Move most of the component updater artifacts to update_client.

components/update_client/configurator.h

+// Copyright 2014 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 COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_
+#define COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_
+
+#include <string>
+#include <vector>
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+
+class GURL;
+
+namespace base {
+class SingleThreadTaskRunner;
+class SequencedTaskRunner;
+class Version;
+}
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+namespace update_client {
+
+class OutOfProcessPatcher;
+
+// Controls the component updater behavior.
+// TODO(sorin): this class will be split soon in two. One class controls
+// the behavior of the update client, and the other class controls the
+// behavior of the component updater.
+class Configurator {
+ public:
+  virtual ~Configurator() {}
+
+  // Delay in seconds from calling Start() to the first update check.
+  virtual int InitialDelay() const = 0;
+
+  // Delay in seconds to every subsequent update check. 0 means don't check.
+  // This function is a mutator for testing purposes.
+  virtual int NextCheckDelay() = 0;
+
+  // Delay in seconds from each task step. Used to smooth out CPU/IO usage.
+  virtual int StepDelay() const = 0;
+
+  // Delay in seconds between applying updates for different components, if
+  // several updates are available at a given time. This function is a mutator
+  // for testing purposes.
+  virtual int StepDelayMedium() = 0;
+
+  // Minimum delta time in seconds before checking again the same component.
+  virtual int MinimumReCheckWait() const = 0;
+
+  // Minimum delta time in seconds before an on-demand check is allowed
+  // for the same component.
+  virtual int OnDemandDelay() const = 0;
+
+  // The URLs for the update checks. The URLs are tried in order, the first one
+  // that succeeds wins.
+  virtual std::vector<GURL> UpdateUrl() const = 0;
+
+  // The URLs for pings. Returns an empty vector if and only if pings are
+  // disabled. Similarly, these URLs have a fall back behavior too.
+  virtual std::vector<GURL> PingUrl() const = 0;
+
+  // Version of the application. Used to compare the component manifests.
+  virtual base::Version GetBrowserVersion() const = 0;
+
+  // Returns the value we use for the "updaterchannel=" and "prodchannel="
+  // parameters. Possible return values include: "canary", "dev", "beta", and
+  // "stable".
+  virtual std::string GetChannel() const = 0;
+
+  // Returns the language for the present locale. Possible return values are
+  // standard tags for languages, such as "en", "en-US", "de", "fr", "af", etc.
+  virtual std::string GetLang() const = 0;
+
+  // Returns the OS's long name like "Windows", "Mac OS X", etc.
+  virtual std::string GetOSLongName() const = 0;
+
+  // Parameters added to each url request. It can be empty if none are needed.
+  // The return string must be safe for insertion as an attribute in an
+  // XML element.
+  virtual std::string ExtraRequestParams() const = 0;
+
+  // How big each update request can be. Don't go above 2000.
+  virtual size_t UrlSizeLimit() const = 0;
+
+  // The source of contexts for all the url requests.
+  virtual net::URLRequestContextGetter* RequestContext() const = 0;
+
+  // Returns a new out of process patcher. May be NULL for implementations
+  // that patch in-process.
+  virtual scoped_refptr<update_client::OutOfProcessPatcher>
+  CreateOutOfProcessPatcher() const = 0;
+
+  // True means that this client can handle delta updates.
+  virtual bool DeltasEnabled() const = 0;
+
+  // True means that the background downloader can be used for downloading
+  // non on-demand components.
+  virtual bool UseBackgroundDownloader() const = 0;
+
+  // Gets a task runner to a blocking pool of threads suitable for worker jobs.
+  virtual scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
+      const = 0;
+
+  // Gets a task runner for worker jobs guaranteed to run on a single thread.
+  // This thread must be capable of IO. On Windows, this thread must be
+  // initialized for use of COM objects.
+  virtual scoped_refptr<base::SingleThreadTaskRunner>
+  GetSingleThreadTaskRunner() const = 0;
+};
+
+}  // namespace update_client
+
+#endif  // COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_