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// 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_SYNC_DRIVER_DATA_TYPE_MANAGER_H__
#define COMPONENTS_SYNC_DRIVER_DATA_TYPE_MANAGER_H__
#include <list>
#include <set>
#include <string>
#include "components/sync_driver/data_type_controller.h"
#include "components/sync_driver/data_type_status_table.h"
#include "sync/api/sync_error.h"
#include "sync/internal_api/public/base/model_type.h"
#include "sync/internal_api/public/configure_reason.h"
namespace sync_driver {
// This interface is for managing the start up and shut down life cycle
// of many different syncable data types.
class DataTypeManager {
public:
enum State {
STOPPED, // No data types are currently running.
CONFIGURING, // Data types are being started.
RETRYING, // Retrying a pending reconfiguration.
CONFIGURED, // All enabled data types are running.
STOPPING // Data types are being stopped.
};
// Update NotifyDone() in data_type_manager_impl.cc if you update
// this.
enum ConfigureStatus {
UNKNOWN = -1,
OK, // Configuration finished some or all types.
ABORTED, // Start was aborted by calling Stop() before
// all types were started.
UNRECOVERABLE_ERROR // We got an unrecoverable error during startup.
};
// Note: |errors| is only filled when status is not OK.
struct ConfigureResult {
ConfigureResult();
ConfigureResult(ConfigureStatus status,
syncer::ModelTypeSet requested_types);
~ConfigureResult();
ConfigureStatus status;
syncer::ModelTypeSet requested_types;
DataTypeStatusTable data_type_status_table;
};
virtual ~DataTypeManager() {}
// Convert a ConfigureStatus to string for debug purposes.
static std::string ConfigureStatusToString(ConfigureStatus status);
// Begins asynchronous configuration of data types. Any currently
// running data types that are not in the desired_types set will be
// stopped. Any stopped data types that are in the desired_types
// set will be started. All other data types are left in their
// current state. A SYNC_CONFIGURE_START notification will be sent
// to the UI thread when configuration is started and a
// SYNC_CONFIGURE_DONE notification will be sent (with a
// ConfigureResult detail) when configuration is complete.
//
// Note that you may call Configure() while configuration is in
// progress. Configuration will be complete only when the
// desired_types supplied in the last call to Configure is achieved.
virtual void Configure(syncer::ModelTypeSet desired_types,
syncer::ConfigureReason reason) = 0;
// Resets the error state for |type| and triggers a reconfiguration if
// necessary.
virtual void ReenableType(syncer::ModelType type) = 0;
// Resets all data type error state.
virtual void ResetDataTypeErrors() = 0;
virtual void PurgeForMigration(syncer::ModelTypeSet undesired_types,
syncer::ConfigureReason reason) = 0;
// Synchronously stops all registered data types. If called after
// Configure() is called but before it finishes, it will abort the
// configure and any data types that have been started will be
// stopped.
virtual void Stop() = 0;
// The current state of the data type manager.
virtual State state() const = 0;
};
} // namespace sync_driver
#endif // COMPONENTS_SYNC_DRIVER_DATA_TYPE_MANAGER_H__
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