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