Mercurial > hg > nginx
annotate src/http/ngx_http_postpone_filter_module.c @ 3672:4f021d4ceb88
fix building by owc12: GetLongPathName() is available since Win2K only
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 05 Jul 2010 12:47:35 +0000 |
parents | 23e6f26fb4bd |
children | d620f497c50f |
rev | line source |
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509 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_http.h> | |
10 | |
11 | |
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12 static ngx_int_t ngx_http_postpone_filter_add(ngx_http_request_t *r, |
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13 ngx_chain_t *in); |
681 | 14 static ngx_int_t ngx_http_postpone_filter_init(ngx_conf_t *cf); |
509 | 15 |
16 | |
17 static ngx_http_module_t ngx_http_postpone_filter_module_ctx = { | |
18 NULL, /* preconfiguration */ | |
681 | 19 ngx_http_postpone_filter_init, /* postconfiguration */ |
509 | 20 |
21 NULL, /* create main configuration */ | |
22 NULL, /* init main configuration */ | |
23 | |
24 NULL, /* create server configuration */ | |
25 NULL, /* merge server configuration */ | |
26 | |
27 NULL, /* create location configuration */ | |
28 NULL /* merge location configuration */ | |
29 }; | |
30 | |
31 | |
32 ngx_module_t ngx_http_postpone_filter_module = { | |
33 NGX_MODULE_V1, | |
34 &ngx_http_postpone_filter_module_ctx, /* module context */ | |
35 NULL, /* module directives */ | |
36 NGX_HTTP_MODULE, /* module type */ | |
541 | 37 NULL, /* init master */ |
681 | 38 NULL, /* init module */ |
541 | 39 NULL, /* init process */ |
40 NULL, /* init thread */ | |
41 NULL, /* exit thread */ | |
42 NULL, /* exit process */ | |
43 NULL, /* exit master */ | |
44 NGX_MODULE_V1_PADDING | |
509 | 45 }; |
46 | |
47 | |
48 static ngx_http_output_body_filter_pt ngx_http_next_filter; | |
49 | |
50 | |
51 static ngx_int_t | |
52 ngx_http_postpone_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
53 { | |
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54 ngx_connection_t *c; |
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55 ngx_http_postponed_request_t *pr; |
509 | 56 |
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57 c = r->connection; |
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58 |
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59 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
583 | 60 "http postpone filter \"%V?%V\" %p", &r->uri, &r->args, in); |
527 | 61 |
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62 if (r != c->data) { |
509 | 63 |
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64 if (in) { |
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65 ngx_http_postpone_filter_add(r, in); |
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66 return NGX_OK; |
509 | 67 } |
68 | |
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69 #if 0 |
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70 /* TODO: SSI may pass NULL */ |
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71 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
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72 "http postpone filter NULL inactive request", |
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73 &r->uri, &r->args); |
641 | 74 #endif |
75 | |
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76 return NGX_OK; |
583 | 77 } |
78 | |
79 if (r->postponed == NULL) { | |
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80 |
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81 if (in || c->buffered) { |
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82 return ngx_http_next_filter(r->main, in); |
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83 } |
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84 |
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85 return NGX_OK; |
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86 } |
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87 |
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88 if (in) { |
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89 ngx_http_postpone_filter_add(r, in); |
583 | 90 } |
91 | |
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92 do { |
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93 pr = r->postponed; |
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94 |
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95 if (pr->request) { |
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96 |
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97 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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98 "http postpone filter wake \"%V?%V\"", |
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99 &pr->request->uri, &pr->request->args); |
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100 |
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101 r->postponed = pr->next; |
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102 |
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103 c->data = pr->request; |
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104 |
3064 | 105 return ngx_http_post_request(pr->request, NULL); |
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106 } |
583 | 107 |
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108 if (pr->out == NULL) { |
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109 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
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110 "http postpone filter NULL output", |
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111 &r->uri, &r->args); |
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112 |
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113 } else { |
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114 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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115 "http postpone filter output \"%V?%V\"", |
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116 &r->uri, &r->args); |
509 | 117 |
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118 if (ngx_http_next_filter(r->main, pr->out) == NGX_ERROR) { |
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119 return NGX_ERROR; |
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120 } |
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121 } |
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122 |
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123 r->postponed = pr->next; |
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124 |
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125 } while (r->postponed); |
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126 |
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127 return NGX_OK; |
509 | 128 } |
129 | |
130 | |
131 static ngx_int_t | |
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132 ngx_http_postpone_filter_add(ngx_http_request_t *r, ngx_chain_t *in) |
583 | 133 { |
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134 ngx_http_postponed_request_t *pr, **ppr; |
583 | 135 |
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136 if (r->postponed) { |
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137 for (pr = r->postponed; pr->next; pr = pr->next) { /* void */ } |
583 | 138 |
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139 if (pr->request == NULL) { |
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140 goto found; |
583 | 141 } |
142 | |
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143 ppr = &pr->next; |
583 | 144 |
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145 } else { |
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146 ppr = &r->postponed; |
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147 } |
595 | 148 |
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149 pr = ngx_palloc(r->pool, sizeof(ngx_http_postponed_request_t)); |
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150 if (pr == NULL) { |
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151 return NGX_ERROR; |
583 | 152 } |
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153 |
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154 *ppr = pr; |
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155 |
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156 pr->request = NULL; |
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157 pr->out = NULL; |
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158 pr->next = NULL; |
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159 |
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160 found: |
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161 |
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162 if (ngx_chain_add_copy(r->pool, &pr->out, in) == NGX_OK) { |
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163 return NGX_OK; |
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164 } |
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165 |
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166 return NGX_ERROR; |
583 | 167 } |
168 | |
169 | |
170 static ngx_int_t | |
681 | 171 ngx_http_postpone_filter_init(ngx_conf_t *cf) |
509 | 172 { |
173 ngx_http_next_filter = ngx_http_top_body_filter; | |
174 ngx_http_top_body_filter = ngx_http_postpone_filter; | |
175 | |
176 return NGX_OK; | |
177 } |