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// Copyright (c) 2012 The Chromium OS 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 SHILL_PROPERTY_STORE_
#define SHILL_PROPERTY_STORE_
#include <map>
#include <string>
#include <vector>
#include <base/basictypes.h>
#include <base/callback.h>
#include "shill/accessor_interface.h"
#include "shill/property_iterator.h"
namespace shill {
class Error;
class PropertyStore {
public:
typedef base::Callback<void(const std::string &)> PropertyChangeCallback;
PropertyStore();
explicit PropertyStore(PropertyChangeCallback property_change_callback);
virtual ~PropertyStore();
virtual bool Contains(const std::string& property) const;
// Methods to allow the getting of properties stored in the referenced
// |store_| by name. Upon success, these methods return true and return the
// property value in |value|. Upon failure, they return false and
// leave |value| untouched.
bool GetBoolProperty(const std::string &name, bool *value,
Error *error) const;
bool GetInt16Property(const std::string &name, int16 *value,
Error *error) const;
bool GetInt32Property(const std::string &name, int32 *value,
Error *error) const;
bool GetKeyValueStoreProperty(const std::string &name, KeyValueStore *value,
Error *error) const;
bool GetStringProperty(const std::string &name, std::string *value,
Error *error) const;
bool GetStringmapProperty(const std::string &name, Stringmap *values,
Error *error) const;
bool GetStringmapsProperty(const std::string &name, Stringmaps *values,
Error *error) const;
bool GetStringsProperty(const std::string &name, Strings *values,
Error *error) const;
bool GetUint8Property(const std::string &name, uint8 *value,
Error *error) const;
bool GetUint16Property(const std::string &name, uint16 *value,
Error *error) const;
bool GetUint32Property(const std::string &name, uint32 *value,
Error *error) const;
bool GetUint64Property(const std::string &name, uint64 *value,
Error *error) const;
bool GetRpcIdentifierProperty(const std::string &name, RpcIdentifier *value,
Error *error) const;
// Methods to allow the setting, by name, of properties stored in this object.
// The property names are declared in chromeos/dbus/service_constants.h,
// so that they may be shared with libcros.
// If the property is successfully changed, these methods return true,
// and leave |error| untouched.
// If the property is unchanged because it already has the desired value,
// these methods return false, and leave |error| untouched.
// If the property change fails, these methods return false, and update
// |error|. However, updating |error| is skipped if |error| is NULL.
virtual bool SetBoolProperty(const std::string &name,
bool value,
Error *error);
virtual bool SetInt16Property(const std::string &name,
int16 value,
Error *error);
virtual bool SetInt32Property(const std::string &name,
int32 value,
Error *error);
virtual bool SetStringProperty(const std::string &name,
const std::string &value,
Error *error);
virtual bool SetStringmapProperty(
const std::string &name,
const std::map<std::string, std::string> &values,
Error *error);
virtual bool SetStringmapsProperty(
const std::string &name,
const std::vector<std::map<std::string, std::string> > &values,
Error *error);
virtual bool SetStringsProperty(const std::string &name,
const std::vector<std::string> &values,
Error *error);
virtual bool SetUint8Property(const std::string &name,
uint8 value,
Error *error);
virtual bool SetUint16Property(const std::string &name,
uint16 value,
Error *error);
virtual bool SetUint32Property(const std::string &name,
uint32 value,
Error *error);
virtual bool SetUint64Property(const std::string &name,
uint64 value,
Error *error);
virtual bool SetRpcIdentifierProperty(const std::string &name,
const RpcIdentifier &value,
Error *error);
// Clearing a property resets it to its "factory" value. This value
// is generally the value that it (the property) had when it was
// registered with PropertyStore.
//
// The exception to this rule is write-only derived properties. For
// such properties, the property owner explicitly provides a
// "factory" value at registration time. This is necessary because
// PropertyStore can't read the current value at registration time.
//
// |name| is the key used to access the property. If the property
// cannot be cleared, |error| is set, and the method returns false.
// Otherwrise, |error| is unchanged, and the method returns true.
virtual bool ClearProperty(const std::string &name, Error *error);
// Accessors for iterators over property maps. Useful for dumping all
// properties.
ReadablePropertyConstIterator<bool> GetBoolPropertiesIter() const;
ReadablePropertyConstIterator<int16> GetInt16PropertiesIter() const;
ReadablePropertyConstIterator<int32> GetInt32PropertiesIter() const;
ReadablePropertyConstIterator<KeyValueStore> GetKeyValueStorePropertiesIter(
) const;
ReadablePropertyConstIterator<RpcIdentifier> GetRpcIdentifierPropertiesIter(
) const;
ReadablePropertyConstIterator<RpcIdentifiers> GetRpcIdentifiersPropertiesIter(
) const;
ReadablePropertyConstIterator<std::string> GetStringPropertiesIter() const;
ReadablePropertyConstIterator<Stringmap> GetStringmapPropertiesIter() const;
ReadablePropertyConstIterator<Stringmaps> GetStringmapsPropertiesIter() const;
ReadablePropertyConstIterator<Strings> GetStringsPropertiesIter() const;
ReadablePropertyConstIterator<uint8> GetUint8PropertiesIter() const;
ReadablePropertyConstIterator<uint16> GetUint16PropertiesIter() const;
ReadablePropertyConstIterator<uint32> GetUint32PropertiesIter() const;
ReadablePropertyConstIterator<uint64> GetUint64PropertiesIter() const;
// Methods for registering a property.
//
// It is permitted to re-register a property (in which case the old
// binding is forgotten). However, the newly bound object must be of
// the same type.
//
// Note that types do not encode read-write permission. Hence, it
// is possible to change permissions by rebinding a property to the
// same object.
//
// (Corollary of the rebinding-to-same-type restriction: a
// PropertyStore cannot hold two properties of the same name, but
// differing types.)
void RegisterBool(const std::string &name, bool *prop);
void RegisterConstBool(const std::string &name, const bool *prop);
void RegisterWriteOnlyBool(const std::string &name, bool *prop);
void RegisterInt16(const std::string &name, int16 *prop);
void RegisterConstInt16(const std::string &name, const int16 *prop);
void RegisterWriteOnlyInt16(const std::string &name, int16 *prop);
void RegisterInt32(const std::string &name, int32 *prop);
void RegisterConstInt32(const std::string &name, const int32 *prop);
void RegisterWriteOnlyInt32(const std::string &name, int32 *prop);
void RegisterUint32(const std::string &name, uint32 *prop);
void RegisterString(const std::string &name, std::string *prop);
void RegisterConstString(const std::string &name, const std::string *prop);
void RegisterWriteOnlyString(const std::string &name, std::string *prop);
void RegisterStringmap(const std::string &name, Stringmap *prop);
void RegisterConstStringmap(const std::string &name, const Stringmap *prop);
void RegisterWriteOnlyStringmap(const std::string &name, Stringmap *prop);
void RegisterStringmaps(const std::string &name, Stringmaps *prop);
void RegisterConstStringmaps(const std::string &name, const Stringmaps *prop);
void RegisterWriteOnlyStringmaps(const std::string &name, Stringmaps *prop);
void RegisterStrings(const std::string &name, Strings *prop);
void RegisterConstStrings(const std::string &name, const Strings *prop);
void RegisterWriteOnlyStrings(const std::string &name, Strings *prop);
void RegisterUint8(const std::string &name, uint8 *prop);
void RegisterConstUint8(const std::string &name, const uint8 *prop);
void RegisterWriteOnlyUint8(const std::string &name, uint8 *prop);
void RegisterUint16(const std::string &name, uint16 *prop);
void RegisterConstUint16(const std::string &name, const uint16 *prop);
void RegisterWriteOnlyUint16(const std::string &name, uint16 *prop);
void RegisterDerivedBool(const std::string &name,
const BoolAccessor &accessor);
void RegisterDerivedInt32(const std::string &name,
const Int32Accessor &accessor);
void RegisterDerivedKeyValueStore(const std::string &name,
const KeyValueStoreAccessor &accessor);
void RegisterDerivedRpcIdentifier(const std::string &name,
const RpcIdentifierAccessor &acc);
void RegisterDerivedRpcIdentifiers(const std::string &name,
const RpcIdentifiersAccessor &accessor);
void RegisterDerivedString(const std::string &name,
const StringAccessor &accessor);
void RegisterDerivedStringmap(const std::string &name,
const StringmapAccessor &accessor);
void RegisterDerivedStringmaps(const std::string &name,
const StringmapsAccessor &accessor);
void RegisterDerivedStrings(const std::string &name,
const StringsAccessor &accessor);
void RegisterDerivedUint16(const std::string &name,
const Uint16Accessor &accessor);
void RegisterDerivedUint64(const std::string &name,
const Uint64Accessor &accessor);
private:
template <class V>
bool GetProperty(
const std::string &name,
V *value,
Error *error,
const std::map< std::string, std::tr1::shared_ptr<
AccessorInterface<V> > > &collection,
const std::string &value_type_english) const;
template <class V>
bool SetProperty(
const std::string &name,
const V &value,
Error *error,
std::map< std::string, std::tr1::shared_ptr< AccessorInterface<V> > > &,
const std::string &value_type_english);
// These are std::maps instead of something cooler because the common
// operation is iterating through them and returning all properties.
std::map<std::string, BoolAccessor> bool_properties_;
std::map<std::string, Int16Accessor> int16_properties_;
std::map<std::string, Int32Accessor> int32_properties_;
std::map<std::string, KeyValueStoreAccessor> key_value_store_properties_;
std::map<std::string, RpcIdentifierAccessor> rpc_identifier_properties_;
std::map<std::string, RpcIdentifiersAccessor> rpc_identifiers_properties_;
std::map<std::string, StringAccessor> string_properties_;
std::map<std::string, StringmapAccessor> stringmap_properties_;
std::map<std::string, StringmapsAccessor> stringmaps_properties_;
std::map<std::string, StringsAccessor> strings_properties_;
std::map<std::string, Uint8Accessor> uint8_properties_;
std::map<std::string, Uint16Accessor> uint16_properties_;
std::map<std::string, Uint32Accessor> uint32_properties_;
std::map<std::string, Uint64Accessor> uint64_properties_;
PropertyChangeCallback property_changed_callback_;
DISALLOW_COPY_AND_ASSIGN(PropertyStore);
};
} // namespace shill
#endif // SHILL_PROPERTY_STORE_