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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_AUTOFILL_CORE_BROWSER_LOGGING_LOG_MANAGER_H_
#define COMPONENTS_AUTOFILL_CORE_BROWSER_LOGGING_LOG_MANAGER_H_
#include <concepts>
#include <memory>
#include "base/functional/callback.h"
#include "base/types/pass_key.h"
#include "components/autofill/core/browser/logging/log_buffer_submitter.h"
#include "components/autofill/core/common/logging/log_macros.h"
namespace base {
class Value;
}
namespace autofill {
class LogRouter;
class RoutingLogManager;
class BufferingLogManager;
// This interface is used by the password management code to receive and display
// logs about progress of actions like saving a password.
class LogManager {
public:
// Returns the production code implementation of LogManager. If |log_router|
// is null, the manager will do nothing. |notification_callback| will be
// called every time the activity status of logging changes.
static std::unique_ptr<RoutingLogManager> Create(
LogRouter* log_router,
base::RepeatingClosure notification_callback);
static std::unique_ptr<BufferingLogManager> CreateBuffering();
virtual ~LogManager() = default;
// Returns whether logs recorded via `Log()` will be displayed.
virtual bool IsLoggingActive() const = 0;
// This is the preferred way to submitting log entries.
virtual LogBufferSubmitter Log() = 0;
// Emits the log entry.
virtual void ProcessLog(base::Value::Dict node,
base::PassKey<LogBufferSubmitter>) = 0;
};
// This LogManager subclass can be connected to a LogRouter, which in turn
// passes logs to LogReceivers.
class RoutingLogManager : public LogManager {
public:
// This method is called by a LogRouter, after the LogManager registers with
// one. If |router_can_be_used| is true, logs can be sent to LogRouter after
// the return from OnLogRouterAvailabilityChanged and will reach at least one
// LogReceiver instance. If |router_can_be_used| is false, no logs should be
// sent to the LogRouter.
virtual void OnLogRouterAvailabilityChanged(bool router_can_be_used) = 0;
// The owner of the LogManager can call this to start or end suspending the
// logging, by setting |suspended| to true or false, respectively.
virtual void SetSuspended(bool suspended) = 0;
};
// This LogManager subclass stores logs in a buffer, which can eventually be
// flushed to another LogManager. It facilitates logging across in sequences
// outside of the main thread in a thread-safe way.
class BufferingLogManager : public LogManager {
public:
// Passes the buffering log since the last Flush() to `destination`.
virtual void Flush(LogManager& destination) = 0;
};
inline LogBuffer::IsActive IsLoggingActive(LogManager* log_manager) {
return LogBuffer::IsActive(log_manager && log_manager->IsLoggingActive());
}
namespace internal {
// Traits for LOG_AF() macro for `LogManager*`.
template <std::convertible_to<const LogManager*> T>
struct LoggerTraits<T> {
static bool active(const LogManager* log_manager) {
return log_manager && log_manager->IsLoggingActive();
}
static LogBufferSubmitter get_stream(LogManager* log_manager) {
return log_manager->Log();
}
};
// Traits for LOG_AF() macro for `LogManager&`.
template <std::convertible_to<const LogManager&> T>
struct LoggerTraits<T> {
static bool active(const LogManager& log_manager) {
return log_manager.IsLoggingActive();
}
static LogBufferSubmitter get_stream(LogManager& log_manager) {
return log_manager.Log();
}
};
} // namespace internal
} // namespace autofill
#endif // COMPONENTS_AUTOFILL_CORE_BROWSER_LOGGING_LOG_MANAGER_H_
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