/*
* The read function gets called every time the routing service
* gets notified of data available by the function on_data_available
* of every stream reader's listener
*/
void RTI_RoutingServiceFileStreamReader_read(
RTI_RoutingServiceStreamReader stream_reader,
RTI_RoutingServiceSample ** sample_list,
RTI_RoutingServiceSampleInfo ** info_list,
int * count,
RTI_RoutingServiceEnvironment * env)
{
int i = 0, sample_counter = 0;
struct DDS_DynamicData * sample = NULL;
struct DDS_DynamicDataProperty_t dynamic_data_props =
DDS_DynamicDataProperty_t_INITIALIZER;
struct RTI_RoutingServiceFileStreamReader * self =
(struct RTI_RoutingServiceFileStreamReader *) stream_reader;
/*
* We don't provide sample info in this adapter, which
* is an optional feature
*/
*info_list = NULL;
/*
* if the function read it is called because we have discovery data,
* the pointer or the stream reader that calls the
*/
if ((self->connection->input_discovery_reader == self)) {
int new_discovered_samples = 0;
fprintf(stdout,"DiscoveryReader: called function read "
"for input discovery\n");
/*
* we keep track in the checking thread of the number of file names
* inside the discovery_data array, every new discovered file, we
* increase this counter (discovery_data_counter), and we keep track
* of the files we have already read, and created the relative streams,
* with the discovery_data_counter_read, subtracting one to another, we
* know how many new discovered files we have
*/
new_discovered_samples = self->discovery_data_counter -
self->discovery_data_counter_read;
/*
* we receive as a parameter the pointer to an array, and we need to
* allocate memory for it, first for the array, then for the single
* elements we put in it.
*/
*sample_list = calloc(
new_discovered_samples,
sizeof(struct RTI_RoutingServiceStreamInfo *));
if (*sample_list == NULL) {
RTI_RoutingServiceEnvironment_set_error(
env, "Failure creating dynamic data sample in read "
"function for discovery");
return;
}
/*
* inside this loop we create the sample info structures,
* to describe the new stream to be created
*/
for (i = 0; i < new_discovered_samples; i++) {
struct RTI_RoutingServiceStreamInfo *streaminfo;
/*
* here we create the stream info type, passing as string name
* the name of the file taken from the discovery_data array
* filled by the checking thread.
*/
streaminfo = RTI_RoutingServiceStreamInfo_new_discovered(
self->discovery_data[self->discovery_data_counter_read],
"TextLine",/*typename*/
RTI_ROUTING_SERVICE_TYPE_REPRESENTATION_DYNAMIC_TYPE,
self->type_code);
if (streaminfo == NULL) {
continue;
}
(*sample_list)[*count] = streaminfo;
/*
* we increment the count of the sample info generated and returned
* inside the sampli_list dynamic array.
*/
(*count)++;
/*
* we increment the index as we have already read that
* position of the array
*/
self->discovery_data_counter_read++;
}
} else {
fprintf(stdout,"StreamReader: called function read for data\n");
*sample_list = calloc(self->samples_per_read,sizeof(DDS_DynamicData *));
if (*sample_list == NULL) {
RTI_RoutingServiceEnvironment_set_error(
env,"Failure creating dynamic data "
"sample list in read function");
return;
}
/*
* Read as many times as samples_per_read
* (or less if we encounter the end of file)
*/
for (i = 0; i < self->samples_per_read && !feof(self->file); i++) {
/*
* Create a dynamic data sample for every buffer we read. We use
* the type we received when the stream reader was created
*/
sample = DDS_DynamicData_new(self->type_code, &dynamic_data_props);
if (sample == NULL) {
RTI_RoutingServiceEnvironment_set_error(
env,
"Failure creating dynamic data sample in read function");
RTI_RoutingServiceFileStreamReader_freeDynamicDataArray(
(struct DDS_DynamicData **) *sample_list, sample_counter);
*sample_list = NULL;
return;
}
/*
* Fill the dynamic data sample fields
* with the buffer read from the file.
*/
if ( !RTI_RoutingServiceFileAdapter_read_sample(
sample, self->file,
env)) {
/* No sample read */
DDS_DynamicData_delete(sample);
continue;
}
(*sample_list)[sample_counter++] = sample;
}
/* Set the count to the actual number of samples we have generated */
*count = sample_counter;
}
/*
* If there are no samples to read we free the memory allocated straight
* away as the routing service wouldn't call return_loan
*/
if (*count == 0) {
/* If we report zero samples we have to free the array now */
free(*sample_list);
*sample_list = NULL;
}
}
int main() {
struct DDS_TypeCode *inner_tc = NULL;
struct DDS_TypeCode *outer_tc = NULL;
struct DDS_TypeCodeFactory *factory = NULL;
DDS_ExceptionCode_t err;
DDS_ReturnCode_t retcode;
int ret = -1;
DDS_DynamicData *outer_data = NULL;
DDS_DynamicData *inner_data = NULL;
DDS_DynamicData *bounded_data = NULL;
/* Getting a reference to the type code factory */
factory = DDS_TypeCodeFactory_get_instance();
if (factory == NULL) {
fprintf(stderr, "! Unable to get type code factory singleton\n");
goto fail;
}
/* Creating the typeCode of the inner_struct */
inner_tc = inner_struct_get_typecode(factory);
if (inner_tc == NULL) {
fprintf(stderr, "! Unable to create typeCode\n");
goto fail;
}
/* Creating the typeCode of the outer_struct that contains an inner_struct */
outer_tc = outer_struct_get_typecode(factory);
if (inner_tc == NULL) {
fprintf(stderr, "! Unable to create typeCode\n");
goto fail;
}
printf(" Connext Dynamic Data Nested Struct Example \n"
"--------------------------------------------\n");
printf(" Data Types\n"
"------------------\n");
DDS_TypeCode_print_IDL(inner_tc, 0, &err);
DDS_TypeCode_print_IDL(outer_tc, 0, &err);
/* Now, we create a dynamicData instance for each type */
outer_data = DDS_DynamicData_new(outer_tc,
&DDS_DYNAMIC_DATA_PROPERTY_DEFAULT);
if (outer_data == NULL) {
fprintf(stderr, "! Unable to create outer dynamicData\n");
goto fail;
}
inner_data = DDS_DynamicData_new(inner_tc,
&DDS_DYNAMIC_DATA_PROPERTY_DEFAULT);
if (outer_data == NULL) {
fprintf(stderr, "! Unable to create inner dynamicData\n");
goto fail;
}
/* Setting the inner data */
retcode = DDS_DynamicData_set_double(inner_data, "x",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 3.14159);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value 'x' in the inner struct \n");
goto fail;
}
retcode = DDS_DynamicData_set_double(inner_data, "y",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 2.71828);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value 'y' in the inner struct\n");
goto fail;
}
printf("\n\n get/set_complex_member API\n"
"----------------------------\n");
/* Using set_complex_member, we copy inner_data values in inner_struct of
* outer_data */
printf("Setting initial values of outer_data with "
"set_complex_member()\n");
retcode = DDS_DynamicData_set_complex_member(outer_data, "inner",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, inner_data);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set complex struct value "
"(member inner in the outer struct)\n");
goto fail;
}
DDS_DynamicData_print(outer_data, stdout, 1);
retcode = DDS_DynamicData_clear_all_members(inner_data);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to clear all member in the inner data\n");
goto fail;
}
printf("\n + get_complex_member() called\n");
retcode = DDS_DynamicData_get_complex_member(outer_data, inner_data,
"inner", DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to get complex struct value "
"(member inner in the outer struct)\n");
goto fail;
}
printf("\n + inner_data value\n");
DDS_DynamicData_print(inner_data, stdout, 1);
/* get_complex_member made a copy of the inner_struct. If we modify
* inner_data values, outer_data inner_struct WILL NOT be modified. */
printf("\n + setting new values to inner_data\n");
retcode = DDS_DynamicData_set_double(inner_data, "x",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 1.00000);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value 'x' in the inner struct \n");
goto fail;
}
retcode = DDS_DynamicData_set_double(inner_data, "y",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 0.00001);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value 'y' in the inner struct \n");
goto fail;
}
DDS_DynamicData_print(inner_data, stdout, 1);
/* Current value of outer_data
* outer_data:
* inner:
* x: 3.141590
* y: 2.718280
*
* inner_data:
* x: 1.000000
* y: 0.000010
*/
printf("\n + current outer_data value \n");
DDS_DynamicData_print(outer_data, stdout, 1);
/* Bind/Unbind member API */
printf("\n\n bind/unbind API\n"
"------------------\n");
printf("Creating a new dynamic data called bounded_data\n");
bounded_data = DDS_DynamicData_new(NULL,
&DDS_DYNAMIC_DATA_PROPERTY_DEFAULT);
if (bounded_data == NULL) {
fprintf(stderr, "! Unable to create new dynamic data\n");
goto fail;
}
printf("\n + binding bounded_data to outer_data's inner_struct\n");
/* Using bind_complex_member, we do not copy inner_struct, but bind it.
* So, if we modify bounded_data, the inner member inside outer_data WILL
* also be modified */
retcode = DDS_DynamicData_bind_complex_member(outer_data, bounded_data,
"inner", DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to bind the structs\n");
goto fail;
}
DDS_DynamicData_print(bounded_data, stdout, 1);
printf("\n + setting new values to bounded_data\n");
retcode = DDS_DynamicData_set_double(bounded_data, "x",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 1.00000);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value to 'x' with the bounded data\n");
goto fail;
}
retcode = DDS_DynamicData_set_double(bounded_data, "y",
DDS_DYNAMIC_DATA_MEMBER_ID_UNSPECIFIED, 0.00001);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to set value to 'x' with the bounded data\n");
goto fail;
}
/* Current value of outer data
* outer:
* inner:
* x: 1.000000
* y: 0.000010
*/
DDS_DynamicData_print(bounded_data, stdout, 1);
retcode = DDS_DynamicData_unbind_complex_member(outer_data, bounded_data);
if (retcode != DDS_RETCODE_OK) {
fprintf(stderr, "! Unable to unbind the data\n");
goto fail;
}
printf("\n + current outer_data value \n");
DDS_DynamicData_print(outer_data, stdout, 1);
ret = 1;
fail:
if (inner_tc != NULL) {
DDS_TypeCodeFactory_delete_tc(factory, inner_tc, NULL);
}
if (outer_tc != NULL) {
DDS_TypeCodeFactory_delete_tc(factory, outer_tc, NULL);
}
if (inner_data != NULL) {
DDS_DynamicData_delete(inner_data);
}
if (outer_data != NULL) {
DDS_DynamicData_delete(outer_data);
}
if (bounded_data != NULL) {
DDS_DynamicData_delete(bounded_data);
}
return ret;
}