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