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