Componentize ComponentUpdaterConfigurator

components/component_updater/configurator_impl.cc

 // 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.
 
-#include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
+#include "components/component_updater/configurator_impl.h"
 
 #include <algorithm>
-#include <string>
-#include <vector>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/version.h"
 #include "build/build_config.h"
-#include "chrome/browser/component_updater/component_patcher_operation_out_of_process.h"
-#include "chrome/browser/component_updater/component_updater_url_constants.h"
-#include "chrome/browser/update_client/chrome_update_query_params_delegate.h"
 #include "components/component_updater/component_updater_switches.h"
 #include "components/update_client/configurator.h"
 #include "components/version_info/version_info.h"
-#include "content/public/browser/browser_thread.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "url/gurl.h"
 
 #if defined(OS_WIN)
 #include "base/win/win_util.h"
 #endif  // OS_WIN
 
-using update_client::Configurator;
-using update_client::OutOfProcessPatcher;
-
 namespace component_updater {
 
 namespace {
-
 // Default time constants.
 const int kDelayOneMinute = 60;
 const int kDelayOneHour = kDelayOneMinute * 60;
 
 // Debug values you can pass to --component-updater=value1,value2.
 // Speed up component checking.
 const char kSwitchFastUpdate[] = "fast-update";
 
 // Add "testrequest=1" attribute to the update check request.
 const char kSwitchRequestParam[] = "test-request";
 
 // Disables pings. Pings are the requests sent to the update server that report
 // the success or the failure of component install or update attempts.
 extern const char kSwitchDisablePings[] = "disable-pings";
 
 // Sets the URL for updates.
 const char kSwitchUrlSource[] = "url-source";
 
 // Disables differential updates.
 const char kSwitchDisableDeltaUpdates[] = "disable-delta-updates";
 
+// The alternative URL for the v3 protocol service endpoint.
+const char kUpdaterAltUrl[] = "http://clients2.google.com/service/update2";
+
+// The default URL for the v3 protocol service endpoint. In some cases, the
+// component updater is allowed to fall back to and alternate URL source, if
+// the request to the default URL source fails.
+// The value of |kDefaultUrlSource| can be overridden with
+// --component-updater=url-source=someurl.
+const char kUpdaterDefaultUrl[] = "https://clients2.google.com/service/update2";
+
 #if defined(OS_WIN)
 // Disables background downloads.
 const char kSwitchDisableBackgroundDownloads[] = "disable-background-downloads";
 #endif  // defined(OS_WIN)
 
 // Returns true if and only if |test| is contained in |vec|.
 bool HasSwitchValue(const std::vector<std::string>& vec, const char* test) {
   if (vec.empty())
     return 0;
   return (std::find(vec.begin(), vec.end(), test) != vec.end());
@@ skipping 14 matching lines @@
 
 // If there is an element of |vec| of the form |test|=.*, returns the right-
 // hand side of that assignment. Otherwise, returns an empty string.
 // The right-hand side may contain additional '=' characters, allowing for
 // further nesting of switch arguments.
 std::string GetSwitchArgument(const std::vector<std::string>& vec,
                               const char* test) {
   if (vec.empty())
     return std::string();
   for (std::vector<std::string>::const_iterator it = vec.begin();
-       it != vec.end();
-       ++it) {
+       it != vec.end(); ++it) {
     const std::size_t found = it->find("=");
     if (found != std::string::npos) {
       if (it->substr(0, found) == test) {
         return it->substr(found + 1);
       }
     }
   }
   return std::string();
 }
 
-class ChromeConfigurator : public Configurator {
- public:
-  ChromeConfigurator(const base::CommandLine* cmdline,
-                     net::URLRequestContextGetter* url_request_getter);
+}  // namespace
 
-  int InitialDelay() const override;
-  int NextCheckDelay() const override;
-  int StepDelay() const override;
-  int OnDemandDelay() const override;
-  int UpdateDelay() const override;
-  std::vector<GURL> UpdateUrl() const override;
-  std::vector<GURL> PingUrl() const override;
-  base::Version GetBrowserVersion() const override;
-  std::string GetChannel() const override;
-  std::string GetLang() const override;
-  std::string GetOSLongName() const override;
-  std::string ExtraRequestParams() const override;
-  net::URLRequestContextGetter* RequestContext() const override;
-  scoped_refptr<OutOfProcessPatcher> CreateOutOfProcessPatcher() const override;
-  bool DeltasEnabled() const override;
-  bool UseBackgroundDownloader() const override;
-  scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
-      const override;
-  scoped_refptr<base::SingleThreadTaskRunner> GetSingleThreadTaskRunner()
-      const override;
-
- private:
-  friend class base::RefCountedThreadSafe<ChromeConfigurator>;
-
-  ~ChromeConfigurator() override {}
-
-  net::URLRequestContextGetter* url_request_getter_;
-  std::string extra_info_;
-  GURL url_source_override_;
-  bool fast_update_;
-  bool pings_enabled_;
-  bool deltas_enabled_;
-  bool background_downloads_enabled_;
-  bool fallback_to_alt_source_url_enabled_;
-};
-
-ChromeConfigurator::ChromeConfigurator(
+ConfiguratorImpl::ConfiguratorImpl(
     const base::CommandLine* cmdline,
     net::URLRequestContextGetter* url_request_getter)
     : url_request_getter_(url_request_getter),
       fast_update_(false),
       pings_enabled_(false),
       deltas_enabled_(false),
       background_downloads_enabled_(false),
       fallback_to_alt_source_url_enabled_(false) {
   // Parse comma-delimited debug flags.
   std::vector<std::string> switch_values = base::SplitString(
-      cmdline->GetSwitchValueASCII(switches::kComponentUpdater),
-      ",", base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
+      cmdline->GetSwitchValueASCII(switches::kComponentUpdater), ",",
+      base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
   fast_update_ = HasSwitchValue(switch_values, kSwitchFastUpdate);
   pings_enabled_ = !HasSwitchValue(switch_values, kSwitchDisablePings);
   deltas_enabled_ = !HasSwitchValue(switch_values, kSwitchDisableDeltaUpdates);
 
 #if defined(OS_WIN)
   background_downloads_enabled_ =
       !HasSwitchValue(switch_values, kSwitchDisableBackgroundDownloads);
 #else
   background_downloads_enabled_ = false;
 #endif
 
   const std::string switch_url_source =
       GetSwitchArgument(switch_values, kSwitchUrlSource);
   if (!switch_url_source.empty()) {
     url_source_override_ = GURL(switch_url_source);
     DCHECK(url_source_override_.is_valid());
   }
 
   if (HasSwitchValue(switch_values, kSwitchRequestParam))
     extra_info_ += "testrequest=\"1\"";
 
   fallback_to_alt_source_url_enabled_ = CanUseAltUrlSource();
 }
 
-int ChromeConfigurator::InitialDelay() const {
+ConfiguratorImpl::~ConfiguratorImpl() {}
+
+int ConfiguratorImpl::InitialDelay() const {
   return fast_update_ ? 10 : (6 * kDelayOneMinute);
 }
 
-int ChromeConfigurator::NextCheckDelay() const {
+int ConfiguratorImpl::NextCheckDelay() const {
   return fast_update_ ? 60 : (6 * kDelayOneHour);
 }
 
-int ChromeConfigurator::StepDelay() const {
+int ConfiguratorImpl::StepDelay() const {
   return fast_update_ ? 1 : 1;
 }
 
-int ChromeConfigurator::OnDemandDelay() const {
+int ConfiguratorImpl::OnDemandDelay() const {
   return fast_update_ ? 2 : (30 * kDelayOneMinute);
 }
 
-int ChromeConfigurator::UpdateDelay() const {
+int ConfiguratorImpl::UpdateDelay() const {
   return fast_update_ ? 10 : (15 * kDelayOneMinute);
 }
 
-std::vector<GURL> ChromeConfigurator::UpdateUrl() const {
+std::vector<GURL> ConfiguratorImpl::UpdateUrl() const {
   std::vector<GURL> urls;
   if (url_source_override_.is_valid()) {
     urls.push_back(GURL(url_source_override_));
   } else {
     urls.push_back(GURL(kUpdaterDefaultUrl));
     if (fallback_to_alt_source_url_enabled_) {
       urls.push_back(GURL(kUpdaterAltUrl));
     }
   }
   return urls;
 }
 
-std::vector<GURL> ChromeConfigurator::PingUrl() const {
+std::vector<GURL> ConfiguratorImpl::PingUrl() const {
   return pings_enabled_ ? UpdateUrl() : std::vector<GURL>();
 }
 
-base::Version ChromeConfigurator::GetBrowserVersion() const {
+base::Version ConfiguratorImpl::GetBrowserVersion() const {
   return base::Version(version_info::GetVersionNumber());
 }
 
-std::string ChromeConfigurator::GetChannel() const {
-  return ChromeUpdateQueryParamsDelegate::GetChannelString();
-}
-
-std::string ChromeConfigurator::GetLang() const {
-  return ChromeUpdateQueryParamsDelegate::GetLang();
-}
-
-std::string ChromeConfigurator::GetOSLongName() const {
+std::string ConfiguratorImpl::GetOSLongName() const {
   return version_info::GetOSType();
 }
 
-std::string ChromeConfigurator::ExtraRequestParams() const {
+std::string ConfiguratorImpl::ExtraRequestParams() const {
   return extra_info_;
 }
 
-net::URLRequestContextGetter* ChromeConfigurator::RequestContext() const {
+net::URLRequestContextGetter* ConfiguratorImpl::RequestContext() const {
   return url_request_getter_;
 }
 
-scoped_refptr<OutOfProcessPatcher>
-ChromeConfigurator::CreateOutOfProcessPatcher() const {
-  return make_scoped_refptr(new ChromeOutOfProcessPatcher);
-}
-
-bool ChromeConfigurator::DeltasEnabled() const {
+bool ConfiguratorImpl::DeltasEnabled() const {
   return deltas_enabled_;
 }
 
-bool ChromeConfigurator::UseBackgroundDownloader() const {
+bool ConfiguratorImpl::UseBackgroundDownloader() const {
   return background_downloads_enabled_;
 }
 
-scoped_refptr<base::SequencedTaskRunner>
-ChromeConfigurator::GetSequencedTaskRunner() const {
-  return content::BrowserThread::GetBlockingPool()
-      ->GetSequencedTaskRunnerWithShutdownBehavior(
-          content::BrowserThread::GetBlockingPool()->GetSequenceToken(),
-          base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
-}
-
-scoped_refptr<base::SingleThreadTaskRunner>
-ChromeConfigurator::GetSingleThreadTaskRunner() const {
-  return content::BrowserThread::GetMessageLoopProxyForThread(
-      content::BrowserThread::FILE);
-}
-
-}  // namespace
-
-scoped_refptr<update_client::Configurator>
-MakeChromeComponentUpdaterConfigurator(
-    const base::CommandLine* cmdline,
-    net::URLRequestContextGetter* context_getter) {
-  return new ChromeConfigurator(cmdline, context_getter);
-}
-
 }  // namespace component_updater