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Introduced variables in ngx_http_stub_status module.

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Three new variables were added: $connections_active, $connections_reading
and $connections_writing.
This commit is contained in:
Andrey Belov 2013-02-21 23:31:57 +00:00
parent 208fc03e7c
commit 284a7dbb30
1 changed files with 80 additions and 1 deletions
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81
src/http/modules/ngx_http_stub_status_module.c
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@ -10,6 +10,10 @@
#include <ngx_http.h> #include <ngx_http.h>
static ngx_int_t ngx_http_stub_status_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_stub_status_add_variables(ngx_conf_t *cf);
static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf); void *conf);
@ -28,7 +32,7 @@ static ngx_command_t ngx_http_status_commands[] = {
static ngx_http_module_t ngx_http_stub_status_module_ctx = { static ngx_http_module_t ngx_http_stub_status_module_ctx = {
NULL, /* preconfiguration */ ngx_http_stub_status_add_variables, /* preconfiguration */
NULL, /* postconfiguration */ NULL, /* postconfiguration */
NULL, /* create main configuration */ NULL, /* create main configuration */
@ -58,6 +62,21 @@ ngx_module_t ngx_http_stub_status_module = {
}; };
static ngx_http_variable_t ngx_http_stub_status_vars[] = {
{ ngx_string("connections_active"), NULL, ngx_http_stub_status_variable,
0, NGX_HTTP_VAR_NOCACHEABLE, 0 },
{ ngx_string("connections_reading"), NULL, ngx_http_stub_status_variable,
1, NGX_HTTP_VAR_NOCACHEABLE, 0 },
{ ngx_string("connections_writing"), NULL, ngx_http_stub_status_variable,
2, NGX_HTTP_VAR_NOCACHEABLE, 0 },
{ ngx_null_string, NULL, NULL, 0, 0, 0 }
};
static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r) static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r)
{ {
size_t size; size_t size;
@ -133,6 +152,66 @@ static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r)
} }
static ngx_int_t
ngx_http_stub_status_variable(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data)
{
u_char *p;
ngx_atomic_int_t value;
p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN);
if (p == NULL) {
return NGX_ERROR;
}
switch (data) {
case 0:
value = *ngx_stat_active;
break;
case 1:
value = *ngx_stat_reading;
break;
case 2:
value = *ngx_stat_writing;
break;
/* suppress warning */
default:
value = 0;
break;
}
v->len = ngx_sprintf(p, "%uA", value) - p;
v->valid = 1;
v->no_cacheable = 0;
v->not_found = 0;
v->data = p;
return NGX_OK;
}
static ngx_int_t
ngx_http_stub_status_add_variables(ngx_conf_t *cf)
{
ngx_http_variable_t *var, *v;
for (v = ngx_http_stub_status_vars; v->name.len; v++) {
var = ngx_http_add_variable(cf, &v->name, v->flags);
if (var == NULL) {
return NGX_ERROR;
}
var->get_handler = v->get_handler;
var->data = v->data;
}
return NGX_OK;
}
static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{ {
ngx_http_core_loc_conf_t *clcf; ngx_http_core_loc_conf_t *clcf;