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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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464
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10 #include <ngx_md5.h>
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0
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11
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12
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518
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13 static ngx_int_t ngx_http_file_cache_read(ngx_http_request_t *r,
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14 ngx_http_cache_t *c);
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542
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15 static ssize_t ngx_http_file_cache_aio_read(ngx_http_request_t *r,
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16 ngx_http_cache_t *c);
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518
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17 #if (NGX_HAVE_FILE_AIO)
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18 static void ngx_http_cache_aio_event_handler(ngx_event_t *ev);
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19 #endif
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468
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20 static ngx_int_t ngx_http_file_cache_exists(ngx_http_file_cache_t *cache,
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21 ngx_http_cache_t *c);
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588
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22 static ngx_int_t ngx_http_file_cache_name(ngx_http_request_t *r,
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23 ngx_path_t *path);
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464
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24 static ngx_http_file_cache_node_t *
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25 ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key);
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26 static void ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
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27 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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28 static void ngx_http_file_cache_cleanup(void *data);
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468
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29 static time_t ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache);
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30 static time_t ngx_http_file_cache_expire(ngx_http_file_cache_t *cache);
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31 static void ngx_http_file_cache_delete(ngx_http_file_cache_t *cache,
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32 ngx_queue_t *q, u_char *name);
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33 static ngx_int_t
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632
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34 ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache);
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468
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35 static ngx_int_t ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx,
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464
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36 ngx_str_t *path);
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468
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37 static ngx_int_t ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx,
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38 ngx_str_t *path);
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39 static ngx_int_t ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx,
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40 ngx_str_t *path);
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41 static ngx_int_t ngx_http_file_cache_add(ngx_http_file_cache_t *cache,
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42 ngx_http_cache_t *c);
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43 static ngx_int_t ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx,
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464
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44 ngx_str_t *path);
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0
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45
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46
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502
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47 ngx_str_t ngx_http_cache_status[] = {
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48 ngx_string("MISS"),
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588
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49 ngx_string("BYPASS"),
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502
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50 ngx_string("EXPIRED"),
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51 ngx_string("STALE"),
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52 ngx_string("UPDATING"),
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53 ngx_string("HIT")
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54 };
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55
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56
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464
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57 static u_char ngx_http_file_cache_key[] = { LF, 'K', 'E', 'Y', ':', ' ' };
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0
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58
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59
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464
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60 static ngx_int_t
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61 ngx_http_file_cache_init(ngx_shm_zone_t *shm_zone, void *data)
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0
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62 {
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464
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63 ngx_http_file_cache_t *ocache = data;
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0
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64
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468
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65 size_t len;
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514
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66 ngx_uint_t n;
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464
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67 ngx_http_file_cache_t *cache;
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0
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68
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464
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69 cache = shm_zone->data;
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0
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70
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464
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71 if (ocache) {
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72 if (ngx_strcmp(cache->path->name.data, ocache->path->name.data) != 0) {
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73 ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
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74 "cache \"%V\" uses the \"%V\" cache path "
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75 "while previously it used the \"%V\" cache path",
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480
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76 &shm_zone->shm.name, &cache->path->name,
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464
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77 &ocache->path->name);
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0
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78
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79 return NGX_ERROR;
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80 }
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81
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514
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82 for (n = 0; n < 3; n++) {
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83 if (cache->path->level[n] != ocache->path->level[n]) {
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84 ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
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85 "cache \"%V\" had previously different levels",
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86 &shm_zone->shm.name);
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87 return NGX_ERROR;
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88 }
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89 }
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90
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480
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91 cache->sh = ocache->sh;
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92
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464
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93 cache->shpool = ocache->shpool;
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468
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94 cache->bsize = ocache->bsize;
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95
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96 cache->max_size /= cache->bsize;
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464
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97
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514
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98 if (!cache->sh->cold || cache->sh->loading) {
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99 cache->path->loader = NULL;
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100 }
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101
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464
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102 return NGX_OK;
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103 }
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104
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105 cache->shpool = (ngx_slab_pool_t *) shm_zone->shm.addr;
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106
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480
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107 if (shm_zone->shm.exists) {
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108 cache->sh = cache->shpool->data;
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109 cache->bsize = ngx_fs_bsize(cache->path->name.data);
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110
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111 return NGX_OK;
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464
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112 }
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113
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480
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114 cache->sh = ngx_slab_alloc(cache->shpool, sizeof(ngx_http_file_cache_sh_t));
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115 if (cache->sh == NULL) {
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464
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116 return NGX_ERROR;
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117 }
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118
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480
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119 cache->shpool->data = cache->sh;
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120
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121 ngx_rbtree_init(&cache->sh->rbtree, &cache->sh->sentinel,
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464
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122 ngx_http_file_cache_rbtree_insert_value);
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123
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480
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124 ngx_queue_init(&cache->sh->queue);
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464
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125
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480
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126 cache->sh->cold = 1;
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514
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127 cache->sh->loading = 0;
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480
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128 cache->sh->size = 0;
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468
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129
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130 cache->bsize = ngx_fs_bsize(cache->path->name.data);
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131
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132 cache->max_size /= cache->bsize;
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133
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480
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134 len = sizeof(" in cache keys zone \"\"") + shm_zone->shm.name.len;
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468
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135
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136 cache->shpool->log_ctx = ngx_slab_alloc(cache->shpool, len);
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137 if (cache->shpool->log_ctx == NULL) {
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138 return NGX_ERROR;
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139 }
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140
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141 ngx_sprintf(cache->shpool->log_ctx, " in cache keys zone \"%V\"%Z",
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480
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142 &shm_zone->shm.name);
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464
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143
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144 return NGX_OK;
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145 }
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146
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147
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588
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148 ngx_int_t
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149 ngx_http_file_cache_new(ngx_http_request_t *r)
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150 {
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151 ngx_http_cache_t *c;
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152
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153 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
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154 if (c == NULL) {
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155 return NGX_ERROR;
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156 }
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157
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158 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
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159 return NGX_ERROR;
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160 }
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161
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162 r->cache = c;
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163 c->file.log = r->connection->log;
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590
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164 c->file.fd = NGX_INVALID_FILE;
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588
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165
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166 return NGX_OK;
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167 }
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168
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169
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170 ngx_int_t
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171 ngx_http_file_cache_create(ngx_http_request_t *r)
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172 {
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173 ngx_http_cache_t *c;
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174 ngx_pool_cleanup_t *cln;
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175 ngx_http_file_cache_t *cache;
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176
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177 c = r->cache;
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178 cache = c->file_cache;
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179
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180 cln = ngx_pool_cleanup_add(r->pool, 0);
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181 if (cln == NULL) {
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182 return NGX_ERROR;
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183 }
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184
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185 if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) {
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186 return NGX_ERROR;
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187 }
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188
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189 cln->handler = ngx_http_file_cache_cleanup;
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190 cln->data = c;
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191
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192 if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
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193 return NGX_ERROR;
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194 }
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195
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196 return NGX_OK;
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197 }
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198
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199
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464
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200 void
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201 ngx_http_file_cache_create_key(ngx_http_request_t *r)
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202 {
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203 size_t len;
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204 ngx_str_t *key;
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205 ngx_uint_t i;
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206 ngx_md5_t md5;
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207 ngx_http_cache_t *c;
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208
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209 c = r->cache;
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210
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211 len = 0;
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212
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213 ngx_crc32_init(c->crc32);
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214 ngx_md5_init(&md5);
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215
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216 key = c->keys.elts;
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217 for (i = 0; i < c->keys.nelts; i++) {
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218 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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219 "http cache key: \"%V\"", &key[i]);
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220
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221 len += key[i].len;
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222
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223 ngx_crc32_update(&c->crc32, key[i].data, key[i].len);
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224 ngx_md5_update(&md5, key[i].data, key[i].len);
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225 }
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226
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227 c->header_start = sizeof(ngx_http_file_cache_header_t)
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228 + sizeof(ngx_http_file_cache_key) + len + 1;
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229
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230 ngx_crc32_final(c->crc32);
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231 ngx_md5_final(c->key, &md5);
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232 }
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233
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234
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235 ngx_int_t
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236 ngx_http_file_cache_open(ngx_http_request_t *r)
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237 {
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518
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238 ngx_int_t rc, rv;
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239 ngx_uint_t cold, test;
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240 ngx_http_cache_t *c;
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241 ngx_pool_cleanup_t *cln;
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242 ngx_open_file_info_t of;
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243 ngx_http_file_cache_t *cache;
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244 ngx_http_core_loc_conf_t *clcf;
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464
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245
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246 c = r->cache;
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518
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247
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248 if (c->buf) {
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249 return ngx_http_file_cache_read(r, c);
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250 }
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251
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464
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252 cache = c->file_cache;
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253
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254 cln = ngx_pool_cleanup_add(r->pool, 0);
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255 if (cln == NULL) {
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256 return NGX_ERROR;
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257 }
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258
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468
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259 rc = ngx_http_file_cache_exists(cache, c);
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464
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260
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498
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261 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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262 "http file cache exists: %i e:%d", rc, c->exists);
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464
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263
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264 if (rc == NGX_ERROR) {
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265 return rc;
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266 }
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267
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268 cln->handler = ngx_http_file_cache_cleanup;
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269 cln->data = c;
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270
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271 if (rc == NGX_AGAIN) {
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518
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272 return NGX_HTTP_CACHE_SCARCE;
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464
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273 }
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274
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480
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275 cold = cache->sh->cold;
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464
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276
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277 if (rc == NGX_OK) {
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278
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279 if (c->error) {
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280 return c->error;
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281 }
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282
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283 c->temp_file = 1;
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284 test = c->exists ? 1 : 0;
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285 rv = NGX_DECLINED;
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286
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287 } else { /* rc == NGX_DECLINED */
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288
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289 if (c->min_uses > 1) {
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290
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291 if (!cold) {
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518
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292 return NGX_HTTP_CACHE_SCARCE;
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0
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293 }
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294
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464
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295 test = 1;
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518
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296 rv = NGX_HTTP_CACHE_SCARCE;
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464
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297
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298 } else {
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299 c->temp_file = 1;
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300 test = cold ? 1 : 0;
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301 rv = NGX_DECLINED;
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0
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302 }
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303 }
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304
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588
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305 if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
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464
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306 return NGX_ERROR;
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307 }
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308
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309 if (!test) {
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310 return NGX_DECLINED;
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311 }
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312
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313 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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314
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315 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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0
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316
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464
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317 of.uniq = c->uniq;
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318 of.valid = clcf->open_file_cache_valid;
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319 of.min_uses = clcf->open_file_cache_min_uses;
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320 of.events = clcf->open_file_cache_events;
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321 of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
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532
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322 of.read_ahead = clcf->read_ahead;
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464
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323
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324 if (ngx_open_cached_file(clcf->open_file_cache, &c->file.name, &of, r->pool)
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325 != NGX_OK)
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326 {
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327 switch (of.err) {
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328
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329 case 0:
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330 return NGX_ERROR;
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331
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332 case NGX_ENOENT:
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333 case NGX_ENOTDIR:
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334 return rv;
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335
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336 default:
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337 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
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338 ngx_open_file_n " \"%s\" failed", c->file.name.data);
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339 return NGX_ERROR;
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340 }
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341 }
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342
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343 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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344 "http file cache fd: %d", of.fd);
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345
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346 c->file.fd = of.fd;
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466
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347 c->file.log = r->connection->log;
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518
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348 c->uniq = of.uniq;
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349 c->length = of.size;
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622
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350 c->fs_size = (of.fs_size + cache->bsize - 1) / cache->bsize;
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464
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351
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352 c->buf = ngx_create_temp_buf(r->pool, c->body_start);
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353 if (c->buf == NULL) {
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354 return NGX_ERROR;
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355 }
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356
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518
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357 return ngx_http_file_cache_read(r, c);
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358 }
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359
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360
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361 static ngx_int_t
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362 ngx_http_file_cache_read(ngx_http_request_t *r, ngx_http_cache_t *c)
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363 {
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364 time_t now;
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365 ssize_t n;
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366 ngx_int_t rc;
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367 ngx_http_file_cache_t *cache;
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368 ngx_http_file_cache_header_t *h;
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369
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542
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370 n = ngx_http_file_cache_aio_read(r, c);
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518
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371
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542
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372 if (n < 0) {
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0
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373 return n;
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374 }
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375
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554
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376 if ((size_t) n < c->header_start) {
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464
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377 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
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26
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378 "cache file \"%s\" is too small", c->file.name.data);
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632
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379 return NGX_DECLINED;
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|
0
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380 }
|
|
|
381
|
|
464
|
382 h = (ngx_http_file_cache_header_t *) c->buf->pos;
|
|
0
|
383
|
|
564
|
384 if (h->crc32 != c->crc32) {
|
|
464
|
385 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
|
|
|
386 "cache file \"%s\" has md5 collision", c->file.name.data);
|
|
0
|
387 return NGX_DECLINED;
|
|
|
388 }
|
|
|
389
|
|
464
|
390 c->buf->last += n;
|
|
26
|
391
|
|
464
|
392 c->valid_sec = h->valid_sec;
|
|
|
393 c->last_modified = h->last_modified;
|
|
|
394 c->date = h->date;
|
|
|
395 c->valid_msec = h->valid_msec;
|
|
564
|
396 c->header_start = h->header_start;
|
|
464
|
397 c->body_start = h->body_start;
|
|
26
|
398
|
|
464
|
399 r->cached = 1;
|
|
|
400
|
|
518
|
401 cache = c->file_cache;
|
|
|
402
|
|
|
403 if (cache->sh->cold) {
|
|
464
|
404
|
|
|
405 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
26
|
406
|
|
468
|
407 if (!c->node->exists) {
|
|
|
408 c->node->uses = 1;
|
|
|
409 c->node->body_start = c->body_start;
|
|
|
410 c->node->exists = 1;
|
|
518
|
411 c->node->uniq = c->uniq;
|
|
632
|
412 c->node->fs_size = c->fs_size;
|
|
468
|
413
|
|
622
|
414 cache->sh->size += c->fs_size;
|
|
468
|
415 }
|
|
464
|
416
|
|
|
417 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
0
|
418 }
|
|
|
419
|
|
468
|
420 now = ngx_time();
|
|
|
421
|
|
464
|
422 if (c->valid_sec < now) {
|
|
0
|
423
|
|
498
|
424 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
0
|
425
|
|
498
|
426 if (c->node->updating) {
|
|
|
427 rc = NGX_HTTP_CACHE_UPDATING;
|
|
464
|
428
|
|
498
|
429 } else {
|
|
|
430 c->node->updating = 1;
|
|
590
|
431 c->updating = 1;
|
|
498
|
432 rc = NGX_HTTP_CACHE_STALE;
|
|
|
433 }
|
|
|
434
|
|
|
435 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
436
|
|
|
437 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
438 "http file cache expired: %i %T %T",
|
|
|
439 rc, c->valid_sec, now);
|
|
|
440
|
|
|
441 return rc;
|
|
0
|
442 }
|
|
|
443
|
|
464
|
444 return NGX_OK;
|
|
|
445 }
|
|
|
446
|
|
|
447
|
|
542
|
448 static ssize_t
|
|
|
449 ngx_http_file_cache_aio_read(ngx_http_request_t *r, ngx_http_cache_t *c)
|
|
|
450 {
|
|
518
|
451 #if (NGX_HAVE_FILE_AIO)
|
|
542
|
452 ssize_t n;
|
|
|
453 ngx_http_core_loc_conf_t *clcf;
|
|
518
|
454
|
|
542
|
455 if (!ngx_file_aio) {
|
|
|
456 goto noaio;
|
|
|
457 }
|
|
|
458
|
|
|
459 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
460
|
|
|
461 if (!clcf->aio) {
|
|
|
462 goto noaio;
|
|
|
463 }
|
|
|
464
|
|
|
465 n = ngx_file_aio_read(&c->file, c->buf->pos, c->body_start, 0, r->pool);
|
|
|
466
|
|
|
467 if (n != NGX_AGAIN) {
|
|
|
468 return n;
|
|
|
469 }
|
|
|
470
|
|
|
471 c->file.aio->data = r;
|
|
|
472 c->file.aio->handler = ngx_http_cache_aio_event_handler;
|
|
|
473
|
|
|
474 r->main->blocked++;
|
|
|
475 r->aio = 1;
|
|
|
476
|
|
|
477 return NGX_AGAIN;
|
|
|
478
|
|
|
479 noaio:
|
|
|
480
|
|
|
481 #endif
|
|
|
482
|
|
|
483 return ngx_read_file(&c->file, c->buf->pos, c->body_start, 0);
|
|
|
484 }
|
|
|
485
|
|
|
486
|
|
|
487 #if (NGX_HAVE_FILE_AIO)
|
|
518
|
488
|
|
|
489 static void
|
|
|
490 ngx_http_cache_aio_event_handler(ngx_event_t *ev)
|
|
|
491 {
|
|
|
492 ngx_event_aio_t *aio;
|
|
|
493 ngx_http_request_t *r;
|
|
|
494
|
|
|
495 aio = ev->data;
|
|
|
496 r = aio->data;
|
|
|
497
|
|
|
498 r->main->blocked--;
|
|
|
499 r->aio = 0;
|
|
|
500
|
|
|
501 r->connection->write->handler(r->connection->write);
|
|
|
502 }
|
|
|
503
|
|
|
504 #endif
|
|
|
505
|
|
|
506
|
|
464
|
507 static ngx_int_t
|
|
468
|
508 ngx_http_file_cache_exists(ngx_http_file_cache_t *cache, ngx_http_cache_t *c)
|
|
464
|
509 {
|
|
|
510 ngx_int_t rc;
|
|
|
511 ngx_http_file_cache_node_t *fcn;
|
|
|
512
|
|
|
513 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
514
|
|
468
|
515 fcn = ngx_http_file_cache_lookup(cache, c->key);
|
|
464
|
516
|
|
|
517 if (fcn) {
|
|
|
518 ngx_queue_remove(&fcn->queue);
|
|
|
519
|
|
592
|
520 fcn->uses++;
|
|
|
521 fcn->count++;
|
|
|
522
|
|
464
|
523 if (fcn->error) {
|
|
|
524
|
|
|
525 if (fcn->valid_sec < ngx_time()) {
|
|
|
526 goto renew;
|
|
|
527 }
|
|
|
528
|
|
|
529 rc = NGX_OK;
|
|
|
530
|
|
|
531 goto done;
|
|
|
532 }
|
|
|
533
|
|
632
|
534 if (fcn->exists || fcn->uses >= c->min_uses) {
|
|
464
|
535
|
|
468
|
536 c->exists = fcn->exists;
|
|
632
|
537 if (fcn->body_start) {
|
|
|
538 c->body_start = fcn->body_start;
|
|
|
539 }
|
|
464
|
540
|
|
|
541 rc = NGX_OK;
|
|
|
542
|
|
|
543 goto done;
|
|
|
544 }
|
|
|
545
|
|
632
|
546 rc = NGX_AGAIN;
|
|
464
|
547
|
|
|
548 goto done;
|
|
|
549 }
|
|
|
550
|
|
|
551 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
552 sizeof(ngx_http_file_cache_node_t));
|
|
|
553 if (fcn == NULL) {
|
|
|
554 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
555
|
|
478
|
556 (void) ngx_http_file_cache_forced_expire(cache);
|
|
464
|
557
|
|
|
558 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
559
|
|
|
560 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
561 sizeof(ngx_http_file_cache_node_t));
|
|
|
562 if (fcn == NULL) {
|
|
|
563 rc = NGX_ERROR;
|
|
|
564 goto failed;
|
|
|
565 }
|
|
|
566 }
|
|
|
567
|
|
468
|
568 ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
|
|
464
|
569
|
|
468
|
570 ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
|
|
464
|
571 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
572
|
|
480
|
573 ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
|
|
464
|
574
|
|
592
|
575 fcn->uses = 1;
|
|
|
576 fcn->count = 1;
|
|
594
|
577 fcn->updating = 0;
|
|
596
|
578 fcn->deleting = 0;
|
|
592
|
579
|
|
464
|
580 renew:
|
|
|
581
|
|
|
582 rc = NGX_DECLINED;
|
|
|
583
|
|
|
584 fcn->valid_msec = 0;
|
|
|
585 fcn->error = 0;
|
|
|
586 fcn->exists = 0;
|
|
|
587 fcn->valid_sec = 0;
|
|
|
588 fcn->uniq = 0;
|
|
|
589 fcn->body_start = 0;
|
|
622
|
590 fcn->fs_size = 0;
|
|
464
|
591
|
|
|
592 done:
|
|
|
593
|
|
|
594 fcn->expire = ngx_time() + cache->inactive;
|
|
|
595
|
|
480
|
596 ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
|
|
464
|
597
|
|
468
|
598 c->uniq = fcn->uniq;
|
|
|
599 c->error = fcn->error;
|
|
|
600 c->node = fcn;
|
|
464
|
601
|
|
|
602 failed:
|
|
|
603
|
|
|
604 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
605
|
|
|
606 return rc;
|
|
|
607 }
|
|
|
608
|
|
|
609
|
|
588
|
610 static ngx_int_t
|
|
|
611 ngx_http_file_cache_name(ngx_http_request_t *r, ngx_path_t *path)
|
|
|
612 {
|
|
|
613 u_char *p;
|
|
|
614 ngx_http_cache_t *c;
|
|
|
615
|
|
|
616 c = r->cache;
|
|
|
617
|
|
|
618 c->file.name.len = path->name.len + 1 + path->len
|
|
|
619 + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
620
|
|
|
621 c->file.name.data = ngx_pnalloc(r->pool, c->file.name.len + 1);
|
|
|
622 if (c->file.name.data == NULL) {
|
|
|
623 return NGX_ERROR;
|
|
|
624 }
|
|
|
625
|
|
|
626 ngx_memcpy(c->file.name.data, path->name.data, path->name.len);
|
|
|
627
|
|
|
628 p = c->file.name.data + path->name.len + 1 + path->len;
|
|
|
629 p = ngx_hex_dump(p, c->key, NGX_HTTP_CACHE_KEY_LEN);
|
|
|
630 *p = '\0';
|
|
|
631
|
|
|
632 ngx_create_hashed_filename(path, c->file.name.data, c->file.name.len);
|
|
|
633
|
|
|
634 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
635 "cache file: \"%s\"", c->file.name.data);
|
|
|
636
|
|
|
637 return NGX_OK;
|
|
|
638 }
|
|
|
639
|
|
|
640
|
|
464
|
641 static ngx_http_file_cache_node_t *
|
|
|
642 ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key)
|
|
|
643 {
|
|
|
644 ngx_int_t rc;
|
|
|
645 ngx_rbtree_key_t node_key;
|
|
|
646 ngx_rbtree_node_t *node, *sentinel;
|
|
|
647 ngx_http_file_cache_node_t *fcn;
|
|
|
648
|
|
|
649 ngx_memcpy((u_char *) &node_key, key, sizeof(ngx_rbtree_key_t));
|
|
|
650
|
|
480
|
651 node = cache->sh->rbtree.root;
|
|
|
652 sentinel = cache->sh->rbtree.sentinel;
|
|
464
|
653
|
|
|
654 while (node != sentinel) {
|
|
|
655
|
|
|
656 if (node_key < node->key) {
|
|
|
657 node = node->left;
|
|
|
658 continue;
|
|
|
659 }
|
|
|
660
|
|
|
661 if (node_key > node->key) {
|
|
|
662 node = node->right;
|
|
|
663 continue;
|
|
|
664 }
|
|
|
665
|
|
|
666 /* node_key == node->key */
|
|
|
667
|
|
|
668 do {
|
|
|
669 fcn = (ngx_http_file_cache_node_t *) node;
|
|
|
670
|
|
|
671 rc = ngx_memcmp(&key[sizeof(ngx_rbtree_key_t)], fcn->key,
|
|
|
672 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
673
|
|
|
674 if (rc == 0) {
|
|
|
675 return fcn;
|
|
|
676 }
|
|
|
677
|
|
|
678 node = (rc < 0) ? node->left : node->right;
|
|
|
679
|
|
|
680 } while (node != sentinel && node_key == node->key);
|
|
|
681
|
|
|
682 break;
|
|
|
683 }
|
|
|
684
|
|
|
685 /* not found */
|
|
|
686
|
|
|
687 return NULL;
|
|
|
688 }
|
|
|
689
|
|
|
690
|
|
|
691 static void
|
|
|
692 ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
|
|
|
693 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
|
|
|
694 {
|
|
|
695 ngx_rbtree_node_t **p;
|
|
|
696 ngx_http_file_cache_node_t *cn, *cnt;
|
|
|
697
|
|
|
698 for ( ;; ) {
|
|
|
699
|
|
|
700 if (node->key < temp->key) {
|
|
|
701
|
|
|
702 p = &temp->left;
|
|
|
703
|
|
|
704 } else if (node->key > temp->key) {
|
|
|
705
|
|
|
706 p = &temp->right;
|
|
|
707
|
|
|
708 } else { /* node->key == temp->key */
|
|
|
709
|
|
|
710 cn = (ngx_http_file_cache_node_t *) node;
|
|
|
711 cnt = (ngx_http_file_cache_node_t *) temp;
|
|
|
712
|
|
|
713 p = (ngx_memcmp(cn->key, cnt->key,
|
|
|
714 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t))
|
|
|
715 < 0)
|
|
|
716 ? &temp->left : &temp->right;
|
|
|
717 }
|
|
|
718
|
|
|
719 if (*p == sentinel) {
|
|
|
720 break;
|
|
|
721 }
|
|
|
722
|
|
|
723 temp = *p;
|
|
|
724 }
|
|
|
725
|
|
|
726 *p = node;
|
|
|
727 node->parent = temp;
|
|
|
728 node->left = sentinel;
|
|
|
729 node->right = sentinel;
|
|
|
730 ngx_rbt_red(node);
|
|
|
731 }
|
|
|
732
|
|
|
733
|
|
|
734 void
|
|
|
735 ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf)
|
|
|
736 {
|
|
|
737 ngx_http_file_cache_header_t *h = (ngx_http_file_cache_header_t *) buf;
|
|
|
738
|
|
|
739 u_char *p;
|
|
|
740 ngx_str_t *key;
|
|
|
741 ngx_uint_t i;
|
|
|
742 ngx_http_cache_t *c;
|
|
|
743
|
|
|
744 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
745 "http file cache set header");
|
|
|
746
|
|
|
747 c = r->cache;
|
|
|
748
|
|
|
749 h->valid_sec = c->valid_sec;
|
|
|
750 h->last_modified = c->last_modified;
|
|
|
751 h->date = c->date;
|
|
|
752 h->crc32 = c->crc32;
|
|
|
753 h->valid_msec = (u_short) c->valid_msec;
|
|
|
754 h->header_start = (u_short) c->header_start;
|
|
|
755 h->body_start = (u_short) c->body_start;
|
|
|
756
|
|
|
757 p = buf + sizeof(ngx_http_file_cache_header_t);
|
|
|
758
|
|
|
759 p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key));
|
|
|
760
|
|
|
761 key = c->keys.elts;
|
|
|
762 for (i = 0; i < c->keys.nelts; i++) {
|
|
|
763 p = ngx_copy(p, key[i].data, key[i].len);
|
|
|
764 }
|
|
|
765
|
|
|
766 *p = LF;
|
|
|
767 }
|
|
|
768
|
|
|
769
|
|
|
770 void
|
|
|
771 ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf)
|
|
|
772 {
|
|
622
|
773 off_t fs_size;
|
|
464
|
774 ngx_int_t rc;
|
|
|
775 ngx_file_uniq_t uniq;
|
|
|
776 ngx_file_info_t fi;
|
|
|
777 ngx_http_cache_t *c;
|
|
|
778 ngx_ext_rename_file_t ext;
|
|
|
779 ngx_http_file_cache_t *cache;
|
|
|
780
|
|
|
781 c = r->cache;
|
|
|
782
|
|
|
783 if (c->updated) {
|
|
|
784 return;
|
|
|
785 }
|
|
|
786
|
|
|
787 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
788 "http file cache update");
|
|
|
789
|
|
|
790 c->updated = 1;
|
|
590
|
791 c->updating = 0;
|
|
464
|
792
|
|
|
793 cache = c->file_cache;
|
|
|
794
|
|
|
795 uniq = 0;
|
|
622
|
796 fs_size = 0;
|
|
464
|
797
|
|
|
798 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
799 "http file cache rename: \"%s\" to \"%s\"",
|
|
|
800 tf->file.name.data, c->file.name.data);
|
|
|
801
|
|
|
802 ext.access = NGX_FILE_OWNER_ACCESS;
|
|
|
803 ext.path_access = NGX_FILE_OWNER_ACCESS;
|
|
|
804 ext.time = -1;
|
|
|
805 ext.create_path = 1;
|
|
|
806 ext.delete_file = 1;
|
|
|
807 ext.log = r->connection->log;
|
|
|
808
|
|
|
809 rc = ngx_ext_rename_file(&tf->file.name, &c->file.name, &ext);
|
|
|
810
|
|
|
811 if (rc == NGX_OK) {
|
|
|
812
|
|
|
813 if (ngx_fd_info(tf->file.fd, &fi) == NGX_FILE_ERROR) {
|
|
|
814 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
815 ngx_fd_info_n " \"%s\" failed", tf->file.name.data);
|
|
|
816
|
|
|
817 rc = NGX_ERROR;
|
|
|
818
|
|
|
819 } else {
|
|
|
820 uniq = ngx_file_uniq(&fi);
|
|
622
|
821 fs_size = (ngx_file_fs_size(&fi) + cache->bsize - 1) / cache->bsize;
|
|
464
|
822 }
|
|
|
823 }
|
|
|
824
|
|
|
825 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
826
|
|
|
827 c->node->count--;
|
|
|
828 c->node->uniq = uniq;
|
|
|
829 c->node->body_start = c->body_start;
|
|
|
830
|
|
622
|
831 cache->sh->size += fs_size - c->node->fs_size;
|
|
|
832 c->node->fs_size = fs_size;
|
|
468
|
833
|
|
464
|
834 if (rc == NGX_OK) {
|
|
|
835 c->node->exists = 1;
|
|
|
836 }
|
|
|
837
|
|
498
|
838 c->node->updating = 0;
|
|
|
839
|
|
464
|
840 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
841 }
|
|
|
842
|
|
|
843
|
|
|
844 ngx_int_t
|
|
|
845 ngx_http_cache_send(ngx_http_request_t *r)
|
|
|
846 {
|
|
|
847 ngx_int_t rc;
|
|
|
848 ngx_buf_t *b;
|
|
|
849 ngx_chain_t out;
|
|
|
850 ngx_http_cache_t *c;
|
|
|
851
|
|
|
852 c = r->cache;
|
|
|
853
|
|
|
854 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
632
|
855 "http file cache send: %s", c->file.name.data);
|
|
464
|
856
|
|
|
857 /* we need to allocate all before the header would be sent */
|
|
|
858
|
|
|
859 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
860 if (b == NULL) {
|
|
|
861 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
862 }
|
|
|
863
|
|
|
864 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
865 if (b->file == NULL) {
|
|
|
866 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
867 }
|
|
|
868
|
|
558
|
869 r->header_only = (c->length - c->body_start) == 0;
|
|
|
870
|
|
464
|
871 rc = ngx_http_send_header(r);
|
|
|
872
|
|
|
873 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
874 return rc;
|
|
|
875 }
|
|
|
876
|
|
|
877 b->file_pos = c->body_start;
|
|
|
878 b->file_last = c->length;
|
|
|
879
|
|
558
|
880 b->in_file = 1;
|
|
464
|
881 b->last_buf = (r == r->main) ? 1: 0;
|
|
|
882 b->last_in_chain = 1;
|
|
|
883
|
|
|
884 b->file->fd = c->file.fd;
|
|
|
885 b->file->name = c->file.name;
|
|
|
886 b->file->log = r->connection->log;
|
|
|
887
|
|
|
888 out.buf = b;
|
|
|
889 out.next = NULL;
|
|
|
890
|
|
|
891 return ngx_http_output_filter(r, &out);
|
|
|
892 }
|
|
|
893
|
|
|
894
|
|
|
895 void
|
|
590
|
896 ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf)
|
|
464
|
897 {
|
|
588
|
898 ngx_http_file_cache_t *cache;
|
|
|
899 ngx_http_file_cache_node_t *fcn;
|
|
464
|
900
|
|
626
|
901 if (c->updated || c->node == NULL) {
|
|
464
|
902 return;
|
|
|
903 }
|
|
|
904
|
|
|
905 cache = c->file_cache;
|
|
|
906
|
|
590
|
907 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
|
908 "http file cache free, fd: %d", c->file.fd);
|
|
464
|
909
|
|
|
910 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
911
|
|
588
|
912 fcn = c->node;
|
|
|
913 fcn->count--;
|
|
590
|
914
|
|
|
915 if (c->updating) {
|
|
|
916 fcn->updating = 0;
|
|
|
917 }
|
|
464
|
918
|
|
|
919 if (c->error) {
|
|
588
|
920 fcn->error = c->error;
|
|
|
921
|
|
594
|
922 if (c->valid_sec) {
|
|
|
923 fcn->valid_sec = c->valid_sec;
|
|
|
924 fcn->valid_msec = c->valid_msec;
|
|
|
925 }
|
|
|
926
|
|
592
|
927 } else if (!fcn->exists && fcn->count == 0 && c->min_uses == 1) {
|
|
588
|
928 ngx_queue_remove(&fcn->queue);
|
|
|
929 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
|
930 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
931 c->node = NULL;
|
|
464
|
932 }
|
|
|
933
|
|
|
934 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
935
|
|
590
|
936 c->updated = 1;
|
|
|
937 c->updating = 0;
|
|
|
938
|
|
464
|
939 if (c->temp_file) {
|
|
|
940 if (tf && tf->file.fd != NGX_INVALID_FILE) {
|
|
590
|
941 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
464
|
942 "http file cache incomplete: \"%s\"",
|
|
|
943 tf->file.name.data);
|
|
|
944
|
|
|
945 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
590
|
946 ngx_log_error(NGX_LOG_CRIT, c->file.log, ngx_errno,
|
|
464
|
947 ngx_delete_file_n " \"%s\" failed",
|
|
|
948 tf->file.name.data);
|
|
|
949 }
|
|
|
950 }
|
|
|
951 }
|
|
|
952 }
|
|
|
953
|
|
|
954
|
|
|
955 static void
|
|
|
956 ngx_http_file_cache_cleanup(void *data)
|
|
|
957 {
|
|
|
958 ngx_http_cache_t *c = data;
|
|
|
959
|
|
|
960 if (c->updated) {
|
|
|
961 return;
|
|
|
962 }
|
|
|
963
|
|
|
964 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
|
965 "http file cache cleanup");
|
|
|
966
|
|
590
|
967 if (c->updating) {
|
|
|
968 ngx_log_error(NGX_LOG_ALERT, c->file.log, 0,
|
|
|
969 "stalled cache updating, error:%ui", c->error);
|
|
464
|
970 }
|
|
|
971
|
|
590
|
972 ngx_http_file_cache_free(c, NULL);
|
|
464
|
973 }
|
|
|
974
|
|
|
975
|
|
|
976 static time_t
|
|
468
|
977 ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache)
|
|
|
978 {
|
|
|
979 u_char *name;
|
|
|
980 size_t len;
|
|
|
981 time_t wait;
|
|
|
982 ngx_uint_t tries;
|
|
|
983 ngx_path_t *path;
|
|
|
984 ngx_queue_t *q;
|
|
|
985 ngx_http_file_cache_node_t *fcn;
|
|
|
986
|
|
|
987 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
988 "http file cache forced expire");
|
|
|
989
|
|
|
990 path = cache->path;
|
|
|
991 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
992
|
|
|
993 name = ngx_alloc(len + 1, ngx_cycle->log);
|
|
|
994 if (name == NULL) {
|
|
478
|
995 return 10;
|
|
468
|
996 }
|
|
|
997
|
|
|
998 ngx_memcpy(name, path->name.data, path->name.len);
|
|
|
999
|
|
478
|
1000 wait = 10;
|
|
592
|
1001 tries = 20;
|
|
468
|
1002
|
|
|
1003 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1004
|
|
480
|
1005 for (q = ngx_queue_last(&cache->sh->queue);
|
|
|
1006 q != ngx_queue_sentinel(&cache->sh->queue);
|
|
468
|
1007 q = ngx_queue_prev(q))
|
|
|
1008 {
|
|
|
1009 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1010
|
|
|
1011 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1012 "http file cache forced expire: #%d %d %02xd%02xd%02xd%02xd",
|
|
|
1013 fcn->count, fcn->exists,
|
|
|
1014 fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
|
|
|
1015
|
|
592
|
1016 if (fcn->count == 0) {
|
|
|
1017 ngx_http_file_cache_delete(cache, q, name);
|
|
620
|
1018 wait = 0;
|
|
468
|
1019
|
|
592
|
1020 } else {
|
|
|
1021 if (--tries) {
|
|
468
|
1022 continue;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 wait = 1;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 break;
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1032
|
|
|
1033 ngx_free(name);
|
|
|
1034
|
|
|
1035 return wait;
|
|
|
1036 }
|
|
|
1037
|
|
|
1038
|
|
|
1039 static time_t
|
|
|
1040 ngx_http_file_cache_expire(ngx_http_file_cache_t *cache)
|
|
464
|
1041 {
|
|
|
1042 u_char *name, *p;
|
|
|
1043 size_t len;
|
|
|
1044 time_t now, wait;
|
|
|
1045 ngx_path_t *path;
|
|
|
1046 ngx_queue_t *q;
|
|
|
1047 ngx_http_file_cache_node_t *fcn;
|
|
|
1048 u_char key[2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
|
1049
|
|
|
1050 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1051 "http file cache expire");
|
|
|
1052
|
|
|
1053 path = cache->path;
|
|
|
1054 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
1055
|
|
468
|
1056 name = ngx_alloc(len + 1, ngx_cycle->log);
|
|
|
1057 if (name == NULL) {
|
|
478
|
1058 return 10;
|
|
468
|
1059 }
|
|
|
1060
|
|
|
1061 ngx_memcpy(name, path->name.data, path->name.len);
|
|
|
1062
|
|
464
|
1063 now = ngx_time();
|
|
|
1064
|
|
|
1065 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1066
|
|
|
1067 for ( ;; ) {
|
|
|
1068
|
|
480
|
1069 if (ngx_queue_empty(&cache->sh->queue)) {
|
|
478
|
1070 wait = 10;
|
|
464
|
1071 break;
|
|
|
1072 }
|
|
|
1073
|
|
480
|
1074 q = ngx_queue_last(&cache->sh->queue);
|
|
464
|
1075
|
|
|
1076 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1077
|
|
468
|
1078 wait = fcn->expire - now;
|
|
464
|
1079
|
|
468
|
1080 if (wait > 0) {
|
|
478
|
1081 wait = wait > 10 ? 10 : wait;
|
|
468
|
1082 break;
|
|
464
|
1083 }
|
|
|
1084
|
|
|
1085 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1086 "http file cache expire: #%d %d %02xd%02xd%02xd%02xd",
|
|
|
1087 fcn->count, fcn->exists,
|
|
|
1088 fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
|
|
|
1089
|
|
592
|
1090 if (fcn->count == 0) {
|
|
|
1091 ngx_http_file_cache_delete(cache, q, name);
|
|
468
|
1092 continue;
|
|
464
|
1093 }
|
|
|
1094
|
|
596
|
1095 if (fcn->deleting) {
|
|
630
|
1096 wait = 1;
|
|
|
1097 break;
|
|
596
|
1098 }
|
|
|
1099
|
|
592
|
1100 p = ngx_hex_dump(key, (u_char *) &fcn->node.key,
|
|
|
1101 sizeof(ngx_rbtree_key_t));
|
|
|
1102 len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
|
|
|
1103 (void) ngx_hex_dump(p, fcn->key, len);
|
|
464
|
1104
|
|
592
|
1105 /*
|
|
|
1106 * abnormally exited workers may leave locked cache entries,
|
|
|
1107 * and although it may be safe to remove them completely,
|
|
|
1108 * we prefer to remove them from inactive queue and rbtree
|
|
|
1109 * only, and to allow other leaks
|
|
|
1110 */
|
|
464
|
1111
|
|
592
|
1112 ngx_queue_remove(q);
|
|
|
1113 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
464
|
1114
|
|
592
|
1115 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
|
|
|
1116 "ignore long locked inactive cache entry %*s, count:%d",
|
|
|
1117 2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count);
|
|
464
|
1118 }
|
|
|
1119
|
|
|
1120 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1121
|
|
468
|
1122 ngx_free(name);
|
|
|
1123
|
|
464
|
1124 return wait;
|
|
|
1125 }
|
|
|
1126
|
|
|
1127
|
|
468
|
1128 static void
|
|
|
1129 ngx_http_file_cache_delete(ngx_http_file_cache_t *cache, ngx_queue_t *q,
|
|
|
1130 u_char *name)
|
|
|
1131 {
|
|
|
1132 u_char *p;
|
|
|
1133 size_t len;
|
|
|
1134 ngx_path_t *path;
|
|
|
1135 ngx_http_file_cache_node_t *fcn;
|
|
|
1136
|
|
|
1137 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1138
|
|
592
|
1139 if (fcn->exists) {
|
|
622
|
1140 cache->sh->size -= fcn->fs_size;
|
|
468
|
1141
|
|
592
|
1142 path = cache->path;
|
|
|
1143 p = name + path->name.len + 1 + path->len;
|
|
|
1144 p = ngx_hex_dump(p, (u_char *) &fcn->node.key,
|
|
|
1145 sizeof(ngx_rbtree_key_t));
|
|
|
1146 len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
|
|
|
1147 p = ngx_hex_dump(p, fcn->key, len);
|
|
|
1148 *p = '\0';
|
|
468
|
1149
|
|
592
|
1150 fcn->count++;
|
|
596
|
1151 fcn->deleting = 1;
|
|
592
|
1152 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
468
|
1153
|
|
592
|
1154 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
1155 ngx_create_hashed_filename(path, name, len);
|
|
468
|
1156
|
|
592
|
1157 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1158 "http file cache expire: \"%s\"", name);
|
|
468
|
1159
|
|
592
|
1160 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
|
|
|
1161 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, ngx_errno,
|
|
|
1162 ngx_delete_file_n " \"%s\" failed", name);
|
|
|
1163 }
|
|
468
|
1164
|
|
592
|
1165 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1166 fcn->count--;
|
|
596
|
1167 fcn->deleting = 0;
|
|
468
|
1168 }
|
|
|
1169
|
|
592
|
1170 if (fcn->count == 0) {
|
|
|
1171 ngx_queue_remove(q);
|
|
|
1172 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
|
1173 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
1174 }
|
|
468
|
1175 }
|
|
|
1176
|
|
|
1177
|
|
|
1178 static time_t
|
|
|
1179 ngx_http_file_cache_manager(void *data)
|
|
464
|
1180 {
|
|
|
1181 ngx_http_file_cache_t *cache = data;
|
|
|
1182
|
|
514
|
1183 off_t size;
|
|
620
|
1184 time_t next, wait;
|
|
464
|
1185
|
|
468
|
1186 next = ngx_http_file_cache_expire(cache);
|
|
|
1187
|
|
|
1188 cache->last = ngx_current_msec;
|
|
|
1189 cache->files = 0;
|
|
|
1190
|
|
|
1191 for ( ;; ) {
|
|
|
1192 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1193
|
|
480
|
1194 size = cache->sh->size;
|
|
464
|
1195
|
|
468
|
1196 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1197
|
|
470
|
1198 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1199 "http file cache size: %O", size);
|
|
|
1200
|
|
468
|
1201 if (size < cache->max_size) {
|
|
|
1202 return next;
|
|
|
1203 }
|
|
464
|
1204
|
|
620
|
1205 wait = ngx_http_file_cache_forced_expire(cache);
|
|
|
1206
|
|
|
1207 if (wait > 0) {
|
|
|
1208 return wait;
|
|
|
1209 }
|
|
468
|
1210
|
|
632
|
1211 if (ngx_quit || ngx_terminate) {
|
|
468
|
1212 return next;
|
|
|
1213 }
|
|
|
1214 }
|
|
464
|
1215 }
|
|
|
1216
|
|
|
1217
|
|
514
|
1218 static void
|
|
|
1219 ngx_http_file_cache_loader(void *data)
|
|
|
1220 {
|
|
|
1221 ngx_http_file_cache_t *cache = data;
|
|
|
1222
|
|
|
1223 ngx_tree_ctx_t tree;
|
|
|
1224
|
|
|
1225 if (!cache->sh->cold || cache->sh->loading) {
|
|
|
1226 return;
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 if (!ngx_atomic_cmp_set(&cache->sh->loading, 0, ngx_pid)) {
|
|
|
1230 return;
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1234 "http file cache loader");
|
|
|
1235
|
|
|
1236 tree.init_handler = NULL;
|
|
|
1237 tree.file_handler = ngx_http_file_cache_manage_file;
|
|
|
1238 tree.pre_tree_handler = ngx_http_file_cache_noop;
|
|
|
1239 tree.post_tree_handler = ngx_http_file_cache_noop;
|
|
|
1240 tree.spec_handler = ngx_http_file_cache_delete_file;
|
|
|
1241 tree.data = cache;
|
|
|
1242 tree.alloc = 0;
|
|
|
1243 tree.log = ngx_cycle->log;
|
|
|
1244
|
|
|
1245 cache->last = ngx_current_msec;
|
|
|
1246 cache->files = 0;
|
|
|
1247
|
|
|
1248 if (ngx_walk_tree(&tree, &cache->path->name) == NGX_ABORT) {
|
|
|
1249 cache->sh->loading = 0;
|
|
|
1250 return;
|
|
|
1251 }
|
|
|
1252
|
|
|
1253 cache->sh->cold = 0;
|
|
|
1254 cache->sh->loading = 0;
|
|
|
1255
|
|
|
1256 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
|
|
|
1257 "http file cache: %V %.3fM, bsize: %uz",
|
|
|
1258 &cache->path->name,
|
|
|
1259 ((double) cache->sh->size * cache->bsize) / (1024 * 1024),
|
|
|
1260 cache->bsize);
|
|
|
1261 }
|
|
|
1262
|
|
|
1263
|
|
464
|
1264 static ngx_int_t
|
|
632
|
1265 ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache)
|
|
468
|
1266 {
|
|
|
1267 ngx_msec_t elapsed;
|
|
|
1268
|
|
|
1269 if (cache->files++ > 100) {
|
|
|
1270
|
|
566
|
1271 ngx_time_update();
|
|
468
|
1272
|
|
|
1273 elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
|
|
|
1274
|
|
|
1275 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1276 "http file cache manager time: %M", elapsed);
|
|
|
1277
|
|
|
1278 if (elapsed > 200) {
|
|
|
1279
|
|
|
1280 /*
|
|
|
1281 * if processing 100 files takes more than 200ms,
|
|
|
1282 * it seems that many operations require disk i/o,
|
|
|
1283 * therefore sleep 200ms
|
|
|
1284 */
|
|
|
1285
|
|
|
1286 ngx_msleep(200);
|
|
|
1287
|
|
566
|
1288 ngx_time_update();
|
|
468
|
1289 }
|
|
|
1290
|
|
|
1291 cache->last = ngx_current_msec;
|
|
|
1292 cache->files = 0;
|
|
|
1293 }
|
|
|
1294
|
|
|
1295 return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298
|
|
|
1299 static ngx_int_t
|
|
|
1300 ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
464
|
1301 {
|
|
|
1302 return NGX_OK;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305
|
|
|
1306 static ngx_int_t
|
|
468
|
1307 ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
464
|
1308 {
|
|
468
|
1309 ngx_http_file_cache_t *cache;
|
|
|
1310
|
|
|
1311 cache = ctx->data;
|
|
|
1312
|
|
|
1313 if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) {
|
|
|
1314 (void) ngx_http_file_cache_delete_file(ctx, path);
|
|
|
1315 }
|
|
|
1316
|
|
632
|
1317 return ngx_http_file_cache_loader_sleep(cache);
|
|
468
|
1318 }
|
|
|
1319
|
|
464
|
1320
|
|
468
|
1321 static ngx_int_t
|
|
|
1322 ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, ngx_str_t *name)
|
|
|
1323 {
|
|
632
|
1324 u_char *p;
|
|
|
1325 ngx_int_t n;
|
|
|
1326 ngx_uint_t i;
|
|
|
1327 ngx_http_cache_t c;
|
|
|
1328 ngx_http_file_cache_t *cache;
|
|
468
|
1329
|
|
|
1330 if (name->len < 2 * NGX_HTTP_CACHE_KEY_LEN) {
|
|
|
1331 return NGX_ERROR;
|
|
464
|
1332 }
|
|
|
1333
|
|
632
|
1334 if (ctx->size < (off_t) sizeof(ngx_http_file_cache_header_t)) {
|
|
468
|
1335 ngx_log_error(NGX_LOG_CRIT, ctx->log, 0,
|
|
|
1336 "cache file \"%s\" is too small", name->data);
|
|
|
1337 return NGX_ERROR;
|
|
|
1338 }
|
|
|
1339
|
|
632
|
1340 ngx_memzero(&c, sizeof(ngx_http_cache_t));
|
|
622
|
1341 cache = ctx->data;
|
|
|
1342
|
|
632
|
1343 c.length = ctx->size;
|
|
|
1344 c.fs_size = (ctx->fs_size + cache->bsize - 1) / cache->bsize;
|
|
468
|
1345
|
|
|
1346 p = &name->data[name->len - 2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
464
|
1347
|
|
|
1348 for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) {
|
|
|
1349 n = ngx_hextoi(p, 2);
|
|
|
1350
|
|
|
1351 if (n == NGX_ERROR) {
|
|
468
|
1352 return NGX_ERROR;
|
|
464
|
1353 }
|
|
|
1354
|
|
|
1355 p += 2;
|
|
|
1356
|
|
468
|
1357 c.key[i] = (u_char) n;
|
|
464
|
1358 }
|
|
|
1359
|
|
468
|
1360 return ngx_http_file_cache_add(cache, &c);
|
|
|
1361 }
|
|
|
1362
|
|
|
1363
|
|
|
1364 static ngx_int_t
|
|
|
1365 ngx_http_file_cache_add(ngx_http_file_cache_t *cache, ngx_http_cache_t *c)
|
|
|
1366 {
|
|
|
1367 ngx_http_file_cache_node_t *fcn;
|
|
|
1368
|
|
464
|
1369 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1370
|
|
468
|
1371 fcn = ngx_http_file_cache_lookup(cache, c->key);
|
|
|
1372
|
|
|
1373 if (fcn == NULL) {
|
|
|
1374
|
|
|
1375 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
1376 sizeof(ngx_http_file_cache_node_t));
|
|
|
1377 if (fcn == NULL) {
|
|
|
1378 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1379 return NGX_ERROR;
|
|
|
1380 }
|
|
|
1381
|
|
|
1382 ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
|
|
|
1383
|
|
|
1384 ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
|
|
|
1385 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
1386
|
|
480
|
1387 ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
|
|
468
|
1388
|
|
|
1389 fcn->uses = 1;
|
|
|
1390 fcn->count = 0;
|
|
632
|
1391 fcn->valid_msec = 0;
|
|
468
|
1392 fcn->error = 0;
|
|
|
1393 fcn->exists = 1;
|
|
594
|
1394 fcn->updating = 0;
|
|
596
|
1395 fcn->deleting = 0;
|
|
632
|
1396 fcn->uniq = 0;
|
|
|
1397 fcn->valid_sec = 0;
|
|
|
1398 fcn->body_start = 0;
|
|
622
|
1399 fcn->fs_size = c->fs_size;
|
|
468
|
1400
|
|
622
|
1401 cache->sh->size += c->fs_size;
|
|
468
|
1402
|
|
|
1403 } else {
|
|
|
1404 ngx_queue_remove(&fcn->queue);
|
|
|
1405 }
|
|
|
1406
|
|
|
1407 fcn->expire = ngx_time() + cache->inactive;
|
|
|
1408
|
|
480
|
1409 ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
|
|
464
|
1410
|
|
|
1411 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1412
|
|
468
|
1413 return NGX_OK;
|
|
|
1414 }
|
|
|
1415
|
|
464
|
1416
|
|
468
|
1417 static ngx_int_t
|
|
|
1418 ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
|
1419 {
|
|
464
|
1420 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
|
|
468
|
1421 "http file cache delete: \"%s\"", path->data);
|
|
464
|
1422
|
|
|
1423 if (ngx_delete_file(path->data) == NGX_FILE_ERROR) {
|
|
|
1424 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
|
|
|
1425 ngx_delete_file_n " \"%s\" failed", path->data);
|
|
|
1426 }
|
|
26
|
1427
|
|
0
|
1428 return NGX_OK;
|
|
|
1429 }
|
|
|
1430
|
|
|
1431
|
|
464
|
1432 time_t
|
|
|
1433 ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status)
|
|
0
|
1434 {
|
|
464
|
1435 ngx_uint_t i;
|
|
|
1436 ngx_http_cache_valid_t *valid;
|
|
0
|
1437
|
|
470
|
1438 if (cache_valid == NULL) {
|
|
|
1439 return 0;
|
|
|
1440 }
|
|
|
1441
|
|
464
|
1442 valid = cache_valid->elts;
|
|
|
1443 for (i = 0; i < cache_valid->nelts; i++) {
|
|
0
|
1444
|
|
464
|
1445 if (valid[i].status == 0) {
|
|
|
1446 return valid[i].valid;
|
|
0
|
1447 }
|
|
|
1448
|
|
464
|
1449 if (valid[i].status == status) {
|
|
|
1450 return valid[i].valid;
|
|
0
|
1451 }
|
|
464
|
1452 }
|
|
0
|
1453
|
|
464
|
1454 return 0;
|
|
0
|
1455 }
|
|
|
1456
|
|
|
1457
|
|
464
|
1458 char *
|
|
|
1459 ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1460 {
|
|
468
|
1461 off_t max_size;
|
|
464
|
1462 u_char *last, *p;
|
|
468
|
1463 time_t inactive;
|
|
464
|
1464 ssize_t size;
|
|
|
1465 ngx_str_t s, name, *value;
|
|
|
1466 ngx_uint_t i, n;
|
|
|
1467 ngx_http_file_cache_t *cache;
|
|
|
1468
|
|
|
1469 cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
|
|
|
1470 if (cache == NULL) {
|
|
|
1471 return NGX_CONF_ERROR;
|
|
|
1472 }
|
|
|
1473
|
|
|
1474 cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
|
|
|
1475 if (cache->path == NULL) {
|
|
|
1476 return NGX_CONF_ERROR;
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 inactive = 600;
|
|
|
1480
|
|
|
1481 name.len = 0;
|
|
|
1482 size = 0;
|
|
468
|
1483 max_size = NGX_MAX_OFF_T_VALUE;
|
|
464
|
1484
|
|
|
1485 value = cf->args->elts;
|
|
|
1486
|
|
|
1487 cache->path->name = value[1];
|
|
|
1488
|
|
|
1489 if (cache->path->name.data[cache->path->name.len - 1] == '/') {
|
|
|
1490 cache->path->name.len--;
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
|
|
|
1494 return NGX_CONF_ERROR;
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
1498
|
|
|
1499 if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
|
|
|
1500
|
|
|
1501 p = value[i].data + 7;
|
|
|
1502 last = value[i].data + value[i].len;
|
|
|
1503
|
|
472
|
1504 for (n = 0; n < 3 && p < last; n++) {
|
|
464
|
1505
|
|
472
|
1506 if (*p > '0' && *p < '3') {
|
|
464
|
1507
|
|
|
1508 cache->path->level[n] = *p++ - '0';
|
|
|
1509 cache->path->len += cache->path->level[n] + 1;
|
|
|
1510
|
|
|
1511 if (p == last) {
|
|
|
1512 break;
|
|
|
1513 }
|
|
|
1514
|
|
472
|
1515 if (*p++ == ':' && n < 2 && p != last) {
|
|
464
|
1516 continue;
|
|
|
1517 }
|
|
472
|
1518
|
|
|
1519 goto invalid_levels;
|
|
464
|
1520 }
|
|
|
1521
|
|
|
1522 goto invalid_levels;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 if (cache->path->len < 10 + 3) {
|
|
|
1526 continue;
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 invalid_levels:
|
|
|
1530
|
|
|
1531 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1532 "invalid \"levels\" \"%V\"", &value[i]);
|
|
|
1533 return NGX_CONF_ERROR;
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
|
|
|
1537
|
|
|
1538 name.data = value[i].data + 10;
|
|
|
1539
|
|
|
1540 p = (u_char *) ngx_strchr(name.data, ':');
|
|
|
1541
|
|
|
1542 if (p) {
|
|
480
|
1543 *p = '\0';
|
|
|
1544
|
|
464
|
1545 name.len = p - name.data;
|
|
|
1546
|
|
|
1547 p++;
|
|
|
1548
|
|
|
1549 s.len = value[i].data + value[i].len - p;
|
|
|
1550 s.data = p;
|
|
|
1551
|
|
|
1552 size = ngx_parse_size(&s);
|
|
|
1553 if (size > 8191) {
|
|
|
1554 continue;
|
|
|
1555 }
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1559 "invalid keys zone size \"%V\"", &value[i]);
|
|
|
1560 return NGX_CONF_ERROR;
|
|
|
1561 }
|
|
|
1562
|
|
|
1563 if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
|
|
|
1564
|
|
|
1565 s.len = value[i].len - 9;
|
|
|
1566 s.data = value[i].data + 9;
|
|
|
1567
|
|
|
1568 inactive = ngx_parse_time(&s, 1);
|
|
|
1569 if (inactive < 0) {
|
|
|
1570 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1571 "invalid inactive value \"%V\"", &value[i]);
|
|
|
1572 return NGX_CONF_ERROR;
|
|
|
1573 }
|
|
|
1574
|
|
|
1575 continue;
|
|
|
1576 }
|
|
|
1577
|
|
468
|
1578 if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
|
|
464
|
1579
|
|
468
|
1580 s.len = value[i].len - 9;
|
|
|
1581 s.data = value[i].data + 9;
|
|
464
|
1582
|
|
468
|
1583 max_size = ngx_parse_offset(&s);
|
|
|
1584 if (max_size < 0) {
|
|
464
|
1585 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
468
|
1586 "invalid max_size value \"%V\"", &value[i]);
|
|
464
|
1587 return NGX_CONF_ERROR;
|
|
|
1588 }
|
|
|
1589
|
|
|
1590 continue;
|
|
|
1591 }
|
|
|
1592
|
|
|
1593 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1594 "invalid parameter \"%V\"", &value[i]);
|
|
|
1595 return NGX_CONF_ERROR;
|
|
|
1596 }
|
|
|
1597
|
|
|
1598 if (name.len == 0 || size == 0) {
|
|
|
1599 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1600 "\"%V\" must have \"keys_zone\" parameter",
|
|
|
1601 &cmd->name);
|
|
|
1602 return NGX_CONF_ERROR;
|
|
|
1603 }
|
|
|
1604
|
|
468
|
1605 cache->path->manager = ngx_http_file_cache_manager;
|
|
514
|
1606 cache->path->loader = ngx_http_file_cache_loader;
|
|
464
|
1607 cache->path->data = cache;
|
|
632
|
1608 cache->path->conf_file = cf->conf_file->file.name.data;
|
|
|
1609 cache->path->line = cf->conf_file->line;
|
|
464
|
1610
|
|
|
1611 if (ngx_add_path(cf, &cache->path) != NGX_OK) {
|
|
|
1612 return NGX_CONF_ERROR;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
|
|
|
1616 if (cache->shm_zone == NULL) {
|
|
|
1617 return NGX_CONF_ERROR;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 if (cache->shm_zone->data) {
|
|
|
1621 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1622 "duplicate zone \"%V\"", &name);
|
|
|
1623 return NGX_CONF_ERROR;
|
|
|
1624 }
|
|
|
1625
|
|
|
1626
|
|
|
1627 cache->shm_zone->init = ngx_http_file_cache_init;
|
|
|
1628 cache->shm_zone->data = cache;
|
|
|
1629
|
|
|
1630 cache->inactive = inactive;
|
|
468
|
1631 cache->max_size = max_size;
|
|
464
|
1632
|
|
|
1633 return NGX_CONF_OK;
|
|
|
1634 }
|
|
26
|
1635
|
|
|
1636
|
|
464
|
1637 char *
|
|
|
1638 ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1639 void *conf)
|
|
0
|
1640 {
|
|
464
|
1641 char *p = conf;
|
|
0
|
1642
|
|
464
|
1643 time_t valid;
|
|
|
1644 ngx_str_t *value;
|
|
|
1645 ngx_uint_t i, n, status;
|
|
|
1646 ngx_array_t **a;
|
|
|
1647 ngx_http_cache_valid_t *v;
|
|
|
1648 static ngx_uint_t statuses[] = { 200, 301, 302 };
|
|
26
|
1649
|
|
464
|
1650 a = (ngx_array_t **) (p + cmd->offset);
|
|
0
|
1651
|
|
464
|
1652 if (*a == NGX_CONF_UNSET_PTR) {
|
|
|
1653 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_cache_valid_t));
|
|
|
1654 if (*a == NULL) {
|
|
|
1655 return NGX_CONF_ERROR;
|
|
|
1656 }
|
|
|
1657 }
|
|
0
|
1658
|
|
464
|
1659 value = cf->args->elts;
|
|
|
1660 n = cf->args->nelts - 1;
|
|
0
|
1661
|
|
464
|
1662 valid = ngx_parse_time(&value[n], 1);
|
|
|
1663 if (valid < 0) {
|
|
|
1664 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1665 "invalid time value \"%V\"", &value[n]);
|
|
|
1666 return NGX_CONF_ERROR;
|
|
0
|
1667 }
|
|
|
1668
|
|
464
|
1669 if (n == 1) {
|
|
|
1670
|
|
|
1671 for (i = 0; i < 3; i++) {
|
|
|
1672 v = ngx_array_push(*a);
|
|
|
1673 if (v == NULL) {
|
|
|
1674 return NGX_CONF_ERROR;
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 v->status = statuses[i];
|
|
|
1678 v->valid = valid;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681 return NGX_CONF_OK;
|
|
0
|
1682 }
|
|
|
1683
|
|
464
|
1684 for (i = 1; i < n; i++) {
|
|
|
1685
|
|
|
1686 if (ngx_strcmp(value[i].data, "any") == 0) {
|
|
|
1687
|
|
|
1688 status = 0;
|
|
|
1689
|
|
|
1690 } else {
|
|
0
|
1691
|
|
464
|
1692 status = ngx_atoi(value[i].data, value[i].len);
|
|
|
1693 if (status < 100) {
|
|
|
1694 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1695 "invalid status \"%V\"", &value[i]);
|
|
|
1696 return NGX_CONF_ERROR;
|
|
|
1697 }
|
|
|
1698 }
|
|
|
1699
|
|
|
1700 v = ngx_array_push(*a);
|
|
|
1701 if (v == NULL) {
|
|
|
1702 return NGX_CONF_ERROR;
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 v->status = status;
|
|
|
1706 v->valid = valid;
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 return NGX_CONF_OK;
|
|
0
|
1710 }
|
|
572
|
1711
|
|
|
1712
|
|
|
1713 ngx_int_t
|
|
|
1714 ngx_http_cache(ngx_http_request_t *r, ngx_array_t *no_cache)
|
|
|
1715 {
|
|
|
1716 ngx_str_t val;
|
|
|
1717 ngx_uint_t i;
|
|
|
1718 ngx_http_complex_value_t *cv;
|
|
|
1719
|
|
|
1720 cv = no_cache->elts;
|
|
|
1721
|
|
|
1722 for (i = 0; i < no_cache->nelts; i++) {
|
|
|
1723 if (ngx_http_complex_value(r, &cv[i], &val) != NGX_OK) {
|
|
|
1724 return NGX_ERROR;
|
|
|
1725 }
|
|
|
1726
|
|
|
1727 if (val.len && val.data[0] != '0') {
|
|
|
1728 return NGX_DECLINED;
|
|
|
1729 }
|
|
|
1730 }
|
|
|
1731
|
|
|
1732 return NGX_OK;
|
|
|
1733 }
|
|
|
1734
|
|
|
1735
|
|
|
1736 char *
|
|
|
1737 ngx_http_no_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1738 {
|
|
|
1739 char *p = conf;
|
|
|
1740
|
|
|
1741 ngx_str_t *value;
|
|
|
1742 ngx_uint_t i;
|
|
|
1743 ngx_array_t **a;
|
|
|
1744 ngx_http_complex_value_t *cv;
|
|
|
1745 ngx_http_compile_complex_value_t ccv;
|
|
|
1746
|
|
|
1747 a = (ngx_array_t **) (p + cmd->offset);
|
|
|
1748
|
|
|
1749 if (*a == NGX_CONF_UNSET_PTR) {
|
|
|
1750 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t));
|
|
|
1751 if (*a == NULL) {
|
|
|
1752 return NGX_CONF_ERROR;
|
|
|
1753 }
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 value = cf->args->elts;
|
|
|
1757
|
|
|
1758 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1759 cv = ngx_array_push(*a);
|
|
|
1760 if (cv == NULL) {
|
|
|
1761 return NGX_CONF_ERROR;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
|
1765
|
|
|
1766 ccv.cf = cf;
|
|
|
1767 ccv.value = &value[i];
|
|
|
1768 ccv.complex_value = cv;
|
|
|
1769
|
|
|
1770 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
|
1771 return NGX_CONF_ERROR;
|
|
|
1772 }
|
|
|
1773 }
|
|
|
1774
|
|
|
1775 return NGX_CONF_OK;
|
|
|
1776 }
|
