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