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comparison src/http/modules/ngx_http_stub_status_module.c @ 36:a39d1b793287 NGINX_0_1_18

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nginx 0.1.18 *) Workaround: the default values of the devpoll_events and the devpoll_changes directives changed from 512 to 32 to be compatible with Solaris 10. *) Bugfix: the proxy_set_x_var and fastcgi_set_var directives were not inherited. *) Bugfix: in the redirect rewrite directive the arguments were concatenated with URI by the "&" rather than the "?". *) Bugfix: the lines without trailing ";" in the file being included by the ngx_http_geo_module were silently ignored. *) Feature: the ngx_http_stub_status_module. *) Bugfix: the unknown log format in the access_log directive caused the segmentation fault. *) Feature: the new "document_root" parameter of the fastcgi_params directive. *) Feature: the fastcgi_redirect_errors directive. *) Feature: the new "break" modifier of the "rewrite" directive allows to stop the rewrite/location cycle and sets the current configuration to the request.
author Igor Sysoev <http://sysoev.ru>
date Wed, 09 Feb 2005 00:00:00 +0300
parents
children 41ccba1aba45
comparison
equal deleted inserted replaced
35:ef53675fe4a6 36:a39d1b793287
1
2 #include <ngx_config.h>
3 #include <ngx_core.h>
4 #include <ngx_http.h>
5
6
7 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd,
8 void *conf);
9
10 static ngx_command_t ngx_http_status_commands[] = {
11
12 { ngx_string("stub_status"),
13 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
14 ngx_http_set_status,
15 0,
16 0,
17 NULL },
18
19 ngx_null_command
20 };
21
22
23
24 ngx_http_module_t ngx_http_stub_status_module_ctx = {
25 NULL, /* pre conf */
26
27 NULL, /* create main configuration */
28 NULL, /* init main configuration */
29
30 NULL, /* create server configuration */
31 NULL, /* merge server configuration */
32
33 NULL, /* create location configuration */
34 NULL /* merge location configuration */
35 };
36
37
38 ngx_module_t ngx_http_stub_status_module = {
39 NGX_MODULE,
40 &ngx_http_stub_status_module_ctx, /* module context */
41 ngx_http_status_commands, /* module directives */
42 NGX_HTTP_MODULE, /* module type */
43 NULL, /* init module */
44 NULL /* init process */
45 };
46
47
48 static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r)
49 {
50 size_t size;
51 ngx_int_t rc;
52 uint32_t ap, hn, ac, rq, rd, wr;
53 ngx_buf_t *b;
54 ngx_chain_t out;
55
56 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) {
57 return NGX_HTTP_NOT_ALLOWED;
58 }
59
60 rc = ngx_http_discard_body(r);
61
62 if (rc != NGX_OK && rc != NGX_AGAIN) {
63 return rc;
64 }
65
66 r->headers_out.content_type = ngx_list_push(&r->headers_out.headers);
67 if (r->headers_out.content_type == NULL) {
68 return NGX_HTTP_INTERNAL_SERVER_ERROR;
69 }
70
71 r->headers_out.content_type->key.len = 0;
72 r->headers_out.content_type->key.data = NULL;
73 r->headers_out.content_type->value.len = sizeof("text/plain") - 1;
74 r->headers_out.content_type->value.data = (u_char *) "text/plain";
75
76 if (r->method == NGX_HTTP_HEAD) {
77 r->headers_out.status = NGX_HTTP_OK;
78
79 rc = ngx_http_send_header(r);
80
81 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
82 return rc;
83 }
84 }
85
86 size = sizeof("Active connections: \n") + NGX_INT32_LEN
87 + sizeof("server accepts handled requests\n") - 1
88 + 6 + 3 * NGX_INT32_LEN
89 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_INT32_LEN;
90
91 if (!(b = ngx_create_temp_buf(r->pool, size))) {
92 return NGX_HTTP_INTERNAL_SERVER_ERROR;
93 }
94
95 out.buf = b;
96 out.next = NULL;
97
98 ap = *ngx_stat_accepted;
99 hn = *ngx_connection_counter;
100 ac = *ngx_stat_active;
101 rq = *ngx_stat_requests;
102 rd = *ngx_stat_reading;
103 wr = *ngx_stat_writing;
104
105 b->last = ngx_sprintf(b->last, "Active connections: %d \n", ac);
106
107 b->last = ngx_cpymem(b->last, "server accepts handled requests\n",
108 sizeof("server accepts handled requests\n") - 1);
109
110 b->last = ngx_sprintf(b->last, " %d %d %d \n", ap, hn, rq);
111
112 b->last = ngx_sprintf(b->last, "Reading: %d Writing: %d Waiting: %d \n",
113 rd, wr, ac - (rd + wr));
114
115 r->headers_out.status = NGX_HTTP_OK;
116 r->headers_out.content_length_n = b->last - b->pos;
117
118 b->last_buf = 1;
119
120 rc = ngx_http_send_header(r);
121
122 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
123 return rc;
124 }
125
126 return ngx_http_output_filter(r, &out);;
127 }
128
129
130 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
131 {
132 ngx_http_core_loc_conf_t *clcf;
133
134 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
135 clcf->handler = ngx_http_status_handler;
136
137 return NGX_CONF_OK;
138 }