Structure of client program

The structure of a client program is very close to the structure of usual DIET client. The general algorithm is as follow:

diet_initialize

create the workflow profile

call the method diet_wf_call

if success retrieve the results

free the workflow profile

diet_finalize

The table 14.1 shows a description of the different methods provided by the DIET workflow API.

Table 14.1: Diet workflow API

Workflow function	Description
diet_wf_desc_t* diet_wf_profile_alloc(const char* wf_file_name);	allocate a workflow profile to be used for a workflow submission. wf_file_name : the file name containing the workflow XML description.
void diet_wf_profile_free(diet_wf_desc_t * profile);	free the workflow profile.
diet_error_t diet_wf_call(diet_wf_desc_t* wf_profile);	execute the workflow associated to profile wf_profile.
int diet_wf_scalar_get(const char * id, void** value);	Retrieve a workflow scalar result. id : the output port identifier.
int diet_wf_string_get(const char * id, char** value);	Retrieve a workflow string result. id : the output port identifier.
int diet_wf_file_get(const char * id, size_t* size, char** path);	Retrieve a workflow file result. id : the output port identifier.
int diet_wf_matrix_get(id, (void**)value, nb_rows, nb_cols, order)	Retrieve a workflow matrix result. id : the output port identifier.
void void get_all_results();	print all the results of the current executed workflow.