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mod_graylog2: channel variables can now be automatically added as gelf additional fields in logs w/ session UUID

This commit is contained in:
Chris Rienzo 2014-08-21 11:06:13 -04:00
parent 5f6db1db3e
commit 0ba1b1efea
2 changed files with 72 additions and 18 deletions
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7
src/mod/loggers/mod_graylog2/conf/autoload_configs/graylog2.conf.xml
View File

@ -11,5 +11,12 @@
<param name="server-host" value="192.168.0.69"/>
<param name="server-port" value="12201"/>
<param name="loglevel" value="warning"/>
<!-- fields to add to every log associated w/ a session -->
<fields>
<!-- for example: channel variable "customer_account_number" will be the data source for the customer field in graylog2 -->
<field name="customer" variable="customer_account_number"/>
</fields>
</settings>
</configuration>

83
src/mod/loggers/mod_graylog2/mod_graylog2.c
View File

@ -51,6 +51,8 @@ static struct {
switch_thread_rwlock_t *shutdown_rwlock;
/** log delivery queue */
switch_queue_t *log_queue;
/** Fields to automatically add to session logs */
switch_event_t *session_fields;
} globals;
/**
@ -85,6 +87,7 @@ static char *to_gelf(const switch_log_node_t *node, switch_log_level_t log_level
char *parsed_full_message = NULL;
char *field_name = NULL;
switch_event_t *log_fields = NULL;
switch_core_session_t *session = NULL;
cJSON_AddItemToObject(gelf, "version", cJSON_CreateString("1.1"));
if ((hostname = switch_core_get_variable("hostname")) && !zstr(hostname)) {
@ -117,27 +120,47 @@ static char *to_gelf(const switch_log_node_t *node, switch_log_level_t log_level
full_message++;
}
/* parse list of fields, if any */
if (strncmp(full_message, "LOG_FIELDS", 10) == 0) {
if (switch_event_create_brackets(full_message+10, '[', ']', ',', &log_fields, &parsed_full_message, SWITCH_TRUE) == SWITCH_STATUS_SUCCESS) {
switch_event_header_t *hp;
for (hp = log_fields->headers; hp; hp = hp->next) {
if (!zstr(hp->name) && !zstr(hp->value)) {
if (strncmp(hp->name, "@#", 2) == 0) {
field_name = switch_mprintf("_%s", hp->name + 2);
cJSON_AddItemToObject(gelf, field_name, cJSON_CreateNumber(strtod(hp->value, NULL)));
} else {
field_name = switch_mprintf("_%s", hp->name);
cJSON_AddItemToObject(gelf, field_name, cJSON_CreateString(hp->value));
/* get fields from channel data, if configured */
if (!zstr(node->userdata) && (session = switch_core_session_locate(node->userdata))) {
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_event_header_t *hp;
/* session_fields name mapped to variable name */
for (hp = globals.session_fields->headers; hp; hp = hp->next) {
if (!zstr(hp->name) && !zstr(hp->value)) {
const char *val = switch_channel_get_variable(channel, hp->value);
if (!zstr(val)) {
if (!log_fields) {
switch_event_create_plain(&log_fields, SWITCH_EVENT_CHANNEL_DATA);
}
free(field_name);
switch_event_add_header_string(log_fields, SWITCH_STACK_BOTTOM, hp->name, val);
}
}
switch_event_destroy(&log_fields);
full_message = parsed_full_message;
}
switch_core_session_rwunlock(session);
}
/* parse list of fields from message text, if any */
if (strncmp(full_message, "LOG_FIELDS", 10) == 0) {
switch_event_create_brackets(full_message+10, '[', ']', ',', &log_fields, &parsed_full_message, SWITCH_TRUE);
full_message = parsed_full_message;
}
/* add additional fields */
if (log_fields) {
switch_event_header_t *hp;
for (hp = log_fields->headers; hp; hp = hp->next) {
if (!zstr(hp->name) && !zstr(hp->value)) {
if (strncmp(hp->name, "@#", 2) == 0) {
field_name = switch_mprintf("_%s", hp->name + 2);
cJSON_AddItemToObject(gelf, field_name, cJSON_CreateNumber(strtod(hp->value, NULL)));
} else {
field_name = switch_mprintf("_%s", hp->name);
cJSON_AddItemToObject(gelf, field_name, cJSON_CreateString(hp->value));
}
free(field_name);
}
}
switch_event_destroy(&log_fields);
}
cJSON_AddItemToObject(gelf, "full_message", cJSON_CreateString(full_message));
@ -293,6 +316,7 @@ static switch_status_t do_config(void)
if ((settings = switch_xml_child(cfg, "settings"))) {
switch_xml_t param;
switch_xml_t fields;
for (param = switch_xml_child(settings, "param"); param; param = param->next) {
char *name = (char *) switch_xml_attr_soft(param, "name");
char *value = (char *) switch_xml_attr_soft(param, "value");
@ -333,6 +357,25 @@ static switch_status_t do_config(void)
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Ignoring unknown param: \"%s\"\n", name);
}
}
/* map session fields to channel variables */
if ((fields = switch_xml_child(settings, "fields"))) {
switch_xml_t field;
for (field = switch_xml_child(fields, "field"); field; field = field->next) {
char *name = (char *) switch_xml_attr_soft(field, "name");
char *variable = (char *) switch_xml_attr_soft(field, "variable");
if (zstr(name)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Ignoring unnamed session field\n");
continue;
}
if (zstr(variable)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Ignoring empty channel variable for session field \"%s\"\n", name);
continue;
}
switch_event_add_header_string(globals.session_fields, SWITCH_STACK_BOTTOM,
switch_core_strdup(globals.pool, name), switch_core_strdup(globals.pool, variable));
}
}
}
switch_xml_free(xml);
return SWITCH_STATUS_SUCCESS;
@ -345,6 +388,8 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_graylog2_load)
memset(&globals, 0, sizeof(globals));
globals.pool = pool;
switch_event_create_plain(&globals.session_fields, SWITCH_EVENT_CHANNEL_DATA);
if (do_config() != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_TERM;
}
@ -362,7 +407,9 @@ SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_graylog2_shutdown)
{
switch_log_unbind_logger(mod_graylog2_logger);
stop_deliver_graylog2_thread();
if (globals.session_fields) {
switch_event_destroy(&globals.session_fields);
}
return SWITCH_STATUS_SUCCESS;
}