Azure IoT common library
Dependents: STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more
xio.c
- Committer:
- Azure.IoT Build
- Date:
- 2016-04-08
- Revision:
- 0:fa2de1b79154
- Child:
- 6:c55b013dfc2a
File content as of revision 0:fa2de1b79154:
// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. #include <stdlib.h> #ifdef _CRTDBG_MAP_ALLOC #include <crtdbg.h> #endif #include <stddef.h> #include "azure_c_shared_utility/gballoc.h" #include "azure_c_shared_utility/xio.h" typedef struct XIO_INSTANCE_TAG { const IO_INTERFACE_DESCRIPTION* io_interface_description; XIO_HANDLE concrete_xio_handle; } XIO_INSTANCE; XIO_HANDLE xio_create(const IO_INTERFACE_DESCRIPTION* io_interface_description, const void* xio_create_parameters, LOGGER_LOG logger_log) { XIO_INSTANCE* xio_instance; /* Codes_SRS_XIO_01_003: [If the argument io_interface_description is NULL, xio_create shall return NULL.] */ if ((io_interface_description == NULL) || /* Codes_SRS_XIO_01_004: [If any io_interface_description member is NULL, xio_create shall return NULL.] */ (io_interface_description->concrete_io_create == NULL) || (io_interface_description->concrete_io_destroy == NULL) || (io_interface_description->concrete_io_open == NULL) || (io_interface_description->concrete_io_close == NULL) || (io_interface_description->concrete_io_send == NULL) || (io_interface_description->concrete_io_dowork == NULL) || (io_interface_description->concrete_io_setoption == NULL)) { xio_instance = NULL; } else { xio_instance = (XIO_INSTANCE*)malloc(sizeof(XIO_INSTANCE)); /* Codes_SRS_XIO_01_017: [If allocating the memory needed for the IO interface fails then xio_create shall return NULL.] */ if (xio_instance != NULL) { /* Codes_SRS_XIO_01_001: [xio_create shall return on success a non-NULL handle to a new IO interface.] */ xio_instance->io_interface_description = io_interface_description; /* Codes_SRS_XIO_01_002: [In order to instantiate the concrete IO implementation the function concrete_io_create from the io_interface_description shall be called, passing the xio_create_parameters and logger_log arguments.] */ xio_instance->concrete_xio_handle = xio_instance->io_interface_description->concrete_io_create((void*)xio_create_parameters, logger_log); /* Codes_SRS_XIO_01_016: [If the underlying concrete_io_create call fails, xio_create shall return NULL.] */ if (xio_instance->concrete_xio_handle == NULL) { free(xio_instance); xio_instance = NULL; } } } return (XIO_HANDLE)xio_instance; } void xio_destroy(XIO_HANDLE xio) { /* Codes_SRS_XIO_01_007: [If the argument io is NULL, xio_destroy shall do nothing.] */ if (xio != NULL) { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_01_006: [xio_destroy shall also call the concrete_io_destroy function that is member of the io_interface_description argument passed to xio_create, while passing as argument to concrete_io_destroy the result of the underlying concrete_io_create handle that was called as part of the xio_create call.] */ xio_instance->io_interface_description->concrete_io_destroy(xio_instance->concrete_xio_handle); /* Codes_SRS_XIO_01_005: [xio_destroy shall free all resources associated with the IO handle.] */ free(xio_instance); } } int xio_open(XIO_HANDLE xio, ON_IO_OPEN_COMPLETE on_io_open_complete, void* on_io_open_complete_context, ON_BYTES_RECEIVED on_bytes_received, void* on_bytes_received_context, ON_IO_ERROR on_io_error, void* on_io_error_context) { int result; if (xio == NULL) { /* Codes_SRS_XIO_01_021: [If handle is NULL, xio_open shall return a non-zero value.] */ result = __LINE__; } else { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_01_019: [xio_open shall call the specific concrete_xio_open function specified in xio_create, passing callback function and context arguments for three events: open completed, bytes received, and IO error.] */ if (xio_instance->io_interface_description->concrete_io_open(xio_instance->concrete_xio_handle, on_io_open_complete, on_io_open_complete_context, on_bytes_received, on_bytes_received_context, on_io_error, on_io_error_context) != 0) { /* Codes_SRS_XIO_01_022: [If the underlying concrete_io_open fails, xio_open shall return a non-zero value.] */ result = __LINE__; } else { /* Codes_SRS_XIO_01_020: [On success, xio_open shall return 0.] */ result = 0; } } return result; } int xio_close(XIO_HANDLE xio, ON_IO_CLOSE_COMPLETE on_io_close_complete, void* callback_context) { int result; if (xio == NULL) { /* Codes_SRS_XIO_01_025: [If handle is NULL, xio_close shall return a non-zero value.] */ result = __LINE__; } else { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_01_023: [xio_close shall call the specific concrete_io_close function specified in xio_create.] */ if (xio_instance->io_interface_description->concrete_io_close(xio_instance->concrete_xio_handle, on_io_close_complete, callback_context) != 0) { /* Codes_SRS_XIO_01_026: [If the underlying concrete_io_close fails, xio_close shall return a non-zero value.] */ result = __LINE__; } else { /* Codes_SRS_XIO_01_024: [On success, xio_close shall return 0.] */ result = 0; } } return result; } int xio_send(XIO_HANDLE xio, const void* buffer, size_t size, ON_SEND_COMPLETE on_send_complete, void* callback_context) { int result; /* Codes_SRS_XIO_01_011: [No error check shall be performed on buffer and size.] */ /* Codes_SRS_XIO_01_010: [If handle is NULL, xio_send shall return a non-zero value.] */ if (xio == NULL) { result = __LINE__; } else { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_01_008: [xio_send shall pass the sequence of bytes pointed to by buffer to the concrete IO implementation specified in xio_create, by calling the concrete_io_send function while passing down the buffer and size arguments to it.] */ /* Codes_SRS_XIO_01_009: [On success, xio_send shall return 0.] */ /* Codes_SRS_XIO_01_015: [If the underlying concrete_io_send fails, xio_send shall return a non-zero value.] */ /* Codes_SRS_XIO_01_027: [xio_send shall pass to the concrete_io_send function the on_send_complete and callback_context arguments.] */ result = xio_instance->io_interface_description->concrete_io_send(xio_instance->concrete_xio_handle, buffer, size, on_send_complete, callback_context); } return result; } void xio_dowork(XIO_HANDLE xio) { /* Codes_SRS_XIO_01_018: [When the handle argument is NULL, xio_dowork shall do nothing.] */ if (xio != NULL) { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_01_012: [xio_dowork shall call the concrete XIO implementation specified in xio_create, by calling the concrete_io_dowork function.] */ xio_instance->io_interface_description->concrete_io_dowork(xio_instance->concrete_xio_handle); } } int xio_setoption(XIO_HANDLE xio, const char* optionName, const void* value) { int result; /* Codes_SRS_XIO_03_030: [If the xio argumnent or the optionName argument is NULL, xio_setoption shall return a non-zero value.] */ if (xio == NULL || optionName == NULL) { result = __LINE__; } else { XIO_INSTANCE* xio_instance = (XIO_INSTANCE*)xio; /* Codes_SRS_XIO_003_028: [xio_setoption shall pass the optionName and value to the concrete IO implementation specified in xio_create by invoking the concrete_xio_setoption function.] */ /* Codes_SRS_XIO_03_029: [xio_setoption shall return 0 upon success.] */ /* Codes_SRS_XIO_03_031: [If the underlying concrete_xio_setoption fails, xio_setOption shall return a non-zero value.] */ result = xio_instance->io_interface_description->concrete_io_setoption(xio_instance->concrete_xio_handle, optionName, value); } return result; }