shell/application_manager/application_manager.cc - mojo-tools - Git at Google

 // 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 "shell/application_manager/application_manager.h"

 #include <stdio.h>

 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/stl_util.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/error_handler.h"
 #include "mojo/public/interfaces/application/shell.mojom.h"
 #include "mojo/services/content_handler/public/interfaces/content_handler.mojom.h"
 #include "shell/application_manager/fetcher.h"
 #include "shell/application_manager/local_fetcher.h"
 #include "shell/application_manager/network_fetcher.h"

 namespace mojo {

 namespace {
 // Used by TestAPI.
 bool has_created_instance = false;
 }  // namespace

 ApplicationManager::Delegate::~Delegate() {
 }

 void ApplicationManager::Delegate::OnApplicationError(const GURL& url) {
   LOG(ERROR) << "Communication error with application: " << url.spec();
 }

 GURL ApplicationManager::Delegate::ResolveURL(const GURL& url) {
   return url;
 }

 GURL ApplicationManager::Delegate::ResolveMappings(const GURL& url) {
   return url;
 }

 class ApplicationManager::ContentHandlerConnection : public ErrorHandler {
  public:
   ContentHandlerConnection(ApplicationManager* manager,
                            const GURL& content_handler_url)
       : manager_(manager), content_handler_url_(content_handler_url) {
     ServiceProviderPtr services;
     manager->ConnectToApplication(content_handler_url, GURL(),
                                   GetProxy(&services), nullptr);
     MessagePipe pipe;
     content_handler_.Bind(pipe.handle0.Pass());
     services->ConnectToService(ContentHandler::Name_, pipe.handle1.Pass());
     content_handler_.set_error_handler(this);
   }

   ContentHandler* content_handler() { return content_handler_.get(); }

   GURL content_handler_url() { return content_handler_url_; }

  private:
   // ErrorHandler implementation:
   void OnConnectionError() override { manager_->OnContentHandlerError(this); }

   ApplicationManager* manager_;
   GURL content_handler_url_;
   ContentHandlerPtr content_handler_;

   DISALLOW_COPY_AND_ASSIGN(ContentHandlerConnection);
 };

 // static
 ApplicationManager::TestAPI::TestAPI(ApplicationManager* manager)
     : manager_(manager) {
 }

 ApplicationManager::TestAPI::~TestAPI() {
 }

 bool ApplicationManager::TestAPI::HasCreatedInstance() {
   return has_created_instance;
 }

 bool ApplicationManager::TestAPI::HasFactoryForURL(const GURL& url) const {
   return manager_->url_to_shell_impl_.find(url) !=
          manager_->url_to_shell_impl_.end();
 }

 ApplicationManager::ApplicationManager(Delegate* delegate)
     : delegate_(delegate), weak_ptr_factory_(this) {
 }

 ApplicationManager::~ApplicationManager() {
   STLDeleteValues(&url_to_content_handler_);
   TerminateShellConnections();
   STLDeleteValues(&url_to_loader_);
   STLDeleteValues(&scheme_to_loader_);
 }

 void ApplicationManager::TerminateShellConnections() {
   STLDeleteValues(&url_to_shell_impl_);
 }

 void ApplicationManager::ConnectToApplication(
     const GURL& requested_url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider> services,
     ServiceProviderPtr exposed_services) {
   DCHECK(requested_url.is_valid());

   // We check both the mapped and resolved urls for existing shell_impls because
   // external applications can be registered for the unresolved mojo:foo urls.

   GURL mapped_url = delegate_->ResolveMappings(requested_url);
   if (ConnectToRunningApplication(mapped_url, requestor_url, &services,
                                   &exposed_services)) {
     return;
   }

   GURL resolved_url = delegate_->ResolveURL(mapped_url);
   if (ConnectToRunningApplication(resolved_url, requestor_url, &services,
                                   &exposed_services)) {
     return;
   }

   if (ConnectToApplicationWithLoader(requested_url, mapped_url, requestor_url,
                                      &services, &exposed_services,
                                      GetLoaderForURL(mapped_url))) {
     return;
   }

   if (ConnectToApplicationWithLoader(requested_url, resolved_url, requestor_url,
                                      &services, &exposed_services,
                                      GetLoaderForURL(resolved_url))) {
     return;
   }

   if (ConnectToApplicationWithLoader(requested_url, resolved_url, requestor_url,
                                      &services, &exposed_services,
                                      default_loader_.get())) {
     return;
   }

   auto callback = base::Bind(&ApplicationManager::HandleFetchCallback,
                              weak_ptr_factory_.GetWeakPtr(), requested_url,
                              requestor_url, base::Passed(services.Pass()),
                              base::Passed(exposed_services.Pass()));

   if (resolved_url.SchemeIsFile()) {
     new LocalFetcher(resolved_url,
                      base::Bind(callback, NativeRunner::DontDeleteAppPath));
     return;
   }

   if (!network_service_)
     ConnectToService(GURL("mojo:network_service"), &network_service_);

   new NetworkFetcher(disable_cache_, resolved_url, network_service_.get(),
                      base::Bind(callback, NativeRunner::DeleteAppPath));
 }

 bool ApplicationManager::ConnectToRunningApplication(
     const GURL& application_url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider>* services,
     ServiceProviderPtr* exposed_services) {
   ShellImpl* shell_impl = GetShellImpl(application_url);
   if (!shell_impl)
     return false;

   ConnectToClient(shell_impl, application_url, requestor_url, services->Pass(),
                   exposed_services->Pass());
   return true;
 }

 bool ApplicationManager::ConnectToApplicationWithLoader(
     const GURL& requested_url,
     const GURL& resolved_url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider>* services,
     ServiceProviderPtr* exposed_services,
     ApplicationLoader* loader) {
   if (!loader)
     return false;

   loader->Load(resolved_url,
                RegisterShell(requested_url, resolved_url, requestor_url,
                              services->Pass(), exposed_services->Pass()));
   return true;
 }

 InterfaceRequest<Application> ApplicationManager::RegisterShell(
     const GURL& requested_url,
     const GURL& resolved_url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider> services,
     ServiceProviderPtr exposed_services) {
   ApplicationPtr application;
   InterfaceRequest<Application> application_request = GetProxy(&application);
   ShellImpl* shell =
       new ShellImpl(application.Pass(), this, requested_url, resolved_url);
   url_to_shell_impl_[resolved_url] = shell;
   shell->InitializeApplication(GetArgsForURL(requested_url));
   ConnectToClient(shell, resolved_url, requestor_url, services.Pass(),
                   exposed_services.Pass());
   return application_request.Pass();
 }

 ShellImpl* ApplicationManager::GetShellImpl(const GURL& url) {
   const auto& shell_it = url_to_shell_impl_.find(url);
   if (shell_it != url_to_shell_impl_.end())
     return shell_it->second;
   return nullptr;
 }

 void ApplicationManager::ConnectToClient(
     ShellImpl* shell_impl,
     const GURL& url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider> services,
     ServiceProviderPtr exposed_services) {
   shell_impl->ConnectToClient(requestor_url, services.Pass(),
                               exposed_services.Pass());
 }

 void ApplicationManager::HandleFetchCallback(
     const GURL& requested_url,
     const GURL& requestor_url,
     InterfaceRequest<ServiceProvider> services,
     ServiceProviderPtr exposed_services,
     NativeRunner::CleanupBehavior cleanup_behavior,
     scoped_ptr<Fetcher> fetcher) {
   if (!fetcher) {
     // Network error. Drop |application_request| to tell requestor.
     return;
   }

   GURL redirect_url = fetcher->GetRedirectURL();
   if (!redirect_url.is_empty()) {
     // And around we go again... Whee!
     ConnectToApplication(redirect_url, requestor_url, services.Pass(),
                          exposed_services.Pass());
     return;
   }

   // We already checked if the application was running before we fetched it, but
   // it might have started while the fetch was outstanding. We don't want to
   // have two copies of the app running, so check again.
   //
   // Also, it's possible the original URL was redirected to an app that is
   // already running.
   if (ConnectToRunningApplication(fetcher->GetURL(), requestor_url, &services,
                                   &exposed_services)) {
     return;
   }

   InterfaceRequest<Application> application_request(
       RegisterShell(requested_url, fetcher->GetURL(), requestor_url,
                     services.Pass(), exposed_services.Pass()));

   // If the response begins with a #!mojo <content-handler-url>, use it.
   GURL content_handler_url;
   std::string shebang;
   if (fetcher->PeekContentHandler(&shebang, &content_handler_url)) {
     LoadWithContentHandler(
         content_handler_url, application_request.Pass(),
         fetcher->AsURLResponse(blocking_pool_,
                                static_cast<int>(shebang.size())));
     return;
   }

   MimeTypeToURLMap::iterator iter = mime_type_to_url_.find(fetcher->MimeType());
   if (iter != mime_type_to_url_.end()) {
     LoadWithContentHandler(iter->second, application_request.Pass(),
                            fetcher->AsURLResponse(blocking_pool_, 0));
     return;
   }

   // TODO(aa): Sanity check that the thing we got looks vaguely like a mojo
   // application. That could either mean looking for the platform-specific dll
   // header, or looking for some specific mojo signature prepended to the
   // library.

   fetcher->AsPath(blocking_pool_,
                   base::Bind(&ApplicationManager::RunNativeApplication,
                              weak_ptr_factory_.GetWeakPtr(),
                              base::Passed(application_request.Pass()),
                              cleanup_behavior, base::Passed(fetcher.Pass())));
 }

 void ApplicationManager::RunNativeApplication(
     InterfaceRequest<Application> application_request,
     NativeRunner::CleanupBehavior cleanup_behavior,
     scoped_ptr<Fetcher> fetcher,
     const base::FilePath& path,
     bool path_exists) {
   // We only passed fetcher to keep it alive. Done with it now.
   fetcher.reset();

   DCHECK(application_request.is_pending());

   if (!path_exists) {
     LOG(ERROR) << "Library not started because library path '" << path.value()
                << "' does not exist.";
     return;
   }

   NativeRunner* runner = native_runner_factory_->Create().release();
   native_runners_.push_back(runner);
   runner->Start(path, cleanup_behavior, application_request.Pass(),
                 base::Bind(&ApplicationManager::CleanupRunner,
                            weak_ptr_factory_.GetWeakPtr(), runner));
 }

 void ApplicationManager::RegisterExternalApplication(
     const GURL& url,
     const std::vector<std::string>& args,
     ApplicationPtr application) {
   const auto& args_it = url_to_args_.find(url);
   if (args_it != url_to_args_.end()) {
     LOG(WARNING) << "--args-for provided for external application " << url
                  << " <ignored>";
   }
   ShellImpl* shell_impl = new ShellImpl(application.Pass(), this, url, url);
   url_to_shell_impl_[url] = shell_impl;
   shell_impl->InitializeApplication(Array<String>::From(args));
 }

 void ApplicationManager::RegisterContentHandler(
     const std::string& mime_type,
     const GURL& content_handler_url) {
   DCHECK(content_handler_url.is_valid())
       << "Content handler URL is invalid for mime type " << mime_type;
   mime_type_to_url_[mime_type] = content_handler_url;
 }

 void ApplicationManager::LoadWithContentHandler(
     const GURL& content_handler_url,
     InterfaceRequest<Application> application_request,
     URLResponsePtr url_response) {
   ContentHandlerConnection* connection = NULL;
   URLToContentHandlerMap::iterator iter =
       url_to_content_handler_.find(content_handler_url);
   if (iter != url_to_content_handler_.end()) {
     connection = iter->second;
   } else {
     connection = new ContentHandlerConnection(this, content_handler_url);
     url_to_content_handler_[content_handler_url] = connection;
   }

   connection->content_handler()->StartApplication(application_request.Pass(),
                                                   url_response.Pass());
 }

 void ApplicationManager::SetLoaderForURL(scoped_ptr<ApplicationLoader> loader,
                                          const GURL& url) {
   URLToLoaderMap::iterator it = url_to_loader_.find(url);
   if (it != url_to_loader_.end())
     delete it->second;
   url_to_loader_[url] = loader.release();
 }

 void ApplicationManager::SetLoaderForScheme(
     scoped_ptr<ApplicationLoader> loader,
     const std::string& scheme) {
   SchemeToLoaderMap::iterator it = scheme_to_loader_.find(scheme);
   if (it != scheme_to_loader_.end())
     delete it->second;
   scheme_to_loader_[scheme] = loader.release();
 }

 void ApplicationManager::SetArgsForURL(const std::vector<std::string>& args,
                                        const GURL& url) {
   url_to_args_[url] = args;
 }

 ApplicationLoader* ApplicationManager::GetLoaderForURL(const GURL& url) {
   auto url_it = url_to_loader_.find(url);
   if (url_it != url_to_loader_.end())
     return url_it->second;
   auto scheme_it = scheme_to_loader_.find(url.scheme());
   if (scheme_it != scheme_to_loader_.end())
     return scheme_it->second;
   return NULL;
 }

 void ApplicationManager::OnShellImplError(ShellImpl* shell_impl) {
   // Called from ~ShellImpl, so we do not need to call Destroy here.
   const GURL url = shell_impl->url();
   const GURL requested_url = shell_impl->requested_url();
   // Remove the shell.
   URLToShellImplMap::iterator it = url_to_shell_impl_.find(url);
   DCHECK(it != url_to_shell_impl_.end());
   delete it->second;
   url_to_shell_impl_.erase(it);
   delegate_->OnApplicationError(requested_url);
 }

 void ApplicationManager::OnContentHandlerError(
     ContentHandlerConnection* content_handler) {
   // Remove the mapping to the content handler.
   auto it =
       url_to_content_handler_.find(content_handler->content_handler_url());
   DCHECK(it != url_to_content_handler_.end());
   delete it->second;
   url_to_content_handler_.erase(it);
 }

 ScopedMessagePipeHandle ApplicationManager::ConnectToServiceByName(
     const GURL& application_url,
     const std::string& interface_name) {
   ServiceProviderPtr services;
   ConnectToApplication(application_url, GURL(), GetProxy(&services), nullptr);
   MessagePipe pipe;
   services->ConnectToService(interface_name, pipe.handle1.Pass());
   return pipe.handle0.Pass();
 }

 Array<String> ApplicationManager::GetArgsForURL(const GURL& url) {
   const auto& args_it = url_to_args_.find(url);
   if (args_it != url_to_args_.end())
     return Array<String>::From(args_it->second);
   return Array<String>();
 }

 void ApplicationManager::CleanupRunner(NativeRunner* runner) {
   native_runners_.erase(
       std::find(native_runners_.begin(), native_runners_.end(), runner));
 }

 }  // namespace mojo
	// 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 "shell/application_manager/application_manager.h"

	#include <stdio.h>

	#include "base/bind.h"
	#include "base/lazy_instance.h"
	#include "base/logging.h"
	#include "base/macros.h"
	#include "base/stl_util.h"
	#include "mojo/public/cpp/bindings/binding.h"
	#include "mojo/public/cpp/bindings/error_handler.h"
	#include "mojo/public/interfaces/application/shell.mojom.h"
	#include "mojo/services/content_handler/public/interfaces/content_handler.mojom.h"
	#include "shell/application_manager/fetcher.h"
	#include "shell/application_manager/local_fetcher.h"
	#include "shell/application_manager/network_fetcher.h"

	namespace mojo {

	namespace {
	// Used by TestAPI.
	bool has_created_instance = false;
	} // namespace

	ApplicationManager::Delegate::~Delegate() {
	}

	void ApplicationManager::Delegate::OnApplicationError(const GURL& url) {
	LOG(ERROR) << "Communication error with application: " << url.spec();
	}

	GURL ApplicationManager::Delegate::ResolveURL(const GURL& url) {
	return url;
	}

	GURL ApplicationManager::Delegate::ResolveMappings(const GURL& url) {
	return url;
	}

	class ApplicationManager::ContentHandlerConnection : public ErrorHandler {
	public:
	ContentHandlerConnection(ApplicationManager* manager,
	const GURL& content_handler_url)
	: manager_(manager), content_handler_url_(content_handler_url) {
	ServiceProviderPtr services;
	manager->ConnectToApplication(content_handler_url, GURL(),
	GetProxy(&services), nullptr);
	MessagePipe pipe;
	content_handler_.Bind(pipe.handle0.Pass());
	services->ConnectToService(ContentHandler::Name_, pipe.handle1.Pass());
	content_handler_.set_error_handler(this);
	}

	ContentHandler* content_handler() { return content_handler_.get(); }

	GURL content_handler_url() { return content_handler_url_; }

	private:
	// ErrorHandler implementation:
	void OnConnectionError() override { manager_->OnContentHandlerError(this); }

	ApplicationManager* manager_;
	GURL content_handler_url_;
	ContentHandlerPtr content_handler_;

	DISALLOW_COPY_AND_ASSIGN(ContentHandlerConnection);
	};

	// static
	ApplicationManager::TestAPI::TestAPI(ApplicationManager* manager)
	: manager_(manager) {
	}

	ApplicationManager::TestAPI::~TestAPI() {
	}

	bool ApplicationManager::TestAPI::HasCreatedInstance() {
	return has_created_instance;
	}

	bool ApplicationManager::TestAPI::HasFactoryForURL(const GURL& url) const {
	return manager_->url_to_shell_impl_.find(url) !=
	manager_->url_to_shell_impl_.end();
	}

	ApplicationManager::ApplicationManager(Delegate* delegate)
	: delegate_(delegate), weak_ptr_factory_(this) {
	}

	ApplicationManager::~ApplicationManager() {
	STLDeleteValues(&url_to_content_handler_);
	TerminateShellConnections();
	STLDeleteValues(&url_to_loader_);
	STLDeleteValues(&scheme_to_loader_);
	}

	void ApplicationManager::TerminateShellConnections() {
	STLDeleteValues(&url_to_shell_impl_);
	}

	void ApplicationManager::ConnectToApplication(
	const GURL& requested_url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider> services,
	ServiceProviderPtr exposed_services) {
	DCHECK(requested_url.is_valid());

	// We check both the mapped and resolved urls for existing shell_impls because
	// external applications can be registered for the unresolved mojo:foo urls.

	GURL mapped_url = delegate_->ResolveMappings(requested_url);
	if (ConnectToRunningApplication(mapped_url, requestor_url, &services,
	&exposed_services)) {
	return;
	}

	GURL resolved_url = delegate_->ResolveURL(mapped_url);
	if (ConnectToRunningApplication(resolved_url, requestor_url, &services,
	&exposed_services)) {
	return;
	}

	if (ConnectToApplicationWithLoader(requested_url, mapped_url, requestor_url,
	&services, &exposed_services,
	GetLoaderForURL(mapped_url))) {
	return;
	}

	if (ConnectToApplicationWithLoader(requested_url, resolved_url, requestor_url,
	&services, &exposed_services,
	GetLoaderForURL(resolved_url))) {
	return;
	}

	if (ConnectToApplicationWithLoader(requested_url, resolved_url, requestor_url,
	&services, &exposed_services,
	default_loader_.get())) {
	return;
	}

	auto callback = base::Bind(&ApplicationManager::HandleFetchCallback,
	weak_ptr_factory_.GetWeakPtr(), requested_url,
	requestor_url, base::Passed(services.Pass()),
	base::Passed(exposed_services.Pass()));

	if (resolved_url.SchemeIsFile()) {
	new LocalFetcher(resolved_url,
	base::Bind(callback, NativeRunner::DontDeleteAppPath));
	return;
	}

	if (!network_service_)
	ConnectToService(GURL("mojo:network_service"), &network_service_);

	new NetworkFetcher(disable_cache_, resolved_url, network_service_.get(),
	base::Bind(callback, NativeRunner::DeleteAppPath));
	}

	bool ApplicationManager::ConnectToRunningApplication(
	const GURL& application_url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider>* services,
	ServiceProviderPtr* exposed_services) {
	ShellImpl* shell_impl = GetShellImpl(application_url);
	if (!shell_impl)
	return false;

	ConnectToClient(shell_impl, application_url, requestor_url, services->Pass(),
	exposed_services->Pass());
	return true;
	}

	bool ApplicationManager::ConnectToApplicationWithLoader(
	const GURL& requested_url,
	const GURL& resolved_url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider>* services,
	ServiceProviderPtr* exposed_services,
	ApplicationLoader* loader) {
	if (!loader)
	return false;

	loader->Load(resolved_url,
	RegisterShell(requested_url, resolved_url, requestor_url,
	services->Pass(), exposed_services->Pass()));
	return true;
	}

	InterfaceRequest<Application> ApplicationManager::RegisterShell(
	const GURL& requested_url,
	const GURL& resolved_url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider> services,
	ServiceProviderPtr exposed_services) {
	ApplicationPtr application;
	InterfaceRequest<Application> application_request = GetProxy(&application);
	ShellImpl* shell =
	new ShellImpl(application.Pass(), this, requested_url, resolved_url);
	url_to_shell_impl_[resolved_url] = shell;
	shell->InitializeApplication(GetArgsForURL(requested_url));
	ConnectToClient(shell, resolved_url, requestor_url, services.Pass(),
	exposed_services.Pass());
	return application_request.Pass();
	}

	ShellImpl* ApplicationManager::GetShellImpl(const GURL& url) {
	const auto& shell_it = url_to_shell_impl_.find(url);
	if (shell_it != url_to_shell_impl_.end())
	return shell_it->second;
	return nullptr;
	}

	void ApplicationManager::ConnectToClient(
	ShellImpl* shell_impl,
	const GURL& url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider> services,
	ServiceProviderPtr exposed_services) {
	shell_impl->ConnectToClient(requestor_url, services.Pass(),
	exposed_services.Pass());
	}

	void ApplicationManager::HandleFetchCallback(
	const GURL& requested_url,
	const GURL& requestor_url,
	InterfaceRequest<ServiceProvider> services,
	ServiceProviderPtr exposed_services,
	NativeRunner::CleanupBehavior cleanup_behavior,
	scoped_ptr<Fetcher> fetcher) {
	if (!fetcher) {
	// Network error. Drop \|application_request\| to tell requestor.
	return;
	}

	GURL redirect_url = fetcher->GetRedirectURL();
	if (!redirect_url.is_empty()) {
	// And around we go again... Whee!
	ConnectToApplication(redirect_url, requestor_url, services.Pass(),
	exposed_services.Pass());
	return;
	}

	// We already checked if the application was running before we fetched it, but
	// it might have started while the fetch was outstanding. We don't want to
	// have two copies of the app running, so check again.
	//
	// Also, it's possible the original URL was redirected to an app that is
	// already running.
	if (ConnectToRunningApplication(fetcher->GetURL(), requestor_url, &services,
	&exposed_services)) {
	return;
	}

	InterfaceRequest<Application> application_request(
	RegisterShell(requested_url, fetcher->GetURL(), requestor_url,
	services.Pass(), exposed_services.Pass()));

	// If the response begins with a #!mojo <content-handler-url>, use it.
	GURL content_handler_url;
	std::string shebang;
	if (fetcher->PeekContentHandler(&shebang, &content_handler_url)) {
	LoadWithContentHandler(
	content_handler_url, application_request.Pass(),
	fetcher->AsURLResponse(blocking_pool_,
	static_cast<int>(shebang.size())));
	return;
	}

	MimeTypeToURLMap::iterator iter = mime_type_to_url_.find(fetcher->MimeType());
	if (iter != mime_type_to_url_.end()) {
	LoadWithContentHandler(iter->second, application_request.Pass(),
	fetcher->AsURLResponse(blocking_pool_, 0));
	return;
	}

	// TODO(aa): Sanity check that the thing we got looks vaguely like a mojo
	// application. That could either mean looking for the platform-specific dll
	// header, or looking for some specific mojo signature prepended to the
	// library.

	fetcher->AsPath(blocking_pool_,
	base::Bind(&ApplicationManager::RunNativeApplication,
	weak_ptr_factory_.GetWeakPtr(),
	base::Passed(application_request.Pass()),
	cleanup_behavior, base::Passed(fetcher.Pass())));
	}

	void ApplicationManager::RunNativeApplication(
	InterfaceRequest<Application> application_request,
	NativeRunner::CleanupBehavior cleanup_behavior,
	scoped_ptr<Fetcher> fetcher,
	const base::FilePath& path,
	bool path_exists) {
	// We only passed fetcher to keep it alive. Done with it now.
	fetcher.reset();

	DCHECK(application_request.is_pending());

	if (!path_exists) {
	LOG(ERROR) << "Library not started because library path '" << path.value()
	<< "' does not exist.";
	return;
	}

	NativeRunner* runner = native_runner_factory_->Create().release();
	native_runners_.push_back(runner);
	runner->Start(path, cleanup_behavior, application_request.Pass(),
	base::Bind(&ApplicationManager::CleanupRunner,
	weak_ptr_factory_.GetWeakPtr(), runner));
	}

	void ApplicationManager::RegisterExternalApplication(
	const GURL& url,
	const std::vector<std::string>& args,
	ApplicationPtr application) {
	const auto& args_it = url_to_args_.find(url);
	if (args_it != url_to_args_.end()) {
	LOG(WARNING) << "--args-for provided for external application " << url
	<< " <ignored>";
	}
	ShellImpl* shell_impl = new ShellImpl(application.Pass(), this, url, url);
	url_to_shell_impl_[url] = shell_impl;
	shell_impl->InitializeApplication(Array<String>::From(args));
	}

	void ApplicationManager::RegisterContentHandler(
	const std::string& mime_type,
	const GURL& content_handler_url) {
	DCHECK(content_handler_url.is_valid())
	<< "Content handler URL is invalid for mime type " << mime_type;
	mime_type_to_url_[mime_type] = content_handler_url;
	}

	void ApplicationManager::LoadWithContentHandler(
	const GURL& content_handler_url,
	InterfaceRequest<Application> application_request,
	URLResponsePtr url_response) {
	ContentHandlerConnection* connection = NULL;
	URLToContentHandlerMap::iterator iter =
	url_to_content_handler_.find(content_handler_url);
	if (iter != url_to_content_handler_.end()) {
	connection = iter->second;
	} else {
	connection = new ContentHandlerConnection(this, content_handler_url);
	url_to_content_handler_[content_handler_url] = connection;
	}

	connection->content_handler()->StartApplication(application_request.Pass(),
	url_response.Pass());
	}

	void ApplicationManager::SetLoaderForURL(scoped_ptr<ApplicationLoader> loader,
	const GURL& url) {
	URLToLoaderMap::iterator it = url_to_loader_.find(url);
	if (it != url_to_loader_.end())
	delete it->second;
	url_to_loader_[url] = loader.release();
	}

	void ApplicationManager::SetLoaderForScheme(
	scoped_ptr<ApplicationLoader> loader,
	const std::string& scheme) {
	SchemeToLoaderMap::iterator it = scheme_to_loader_.find(scheme);
	if (it != scheme_to_loader_.end())
	delete it->second;
	scheme_to_loader_[scheme] = loader.release();
	}

	void ApplicationManager::SetArgsForURL(const std::vector<std::string>& args,
	const GURL& url) {
	url_to_args_[url] = args;
	}

	ApplicationLoader* ApplicationManager::GetLoaderForURL(const GURL& url) {
	auto url_it = url_to_loader_.find(url);
	if (url_it != url_to_loader_.end())
	return url_it->second;
	auto scheme_it = scheme_to_loader_.find(url.scheme());
	if (scheme_it != scheme_to_loader_.end())
	return scheme_it->second;
	return NULL;
	}

	void ApplicationManager::OnShellImplError(ShellImpl* shell_impl) {
	// Called from ~ShellImpl, so we do not need to call Destroy here.
	const GURL url = shell_impl->url();
	const GURL requested_url = shell_impl->requested_url();
	// Remove the shell.
	URLToShellImplMap::iterator it = url_to_shell_impl_.find(url);
	DCHECK(it != url_to_shell_impl_.end());
	delete it->second;
	url_to_shell_impl_.erase(it);
	delegate_->OnApplicationError(requested_url);
	}

	void ApplicationManager::OnContentHandlerError(
	ContentHandlerConnection* content_handler) {
	// Remove the mapping to the content handler.
	auto it =
	url_to_content_handler_.find(content_handler->content_handler_url());
	DCHECK(it != url_to_content_handler_.end());
	delete it->second;
	url_to_content_handler_.erase(it);
	}

	ScopedMessagePipeHandle ApplicationManager::ConnectToServiceByName(
	const GURL& application_url,
	const std::string& interface_name) {
	ServiceProviderPtr services;
	ConnectToApplication(application_url, GURL(), GetProxy(&services), nullptr);
	MessagePipe pipe;
	services->ConnectToService(interface_name, pipe.handle1.Pass());
	return pipe.handle0.Pass();
	}

	Array<String> ApplicationManager::GetArgsForURL(const GURL& url) {
	const auto& args_it = url_to_args_.find(url);
	if (args_it != url_to_args_.end())
	return Array<String>::From(args_it->second);
	return Array<String>();
	}

	void ApplicationManager::CleanupRunner(NativeRunner* runner) {
	native_runners_.erase(
	std::find(native_runners_.begin(), native_runners_.end(), runner));
	}

	} // namespace mojo