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