;
-
- // We maintain a set of hosts that have opted out of exponential
- // back-off throttling.
- typedef std::set<std::string> OptOutHosts;
-
- // Maximum number of entries that we are willing to collect in our map.
- static const unsigned int kMaximumNumberOfEntries;
- // Number of requests that will be made between garbage collection.
- static const unsigned int kRequestsBetweenCollecting;
-
- // Map that contains a list of URL ID and their matching
- // URLRequestThrottlerEntry.
- UrlEntryMap url_entries_;
-
- // Set of hosts that have opted out.
- OptOutHosts opt_out_hosts_;
-
- // This keeps track of how many requests have been made. Used with
- // GarbageCollectEntries.
- unsigned int requests_since_last_gc_;
-
- // Valid after construction.
- GURL::Replacements url_id_replacements_;
-
- // Certain tests do not obey the net component's threading policy, so we
- // keep track of whether we're being used by tests, and turn off certain
- // checks.
- //
- // TODO(joi): See if we can fix the offending unit tests and remove this
- // workaround.
- bool enable_thread_checks_;
-
- // Initially false, switches to true once we have logged because of back-off
- // being disabled for localhost.
- bool logged_for_localhost_disabled_;
-
- // NetLog to use, if configured.
- BoundNetLog net_log_;
-
- // Valid once we've registered for network notifications.
- base::PlatformThreadId registered_from_thread_;
-
- DISALLOW_COPY_AND_ASSIGN(URLRequestThrottlerManager);
-};
-
-} // namespace net
-
-#endif // NET_URL_REQUEST_URL_REQUEST_THROTTLER_MANAGER_H_
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