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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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34 ngx_http_file_cache_manager_sleep(ngx_http_file_cache_t *cache);
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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 ngx_http_file_cache_create_key(r);
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178
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179 c = r->cache;
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180 cache = c->file_cache;
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181
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182 cln = ngx_pool_cleanup_add(r->pool, 0);
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183 if (cln == NULL) {
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184 return NGX_ERROR;
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185 }
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186
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187 if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) {
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188 return NGX_ERROR;
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189 }
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190
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191 cln->handler = ngx_http_file_cache_cleanup;
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192 cln->data = c;
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193
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194 if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
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195 return NGX_ERROR;
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196 }
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197
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198 return NGX_OK;
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199 }
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200
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201
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464
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202 void
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203 ngx_http_file_cache_create_key(ngx_http_request_t *r)
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204 {
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205 size_t len;
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206 ngx_str_t *key;
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207 ngx_uint_t i;
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208 ngx_md5_t md5;
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209 ngx_http_cache_t *c;
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210
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211 c = r->cache;
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212
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213 len = 0;
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214
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215 ngx_crc32_init(c->crc32);
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216 ngx_md5_init(&md5);
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217
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218 key = c->keys.elts;
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219 for (i = 0; i < c->keys.nelts; i++) {
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220 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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221 "http cache key: \"%V\"", &key[i]);
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222
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223 len += key[i].len;
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224
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225 ngx_crc32_update(&c->crc32, key[i].data, key[i].len);
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226 ngx_md5_update(&md5, key[i].data, key[i].len);
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227 }
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228
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229 c->header_start = sizeof(ngx_http_file_cache_header_t)
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230 + sizeof(ngx_http_file_cache_key) + len + 1;
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231
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232 ngx_crc32_final(c->crc32);
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233 ngx_md5_final(c->key, &md5);
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234 }
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235
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236
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237 ngx_int_t
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238 ngx_http_file_cache_open(ngx_http_request_t *r)
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239 {
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518
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240 ngx_int_t rc, rv;
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241 ngx_uint_t cold, test;
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242 ngx_http_cache_t *c;
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243 ngx_pool_cleanup_t *cln;
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244 ngx_open_file_info_t of;
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245 ngx_http_file_cache_t *cache;
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246 ngx_http_core_loc_conf_t *clcf;
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464
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247
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248 c = r->cache;
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518
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249
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250 if (c->buf) {
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251 return ngx_http_file_cache_read(r, c);
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252 }
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253
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464
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254 cache = c->file_cache;
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255
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256 cln = ngx_pool_cleanup_add(r->pool, 0);
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257 if (cln == NULL) {
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258 return NGX_ERROR;
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259 }
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260
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468
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261 rc = ngx_http_file_cache_exists(cache, c);
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464
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262
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498
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263 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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264 "http file cache exists: %i e:%d", rc, c->exists);
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464
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265
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266 if (rc == NGX_ERROR) {
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267 return rc;
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268 }
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269
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270 cln->handler = ngx_http_file_cache_cleanup;
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271 cln->data = c;
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272
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273 if (rc == NGX_AGAIN) {
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518
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274 return NGX_HTTP_CACHE_SCARCE;
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464
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275 }
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276
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480
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277 cold = cache->sh->cold;
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464
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278
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279 if (rc == NGX_OK) {
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280
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281 if (c->error) {
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282 return c->error;
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283 }
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284
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285 c->temp_file = 1;
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286 test = c->exists ? 1 : 0;
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287 rv = NGX_DECLINED;
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288
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289 } else { /* rc == NGX_DECLINED */
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290
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291 if (c->min_uses > 1) {
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292
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293 if (!cold) {
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518
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294 return NGX_HTTP_CACHE_SCARCE;
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0
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295 }
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296
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464
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297 test = 1;
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518
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298 rv = NGX_HTTP_CACHE_SCARCE;
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464
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299
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300 } else {
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301 c->temp_file = 1;
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302 test = cold ? 1 : 0;
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303 rv = NGX_DECLINED;
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0
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304 }
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305 }
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306
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588
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307 if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
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464
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308 return NGX_ERROR;
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309 }
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310
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311 if (!test) {
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312 return NGX_DECLINED;
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313 }
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314
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315 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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316
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317 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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0
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318
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464
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319 of.uniq = c->uniq;
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320 of.valid = clcf->open_file_cache_valid;
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321 of.min_uses = clcf->open_file_cache_min_uses;
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322 of.events = clcf->open_file_cache_events;
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323 of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
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532
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324 of.read_ahead = clcf->read_ahead;
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464
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325
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326 if (ngx_open_cached_file(clcf->open_file_cache, &c->file.name, &of, r->pool)
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327 != NGX_OK)
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328 {
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329 switch (of.err) {
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330
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331 case 0:
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332 return NGX_ERROR;
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333
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334 case NGX_ENOENT:
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335 case NGX_ENOTDIR:
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336 return rv;
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337
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338 default:
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339 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
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340 ngx_open_file_n " \"%s\" failed", c->file.name.data);
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341 return NGX_ERROR;
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342 }
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343 }
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344
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345 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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346 "http file cache fd: %d", of.fd);
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347
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348 c->file.fd = of.fd;
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466
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349 c->file.log = r->connection->log;
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518
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350 c->uniq = of.uniq;
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351 c->length = of.size;
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464
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352
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353 c->buf = ngx_create_temp_buf(r->pool, c->body_start);
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354 if (c->buf == NULL) {
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355 return NGX_ERROR;
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356 }
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357
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518
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358 return ngx_http_file_cache_read(r, c);
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359 }
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360
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361
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362 static ngx_int_t
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363 ngx_http_file_cache_read(ngx_http_request_t *r, ngx_http_cache_t *c)
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364 {
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365 time_t now;
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366 ssize_t n;
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367 ngx_int_t rc;
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368 ngx_http_file_cache_t *cache;
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369 ngx_http_file_cache_header_t *h;
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370
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542
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371 n = ngx_http_file_cache_aio_read(r, c);
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518
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372
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542
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373 if (n < 0) {
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0
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374 return n;
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375 }
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376
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554
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377 if ((size_t) n < c->header_start) {
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464
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378 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
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26
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379 "cache file \"%s\" is too small", c->file.name.data);
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0
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380 return NGX_ERROR;
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|
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381 }
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382
|
|
464
|
383 h = (ngx_http_file_cache_header_t *) c->buf->pos;
|
|
0
|
384
|
|
564
|
385 if (h->crc32 != c->crc32) {
|
|
464
|
386 ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
|
|
|
387 "cache file \"%s\" has md5 collision", c->file.name.data);
|
|
0
|
388 return NGX_DECLINED;
|
|
|
389 }
|
|
|
390
|
|
464
|
391 c->buf->last += n;
|
|
26
|
392
|
|
464
|
393 c->valid_sec = h->valid_sec;
|
|
|
394 c->last_modified = h->last_modified;
|
|
|
395 c->date = h->date;
|
|
|
396 c->valid_msec = h->valid_msec;
|
|
564
|
397 c->header_start = h->header_start;
|
|
464
|
398 c->body_start = h->body_start;
|
|
26
|
399
|
|
464
|
400 r->cached = 1;
|
|
|
401
|
|
518
|
402 cache = c->file_cache;
|
|
|
403
|
|
|
404 if (cache->sh->cold) {
|
|
464
|
405
|
|
|
406 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
26
|
407
|
|
468
|
408 if (!c->node->exists) {
|
|
|
409 c->node->uses = 1;
|
|
|
410 c->node->body_start = c->body_start;
|
|
|
411 c->node->exists = 1;
|
|
518
|
412 c->node->uniq = c->uniq;
|
|
468
|
413
|
|
480
|
414 cache->sh->size += (c->length + cache->bsize - 1) / cache->bsize;
|
|
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
|
|
|
534 if (fcn->exists) {
|
|
|
535
|
|
468
|
536 c->exists = fcn->exists;
|
|
|
537 c->body_start = fcn->body_start;
|
|
464
|
538
|
|
|
539 rc = NGX_OK;
|
|
|
540
|
|
|
541 goto done;
|
|
|
542 }
|
|
|
543
|
|
468
|
544 if (fcn->uses >= c->min_uses) {
|
|
464
|
545
|
|
468
|
546 c->exists = fcn->exists;
|
|
|
547 c->body_start = fcn->body_start;
|
|
464
|
548
|
|
|
549 rc = NGX_OK;
|
|
|
550
|
|
|
551 } else {
|
|
|
552 rc = NGX_AGAIN;
|
|
|
553 }
|
|
|
554
|
|
|
555 goto done;
|
|
|
556 }
|
|
|
557
|
|
|
558 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
559 sizeof(ngx_http_file_cache_node_t));
|
|
|
560 if (fcn == NULL) {
|
|
|
561 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
562
|
|
478
|
563 (void) ngx_http_file_cache_forced_expire(cache);
|
|
464
|
564
|
|
|
565 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
566
|
|
|
567 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
568 sizeof(ngx_http_file_cache_node_t));
|
|
|
569 if (fcn == NULL) {
|
|
|
570 rc = NGX_ERROR;
|
|
|
571 goto failed;
|
|
|
572 }
|
|
|
573 }
|
|
|
574
|
|
468
|
575 ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
|
|
464
|
576
|
|
468
|
577 ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
|
|
464
|
578 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
579
|
|
480
|
580 ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
|
|
464
|
581
|
|
592
|
582 fcn->uses = 1;
|
|
|
583 fcn->count = 1;
|
|
594
|
584 fcn->updating = 0;
|
|
596
|
585 fcn->deleting = 0;
|
|
592
|
586
|
|
464
|
587 renew:
|
|
|
588
|
|
|
589 rc = NGX_DECLINED;
|
|
|
590
|
|
|
591 fcn->valid_msec = 0;
|
|
|
592 fcn->error = 0;
|
|
|
593 fcn->exists = 0;
|
|
|
594 fcn->valid_sec = 0;
|
|
|
595 fcn->uniq = 0;
|
|
|
596 fcn->body_start = 0;
|
|
470
|
597 fcn->length = 0;
|
|
464
|
598
|
|
|
599 done:
|
|
|
600
|
|
|
601 fcn->expire = ngx_time() + cache->inactive;
|
|
|
602
|
|
480
|
603 ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
|
|
464
|
604
|
|
468
|
605 c->uniq = fcn->uniq;
|
|
|
606 c->error = fcn->error;
|
|
|
607 c->node = fcn;
|
|
464
|
608
|
|
|
609 failed:
|
|
|
610
|
|
|
611 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
612
|
|
|
613 return rc;
|
|
|
614 }
|
|
|
615
|
|
|
616
|
|
588
|
617 static ngx_int_t
|
|
|
618 ngx_http_file_cache_name(ngx_http_request_t *r, ngx_path_t *path)
|
|
|
619 {
|
|
|
620 u_char *p;
|
|
|
621 ngx_http_cache_t *c;
|
|
|
622
|
|
|
623 c = r->cache;
|
|
|
624
|
|
|
625 c->file.name.len = path->name.len + 1 + path->len
|
|
|
626 + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
627
|
|
|
628 c->file.name.data = ngx_pnalloc(r->pool, c->file.name.len + 1);
|
|
|
629 if (c->file.name.data == NULL) {
|
|
|
630 return NGX_ERROR;
|
|
|
631 }
|
|
|
632
|
|
|
633 ngx_memcpy(c->file.name.data, path->name.data, path->name.len);
|
|
|
634
|
|
|
635 p = c->file.name.data + path->name.len + 1 + path->len;
|
|
|
636 p = ngx_hex_dump(p, c->key, NGX_HTTP_CACHE_KEY_LEN);
|
|
|
637 *p = '\0';
|
|
|
638
|
|
|
639 ngx_create_hashed_filename(path, c->file.name.data, c->file.name.len);
|
|
|
640
|
|
|
641 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
642 "cache file: \"%s\"", c->file.name.data);
|
|
|
643
|
|
|
644 return NGX_OK;
|
|
|
645 }
|
|
|
646
|
|
|
647
|
|
464
|
648 static ngx_http_file_cache_node_t *
|
|
|
649 ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key)
|
|
|
650 {
|
|
|
651 ngx_int_t rc;
|
|
|
652 ngx_rbtree_key_t node_key;
|
|
|
653 ngx_rbtree_node_t *node, *sentinel;
|
|
|
654 ngx_http_file_cache_node_t *fcn;
|
|
|
655
|
|
|
656 ngx_memcpy((u_char *) &node_key, key, sizeof(ngx_rbtree_key_t));
|
|
|
657
|
|
480
|
658 node = cache->sh->rbtree.root;
|
|
|
659 sentinel = cache->sh->rbtree.sentinel;
|
|
464
|
660
|
|
|
661 while (node != sentinel) {
|
|
|
662
|
|
|
663 if (node_key < node->key) {
|
|
|
664 node = node->left;
|
|
|
665 continue;
|
|
|
666 }
|
|
|
667
|
|
|
668 if (node_key > node->key) {
|
|
|
669 node = node->right;
|
|
|
670 continue;
|
|
|
671 }
|
|
|
672
|
|
|
673 /* node_key == node->key */
|
|
|
674
|
|
|
675 do {
|
|
|
676 fcn = (ngx_http_file_cache_node_t *) node;
|
|
|
677
|
|
|
678 rc = ngx_memcmp(&key[sizeof(ngx_rbtree_key_t)], fcn->key,
|
|
|
679 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
680
|
|
|
681 if (rc == 0) {
|
|
|
682 return fcn;
|
|
|
683 }
|
|
|
684
|
|
|
685 node = (rc < 0) ? node->left : node->right;
|
|
|
686
|
|
|
687 } while (node != sentinel && node_key == node->key);
|
|
|
688
|
|
|
689 break;
|
|
|
690 }
|
|
|
691
|
|
|
692 /* not found */
|
|
|
693
|
|
|
694 return NULL;
|
|
|
695 }
|
|
|
696
|
|
|
697
|
|
|
698 static void
|
|
|
699 ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
|
|
|
700 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
|
|
|
701 {
|
|
|
702 ngx_rbtree_node_t **p;
|
|
|
703 ngx_http_file_cache_node_t *cn, *cnt;
|
|
|
704
|
|
|
705 for ( ;; ) {
|
|
|
706
|
|
|
707 if (node->key < temp->key) {
|
|
|
708
|
|
|
709 p = &temp->left;
|
|
|
710
|
|
|
711 } else if (node->key > temp->key) {
|
|
|
712
|
|
|
713 p = &temp->right;
|
|
|
714
|
|
|
715 } else { /* node->key == temp->key */
|
|
|
716
|
|
|
717 cn = (ngx_http_file_cache_node_t *) node;
|
|
|
718 cnt = (ngx_http_file_cache_node_t *) temp;
|
|
|
719
|
|
|
720 p = (ngx_memcmp(cn->key, cnt->key,
|
|
|
721 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t))
|
|
|
722 < 0)
|
|
|
723 ? &temp->left : &temp->right;
|
|
|
724 }
|
|
|
725
|
|
|
726 if (*p == sentinel) {
|
|
|
727 break;
|
|
|
728 }
|
|
|
729
|
|
|
730 temp = *p;
|
|
|
731 }
|
|
|
732
|
|
|
733 *p = node;
|
|
|
734 node->parent = temp;
|
|
|
735 node->left = sentinel;
|
|
|
736 node->right = sentinel;
|
|
|
737 ngx_rbt_red(node);
|
|
|
738 }
|
|
|
739
|
|
|
740
|
|
|
741 void
|
|
|
742 ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf)
|
|
|
743 {
|
|
|
744 ngx_http_file_cache_header_t *h = (ngx_http_file_cache_header_t *) buf;
|
|
|
745
|
|
|
746 u_char *p;
|
|
|
747 ngx_str_t *key;
|
|
|
748 ngx_uint_t i;
|
|
|
749 ngx_http_cache_t *c;
|
|
|
750
|
|
|
751 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
752 "http file cache set header");
|
|
|
753
|
|
|
754 c = r->cache;
|
|
|
755
|
|
|
756 h->valid_sec = c->valid_sec;
|
|
|
757 h->last_modified = c->last_modified;
|
|
|
758 h->date = c->date;
|
|
|
759 h->crc32 = c->crc32;
|
|
|
760 h->valid_msec = (u_short) c->valid_msec;
|
|
|
761 h->header_start = (u_short) c->header_start;
|
|
|
762 h->body_start = (u_short) c->body_start;
|
|
|
763
|
|
|
764 p = buf + sizeof(ngx_http_file_cache_header_t);
|
|
|
765
|
|
|
766 p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key));
|
|
|
767
|
|
|
768 key = c->keys.elts;
|
|
|
769 for (i = 0; i < c->keys.nelts; i++) {
|
|
|
770 p = ngx_copy(p, key[i].data, key[i].len);
|
|
|
771 }
|
|
|
772
|
|
|
773 *p = LF;
|
|
|
774 }
|
|
|
775
|
|
|
776
|
|
|
777 void
|
|
|
778 ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf)
|
|
|
779 {
|
|
536
|
780 off_t size, length;
|
|
464
|
781 ngx_int_t rc;
|
|
|
782 ngx_file_uniq_t uniq;
|
|
|
783 ngx_file_info_t fi;
|
|
|
784 ngx_http_cache_t *c;
|
|
|
785 ngx_ext_rename_file_t ext;
|
|
|
786 ngx_http_file_cache_t *cache;
|
|
|
787
|
|
|
788 c = r->cache;
|
|
|
789
|
|
|
790 if (c->updated) {
|
|
|
791 return;
|
|
|
792 }
|
|
|
793
|
|
|
794 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
795 "http file cache update");
|
|
|
796
|
|
|
797 c->updated = 1;
|
|
590
|
798 c->updating = 0;
|
|
464
|
799
|
|
|
800 cache = c->file_cache;
|
|
|
801
|
|
|
802 uniq = 0;
|
|
536
|
803 length = 0;
|
|
464
|
804
|
|
|
805 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
806 "http file cache rename: \"%s\" to \"%s\"",
|
|
|
807 tf->file.name.data, c->file.name.data);
|
|
|
808
|
|
|
809 ext.access = NGX_FILE_OWNER_ACCESS;
|
|
|
810 ext.path_access = NGX_FILE_OWNER_ACCESS;
|
|
|
811 ext.time = -1;
|
|
|
812 ext.create_path = 1;
|
|
|
813 ext.delete_file = 1;
|
|
|
814 ext.log = r->connection->log;
|
|
|
815
|
|
|
816 rc = ngx_ext_rename_file(&tf->file.name, &c->file.name, &ext);
|
|
|
817
|
|
|
818 if (rc == NGX_OK) {
|
|
|
819
|
|
|
820 if (ngx_fd_info(tf->file.fd, &fi) == NGX_FILE_ERROR) {
|
|
|
821 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
822 ngx_fd_info_n " \"%s\" failed", tf->file.name.data);
|
|
|
823
|
|
|
824 rc = NGX_ERROR;
|
|
|
825
|
|
|
826 } else {
|
|
|
827 uniq = ngx_file_uniq(&fi);
|
|
536
|
828 length = ngx_file_size(&fi);
|
|
464
|
829 }
|
|
|
830 }
|
|
|
831
|
|
536
|
832 size = (length + cache->bsize - 1) / cache->bsize;
|
|
468
|
833
|
|
464
|
834 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
835
|
|
|
836 c->node->count--;
|
|
|
837 c->node->uniq = uniq;
|
|
|
838 c->node->body_start = c->body_start;
|
|
|
839
|
|
468
|
840 size = size - (c->node->length + cache->bsize - 1) / cache->bsize;
|
|
|
841
|
|
536
|
842 c->node->length = length;
|
|
468
|
843
|
|
480
|
844 cache->sh->size += size;
|
|
468
|
845
|
|
464
|
846 if (rc == NGX_OK) {
|
|
|
847 c->node->exists = 1;
|
|
|
848 }
|
|
|
849
|
|
498
|
850 c->node->updating = 0;
|
|
|
851
|
|
464
|
852 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
853 }
|
|
|
854
|
|
|
855
|
|
|
856 ngx_int_t
|
|
|
857 ngx_http_cache_send(ngx_http_request_t *r)
|
|
|
858 {
|
|
|
859 ngx_int_t rc;
|
|
|
860 ngx_buf_t *b;
|
|
|
861 ngx_chain_t out;
|
|
|
862 ngx_http_cache_t *c;
|
|
|
863
|
|
|
864 c = r->cache;
|
|
|
865
|
|
|
866 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
867 "http file cache send: %s", c->file.name.data);
|
|
|
868
|
|
|
869 /* we need to allocate all before the header would be sent */
|
|
|
870
|
|
|
871 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
|
|
|
872 if (b == NULL) {
|
|
|
873 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
874 }
|
|
|
875
|
|
|
876 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
|
|
|
877 if (b->file == NULL) {
|
|
|
878 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
879 }
|
|
|
880
|
|
558
|
881 r->header_only = (c->length - c->body_start) == 0;
|
|
|
882
|
|
464
|
883 rc = ngx_http_send_header(r);
|
|
|
884
|
|
|
885 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
|
|
|
886 return rc;
|
|
|
887 }
|
|
|
888
|
|
|
889 b->file_pos = c->body_start;
|
|
|
890 b->file_last = c->length;
|
|
|
891
|
|
558
|
892 b->in_file = 1;
|
|
464
|
893 b->last_buf = (r == r->main) ? 1: 0;
|
|
|
894 b->last_in_chain = 1;
|
|
|
895
|
|
|
896 b->file->fd = c->file.fd;
|
|
|
897 b->file->name = c->file.name;
|
|
|
898 b->file->log = r->connection->log;
|
|
|
899
|
|
|
900 out.buf = b;
|
|
|
901 out.next = NULL;
|
|
|
902
|
|
|
903 return ngx_http_output_filter(r, &out);
|
|
|
904 }
|
|
|
905
|
|
|
906
|
|
|
907 void
|
|
590
|
908 ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf)
|
|
464
|
909 {
|
|
588
|
910 ngx_http_file_cache_t *cache;
|
|
|
911 ngx_http_file_cache_node_t *fcn;
|
|
464
|
912
|
|
|
913 if (c->updated) {
|
|
|
914 return;
|
|
|
915 }
|
|
|
916
|
|
|
917 cache = c->file_cache;
|
|
|
918
|
|
590
|
919 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
|
920 "http file cache free, fd: %d", c->file.fd);
|
|
464
|
921
|
|
|
922 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
923
|
|
588
|
924 fcn = c->node;
|
|
|
925 fcn->count--;
|
|
590
|
926
|
|
|
927 if (c->updating) {
|
|
|
928 fcn->updating = 0;
|
|
|
929 }
|
|
464
|
930
|
|
|
931 if (c->error) {
|
|
588
|
932 fcn->error = c->error;
|
|
|
933
|
|
594
|
934 if (c->valid_sec) {
|
|
|
935 fcn->valid_sec = c->valid_sec;
|
|
|
936 fcn->valid_msec = c->valid_msec;
|
|
|
937 }
|
|
|
938
|
|
592
|
939 } else if (!fcn->exists && fcn->count == 0 && c->min_uses == 1) {
|
|
588
|
940 ngx_queue_remove(&fcn->queue);
|
|
|
941 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
|
942 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
943 c->node = NULL;
|
|
464
|
944 }
|
|
|
945
|
|
|
946 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
947
|
|
590
|
948 c->updated = 1;
|
|
|
949 c->updating = 0;
|
|
|
950
|
|
464
|
951 if (c->temp_file) {
|
|
|
952 if (tf && tf->file.fd != NGX_INVALID_FILE) {
|
|
590
|
953 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
464
|
954 "http file cache incomplete: \"%s\"",
|
|
|
955 tf->file.name.data);
|
|
|
956
|
|
|
957 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
590
|
958 ngx_log_error(NGX_LOG_CRIT, c->file.log, ngx_errno,
|
|
464
|
959 ngx_delete_file_n " \"%s\" failed",
|
|
|
960 tf->file.name.data);
|
|
|
961 }
|
|
|
962 }
|
|
|
963 }
|
|
|
964 }
|
|
|
965
|
|
|
966
|
|
|
967 static void
|
|
|
968 ngx_http_file_cache_cleanup(void *data)
|
|
|
969 {
|
|
|
970 ngx_http_cache_t *c = data;
|
|
|
971
|
|
|
972 if (c->updated) {
|
|
|
973 return;
|
|
|
974 }
|
|
|
975
|
|
|
976 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
|
|
|
977 "http file cache cleanup");
|
|
|
978
|
|
590
|
979 if (c->updating) {
|
|
|
980 ngx_log_error(NGX_LOG_ALERT, c->file.log, 0,
|
|
|
981 "stalled cache updating, error:%ui", c->error);
|
|
464
|
982 }
|
|
|
983
|
|
590
|
984 ngx_http_file_cache_free(c, NULL);
|
|
464
|
985 }
|
|
|
986
|
|
|
987
|
|
|
988 static time_t
|
|
468
|
989 ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache)
|
|
|
990 {
|
|
|
991 u_char *name;
|
|
|
992 size_t len;
|
|
|
993 time_t wait;
|
|
|
994 ngx_uint_t tries;
|
|
|
995 ngx_path_t *path;
|
|
|
996 ngx_queue_t *q;
|
|
|
997 ngx_http_file_cache_node_t *fcn;
|
|
|
998
|
|
|
999 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1000 "http file cache forced expire");
|
|
|
1001
|
|
|
1002 path = cache->path;
|
|
|
1003 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
1004
|
|
|
1005 name = ngx_alloc(len + 1, ngx_cycle->log);
|
|
|
1006 if (name == NULL) {
|
|
478
|
1007 return 10;
|
|
468
|
1008 }
|
|
|
1009
|
|
|
1010 ngx_memcpy(name, path->name.data, path->name.len);
|
|
|
1011
|
|
478
|
1012 wait = 10;
|
|
592
|
1013 tries = 20;
|
|
468
|
1014
|
|
|
1015 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1016
|
|
480
|
1017 for (q = ngx_queue_last(&cache->sh->queue);
|
|
|
1018 q != ngx_queue_sentinel(&cache->sh->queue);
|
|
468
|
1019 q = ngx_queue_prev(q))
|
|
|
1020 {
|
|
|
1021 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1022
|
|
|
1023 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1024 "http file cache forced expire: #%d %d %02xd%02xd%02xd%02xd",
|
|
|
1025 fcn->count, fcn->exists,
|
|
|
1026 fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
|
|
|
1027
|
|
592
|
1028 if (fcn->count == 0) {
|
|
|
1029 ngx_http_file_cache_delete(cache, q, name);
|
|
620
|
1030 wait = 0;
|
|
468
|
1031
|
|
592
|
1032 } else {
|
|
|
1033 if (--tries) {
|
|
468
|
1034 continue;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 wait = 1;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 break;
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1044
|
|
|
1045 ngx_free(name);
|
|
|
1046
|
|
|
1047 return wait;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050
|
|
|
1051 static time_t
|
|
|
1052 ngx_http_file_cache_expire(ngx_http_file_cache_t *cache)
|
|
464
|
1053 {
|
|
|
1054 u_char *name, *p;
|
|
|
1055 size_t len;
|
|
|
1056 time_t now, wait;
|
|
|
1057 ngx_path_t *path;
|
|
|
1058 ngx_queue_t *q;
|
|
|
1059 ngx_http_file_cache_node_t *fcn;
|
|
|
1060 u_char key[2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
|
1061
|
|
|
1062 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1063 "http file cache expire");
|
|
|
1064
|
|
|
1065 path = cache->path;
|
|
|
1066 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
1067
|
|
468
|
1068 name = ngx_alloc(len + 1, ngx_cycle->log);
|
|
|
1069 if (name == NULL) {
|
|
478
|
1070 return 10;
|
|
468
|
1071 }
|
|
|
1072
|
|
|
1073 ngx_memcpy(name, path->name.data, path->name.len);
|
|
|
1074
|
|
464
|
1075 now = ngx_time();
|
|
|
1076
|
|
|
1077 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1078
|
|
|
1079 for ( ;; ) {
|
|
|
1080
|
|
480
|
1081 if (ngx_queue_empty(&cache->sh->queue)) {
|
|
478
|
1082 wait = 10;
|
|
464
|
1083 break;
|
|
|
1084 }
|
|
|
1085
|
|
480
|
1086 q = ngx_queue_last(&cache->sh->queue);
|
|
464
|
1087
|
|
|
1088 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1089
|
|
468
|
1090 wait = fcn->expire - now;
|
|
464
|
1091
|
|
468
|
1092 if (wait > 0) {
|
|
478
|
1093 wait = wait > 10 ? 10 : wait;
|
|
468
|
1094 break;
|
|
464
|
1095 }
|
|
|
1096
|
|
|
1097 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1098 "http file cache expire: #%d %d %02xd%02xd%02xd%02xd",
|
|
|
1099 fcn->count, fcn->exists,
|
|
|
1100 fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
|
|
|
1101
|
|
592
|
1102 if (fcn->count == 0) {
|
|
|
1103 ngx_http_file_cache_delete(cache, q, name);
|
|
468
|
1104 continue;
|
|
464
|
1105 }
|
|
|
1106
|
|
596
|
1107 if (fcn->deleting) {
|
|
|
1108 continue;
|
|
|
1109 }
|
|
|
1110
|
|
592
|
1111 p = ngx_hex_dump(key, (u_char *) &fcn->node.key,
|
|
|
1112 sizeof(ngx_rbtree_key_t));
|
|
|
1113 len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
|
|
|
1114 (void) ngx_hex_dump(p, fcn->key, len);
|
|
464
|
1115
|
|
592
|
1116 /*
|
|
|
1117 * abnormally exited workers may leave locked cache entries,
|
|
|
1118 * and although it may be safe to remove them completely,
|
|
|
1119 * we prefer to remove them from inactive queue and rbtree
|
|
|
1120 * only, and to allow other leaks
|
|
|
1121 */
|
|
464
|
1122
|
|
592
|
1123 ngx_queue_remove(q);
|
|
|
1124 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
464
|
1125
|
|
592
|
1126 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
|
|
|
1127 "ignore long locked inactive cache entry %*s, count:%d",
|
|
|
1128 2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count);
|
|
464
|
1129 }
|
|
|
1130
|
|
|
1131 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1132
|
|
468
|
1133 ngx_free(name);
|
|
|
1134
|
|
464
|
1135 return wait;
|
|
|
1136 }
|
|
|
1137
|
|
|
1138
|
|
468
|
1139 static void
|
|
|
1140 ngx_http_file_cache_delete(ngx_http_file_cache_t *cache, ngx_queue_t *q,
|
|
|
1141 u_char *name)
|
|
|
1142 {
|
|
|
1143 u_char *p;
|
|
|
1144 size_t len;
|
|
|
1145 ngx_path_t *path;
|
|
|
1146 ngx_http_file_cache_node_t *fcn;
|
|
|
1147
|
|
|
1148 fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
|
|
|
1149
|
|
592
|
1150 if (fcn->exists) {
|
|
|
1151 cache->sh->size -= (fcn->length + cache->bsize - 1) / cache->bsize;
|
|
468
|
1152
|
|
592
|
1153 path = cache->path;
|
|
|
1154 p = name + path->name.len + 1 + path->len;
|
|
|
1155 p = ngx_hex_dump(p, (u_char *) &fcn->node.key,
|
|
|
1156 sizeof(ngx_rbtree_key_t));
|
|
|
1157 len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
|
|
|
1158 p = ngx_hex_dump(p, fcn->key, len);
|
|
|
1159 *p = '\0';
|
|
468
|
1160
|
|
592
|
1161 fcn->count++;
|
|
596
|
1162 fcn->deleting = 1;
|
|
592
|
1163 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
468
|
1164
|
|
592
|
1165 len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
|
|
|
1166 ngx_create_hashed_filename(path, name, len);
|
|
468
|
1167
|
|
592
|
1168 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1169 "http file cache expire: \"%s\"", name);
|
|
468
|
1170
|
|
592
|
1171 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
|
|
|
1172 ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, ngx_errno,
|
|
|
1173 ngx_delete_file_n " \"%s\" failed", name);
|
|
|
1174 }
|
|
468
|
1175
|
|
592
|
1176 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1177 fcn->count--;
|
|
596
|
1178 fcn->deleting = 0;
|
|
468
|
1179 }
|
|
|
1180
|
|
592
|
1181 if (fcn->count == 0) {
|
|
|
1182 ngx_queue_remove(q);
|
|
|
1183 ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
|
|
|
1184 ngx_slab_free_locked(cache->shpool, fcn);
|
|
|
1185 }
|
|
468
|
1186 }
|
|
|
1187
|
|
|
1188
|
|
|
1189 static time_t
|
|
|
1190 ngx_http_file_cache_manager(void *data)
|
|
464
|
1191 {
|
|
|
1192 ngx_http_file_cache_t *cache = data;
|
|
|
1193
|
|
514
|
1194 off_t size;
|
|
620
|
1195 time_t next, wait;
|
|
464
|
1196
|
|
468
|
1197 next = ngx_http_file_cache_expire(cache);
|
|
|
1198
|
|
|
1199 cache->last = ngx_current_msec;
|
|
|
1200 cache->files = 0;
|
|
|
1201
|
|
|
1202 for ( ;; ) {
|
|
|
1203 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1204
|
|
480
|
1205 size = cache->sh->size;
|
|
464
|
1206
|
|
468
|
1207 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1208
|
|
470
|
1209 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1210 "http file cache size: %O", size);
|
|
|
1211
|
|
468
|
1212 if (size < cache->max_size) {
|
|
|
1213 return next;
|
|
|
1214 }
|
|
464
|
1215
|
|
620
|
1216 wait = ngx_http_file_cache_forced_expire(cache);
|
|
|
1217
|
|
|
1218 if (wait > 0) {
|
|
|
1219 return wait;
|
|
|
1220 }
|
|
468
|
1221
|
|
|
1222 if (ngx_http_file_cache_manager_sleep(cache) != NGX_OK) {
|
|
|
1223 return next;
|
|
|
1224 }
|
|
|
1225 }
|
|
464
|
1226 }
|
|
|
1227
|
|
|
1228
|
|
514
|
1229 static void
|
|
|
1230 ngx_http_file_cache_loader(void *data)
|
|
|
1231 {
|
|
|
1232 ngx_http_file_cache_t *cache = data;
|
|
|
1233
|
|
|
1234 ngx_tree_ctx_t tree;
|
|
|
1235
|
|
|
1236 if (!cache->sh->cold || cache->sh->loading) {
|
|
|
1237 return;
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 if (!ngx_atomic_cmp_set(&cache->sh->loading, 0, ngx_pid)) {
|
|
|
1241 return;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1245 "http file cache loader");
|
|
|
1246
|
|
|
1247 tree.init_handler = NULL;
|
|
|
1248 tree.file_handler = ngx_http_file_cache_manage_file;
|
|
|
1249 tree.pre_tree_handler = ngx_http_file_cache_noop;
|
|
|
1250 tree.post_tree_handler = ngx_http_file_cache_noop;
|
|
|
1251 tree.spec_handler = ngx_http_file_cache_delete_file;
|
|
|
1252 tree.data = cache;
|
|
|
1253 tree.alloc = 0;
|
|
|
1254 tree.log = ngx_cycle->log;
|
|
|
1255
|
|
|
1256 cache->last = ngx_current_msec;
|
|
|
1257 cache->files = 0;
|
|
|
1258
|
|
|
1259 if (ngx_walk_tree(&tree, &cache->path->name) == NGX_ABORT) {
|
|
|
1260 cache->sh->loading = 0;
|
|
|
1261 return;
|
|
|
1262 }
|
|
|
1263
|
|
|
1264 cache->sh->cold = 0;
|
|
|
1265 cache->sh->loading = 0;
|
|
|
1266
|
|
|
1267 ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
|
|
|
1268 "http file cache: %V %.3fM, bsize: %uz",
|
|
|
1269 &cache->path->name,
|
|
|
1270 ((double) cache->sh->size * cache->bsize) / (1024 * 1024),
|
|
|
1271 cache->bsize);
|
|
|
1272 }
|
|
|
1273
|
|
|
1274
|
|
464
|
1275 static ngx_int_t
|
|
468
|
1276 ngx_http_file_cache_manager_sleep(ngx_http_file_cache_t *cache)
|
|
|
1277 {
|
|
|
1278 ngx_msec_t elapsed;
|
|
|
1279
|
|
|
1280 if (cache->files++ > 100) {
|
|
|
1281
|
|
566
|
1282 ngx_time_update();
|
|
468
|
1283
|
|
|
1284 elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
|
|
|
1285
|
|
|
1286 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
|
|
|
1287 "http file cache manager time: %M", elapsed);
|
|
|
1288
|
|
|
1289 if (elapsed > 200) {
|
|
|
1290
|
|
|
1291 /*
|
|
|
1292 * if processing 100 files takes more than 200ms,
|
|
|
1293 * it seems that many operations require disk i/o,
|
|
|
1294 * therefore sleep 200ms
|
|
|
1295 */
|
|
|
1296
|
|
|
1297 ngx_msleep(200);
|
|
|
1298
|
|
566
|
1299 ngx_time_update();
|
|
468
|
1300 }
|
|
|
1301
|
|
|
1302 cache->last = ngx_current_msec;
|
|
|
1303 cache->files = 0;
|
|
|
1304 }
|
|
|
1305
|
|
|
1306 return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK;
|
|
|
1307 }
|
|
|
1308
|
|
|
1309
|
|
|
1310 static ngx_int_t
|
|
|
1311 ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
464
|
1312 {
|
|
|
1313 return NGX_OK;
|
|
|
1314 }
|
|
|
1315
|
|
|
1316
|
|
|
1317 static ngx_int_t
|
|
468
|
1318 ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
464
|
1319 {
|
|
468
|
1320 ngx_http_file_cache_t *cache;
|
|
|
1321
|
|
|
1322 cache = ctx->data;
|
|
|
1323
|
|
|
1324 if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) {
|
|
|
1325 (void) ngx_http_file_cache_delete_file(ctx, path);
|
|
|
1326 }
|
|
|
1327
|
|
|
1328 return ngx_http_file_cache_manager_sleep(cache);
|
|
|
1329 }
|
|
|
1330
|
|
464
|
1331
|
|
468
|
1332 static ngx_int_t
|
|
|
1333 ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, ngx_str_t *name)
|
|
|
1334 {
|
|
|
1335 u_char *p;
|
|
|
1336 ngx_fd_t fd;
|
|
|
1337 ngx_int_t n;
|
|
|
1338 ngx_uint_t i;
|
|
|
1339 ngx_file_info_t fi;
|
|
|
1340 ngx_http_cache_t c;
|
|
|
1341 ngx_http_file_cache_t *cache;
|
|
|
1342 ngx_http_file_cache_header_t h;
|
|
|
1343
|
|
|
1344 if (name->len < 2 * NGX_HTTP_CACHE_KEY_LEN) {
|
|
|
1345 return NGX_ERROR;
|
|
464
|
1346 }
|
|
|
1347
|
|
468
|
1348 ngx_memzero(&c, sizeof(ngx_http_cache_t));
|
|
|
1349
|
|
|
1350 fd = ngx_open_file(name->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
|
|
|
1351
|
|
|
1352 if (fd == NGX_INVALID_FILE) {
|
|
|
1353 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
|
|
|
1354 ngx_open_file_n " \"%s\" failed", name->data);
|
|
|
1355 return NGX_ERROR;
|
|
|
1356 }
|
|
|
1357
|
|
|
1358 c.file.fd = fd;
|
|
|
1359 c.file.name = *name;
|
|
|
1360 c.file.log = ctx->log;
|
|
|
1361
|
|
|
1362 n = ngx_read_file(&c.file, (u_char *) &h,
|
|
|
1363 sizeof(ngx_http_file_cache_header_t), 0);
|
|
|
1364 if (n == NGX_ERROR) {
|
|
|
1365 return NGX_ERROR;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 if ((size_t) n < sizeof(ngx_http_file_cache_header_t)) {
|
|
|
1369 ngx_log_error(NGX_LOG_CRIT, ctx->log, 0,
|
|
|
1370 "cache file \"%s\" is too small", name->data);
|
|
|
1371 return NGX_ERROR;
|
|
|
1372 }
|
|
|
1373
|
|
|
1374 if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) {
|
|
|
1375 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
|
|
|
1376 ngx_fd_info_n " \"%s\" failed", name->data);
|
|
|
1377
|
|
|
1378 } else {
|
|
|
1379 c.uniq = ngx_file_uniq(&fi);
|
|
|
1380 c.valid_sec = h.valid_sec;
|
|
|
1381 c.valid_msec = h.valid_msec;
|
|
|
1382 c.body_start = h.body_start;
|
|
|
1383 c.length = ngx_file_size(&fi);
|
|
|
1384 }
|
|
|
1385
|
|
|
1386 if (ngx_close_file(fd) == NGX_FILE_ERROR) {
|
|
|
1387 ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
|
|
|
1388 ngx_close_file_n " \"%s\" failed", name->data);
|
|
|
1389 }
|
|
|
1390
|
|
|
1391 if (c.body_start == 0) {
|
|
|
1392 return NGX_ERROR;
|
|
|
1393 }
|
|
|
1394
|
|
|
1395 p = &name->data[name->len - 2 * NGX_HTTP_CACHE_KEY_LEN];
|
|
464
|
1396
|
|
|
1397 for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) {
|
|
|
1398 n = ngx_hextoi(p, 2);
|
|
|
1399
|
|
|
1400 if (n == NGX_ERROR) {
|
|
468
|
1401 return NGX_ERROR;
|
|
464
|
1402 }
|
|
|
1403
|
|
|
1404 p += 2;
|
|
|
1405
|
|
468
|
1406 c.key[i] = (u_char) n;
|
|
464
|
1407 }
|
|
|
1408
|
|
|
1409 cache = ctx->data;
|
|
|
1410
|
|
468
|
1411 return ngx_http_file_cache_add(cache, &c);
|
|
|
1412 }
|
|
|
1413
|
|
|
1414
|
|
|
1415 static ngx_int_t
|
|
|
1416 ngx_http_file_cache_add(ngx_http_file_cache_t *cache, ngx_http_cache_t *c)
|
|
|
1417 {
|
|
|
1418 ngx_http_file_cache_node_t *fcn;
|
|
|
1419
|
|
464
|
1420 ngx_shmtx_lock(&cache->shpool->mutex);
|
|
|
1421
|
|
468
|
1422 fcn = ngx_http_file_cache_lookup(cache, c->key);
|
|
|
1423
|
|
|
1424 if (fcn == NULL) {
|
|
|
1425
|
|
|
1426 fcn = ngx_slab_alloc_locked(cache->shpool,
|
|
|
1427 sizeof(ngx_http_file_cache_node_t));
|
|
|
1428 if (fcn == NULL) {
|
|
|
1429 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1430 return NGX_ERROR;
|
|
|
1431 }
|
|
|
1432
|
|
|
1433 ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
|
|
|
1434
|
|
|
1435 ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
|
|
|
1436 NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
|
|
|
1437
|
|
480
|
1438 ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
|
|
468
|
1439
|
|
|
1440 fcn->uses = 1;
|
|
|
1441 fcn->count = 0;
|
|
|
1442 fcn->valid_msec = c->valid_msec;
|
|
|
1443 fcn->error = 0;
|
|
|
1444 fcn->exists = 1;
|
|
594
|
1445 fcn->updating = 0;
|
|
596
|
1446 fcn->deleting = 0;
|
|
468
|
1447 fcn->uniq = c->uniq;
|
|
|
1448 fcn->valid_sec = c->valid_sec;
|
|
|
1449 fcn->body_start = c->body_start;
|
|
|
1450 fcn->length = c->length;
|
|
|
1451
|
|
480
|
1452 cache->sh->size += (c->length + cache->bsize - 1) / cache->bsize;
|
|
468
|
1453
|
|
|
1454 } else {
|
|
|
1455 ngx_queue_remove(&fcn->queue);
|
|
|
1456 }
|
|
|
1457
|
|
|
1458 fcn->expire = ngx_time() + cache->inactive;
|
|
|
1459
|
|
480
|
1460 ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
|
|
464
|
1461
|
|
|
1462 ngx_shmtx_unlock(&cache->shpool->mutex);
|
|
|
1463
|
|
468
|
1464 return NGX_OK;
|
|
|
1465 }
|
|
|
1466
|
|
464
|
1467
|
|
468
|
1468 static ngx_int_t
|
|
|
1469 ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
|
|
|
1470 {
|
|
464
|
1471 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
|
|
468
|
1472 "http file cache delete: \"%s\"", path->data);
|
|
464
|
1473
|
|
|
1474 if (ngx_delete_file(path->data) == NGX_FILE_ERROR) {
|
|
|
1475 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
|
|
|
1476 ngx_delete_file_n " \"%s\" failed", path->data);
|
|
|
1477 }
|
|
26
|
1478
|
|
0
|
1479 return NGX_OK;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482
|
|
464
|
1483 time_t
|
|
|
1484 ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status)
|
|
0
|
1485 {
|
|
464
|
1486 ngx_uint_t i;
|
|
|
1487 ngx_http_cache_valid_t *valid;
|
|
0
|
1488
|
|
470
|
1489 if (cache_valid == NULL) {
|
|
|
1490 return 0;
|
|
|
1491 }
|
|
|
1492
|
|
464
|
1493 valid = cache_valid->elts;
|
|
|
1494 for (i = 0; i < cache_valid->nelts; i++) {
|
|
0
|
1495
|
|
464
|
1496 if (valid[i].status == 0) {
|
|
|
1497 return valid[i].valid;
|
|
0
|
1498 }
|
|
|
1499
|
|
464
|
1500 if (valid[i].status == status) {
|
|
|
1501 return valid[i].valid;
|
|
0
|
1502 }
|
|
464
|
1503 }
|
|
0
|
1504
|
|
464
|
1505 return 0;
|
|
0
|
1506 }
|
|
|
1507
|
|
|
1508
|
|
464
|
1509 char *
|
|
|
1510 ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1511 {
|
|
468
|
1512 off_t max_size;
|
|
464
|
1513 u_char *last, *p;
|
|
468
|
1514 time_t inactive;
|
|
464
|
1515 ssize_t size;
|
|
|
1516 ngx_str_t s, name, *value;
|
|
|
1517 ngx_uint_t i, n;
|
|
|
1518 ngx_http_file_cache_t *cache;
|
|
|
1519
|
|
|
1520 cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
|
|
|
1521 if (cache == NULL) {
|
|
|
1522 return NGX_CONF_ERROR;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
|
|
|
1526 if (cache->path == NULL) {
|
|
|
1527 return NGX_CONF_ERROR;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 inactive = 600;
|
|
|
1531
|
|
|
1532 name.len = 0;
|
|
|
1533 size = 0;
|
|
468
|
1534 max_size = NGX_MAX_OFF_T_VALUE;
|
|
464
|
1535
|
|
|
1536 value = cf->args->elts;
|
|
|
1537
|
|
|
1538 cache->path->name = value[1];
|
|
|
1539
|
|
|
1540 if (cache->path->name.data[cache->path->name.len - 1] == '/') {
|
|
|
1541 cache->path->name.len--;
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
|
|
|
1545 return NGX_CONF_ERROR;
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
1549
|
|
|
1550 if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
|
|
|
1551
|
|
|
1552 p = value[i].data + 7;
|
|
|
1553 last = value[i].data + value[i].len;
|
|
|
1554
|
|
472
|
1555 for (n = 0; n < 3 && p < last; n++) {
|
|
464
|
1556
|
|
472
|
1557 if (*p > '0' && *p < '3') {
|
|
464
|
1558
|
|
|
1559 cache->path->level[n] = *p++ - '0';
|
|
|
1560 cache->path->len += cache->path->level[n] + 1;
|
|
|
1561
|
|
|
1562 if (p == last) {
|
|
|
1563 break;
|
|
|
1564 }
|
|
|
1565
|
|
472
|
1566 if (*p++ == ':' && n < 2 && p != last) {
|
|
464
|
1567 continue;
|
|
|
1568 }
|
|
472
|
1569
|
|
|
1570 goto invalid_levels;
|
|
464
|
1571 }
|
|
|
1572
|
|
|
1573 goto invalid_levels;
|
|
|
1574 }
|
|
|
1575
|
|
|
1576 if (cache->path->len < 10 + 3) {
|
|
|
1577 continue;
|
|
|
1578 }
|
|
|
1579
|
|
|
1580 invalid_levels:
|
|
|
1581
|
|
|
1582 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1583 "invalid \"levels\" \"%V\"", &value[i]);
|
|
|
1584 return NGX_CONF_ERROR;
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
|
|
|
1588
|
|
|
1589 name.data = value[i].data + 10;
|
|
|
1590
|
|
|
1591 p = (u_char *) ngx_strchr(name.data, ':');
|
|
|
1592
|
|
|
1593 if (p) {
|
|
480
|
1594 *p = '\0';
|
|
|
1595
|
|
464
|
1596 name.len = p - name.data;
|
|
|
1597
|
|
|
1598 p++;
|
|
|
1599
|
|
|
1600 s.len = value[i].data + value[i].len - p;
|
|
|
1601 s.data = p;
|
|
|
1602
|
|
|
1603 size = ngx_parse_size(&s);
|
|
|
1604 if (size > 8191) {
|
|
|
1605 continue;
|
|
|
1606 }
|
|
|
1607 }
|
|
|
1608
|
|
|
1609 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1610 "invalid keys zone size \"%V\"", &value[i]);
|
|
|
1611 return NGX_CONF_ERROR;
|
|
|
1612 }
|
|
|
1613
|
|
|
1614 if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
|
|
|
1615
|
|
|
1616 s.len = value[i].len - 9;
|
|
|
1617 s.data = value[i].data + 9;
|
|
|
1618
|
|
|
1619 inactive = ngx_parse_time(&s, 1);
|
|
|
1620 if (inactive < 0) {
|
|
|
1621 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1622 "invalid inactive value \"%V\"", &value[i]);
|
|
|
1623 return NGX_CONF_ERROR;
|
|
|
1624 }
|
|
|
1625
|
|
|
1626 continue;
|
|
|
1627 }
|
|
|
1628
|
|
468
|
1629 if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
|
|
464
|
1630
|
|
468
|
1631 s.len = value[i].len - 9;
|
|
|
1632 s.data = value[i].data + 9;
|
|
464
|
1633
|
|
468
|
1634 max_size = ngx_parse_offset(&s);
|
|
|
1635 if (max_size < 0) {
|
|
464
|
1636 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
468
|
1637 "invalid max_size value \"%V\"", &value[i]);
|
|
464
|
1638 return NGX_CONF_ERROR;
|
|
|
1639 }
|
|
|
1640
|
|
|
1641 continue;
|
|
|
1642 }
|
|
|
1643
|
|
|
1644 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1645 "invalid parameter \"%V\"", &value[i]);
|
|
|
1646 return NGX_CONF_ERROR;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649 if (name.len == 0 || size == 0) {
|
|
|
1650 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1651 "\"%V\" must have \"keys_zone\" parameter",
|
|
|
1652 &cmd->name);
|
|
|
1653 return NGX_CONF_ERROR;
|
|
|
1654 }
|
|
|
1655
|
|
468
|
1656 cache->path->manager = ngx_http_file_cache_manager;
|
|
514
|
1657 cache->path->loader = ngx_http_file_cache_loader;
|
|
464
|
1658 cache->path->data = cache;
|
|
|
1659
|
|
|
1660 if (ngx_add_path(cf, &cache->path) != NGX_OK) {
|
|
|
1661 return NGX_CONF_ERROR;
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
|
|
|
1665 if (cache->shm_zone == NULL) {
|
|
|
1666 return NGX_CONF_ERROR;
|
|
|
1667 }
|
|
|
1668
|
|
|
1669 if (cache->shm_zone->data) {
|
|
|
1670 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1671 "duplicate zone \"%V\"", &name);
|
|
|
1672 return NGX_CONF_ERROR;
|
|
|
1673 }
|
|
|
1674
|
|
|
1675
|
|
|
1676 cache->shm_zone->init = ngx_http_file_cache_init;
|
|
|
1677 cache->shm_zone->data = cache;
|
|
|
1678
|
|
|
1679 cache->inactive = inactive;
|
|
468
|
1680 cache->max_size = max_size;
|
|
464
|
1681
|
|
|
1682 return NGX_CONF_OK;
|
|
|
1683 }
|
|
26
|
1684
|
|
|
1685
|
|
464
|
1686 char *
|
|
|
1687 ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1688 void *conf)
|
|
0
|
1689 {
|
|
464
|
1690 char *p = conf;
|
|
0
|
1691
|
|
464
|
1692 time_t valid;
|
|
|
1693 ngx_str_t *value;
|
|
|
1694 ngx_uint_t i, n, status;
|
|
|
1695 ngx_array_t **a;
|
|
|
1696 ngx_http_cache_valid_t *v;
|
|
|
1697 static ngx_uint_t statuses[] = { 200, 301, 302 };
|
|
26
|
1698
|
|
464
|
1699 a = (ngx_array_t **) (p + cmd->offset);
|
|
0
|
1700
|
|
464
|
1701 if (*a == NGX_CONF_UNSET_PTR) {
|
|
|
1702 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_cache_valid_t));
|
|
|
1703 if (*a == NULL) {
|
|
|
1704 return NGX_CONF_ERROR;
|
|
|
1705 }
|
|
|
1706 }
|
|
0
|
1707
|
|
464
|
1708 value = cf->args->elts;
|
|
|
1709 n = cf->args->nelts - 1;
|
|
0
|
1710
|
|
464
|
1711 valid = ngx_parse_time(&value[n], 1);
|
|
|
1712 if (valid < 0) {
|
|
|
1713 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1714 "invalid time value \"%V\"", &value[n]);
|
|
|
1715 return NGX_CONF_ERROR;
|
|
0
|
1716 }
|
|
|
1717
|
|
464
|
1718 if (n == 1) {
|
|
|
1719
|
|
|
1720 for (i = 0; i < 3; i++) {
|
|
|
1721 v = ngx_array_push(*a);
|
|
|
1722 if (v == NULL) {
|
|
|
1723 return NGX_CONF_ERROR;
|
|
|
1724 }
|
|
|
1725
|
|
|
1726 v->status = statuses[i];
|
|
|
1727 v->valid = valid;
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 return NGX_CONF_OK;
|
|
0
|
1731 }
|
|
|
1732
|
|
464
|
1733 for (i = 1; i < n; i++) {
|
|
|
1734
|
|
|
1735 if (ngx_strcmp(value[i].data, "any") == 0) {
|
|
|
1736
|
|
|
1737 status = 0;
|
|
|
1738
|
|
|
1739 } else {
|
|
0
|
1740
|
|
464
|
1741 status = ngx_atoi(value[i].data, value[i].len);
|
|
|
1742 if (status < 100) {
|
|
|
1743 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1744 "invalid status \"%V\"", &value[i]);
|
|
|
1745 return NGX_CONF_ERROR;
|
|
|
1746 }
|
|
|
1747 }
|
|
|
1748
|
|
|
1749 v = ngx_array_push(*a);
|
|
|
1750 if (v == NULL) {
|
|
|
1751 return NGX_CONF_ERROR;
|
|
|
1752 }
|
|
|
1753
|
|
|
1754 v->status = status;
|
|
|
1755 v->valid = valid;
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 return NGX_CONF_OK;
|
|
0
|
1759 }
|
|
572
|
1760
|
|
|
1761
|
|
|
1762 ngx_int_t
|
|
|
1763 ngx_http_cache(ngx_http_request_t *r, ngx_array_t *no_cache)
|
|
|
1764 {
|
|
|
1765 ngx_str_t val;
|
|
|
1766 ngx_uint_t i;
|
|
|
1767 ngx_http_complex_value_t *cv;
|
|
|
1768
|
|
|
1769 cv = no_cache->elts;
|
|
|
1770
|
|
|
1771 for (i = 0; i < no_cache->nelts; i++) {
|
|
|
1772 if (ngx_http_complex_value(r, &cv[i], &val) != NGX_OK) {
|
|
|
1773 return NGX_ERROR;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776 if (val.len && val.data[0] != '0') {
|
|
|
1777 return NGX_DECLINED;
|
|
|
1778 }
|
|
|
1779 }
|
|
|
1780
|
|
|
1781 return NGX_OK;
|
|
|
1782 }
|
|
|
1783
|
|
|
1784
|
|
|
1785 char *
|
|
|
1786 ngx_http_no_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1787 {
|
|
|
1788 char *p = conf;
|
|
|
1789
|
|
|
1790 ngx_str_t *value;
|
|
|
1791 ngx_uint_t i;
|
|
|
1792 ngx_array_t **a;
|
|
|
1793 ngx_http_complex_value_t *cv;
|
|
|
1794 ngx_http_compile_complex_value_t ccv;
|
|
|
1795
|
|
|
1796 a = (ngx_array_t **) (p + cmd->offset);
|
|
|
1797
|
|
|
1798 if (*a == NGX_CONF_UNSET_PTR) {
|
|
|
1799 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t));
|
|
|
1800 if (*a == NULL) {
|
|
|
1801 return NGX_CONF_ERROR;
|
|
|
1802 }
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 value = cf->args->elts;
|
|
|
1806
|
|
|
1807 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1808 cv = ngx_array_push(*a);
|
|
|
1809 if (cv == NULL) {
|
|
|
1810 return NGX_CONF_ERROR;
|
|
|
1811 }
|
|
|
1812
|
|
|
1813 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
|
1814
|
|
|
1815 ccv.cf = cf;
|
|
|
1816 ccv.value = &value[i];
|
|
|
1817 ccv.complex_value = cv;
|
|
|
1818
|
|
|
1819 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
|
1820 return NGX_CONF_ERROR;
|
|
|
1821 }
|
|
|
1822 }
|
|
|
1823
|
|
|
1824 return NGX_CONF_OK;
|
|
|
1825 }
|
