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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ENTERPRISE_CONNECTORS_ANALYSIS_CONTENT_ANALYSIS_SDK_MANAGER_H_
#define CHROME_BROWSER_ENTERPRISE_CONNECTORS_ANALYSIS_CONTENT_ANALYSIS_SDK_MANAGER_H_
#include <map>
#include <memory>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/no_destructor.h"
#include "third_party/content_analysis_sdk/src/browser/include/content_analysis/sdk/analysis_client.h"
namespace enterprise_connectors {
// Manages different content analysis client connections for different
// service providers. Clients are shared by all profiles running in this
// browser. This class should only be accessed on the UI thread.
class ContentAnalysisSdkManager {
public:
// A wrapper class to ref count std::unique_ptr<content_analysis::sdk::Client>
// returned from the SDK.
class WrappedClient : public base::RefCountedThreadSafe<WrappedClient> {
public:
explicit WrappedClient(
std::unique_ptr<content_analysis::sdk::Client> client);
content_analysis::sdk::Client* client() { return client_.get(); }
private:
friend class RefCountedThreadSafe<WrappedClient>;
~WrappedClient();
std::unique_ptr<content_analysis::sdk::Client> client_;
};
// This comparator is required in order to use Config in sets or as keys in
// maps.
constexpr static auto CompareConfig =
[](const content_analysis::sdk::Client::Config& c1,
const content_analysis::sdk::Client::Config& c2) {
return (c1.name < c2.name) ||
(c1.name == c2.name && !c1.user_specific && c2.user_specific);
};
static ContentAnalysisSdkManager* Get();
ContentAnalysisSdkManager(const ContentAnalysisSdkManager& other) = delete;
ContentAnalysisSdkManager(ContentAnalysisSdkManager&& other) = delete;
ContentAnalysisSdkManager& operator=(const ContentAnalysisSdkManager& other) =
delete;
ContentAnalysisSdkManager& operator=(ContentAnalysisSdkManager&& other) =
delete;
// Returns an SDK client that matches the given `config`. When calling
// this function with the same `config`, a scoped reference to the same
// `WrapperClient` is returned. A returned scoped reference remains
// valid even if the client with the given `config` is reset with a call
// to ResetClient().
scoped_refptr<WrappedClient> GetClient(
content_analysis::sdk::Client::Config config);
// Called when an error is detected with the given client. New calls
// to GetClient() will cause a new SDK client to be created and returned.
// Existing wrapped clients will continue to use the old client until
// they release their references.
// Virtual to be overridden in tests.
virtual void ResetClient(const content_analysis::sdk::Client::Config& config);
virtual void ResetAllClients();
bool HasClientForTesting(
const content_analysis::sdk::Client::Config& config) {
return clients_.count(config) > 0;
}
protected:
static void SetManagerForTesting(ContentAnalysisSdkManager* manager);
// Protected for testing.
ContentAnalysisSdkManager();
~ContentAnalysisSdkManager();
private:
friend class base::NoDestructor<ContentAnalysisSdkManager>;
// Creates a new SDK client. Virtual to be overridden in tests.
virtual std::unique_ptr<content_analysis::sdk::Client> CreateClient(
const content_analysis::sdk::Client::Config& config);
std::map<content_analysis::sdk::Client::Config,
scoped_refptr<WrappedClient>,
decltype(CompareConfig)>
clients_{CompareConfig};
};
} // namespace enterprise_connectors
#endif // CHROME_BROWSER_ENTERPRISE_CONNECTORS_ANALYSIS_CONTENT_ANALYSIS_SDK_MANAGER_H_
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