1 #ifndef PERSISTENCY_CLIENT_LIBRARY_H
2 #define PERSISTENCY_CLIENT_LIBRARY_H
4 /******************************************************************************
7 * Company XS Embedded GmbH
8 *****************************************************************************/
9 /******************************************************************************
10 * This Source Code Form is subject to the terms of the
11 * Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed
12 * with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
13 ******************************************************************************/
15 * \file persistence_client_library.h
16 * \ingroup Persistence client library
17 * \author Ingo Huerner (XSe) / Guy Sagnes (Continental)
18 * \brief Header of the persistence client library.
19 * Library provides an API to access persistent data
22 * 25/06/13 Ingo Hürner 1.0.0 - Rework of Init functions
23 * 04/11/13 Ingo Hürner 1.3.0 - Added define for shutdown type none
26 /** \ingroup GEN_PERS */
27 /** \defgroup PERS_CLIENT Client: initialization access
30 /** \defgroup PERS_CLIENT_INTERFACE API document
35 * @mainpage The Persistence Client Library documentation
36 * GENIVI's Persistence Client Library, known as PCL, is responsible for handling persistent data,
37 * including all data read and modified during a lifetime of an infotainment system.<br>
38 * "Persistent data" is data stored in a non-volatile storage such as a hard disk drive or FLASH memory.
40 * The Persistence Client Library (PCL) provides an API to applications to read and write persistent data
41 * via a key-value and a file interface.<br>
42 * It also provide a plugin API to allow users to extend the client library with custom storage solutions.
44 * @section Custom plugin configuration file
46 * The plugin configuration file has been changed!
48 * The configuration file has now the following format<br>
49 * <predefinedPluginName> <pathAndLibraryName> <loadingType> <initType>
51 * <b>Predefined plugin name</b><br>
52 * Use one of the following names:
53 * - early => predefined custom library for early persistence
54 * - secure => predefined custom library for secure persistence
55 * - emergency => predefined custom library for emengency persistence
56 * - hwinfo => predefined custom library for hw information
57 * - custom1 => custom library 1
58 * - custom2 => custom library 2
59 * - custom3 => custom library 3
61 * <b>Path and library name:</b><br>
62 * The name and path of the library
64 * <b>Valid loading type:</b>
65 * - "init" ==> if the plugin must be laoding during the pclInitLibrary function
66 * - "on" ==> if on demand laoding of the plugin is requested. The plugin will be loaded
67 * when a plugin function will be loaded the first time
70 * - sync ==> use the "plugin_init" function for plugin initialization
71 * - async ==> use the "plugin_init_async" function for plugin initialization
74 * hwinfo /usr/local/lib/libhwinfoperscustom.so init async
77 * Make sure that there is only ONE blank between each entry and no blank at the end of the file.
78 * The parser has been optimized for speed, so there is less error checking.
87 /** \defgroup PCL_DEFINES_API Defines, Struct, Enum
91 #define PERSIST_API_INTERFACE_VERSION (0x01030000U)
96 /** \defgroup SHUTDOWN_TYPE notifications type definitions
97 * according to Node State Manager Component
101 #define PCL_SHUTDOWN_TYPE_FAST 2 /// Client registered for fast lifecycle shutdown
102 #define PCL_SHUTDOWN_TYPE_NORMAL 1 /// Client registered for normal lifecycle shutdown
103 #define PCL_SHUTDOWN_TYPE_NONE 0 /// Client does not register to lifecycle shutdown
107 /** \defgroup PCL_OVERALL functions for Library initialization
108 * The following functions have to be called for library initialization
113 #define PCL_SHUTDOWN 1 /// trigger shutdown
114 #define PCL_SHUTDOWN_CANEL 0 /// cancel shutdown
118 * @brief initialize client library.
119 * This function will be called by the process using the PCL during startup phase.
121 * @attention This function is currently N O T part of the GENIVI compliance specification
123 * @param appname application name, the name must be a unique name in the system
124 * @param shutdownMode shutdown mode ::PCL_SHUTDOWN_TYPE_FAST or ::PCL_SHUTDOWN_TYPE_NORMAL
126 * @return positive value: success;
127 * On error a negative value will be returned with the following error codes:
128 * ::EPERS_NOT_INITIALIZED, ::EPERS_INIT_DBUS_MAINLOOP,
129 * ::EPERS_REGISTER_LIFECYCLE, ::EPERS_REGISTER_ADMIN
131 int pclInitLibrary(const char* appname, int shutdownMode);
135 * @brief deinitialize client library
136 * This function will be called during the shutdown phase of the process which uses the PCL.
138 * @attention This function is currently N O T part of the GENIVI compliance specification
140 * @return positive value: success;
141 * On error a negative value will be returned.
143 int pclDeinitLibrary(void);
149 * @brief pclLifecycleSet client library
150 * This function can be called if to flush and write back the data form cache to memory device.
151 * The function is only available if PCL_SHUTDOWN_TYPE_NONE has been used in pclInitLibrary.
153 * @attention This function is currently N O T part of the GENIVI compliance specification
154 * @attention In order to prevent misuse of this function the cancel shutdown request
155 * can only be called 3 times per lifecycle.
156 * If this function has been called by an application more then 3 times the application
157 * will not be able to store it's data anymore during the current lifecycle.
158 * The application isn't fully operable in this lifecycle anymore.
159 * In the next lifecycle the application can store data again until the limit above
162 * @parm PCL_SHUTDOWN for write back data when shutdown is requested,
163 * and PCL_SHUTDOWN_CANEL when shutdown cancel request has been received.
165 * @return positive value: success;
166 * On error a negative value will be returned with the following error codes:
167 * ::EPERS_COMMON, ::EPERS_MAX_CANCEL_SHUTDOWN, ::EPERS_SHTDWN_NO_PERMIT
169 int pclLifecycleSet(int shutdown);
178 /** \} */ /* End of API */
179 /** \} */ /* End of MODULE */
182 #endif /* PERSISTENCY_CLIENT_LIBRARY_H */