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