le_avdata_interface.h
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36 * Data is setup as @b Assets — a collection of fields that can be managed by the AirVantage43 * - @b variable allowing the AirVantage server to read the value, and can be read/writtten to by an App.44 * - @b setting allowing the AirVantage server to read/write the value, and can be read/written to by an App.71 * @note If a user enters a value 0 for float data type, an error will be returned (LE_NOT_FOUND),72 * as the system infers 0 as an integer value and the data type doesn't match. 0.0 needs to be set82 * Registered handlers are called only when activities from AV server occurs. Client activities do85 * A handler registered with a command field is invoked with an optional argument list sent from the90 * A handler registered with a command field must call the le_avdata_ReplyExecResult() at the end of154 * namespace. In order to query any paths created under an application namespace, user must append155 * the app name in front of the request on the server side. If creating asset data under application156 * namespace is not desired, users must call le_avdata_SetNamespace() and set the value to global.158 * space. All asset data API will use the last namespace set until the function is called again and162 * regardless of the namespace used to create it. The asset data settings are restored lazily when190 * "/test/resourceA" with a value of 2. A read request from the server on "<appName>/test/resourceA"191 * will return 1; whereas a read request on "/test/resourceA" will return 2. A read request from the192 * server on a parent node will result in reading multiple resources together. For example, a read198 * This feature enables user Apps to collect and keep in memory data when the device is off-line and213 * This code sample shows how to collect data and send to the server (assuming session is opened)238 * utcMilliSec = (uint64_t)(tv.tv_sec) * 1000 + (uint64_t)(tv.tv_usec) / 1000; // get current time256 * le_avdata_AddSessionStateHandler() and le_avdata_RemoveSessionStateHandler() can be used to add299 //--------------------------------------------------------------------------------------------------303 //--------------------------------------------------------------------------------------------------306 //--------------------------------------------------------------------------------------------------309 * Connect the current client thread to the service providing this API. Block until the service is312 * For each thread that wants to use this API, either ConnectService or TryConnectService must be313 * called before any other functions in this API. Normally, ConnectService is automatically called318 //--------------------------------------------------------------------------------------------------324 //--------------------------------------------------------------------------------------------------327 * Try to connect the current client thread to the service providing this API. Return with an error330 * For each thread that wants to use this API, either ConnectService or TryConnectService must be331 * called before any other functions in this API. Normally, ConnectService is automatically called340 * - LE_NOT_PERMITTED if the client interface is not bound to any service (doesn't have a binding).343 //--------------------------------------------------------------------------------------------------349 //--------------------------------------------------------------------------------------------------353 * When a server connection is lost, call this handler then exit with LE_FATAL. If a program wants356 //--------------------------------------------------------------------------------------------------363 //--------------------------------------------------------------------------------------------------369 * longer a connection to the service, and the functions in this API can't be used. For details, see374 //--------------------------------------------------------------------------------------------------381 //--------------------------------------------------------------------------------------------------385 //--------------------------------------------------------------------------------------------------388 //--------------------------------------------------------------------------------------------------391 //--------------------------------------------------------------------------------------------------394 //--------------------------------------------------------------------------------------------------398 //--------------------------------------------------------------------------------------------------401 //--------------------------------------------------------------------------------------------------404 //--------------------------------------------------------------------------------------------------407 //--------------------------------------------------------------------------------------------------414 //--------------------------------------------------------------------------------------------------427 //--------------------------------------------------------------------------------------------------431 //--------------------------------------------------------------------------------------------------441 //--------------------------------------------------------------------------------------------------445 //--------------------------------------------------------------------------------------------------456 //--------------------------------------------------------------------------------------------------460 //--------------------------------------------------------------------------------------------------477 //--------------------------------------------------------------------------------------------------482 //--------------------------------------------------------------------------------------------------493 //--------------------------------------------------------------------------------------------------497 //--------------------------------------------------------------------------------------------------501 //--------------------------------------------------------------------------------------------------505 //--------------------------------------------------------------------------------------------------509 //--------------------------------------------------------------------------------------------------513 //--------------------------------------------------------------------------------------------------517 //--------------------------------------------------------------------------------------------------521 //--------------------------------------------------------------------------------------------------525 //--------------------------------------------------------------------------------------------------529 //--------------------------------------------------------------------------------------------------540 //--------------------------------------------------------------------------------------------------544 //--------------------------------------------------------------------------------------------------548 //--------------------------------------------------------------------------------------------------550 * Handler for resource activity. Note that the path returned by this event follows the unix format554 //--------------------------------------------------------------------------------------------------556 (567 //--------------------------------------------------------------------------------------------------571 //--------------------------------------------------------------------------------------------------573 (580 //--------------------------------------------------------------------------------------------------584 //--------------------------------------------------------------------------------------------------586 (593 //--------------------------------------------------------------------------------------------------601 * For "commands", the handler function must call the "ReplyExecResult" function to send the command605 //--------------------------------------------------------------------------------------------------616 //--------------------------------------------------------------------------------------------------620 //--------------------------------------------------------------------------------------------------627 //--------------------------------------------------------------------------------------------------629 * Create an asset data with the provided path. Note that asset data type and value are determined630 * upon the first call to a Set function. When an asset data is created, it contains a null value,639 //--------------------------------------------------------------------------------------------------648 //--------------------------------------------------------------------------------------------------656 //--------------------------------------------------------------------------------------------------663 //--------------------------------------------------------------------------------------------------672 //--------------------------------------------------------------------------------------------------679 //--------------------------------------------------------------------------------------------------690 //--------------------------------------------------------------------------------------------------699 //--------------------------------------------------------------------------------------------------708 //--------------------------------------------------------------------------------------------------717 //--------------------------------------------------------------------------------------------------728 //--------------------------------------------------------------------------------------------------737 //--------------------------------------------------------------------------------------------------746 //--------------------------------------------------------------------------------------------------755 //--------------------------------------------------------------------------------------------------766 //--------------------------------------------------------------------------------------------------775 //--------------------------------------------------------------------------------------------------784 //--------------------------------------------------------------------------------------------------793 //--------------------------------------------------------------------------------------------------805 //--------------------------------------------------------------------------------------------------816 //--------------------------------------------------------------------------------------------------825 //--------------------------------------------------------------------------------------------------834 //--------------------------------------------------------------------------------------------------842 //--------------------------------------------------------------------------------------------------853 //--------------------------------------------------------------------------------------------------861 //--------------------------------------------------------------------------------------------------872 //--------------------------------------------------------------------------------------------------880 //--------------------------------------------------------------------------------------------------891 //--------------------------------------------------------------------------------------------------900 //--------------------------------------------------------------------------------------------------913 //--------------------------------------------------------------------------------------------------915 * Get the length (excluding terminating null byte) of the string argument of the specified name.921 //--------------------------------------------------------------------------------------------------932 //--------------------------------------------------------------------------------------------------934 * Reply command execution result to AVC Daemon, which can then respond to AV server. This function935 * MUST be called at the end of a command execution, in order for AV server to be notified about the938 //--------------------------------------------------------------------------------------------------947 //--------------------------------------------------------------------------------------------------959 //--------------------------------------------------------------------------------------------------970 //--------------------------------------------------------------------------------------------------981 //--------------------------------------------------------------------------------------------------994 //--------------------------------------------------------------------------------------------------1000 //--------------------------------------------------------------------------------------------------1006 //--------------------------------------------------------------------------------------------------1010 //--------------------------------------------------------------------------------------------------1017 //--------------------------------------------------------------------------------------------------1021 * @note The client will be terminated if the recordRef is not valid, or the resource doesn't exist1028 //--------------------------------------------------------------------------------------------------1041 //--------------------------------------------------------------------------------------------------1045 * @note The client will be terminated if the recordRef is not valid, or the resource doesn't exist1052 //--------------------------------------------------------------------------------------------------1065 //--------------------------------------------------------------------------------------------------1069 * @note The client will be terminated if the recordRef is not valid, or the resource doesn't exist1076 //--------------------------------------------------------------------------------------------------1089 //--------------------------------------------------------------------------------------------------1093 * @note The client will be terminated if the recordRef is not valid, or the resource doesn't exist1100 //--------------------------------------------------------------------------------------------------1113 //--------------------------------------------------------------------------------------------------1127 //--------------------------------------------------------------------------------------------------1138 //--------------------------------------------------------------------------------------------------1144 //--------------------------------------------------------------------------------------------------1153 //--------------------------------------------------------------------------------------------------1157 //--------------------------------------------------------------------------------------------------1164 //--------------------------------------------------------------------------------------------------1172 //--------------------------------------------------------------------------------------------------1178 //--------------------------------------------------------------------------------------------------1183 //--------------------------------------------------------------------------------------------------le_result_t le_avdata_PushStream(const char *LE_NONNULL path, int fd, le_avdata_CallbackResultFunc_t handlerPtr, void *contextPtr)void(* le_avdata_CallbackResultFunc_t)(le_avdata_PushStatus_t status, void *contextPtr)Definition: le_avdata_interface.h:573le_result_t le_avdata_GetInt(const char *LE_NONNULL path, int32_t *valuePtr)void(* le_avdata_SessionStateHandlerFunc_t)(le_avdata_SessionState_t sessionState, void *contextPtr)Definition: le_avdata_interface.h:586le_result_t le_avdata_GetFloat(const char *LE_NONNULL path, double *valuePtr)le_result_t le_avdata_CreateResource(const char *LE_NONNULL path, le_avdata_AccessMode_t accessMode)le_result_t le_avdata_RecordFloat(le_avdata_RecordRef_t recordRef, const char *LE_NONNULL path, double value, uint64_t timestamp)le_result_t le_avdata_SetNull(const char *LE_NONNULL path)le_avdata_SessionStateHandlerRef_t le_avdata_AddSessionStateHandler(le_avdata_SessionStateHandlerFunc_t handlerPtr, void *contextPtr)void le_avdata_ReleaseSession(le_avdata_RequestSessionObjRef_t requestRef)struct le_avdata_RequestSessionObj * le_avdata_RequestSessionObjRef_tDefinition: le_avdata_interface.h:522void le_avdata_RemoveResourceEventHandler(le_avdata_ResourceEventHandlerRef_t handlerRef)le_result_t le_avdata_RecordString(le_avdata_RecordRef_t recordRef, const char *LE_NONNULL path, const char *LE_NONNULL value, uint64_t timestamp)void le_avdata_DisconnectService(void)le_result_t le_avdata_GetBool(const char *LE_NONNULL path, bool *valuePtr)le_result_t le_avdata_PushRecord(le_avdata_RecordRef_t recordRef, le_avdata_CallbackResultFunc_t handlerPtr, void *contextPtr)void le_avdata_ReplyExecResult(le_avdata_ArgumentListRef_t argumentListRef, le_result_t result)le_result_t le_avdata_Push(const char *LE_NONNULL path, le_avdata_CallbackResultFunc_t handlerPtr, void *contextPtr)le_result_t le_avdata_GetStringArgLength(le_avdata_ArgumentListRef_t argumentListRef, const char *LE_NONNULL argName, int32_t *strArgLenPtr)le_avdata_RequestSessionObjRef_t le_avdata_RequestSession(void)void(* le_avdata_DisconnectHandler_t)(void *)Definition: le_avdata_interface.h:304le_result_t le_avdata_SetString(const char *LE_NONNULL path, const char *LE_NONNULL value)le_result_t le_avdata_GetBoolArg(le_avdata_ArgumentListRef_t argumentListRef, const char *LE_NONNULL argName, bool *boolArgPtr)le_result_t le_avdata_RecordInt(le_avdata_RecordRef_t recordRef, const char *LE_NONNULL path, int32_t value, uint64_t timestamp)le_result_t le_avdata_RecordBool(le_avdata_RecordRef_t recordRef, const char *LE_NONNULL path, bool value, uint64_t timestamp)void le_avdata_ConnectService(void)le_result_t le_avdata_GetString(const char *LE_NONNULL path, char *value, size_t valueSize)le_result_t le_avdata_GetStringArg(le_avdata_ArgumentListRef_t argumentListRef, const char *LE_NONNULL argName, char *strArg, size_t strArgSize)struct le_avdata_ResourceEventHandler * le_avdata_ResourceEventHandlerRef_tDefinition: le_avdata_interface.h:506le_result_t le_avdata_TryConnectService(void)void(* le_avdata_ResourceHandlerFunc_t)(const char *LE_NONNULL path, le_avdata_AccessType_t accessType, le_avdata_ArgumentListRef_t argumentListRef, void *contextPtr)Definition: le_avdata_interface.h:556void le_avdata_SetServerDisconnectHandler(le_avdata_DisconnectHandler_t disconnectHandler, void *contextPtr)le_result_t le_avdata_SetFloat(const char *LE_NONNULL path, double value)le_result_t le_avdata_GetFloatArg(le_avdata_ArgumentListRef_t argumentListRef, const char *LE_NONNULL argName, double *floatArgPtr)struct le_avdata_SessionStateHandler * le_avdata_SessionStateHandlerRef_tDefinition: le_avdata_interface.h:545struct le_avdata_ArgumentList * le_avdata_ArgumentListRef_tDefinition: le_avdata_interface.h:498le_result_t le_avdata_SetNamespace(le_avdata_Namespace_t _namespace)struct le_avdata_Record * le_avdata_RecordRef_tDefinition: le_avdata_interface.h:514le_avdata_ResourceEventHandlerRef_t le_avdata_AddResourceEventHandler(const char *LE_NONNULL path, le_avdata_ResourceHandlerFunc_t handlerPtr, void *contextPtr)le_result_t le_avdata_GetIntArg(le_avdata_ArgumentListRef_t argumentListRef, const char *LE_NONNULL argName, int32_t *intArgPtr)le_result_t le_avdata_SetInt(const char *LE_NONNULL path, int32_t value)le_avdata_RecordRef_t le_avdata_CreateRecord(void)void le_avdata_DeleteRecord(le_avdata_RecordRef_t recordRef)le_result_t le_avdata_SetBool(const char *LE_NONNULL path, bool value)read/write (server) or read/write (client)Definition: le_avdata_interface.h:419void le_avdata_RemoveSessionStateHandler(le_avdata_SessionStateHandlerRef_t handlerRef)