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#include <stdio.h>
#include <stdint.h>
#include <json-glib/json-glib.h>
#include <ufo/ufo.h>
#include "ufo-roof-error.h"
#include "ufo-roof-config.h"
#define roof_config_node_get_with_default(var, parent, type, name, default) do { \
JsonNode *node = json_object_get_member(parent, name); \
if (node) var = json_node_get_##type(node); \
else var = default; \
} while(0)
#define roof_config_node_get_string_with_default(var, parent, name, default) do { \
const gchar *str; \
JsonNode *node = json_object_get_member(parent, name); \
if (node) str = json_node_get_string(node); \
else str = default; \
if (var != str) { \
if (var) g_free(var); \
var = g_strdup(str); \
} \
} while(0)
#define roof_config_node_get(var, parent, type, name) \
roof_config_node_get_with_default(var, parent, type, name, var)
#define roof_config_node_get_string(var, parent, name) \
roof_config_node_get_string_with_default(var, parent, name, var)
typedef struct {
UfoRoofConfig cfg;
JsonParser *parser;
} UfoRoofConfigPrivate;
void ufo_roof_config_free(UfoRoofConfig *cfg) {
if (cfg) {
UfoRoofConfigPrivate *priv = (UfoRoofConfigPrivate*)cfg;
if (cfg->path)
g_free(cfg->path);
if (priv->parser)
g_object_unref (priv->parser);
free(cfg);
}
}
UfoRoofConfig *ufo_roof_config_new(const char *config, GError **error) {
UfoRoofConfigPrivate *priv;
UfoRoofConfig *cfg;
// JsonNode *node;
JsonObject *root = NULL;
JsonObject *hardware = NULL;
JsonObject *network = NULL;
JsonObject *performance = NULL;
JsonObject *simulation = NULL;
GError *gerr = NULL;
priv = (UfoRoofConfigPrivate*)malloc(sizeof(UfoRoofConfigPrivate));
if (!priv) roof_new_error(error, "Can't allocate UfoRoofConfig");
memset(priv, 0, sizeof(UfoRoofConfigPrivate));
// Set defaults
cfg = &priv->cfg;
cfg->port = 4000;
cfg->n_streams = 1;
cfg->protocol = "udp";
cfg->network_timeout = 10000000;
cfg->header_size = 0;
cfg->payload_size = 0;
cfg->max_packet_size = 0;
cfg->max_packets = 100;
cfg->dataset_size = 0;
cfg->buffer_size = 2;
cfg->drop_buffers = 0;
cfg->path = NULL;
// Read configuration
priv->parser = json_parser_new_immutable ();
json_parser_load_from_file (priv->parser, config, &gerr);
if (gerr != NULL) {
g_propagate_prefixed_error(error, gerr, "Error parsing JSON file (%s) with ROOF configuration: ", config);
ufo_roof_config_free(cfg);
return NULL;
}
root = json_node_get_object (json_parser_get_root (priv->parser));
if (root) {
roof_config_node_get(hardware, root, object, "hardware");
roof_config_node_get(network, root, object, "network");
roof_config_node_get(simulation, root, object, "simulation");
roof_config_node_get(performance, root, object, "performance");
}
if (hardware) {
// FIXME: Compute dataset size based on roof hardware
}
if (network) {
// int max_packet_size = 0;
roof_config_node_get(cfg->port, network, int, "port");
roof_config_node_get(cfg->n_streams, network, int, "streams");
roof_config_node_get(cfg->max_packet_size, network, int, "max_packet_size");
// FIXME: compute payload_size based on sample_size
roof_config_node_get(cfg->payload_size, network, int, "payload_size");
roof_config_node_get(cfg->header_size, network, int, "header_size");
roof_config_node_get(cfg->dataset_size, network, int, "dataset_size");
}
if (performance) {
roof_config_node_get(cfg->max_packets, performance, int, "packets_at_once");
roof_config_node_get(cfg->buffer_size, performance, int, "buffer_size");
roof_config_node_get(cfg->drop_buffers, performance, int, "drop_buffers");
}
if (simulation) {
roof_config_node_get_string(cfg->path, simulation, "path");
roof_config_node_get(cfg->first_file_number, simulation, int, "first_file_number");
}
// Check configuration consistency
if (!cfg->payload_size) {
ufo_roof_config_free(cfg);
roof_new_error(error, "Packet size is not set");
}
if ((!cfg->header_size)&&(!cfg->path)) {
if (!strncmp(cfg->protocol, "udp", 3)) {
// Error if 0 implicitely set, use default value otherwise
if ((network)&&(json_object_get_member(network, "header_size"))) {
ufo_roof_config_free(cfg);
roof_new_error(error, "The header with packet ids is required for un-ordered protocols");
} else {
cfg->header_size = sizeof(uint32_t);
}
}
}
guint fragments_per_dataset = cfg->dataset_size / cfg->payload_size;
guint fragments_per_stream = fragments_per_dataset / cfg->n_streams;
if ((cfg->dataset_size % cfg->payload_size)||(fragments_per_dataset%cfg->n_streams)) {
ufo_roof_config_free(cfg);
roof_new_error(error, "Inconsistent ROOF configuration: dataset_size=%u, packet_size=%u, data_streams=%u", cfg->dataset_size, cfg->payload_size, cfg->n_streams);
}
if (cfg->buffer_size * fragments_per_stream < cfg->max_packets) {
cfg->max_packets = cfg->buffer_size * fragments_per_stream / 2;
}
// Finalize configuration
if (!cfg->max_packet_size)
cfg->max_packet_size = cfg->header_size + cfg->payload_size;
if (!cfg->dataset_size)
cfg->dataset_size = cfg->payload_size;
if (cfg->buffer_size < 4) {
cfg->drop_buffers = 0;
} else if (cfg->drop_buffers >= cfg->buffer_size) {
cfg->drop_buffers = cfg->buffer_size / 2;
}
return cfg;
}
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