/**
* Callback function to use with INIH for parsing histogram configs
* @arg user Opaque value. Actually a statsite_config pointer
* @arg name The config name
* @value = The config value
* @return 1 on success
*/
static int histogram_callback(void* user, const char* section, const char* name, const char* value) {
// Make sure we don't change sections with an unfinished config
if (in_progress && strcasecmp(histogram_section, section)) {
syslog(LOG_WARNING, "Unfinished configuration for section: %s", histogram_section);
return 0;
}
// Ensure we have something in progress
if (!in_progress) {
in_progress = calloc(1, sizeof(histogram_config));
histogram_section = strdup(section);
}
// Cast the user handle
statsite_config *config = (statsite_config*)user;
// Switch on the config
#define NAME_MATCH(param) (strcasecmp(param, name) == 0)
int res = 1;
if (NAME_MATCH("prefix")) {
in_progress->parts |= 1;
in_progress->prefix = strdup(value);
} else if (NAME_MATCH("min")) {
in_progress->parts |= 1 << 1;
res = value_to_double(value, &in_progress->min_val);
} else if (NAME_MATCH("max")) {
in_progress->parts |= 1 << 2;
res = value_to_double(value, &in_progress->max_val);
} else if (NAME_MATCH("width")) {
in_progress->parts |= 1 << 3;
res = value_to_double(value, &in_progress->bin_width);
} else {
syslog(LOG_NOTICE, "Unrecognized histogram config parameter: %s", value);
}
// Check if this config is done, and push into the list of configs
if (in_progress->parts == 15) {
in_progress->next = config->hist_configs;
config->hist_configs = in_progress;
in_progress = NULL;
free(histogram_section);
histogram_section = NULL;
}
return res;
}
/**
* Callback function to use with INI-H.
* @arg user Opaque user value. We use the statsite_config pointer
* @arg section The INI seciton
* @arg name The config name
* @arg value The config value
* @return 1 on success.
*/
static int config_callback(void* user, const char* section, const char* name, const char* value) {
// Ignore any non-statsite sections
if (strcasecmp("statsite", section) != 0) {
return 0;
}
// Cast the user handle
statsite_config *config = (statsite_config*)user;
// Switch on the config
#define NAME_MATCH(param) (strcasecmp(param, name) == 0)
// Handle the int cases
if (NAME_MATCH("port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("tcp_port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("udp_port")) {
return value_to_int(value, &config->udp_port);
} else if (NAME_MATCH("flush_interval")) {
return value_to_int(value, &config->flush_interval);
} else if (NAME_MATCH("daemonize")) {
return value_to_bool(value, &config->daemonize);
// Handle the double cases
} else if (NAME_MATCH("timer_eps")) {
return value_to_double(value, &config->timer_eps);
// Copy the string values
} else if (NAME_MATCH("log_level")) {
config->log_level = strdup(value);
} else if (NAME_MATCH("stream_cmd")) {
config->stream_cmd = strdup(value);
} else if (NAME_MATCH("pid_file")) {
config->pid_file = strdup(value);
// Unknown parameter?
} else {
// Log it, but ignore
syslog(LOG_NOTICE, "Unrecognized config parameter: %s", value);
}
// Success
return 1;
}
/**
* Callback function to use with INI-H.
* @arg user Opaque user value. We use the statsite_config pointer
* @arg section The INI seciton
* @arg name The config name
* @arg value The config value
* @return 1 on success.
*/
static int config_callback(void* user, const char* section, const char* name, const char* value) {
// Specially handle histogram sections
if (strncasecmp("histogram", section, 9) == 0) {
return histogram_callback(user, section, name, value);
}
// Ignore any non-statsite sections
if (strcasecmp("statsite", section) != 0) {
return 0;
}
// Cast the user handle
statsite_config *config = (statsite_config*)user;
// Switch on the config
#define NAME_MATCH(param) (strcasecmp(param, name) == 0)
// Handle the int cases
if (NAME_MATCH("port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("tcp_port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("udp_port")) {
return value_to_int(value, &config->udp_port);
} else if (NAME_MATCH("flush_interval")) {
return value_to_int(value, &config->flush_interval);
} else if (NAME_MATCH("parse_stdin")) {
return value_to_bool(value, &config->parse_stdin);
} else if (NAME_MATCH("daemonize")) {
return value_to_bool(value, &config->daemonize);
} else if (NAME_MATCH("binary_stream")) {
return value_to_bool(value, &config->binary_stream);
} else if (NAME_MATCH("use_type_prefix")) {
return value_to_bool(value, &config->use_type_prefix);
} else if (NAME_MATCH("extended_counters")) {
return value_to_bool(value, &config->extended_counters);
// Handle the double cases
} else if (NAME_MATCH("timer_eps")) {
return value_to_double(value, &config->timer_eps);
} else if (NAME_MATCH("set_eps")) {
return value_to_double(value, &config->set_eps);
// Copy the string values
} else if (NAME_MATCH("log_level")) {
config->log_level = strdup(value);
} else if (NAME_MATCH("stream_cmd")) {
config->stream_cmd = strdup(value);
} else if (NAME_MATCH("pid_file")) {
config->pid_file = strdup(value);
} else if (NAME_MATCH("input_counter")) {
config->input_counter = strdup(value);
} else if (NAME_MATCH("bind_address")) {
config->bind_address = strdup(value);
} else if (NAME_MATCH("global_prefix")) {
config->global_prefix = strdup(value);
} else if (NAME_MATCH("counts_prefix")) {
config->prefixes[COUNTER] = strdup(value);
} else if (NAME_MATCH("gauges_prefix")) {
config->prefixes[GAUGE] = strdup(value);
} else if (NAME_MATCH("timers_prefix")) {
config->prefixes[TIMER] = strdup(value);
} else if (NAME_MATCH("sets_prefix")) {
config->prefixes[SET] = strdup(value);
} else if (NAME_MATCH("kv_prefix")) {
config->prefixes[KEY_VAL] = strdup(value);
// Unknown parameter?
} else {
// Log it, but ignore
syslog(LOG_NOTICE, "Unrecognized config parameter: %s", name);
}
// Success
return 1;
}
/**
* Callback function to use with INIH for parsing sink configurations.
* The sink type is currently encoded into the section name to
* simplify instantiating the correct configuration type.
*/
static int sink_callback(void* user, const char* section, const char* name, const char* value) {
statsite_config *all_config = (statsite_config*)user;
/* The sink section does not match - lets commit since we're on to a new one now */
if (sink_in_progress && strcasecmp(sink_section, section)) {
sink_commit(all_config);
}
/* Nothing in progress? Create it! */
if (!sink_in_progress) {
if (!sink_section)
sink_section = strdup(section);
char* section_to_tokenize = strdup(section);
char* tok = NULL;
char* header = strtok_r(section_to_tokenize, "_", &tok);
char* type = strtok_r(NULL, "_", &tok);
char* name = strtok_r(NULL, "_", &tok);
if (header == NULL || type == NULL || name == NULL) {
free(section_to_tokenize);
syslog(LOG_WARNING, "Sink section %s is not of the form \"sink_[type]_[name]\"", section);
return 0;
}
/* Match various sink types to find their type */
if (strcasecmp(type, "stream") == 0) {
sink_config_stream* config = calloc(1, sizeof(sink_config_stream));
sink_in_progress = (sink_config*)config;
config->super.type = SINK_TYPE_STREAM;
config->super.name = strdup(name);
config->stream_cmd = DEFAULT_SINK.stream_cmd;
} else if (strcasecmp(type, "http") == 0) {
sink_config_http* config = malloc(sizeof(sink_config_http));
memcpy(config, &DEFAULT_HTTP_SINK, sizeof(sink_config_http));
sink_in_progress = (sink_config*)config;
config->super.name = strdup(name);
} else {
free(section_to_tokenize);
/* Unknown sink type - abort! */
syslog(LOG_WARNING, "Unknown sink type: %s for sink: %s", type, name);
return 0;
}
free(section_to_tokenize);
}
switch(sink_in_progress->type) {
case SINK_TYPE_STREAM:
{
sink_config_stream* config = (sink_config_stream*)sink_in_progress;
if (NAME_MATCH("binary")) {
return value_to_bool(value, &config->binary_stream);
} else if (NAME_MATCH("command")) {
config->stream_cmd = strdup(value);
} else {
syslog(LOG_NOTICE, "Unrecognized stream sink parameter: %s", name);
return 0;
}
break;
}
case SINK_TYPE_HTTP:
{
sink_config_http* config = (sink_config_http*)sink_in_progress;
if (NAME_MATCH("url")) {
config->post_url = strdup(value);
} else if (NAME_MATCH("metrics_name")) {
config->metrics_name = strdup(value);
} else if (NAME_MATCH("timestamp_name")) {
config->timestamp_name = strdup(value);
} else if (NAME_MATCH("timestamp_format")) {
config->timestamp_format = strdup(value);
} else if (NAME_MATCH("ciphers")) {
config->ciphers = strdup(value);
} else if (NAME_MATCH("oauth_key")) {
config->oauth_key = strdup(value);
} else if (NAME_MATCH("oauth_secret")) {
config->oauth_secret = strdup(value);
} else if (NAME_MATCH("oauth_token_url")) {
config->oauth_token_url = strdup(value);
} else if (NAME_MATCH("max_buffer_size")) {
value_to_int(value, &config->max_buffer_size);
} else if (NAME_MATCH("send_backoff_ms")) {
value_to_int(value, &config->send_backoff_ms);
} else {
/* Attempt to locate keys
* of the form param_PNAME */
char* param_tok = strdup(name);
char* tok = NULL;
char* header = strtok_r(param_tok, "_", &tok);
char* param = strtok_r(NULL, "_", &tok);
if (header == NULL || param == NULL || strcasecmp("param", header) != 0) {
syslog(LOG_NOTICE, "Unrecognized http sink parameters: %s: %s", name, header);
free(param_tok);
return 0;
}
kv_config* last_kv = config->params;
config->params = calloc(1, sizeof(kv_config));
config->params->k = strdup(param);
config->params->v = strdup(value);
config->params->next = last_kv;
free(param_tok);
}
break;
}
default:
syslog(LOG_WARNING, "Grevious state problem");
return 0;
}
return 1;
}
/**
* Callback function to use with INI-H.
* @arg user Opaque user value. We use the hlld_config pointer
* @arg section The INI seciton
* @arg name The config name
* @arg value The config value
* @return 1 on success.
*/
static int config_callback(void* user, const char* section, const char* name, const char* value) {
// Ignore any non-hlld sections
if (strcasecmp("hlld", section) != 0) {
return 0;
}
// Cast the user handle
hlld_config *config = (hlld_config*)user;
// Switch on the config
#define NAME_MATCH(param) (strcasecmp(param, name) == 0)
// Handle the int cases
if (NAME_MATCH("port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("tcp_port")) {
return value_to_int(value, &config->tcp_port);
} else if (NAME_MATCH("udp_port")) {
return value_to_int(value, &config->udp_port);
} else if (NAME_MATCH("flush_interval")) {
return value_to_int(value, &config->flush_interval);
} else if (NAME_MATCH("cold_interval")) {
return value_to_int(value, &config->cold_interval);
} else if (NAME_MATCH("in_memory")) {
return value_to_int(value, &config->in_memory);
} else if (NAME_MATCH("use_mmap")) {
return value_to_int(value, &config->use_mmap);
} else if (NAME_MATCH("workers")) {
return value_to_int(value, &config->worker_threads);
} else if (NAME_MATCH("default_precision")) {
int res = value_to_int(value, &config->default_precision);
// Compute expected error given precision
config->default_eps = hll_error_for_precision(config->default_precision);
return res;
// Handle the double cases
} else if (NAME_MATCH("default_eps")) {
int res = value_to_double(value, &config->default_eps);
// Compute required precision given error
config->default_precision = hll_precision_for_error(config->default_eps);
// Compute error given precision. This is kinda strange but it is done
// since its not possible to hit all epsilons perfectly, but we try to get
// the eps provided to be the upper bound. This value is the actual eps.
config->default_eps = hll_error_for_precision(config->default_precision);
return res;
// Copy the string values
} else if (NAME_MATCH("data_dir")) {
config->data_dir = strdup(value);
} else if (NAME_MATCH("log_level")) {
config->log_level = strdup(value);
// Unknown parameter?
} else {
// Log it, but ignore
syslog(LOG_NOTICE, "Unrecognized config parameter: %s", value);
}
// Success
return 1;
}