Mercurial > hg > nginx

annotate src/http/modules/ngx_http_stub_status_module.c @ 6306:b1858fc47e3b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Style: unified request method checks.
author Ruslan Ermilov <ru@nginx.com>
date Fri, 06 Nov 2015 15:22:43 +0300
parents f5b612019042
children 2a288909abc6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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12
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13 static ngx_int_t ngx_http_stub_status_handler(ngx_http_request_t *r);
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14 static ngx_int_t ngx_http_stub_status_variable(ngx_http_request_t *r,
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15 ngx_http_variable_value_t *v, uintptr_t data);
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16 static ngx_int_t ngx_http_stub_status_add_variables(ngx_conf_t *cf);
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17 static char *ngx_http_set_stub_status(ngx_conf_t *cf, ngx_command_t *cmd,
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18 void *conf);
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19
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21 static ngx_command_t ngx_http_status_commands[] = {
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22
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23 { ngx_string("stub_status"),
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24 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS|NGX_CONF_TAKE1,
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25 ngx_http_set_stub_status,
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26 0,
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27 0,
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28 NULL },
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29
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30 ngx_null_command
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31 };
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34 static ngx_http_module_t ngx_http_stub_status_module_ctx = {
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35 ngx_http_stub_status_add_variables, /* preconfiguration */
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36 NULL, /* postconfiguration */
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37
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38 NULL, /* create main configuration */
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39 NULL, /* init main configuration */
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41 NULL, /* create server configuration */
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42 NULL, /* merge server configuration */
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43
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44 NULL, /* create location configuration */
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45 NULL /* merge location configuration */
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46 };
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48
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49 ngx_module_t ngx_http_stub_status_module = {
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50 NGX_MODULE_V1,
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51 &ngx_http_stub_status_module_ctx, /* module context */
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52 ngx_http_status_commands, /* module directives */
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53 NGX_HTTP_MODULE, /* module type */
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54 NULL, /* init master */
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55 NULL, /* init module */
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56 NULL, /* init process */
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57 NULL, /* init thread */
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58 NULL, /* exit thread */
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59 NULL, /* exit process */
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60 NULL, /* exit master */
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61 NGX_MODULE_V1_PADDING
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62 };
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64
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65 static ngx_http_variable_t ngx_http_stub_status_vars[] = {
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66
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67 { ngx_string("connections_active"), NULL, ngx_http_stub_status_variable,
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68 0, NGX_HTTP_VAR_NOCACHEABLE, 0 },
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69
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70 { ngx_string("connections_reading"), NULL, ngx_http_stub_status_variable,
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71 1, NGX_HTTP_VAR_NOCACHEABLE, 0 },
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72
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73 { ngx_string("connections_writing"), NULL, ngx_http_stub_status_variable,
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74 2, NGX_HTTP_VAR_NOCACHEABLE, 0 },
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75
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76 { ngx_string("connections_waiting"), NULL, ngx_http_stub_status_variable,
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77 3, NGX_HTTP_VAR_NOCACHEABLE, 0 },
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78
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79 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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80 };
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82
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83 static ngx_int_t
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84 ngx_http_stub_status_handler(ngx_http_request_t *r)
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85 {
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86 size_t size;
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87 ngx_int_t rc;
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88 ngx_buf_t *b;
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89 ngx_chain_t out;
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90 ngx_atomic_int_t ap, hn, ac, rq, rd, wr, wa;
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91
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92 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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93 return NGX_HTTP_NOT_ALLOWED;
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94 }
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95
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96 rc = ngx_http_discard_request_body(r);
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97
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98 if (rc != NGX_OK) {
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99 return rc;
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100 }
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101
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102 r->headers_out.content_type_len = sizeof("text/plain") - 1;
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103 ngx_str_set(&r->headers_out.content_type, "text/plain");
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104 r->headers_out.content_type_lowcase = NULL;
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105
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106 if (r->method == NGX_HTTP_HEAD) {
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107 r->headers_out.status = NGX_HTTP_OK;
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108
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109 rc = ngx_http_send_header(r);
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110
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111 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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112 return rc;
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113 }
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114 }
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115
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116 size = sizeof("Active connections: \n") + NGX_ATOMIC_T_LEN
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117 + sizeof("server accepts handled requests\n") - 1
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118 + 6 + 3 * NGX_ATOMIC_T_LEN
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119 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_ATOMIC_T_LEN;
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120
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121 b = ngx_create_temp_buf(r->pool, size);
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122 if (b == NULL) {
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123 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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124 }
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125
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126 out.buf = b;
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127 out.next = NULL;
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128
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129 ap = *ngx_stat_accepted;
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130 hn = *ngx_stat_handled;
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131 ac = *ngx_stat_active;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
132 rq = *ngx_stat_requests;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
133 rd = *ngx_stat_reading;
31ff3e943e16 nginx-0.1.18-RELEASE import
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parents:
diff changeset
134 wr = *ngx_stat_writing;
5115
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
135 wa = *ngx_stat_waiting;
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
137 b->last = ngx_sprintf(b->last, "Active connections: %uA \n", ac);
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
138
31ff3e943e16 nginx-0.1.18-RELEASE import
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parents:
diff changeset
139 b->last = ngx_cpymem(b->last, "server accepts handled requests\n",
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
140 sizeof("server accepts handled requests\n") - 1);
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
141
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
142 b->last = ngx_sprintf(b->last, " %uA %uA %uA \n", ap, hn, rq);
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
143
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
144 b->last = ngx_sprintf(b->last, "Reading: %uA Writing: %uA Waiting: %uA \n",
5115
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
145 rd, wr, wa);
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
146
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 r->headers_out.status = NGX_HTTP_OK;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 r->headers_out.content_length_n = b->last - b->pos;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149
4611
2b6cb7528409 Allows particular modules to handle subrequests properly.
Andrey Belov <defan@nginx.com>
parents: 4412
diff changeset
150 b->last_buf = (r == r->main) ? 1 : 0;
5243
ee739104d164 Status: the "last_in_chain" flag must be set.
Valentin Bartenev <vbart@nginx.com>
parents: 5115
diff changeset
151 b->last_in_chain = 1;
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
152
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
153 rc = ngx_http_send_header(r);
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156 return rc;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 }
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
158
1563
022ec9420f80 style fix: remove double semicolons
Igor Sysoev <igor@sysoev.ru>
parents: 1374
diff changeset
159 return ngx_http_output_filter(r, &out);
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 }
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
162
5079
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
163 static ngx_int_t
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
164 ngx_http_stub_status_variable(ngx_http_request_t *r,
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
165 ngx_http_variable_value_t *v, uintptr_t data)
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
166 {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
167 u_char *p;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
168 ngx_atomic_int_t value;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
169
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
170 p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN);
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
171 if (p == NULL) {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
172 return NGX_ERROR;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
173 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
174
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
175 switch (data) {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
176 case 0:
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
177 value = *ngx_stat_active;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
178 break;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
179
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
180 case 1:
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
181 value = *ngx_stat_reading;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
182 break;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
183
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
184 case 2:
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
185 value = *ngx_stat_writing;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
186 break;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
187
5115
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
188 case 3:
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
189 value = *ngx_stat_waiting;
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
190 break;
a29c574d61fa Status: introduced the "ngx_stat_waiting" counter.
Valentin Bartenev <vbart@nginx.com>
parents: 5079
diff changeset
191
5079
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
192 /* suppress warning */
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
193 default:
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
194 value = 0;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
195 break;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
196 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
197
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
198 v->len = ngx_sprintf(p, "%uA", value) - p;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
199 v->valid = 1;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
200 v->no_cacheable = 0;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
201 v->not_found = 0;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
202 v->data = p;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
203
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
204 return NGX_OK;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
205 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
206
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
207
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
208 static ngx_int_t
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
209 ngx_http_stub_status_add_variables(ngx_conf_t *cf)
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
210 {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
211 ngx_http_variable_t *var, *v;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
212
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
213 for (v = ngx_http_stub_status_vars; v->name.len; v++) {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
214 var = ngx_http_add_variable(cf, &v->name, v->flags);
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
215 if (var == NULL) {
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
216 return NGX_ERROR;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
217 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
218
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
219 var->get_handler = v->get_handler;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
220 var->data = v->data;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
221 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
222
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
223 return NGX_OK;
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
224 }
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
225
1c472e3b8c10 Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents: 4611
diff changeset
226
5783
dc7c139fca21 Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents: 5497
diff changeset
227 static char *
dc7c139fca21 Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents: 5497
diff changeset
228 ngx_http_set_stub_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
229 {
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
230 ngx_http_core_loc_conf_t *clcf;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
231
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
232 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
5783
dc7c139fca21 Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents: 5497
diff changeset
233 clcf->handler = ngx_http_stub_status_handler;
487
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
234
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
235 return NGX_CONF_OK;
31ff3e943e16 nginx-0.1.18-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
236 }