kaa_error_t kaa_start(kaa_context_t *kaa_context)
{
KAA_RETURN_IF_NIL(kaa_context, KAA_ERR_BADPARAM);
KAA_LOG_INFO(kaa_context->logger, KAA_ERR_NONE, "Going to start Kaa endpoint");
kaa_transport_channel_interface_t *bootstrap_channel = kaa_channel_manager_get_transport_channel(
kaa_context->channel_manager, KAA_EXTENSION_BOOTSTRAP);
if (bootstrap_channel) {
const kaa_extension_id bootstrap_service[] = { KAA_EXTENSION_BOOTSTRAP };
kaa_error_t error = bootstrap_channel->sync_handler(bootstrap_channel->context, bootstrap_service, 1);
if (error) {
KAA_LOG_ERROR(kaa_context->logger, error, "Failed to sync Bootstrap service. Try again later");
return error;
}
} else {
KAA_LOG_FATAL(kaa_context->logger, KAA_ERR_NOT_FOUND, "Could not find Bootstrap transport channel");
return KAA_ERR_NOT_FOUND;
}
return KAA_ERR_NONE;
}
kaa_error_t kaa_init(kaa_context_t **kaa_context_p)
{
KAA_RETURN_IF_NIL(kaa_context_p, KAA_ERR_BADPARAM);
// Initialize logger
kaa_logger_t *logger = NULL;
kaa_error_t error = kaa_log_create(&logger, KAA_MAX_LOG_MESSAGE_LENGTH, KAA_MAX_LOG_LEVEL, NULL); // TODO: make log destination configurable
if (error) {
return error;
}
KAA_LOG_INFO(logger, KAA_ERR_NONE, "Kaa SDK version %s, commit hash %s", KAA_BUILD_VERSION, KAA_BUILD_COMMIT_HASH);
// Initialize general Kaa context
error = kaa_context_create(kaa_context_p, logger);
if (error) {
KAA_LOG_FATAL(logger, error, "Failed to create Kaa context");
*kaa_context_p = NULL;
return error;
}
// Initialize endpoint identity
uint8_t *sha1 = NULL;
size_t sha1_size = 0;
error = kaa_init_keys();
if (error) {
KAA_LOG_ERROR(logger, error, "Failed to initialize keys");
return error;
}
ext_get_sha1_public(&sha1, &sha1_size);
ext_copy_sha_hash((*kaa_context_p)->status->status_instance->endpoint_public_key_hash, sha1);
return kaa_status_set_updated((*kaa_context_p)->status->status_instance, true);
}
int kaa_demo_event_loop()
{
kaa_error_t error_code = kaa_start(kaa_context_);
if (error_code) {
KAA_LOG_FATAL(kaa_context_->logger, error_code,"Failed to start Kaa workflow");
return -1;
}
uint16_t select_timeout;
error_code = kaa_tcp_channel_get_max_timeout(&operations_channel, &select_timeout);
if (error_code) {
KAA_LOG_FATAL(kaa_context_->logger, error_code,"Failed to get Operations channel keepalive timeout");
return -1;
}
if (select_timeout > KAA_DEMO_LOG_GENERATION_FREQUENCY) {
select_timeout = KAA_DEMO_LOG_GENERATION_FREQUENCY;
}
fd_set read_fds, write_fds, except_fds;
int ops_fd = 0, bootstrap_fd = 0;
struct timeval select_tv = { 0, 0 };
int max_fd = 0;
while (log_record_counter < KAA_DEMO_LOGS_TO_SEND) {
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&except_fds);
max_fd = 0;
kaa_tcp_channel_get_descriptor(&operations_channel, &ops_fd);
if (max_fd < ops_fd)
max_fd = ops_fd;
kaa_tcp_channel_get_descriptor(&bootstrap_channel, &bootstrap_fd);
if (max_fd < bootstrap_fd)
max_fd = bootstrap_fd;
if (kaa_tcp_channel_is_ready(&operations_channel, FD_READ))
FD_SET(ops_fd, &read_fds);
if (kaa_tcp_channel_is_ready(&operations_channel, FD_WRITE))
FD_SET(ops_fd, &write_fds);
if (kaa_tcp_channel_is_ready(&bootstrap_channel, FD_READ))
FD_SET(bootstrap_fd, &read_fds);
if (kaa_tcp_channel_is_ready(&bootstrap_channel, FD_WRITE))
FD_SET(bootstrap_fd, &write_fds);
select_tv.tv_sec = select_timeout;
select_tv.tv_usec = 0;
int poll_result = select(max_fd + 1, &read_fds, &write_fds, NULL, &select_tv);
if (poll_result == 0) {
kaa_demo_add_log_record();
kaa_tcp_channel_check_keepalive(&operations_channel);
kaa_tcp_channel_check_keepalive(&bootstrap_channel);
} else if (poll_result > 0) {
if (bootstrap_fd >= 0) {
if (FD_ISSET(bootstrap_fd, &read_fds)) {
KAA_LOG_DEBUG(kaa_context_->logger, KAA_ERR_NONE,"Processing IN event for the Bootstrap client socket %d", bootstrap_fd);
error_code = kaa_tcp_channel_process_event(&bootstrap_channel, FD_READ);
if (error_code)
KAA_LOG_ERROR(kaa_context_->logger, KAA_ERR_NONE,"Failed to process IN event for the Bootstrap client socket %d", bootstrap_fd);
}
if (FD_ISSET(bootstrap_fd, &write_fds)) {
KAA_LOG_DEBUG(kaa_context_->logger, KAA_ERR_NONE,"Processing OUT event for the Bootstrap client socket %d", bootstrap_fd);
error_code = kaa_tcp_channel_process_event(&bootstrap_channel, FD_WRITE);
if (error_code)
KAA_LOG_ERROR(kaa_context_->logger, error_code,"Failed to process OUT event for the Bootstrap client socket %d", bootstrap_fd);
}
}
if (ops_fd >= 0) {
if (FD_ISSET(ops_fd, &read_fds)) {
KAA_LOG_DEBUG(kaa_context_->logger, KAA_ERR_NONE,"Processing IN event for the Operations client socket %d", ops_fd);
error_code = kaa_tcp_channel_process_event(&operations_channel, FD_READ);
if (error_code)
KAA_LOG_ERROR(kaa_context_->logger, error_code,"Failed to process IN event for the Operations client socket %d", ops_fd);
}
if (FD_ISSET(ops_fd, &write_fds)) {
KAA_LOG_DEBUG(kaa_context_->logger, KAA_ERR_NONE,"Processing OUT event for the Operations client socket %d", ops_fd);
error_code = kaa_tcp_channel_process_event(&operations_channel, FD_WRITE);
if (error_code)
KAA_LOG_ERROR(kaa_context_->logger, error_code,"Failed to process OUT event for the Operations client socket %d", ops_fd);
}
}
} else {
KAA_LOG_ERROR(kaa_context_->logger, KAA_ERR_BAD_STATE,"Failed to poll descriptors: %s", strerror(errno));
return -1;
}
}
return 0;
}
