Mercurial > hg > nginx
annotate src/http/modules/ngx_http_stub_status_module.c @ 5079:1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Three new variables were added: $connections_active, $connections_reading
and $connections_writing.
| author | Andrey Belov <defan@nginx.com> |
|---|---|
| date | Thu, 21 Feb 2013 23:31:57 +0000 |
| parents | 2b6cb7528409 |
| children | a29c574d61fa |
| rev | line source |
|---|---|
| 577 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 577 | 5 */ |
| 6 | |
| 487 | 7 |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
|
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13 static ngx_int_t ngx_http_stub_status_variable(ngx_http_request_t *r, |
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14 ngx_http_variable_value_t *v, uintptr_t data); |
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15 static ngx_int_t ngx_http_stub_status_add_variables(ngx_conf_t *cf); |
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16 |
| 487 | 17 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, |
| 18 void *conf); | |
| 577 | 19 |
| 487 | 20 static ngx_command_t ngx_http_status_commands[] = { |
| 21 | |
| 22 { ngx_string("stub_status"), | |
| 23 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 24 ngx_http_set_status, | |
| 25 0, | |
| 26 0, | |
| 27 NULL }, | |
| 28 | |
| 29 ngx_null_command | |
| 577 | 30 }; |
| 487 | 31 |
| 32 | |
| 577 | 33 |
| 667 | 34 static ngx_http_module_t ngx_http_stub_status_module_ctx = { |
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35 ngx_http_stub_status_add_variables, /* preconfiguration */ |
| 509 | 36 NULL, /* postconfiguration */ |
| 487 | 37 |
| 38 NULL, /* create main configuration */ | |
| 39 NULL, /* init main configuration */ | |
| 577 | 40 |
| 487 | 41 NULL, /* create server configuration */ |
| 42 NULL, /* merge server configuration */ | |
| 577 | 43 |
| 487 | 44 NULL, /* create location configuration */ |
| 45 NULL /* merge location configuration */ | |
| 46 }; | |
| 47 | |
| 48 | |
| 49 ngx_module_t ngx_http_stub_status_module = { | |
| 509 | 50 NGX_MODULE_V1, |
| 487 | 51 &ngx_http_stub_status_module_ctx, /* module context */ |
| 52 ngx_http_status_commands, /* module directives */ | |
| 53 NGX_HTTP_MODULE, /* module type */ | |
| 541 | 54 NULL, /* init master */ |
| 487 | 55 NULL, /* init module */ |
| 541 | 56 NULL, /* init process */ |
| 57 NULL, /* init thread */ | |
| 58 NULL, /* exit thread */ | |
| 59 NULL, /* exit process */ | |
| 60 NULL, /* exit master */ | |
| 61 NGX_MODULE_V1_PADDING | |
| 487 | 62 }; |
| 63 | |
| 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_null_string, NULL, NULL, 0, 0, 0 } |
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77 }; |
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78 |
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79 |
| 487 | 80 static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r) |
| 81 { | |
| 495 | 82 size_t size; |
| 83 ngx_int_t rc; | |
| 84 ngx_buf_t *b; | |
| 85 ngx_chain_t out; | |
| 86 ngx_atomic_int_t ap, hn, ac, rq, rd, wr; | |
| 577 | 87 |
| 487 | 88 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) { |
| 89 return NGX_HTTP_NOT_ALLOWED; | |
| 90 } | |
| 91 | |
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92 rc = ngx_http_discard_request_body(r); |
| 487 | 93 |
| 1374 | 94 if (rc != NGX_OK) { |
| 487 | 95 return rc; |
| 96 } | |
| 97 | |
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98 ngx_str_set(&r->headers_out.content_type, "text/plain"); |
| 487 | 99 |
| 100 if (r->method == NGX_HTTP_HEAD) { | |
| 101 r->headers_out.status = NGX_HTTP_OK; | |
| 102 | |
| 103 rc = ngx_http_send_header(r); | |
| 104 | |
| 105 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 106 return rc; | |
| 107 } | |
| 108 } | |
| 109 | |
| 495 | 110 size = sizeof("Active connections: \n") + NGX_ATOMIC_T_LEN |
| 487 | 111 + sizeof("server accepts handled requests\n") - 1 |
| 495 | 112 + 6 + 3 * NGX_ATOMIC_T_LEN |
| 113 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_ATOMIC_T_LEN; | |
| 487 | 114 |
| 501 | 115 b = ngx_create_temp_buf(r->pool, size); |
| 116 if (b == NULL) { | |
| 487 | 117 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 118 } | |
| 119 | |
| 120 out.buf = b; | |
| 121 out.next = NULL; | |
| 122 | |
| 123 ap = *ngx_stat_accepted; | |
| 495 | 124 hn = *ngx_stat_handled; |
| 487 | 125 ac = *ngx_stat_active; |
| 126 rq = *ngx_stat_requests; | |
| 127 rd = *ngx_stat_reading; | |
| 128 wr = *ngx_stat_writing; | |
| 129 | |
| 509 | 130 b->last = ngx_sprintf(b->last, "Active connections: %uA \n", ac); |
| 487 | 131 |
| 132 b->last = ngx_cpymem(b->last, "server accepts handled requests\n", | |
| 133 sizeof("server accepts handled requests\n") - 1); | |
| 134 | |
| 509 | 135 b->last = ngx_sprintf(b->last, " %uA %uA %uA \n", ap, hn, rq); |
| 487 | 136 |
| 509 | 137 b->last = ngx_sprintf(b->last, "Reading: %uA Writing: %uA Waiting: %uA \n", |
| 493 | 138 rd, wr, ac - (rd + wr)); |
| 487 | 139 |
| 140 r->headers_out.status = NGX_HTTP_OK; | |
| 141 r->headers_out.content_length_n = b->last - b->pos; | |
| 142 | |
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143 b->last_buf = (r == r->main) ? 1 : 0; |
| 487 | 144 |
| 145 rc = ngx_http_send_header(r); | |
| 146 | |
| 147 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
| 148 return rc; | |
| 149 } | |
| 150 | |
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151 return ngx_http_output_filter(r, &out); |
| 487 | 152 } |
| 153 | |
| 154 | |
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155 static ngx_int_t |
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156 ngx_http_stub_status_variable(ngx_http_request_t *r, |
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157 ngx_http_variable_value_t *v, uintptr_t data) |
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158 { |
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159 u_char *p; |
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160 ngx_atomic_int_t value; |
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161 |
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162 p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN); |
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163 if (p == NULL) { |
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164 return NGX_ERROR; |
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165 } |
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166 |
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167 switch (data) { |
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168 case 0: |
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169 value = *ngx_stat_active; |
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170 break; |
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171 |
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172 case 1: |
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173 value = *ngx_stat_reading; |
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174 break; |
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175 |
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176 case 2: |
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177 value = *ngx_stat_writing; |
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178 break; |
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179 |
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180 /* suppress warning */ |
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181 default: |
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182 value = 0; |
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183 break; |
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184 } |
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185 |
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186 v->len = ngx_sprintf(p, "%uA", value) - p; |
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187 v->valid = 1; |
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188 v->no_cacheable = 0; |
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189 v->not_found = 0; |
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190 v->data = p; |
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191 |
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192 return NGX_OK; |
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193 } |
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194 |
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195 |
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196 static ngx_int_t |
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197 ngx_http_stub_status_add_variables(ngx_conf_t *cf) |
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198 { |
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199 ngx_http_variable_t *var, *v; |
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200 |
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201 for (v = ngx_http_stub_status_vars; v->name.len; v++) { |
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202 var = ngx_http_add_variable(cf, &v->name, v->flags); |
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203 if (var == NULL) { |
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204 return NGX_ERROR; |
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205 } |
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206 |
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207 var->get_handler = v->get_handler; |
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208 var->data = v->data; |
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209 } |
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210 |
|
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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211 return NGX_OK; |
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1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
|
212 } |
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1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
|
213 |
|
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
|
214 |
| 487 | 215 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| 216 { | |
| 217 ngx_http_core_loc_conf_t *clcf; | |
| 218 | |
| 219 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 220 clcf->handler = ngx_http_status_handler; | |
| 221 | |
| 222 return NGX_CONF_OK; | |
| 223 } |