aboutsummaryrefslogtreecommitdiffstats
path: root/app/nginx/src/http/ngx_http_file_cache.c
diff options
context:
space:
mode:
Diffstat (limited to 'app/nginx/src/http/ngx_http_file_cache.c')
-rw-r--r--app/nginx/src/http/ngx_http_file_cache.c2656
1 files changed, 0 insertions, 2656 deletions
diff --git a/app/nginx/src/http/ngx_http_file_cache.c b/app/nginx/src/http/ngx_http_file_cache.c
deleted file mode 100644
index 8c75f95..0000000
--- a/app/nginx/src/http/ngx_http_file_cache.c
+++ /dev/null
@@ -1,2656 +0,0 @@
-
-/*
- * Copyright (C) Igor Sysoev
- * Copyright (C) Nginx, Inc.
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-#include <ngx_http.h>
-#include <ngx_md5.h>
-
-
-static ngx_int_t ngx_http_file_cache_lock(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-static void ngx_http_file_cache_lock_wait_handler(ngx_event_t *ev);
-static void ngx_http_file_cache_lock_wait(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-static ngx_int_t ngx_http_file_cache_read(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-static ssize_t ngx_http_file_cache_aio_read(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-#if (NGX_HAVE_FILE_AIO)
-static void ngx_http_cache_aio_event_handler(ngx_event_t *ev);
-#endif
-#if (NGX_THREADS)
-static ngx_int_t ngx_http_cache_thread_handler(ngx_thread_task_t *task,
- ngx_file_t *file);
-static void ngx_http_cache_thread_event_handler(ngx_event_t *ev);
-#endif
-static ngx_int_t ngx_http_file_cache_exists(ngx_http_file_cache_t *cache,
- ngx_http_cache_t *c);
-static ngx_int_t ngx_http_file_cache_name(ngx_http_request_t *r,
- ngx_path_t *path);
-static ngx_http_file_cache_node_t *
- ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key);
-static void ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
- ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
-static void ngx_http_file_cache_vary(ngx_http_request_t *r, u_char *vary,
- size_t len, u_char *hash);
-static void ngx_http_file_cache_vary_header(ngx_http_request_t *r,
- ngx_md5_t *md5, ngx_str_t *name);
-static ngx_int_t ngx_http_file_cache_reopen(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-static ngx_int_t ngx_http_file_cache_update_variant(ngx_http_request_t *r,
- ngx_http_cache_t *c);
-static void ngx_http_file_cache_cleanup(void *data);
-static time_t ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache);
-static time_t ngx_http_file_cache_expire(ngx_http_file_cache_t *cache);
-static void ngx_http_file_cache_delete(ngx_http_file_cache_t *cache,
- ngx_queue_t *q, u_char *name);
-static void ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache);
-static ngx_int_t ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx,
- ngx_str_t *path);
-static ngx_int_t ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx,
- ngx_str_t *path);
-static ngx_int_t ngx_http_file_cache_manage_directory(ngx_tree_ctx_t *ctx,
- ngx_str_t *path);
-static ngx_int_t ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx,
- ngx_str_t *path);
-static ngx_int_t ngx_http_file_cache_add(ngx_http_file_cache_t *cache,
- ngx_http_cache_t *c);
-static ngx_int_t ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx,
- ngx_str_t *path);
-static void ngx_http_file_cache_set_watermark(ngx_http_file_cache_t *cache);
-
-
-ngx_str_t ngx_http_cache_status[] = {
- ngx_string("MISS"),
- ngx_string("BYPASS"),
- ngx_string("EXPIRED"),
- ngx_string("STALE"),
- ngx_string("UPDATING"),
- ngx_string("REVALIDATED"),
- ngx_string("HIT")
-};
-
-
-static u_char ngx_http_file_cache_key[] = { LF, 'K', 'E', 'Y', ':', ' ' };
-
-
-static ngx_int_t
-ngx_http_file_cache_init(ngx_shm_zone_t *shm_zone, void *data)
-{
- ngx_http_file_cache_t *ocache = data;
-
- size_t len;
- ngx_uint_t n;
- ngx_http_file_cache_t *cache;
-
- cache = shm_zone->data;
-
- if (ocache) {
- if (ngx_strcmp(cache->path->name.data, ocache->path->name.data) != 0) {
- ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
- "cache \"%V\" uses the \"%V\" cache path "
- "while previously it used the \"%V\" cache path",
- &shm_zone->shm.name, &cache->path->name,
- &ocache->path->name);
-
- return NGX_ERROR;
- }
-
- for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) {
- if (cache->path->level[n] != ocache->path->level[n]) {
- ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
- "cache \"%V\" had previously different levels",
- &shm_zone->shm.name);
- return NGX_ERROR;
- }
- }
-
- cache->sh = ocache->sh;
-
- cache->shpool = ocache->shpool;
- cache->bsize = ocache->bsize;
-
- cache->max_size /= cache->bsize;
-
- if (!cache->sh->cold || cache->sh->loading) {
- cache->path->loader = NULL;
- }
-
- return NGX_OK;
- }
-
- cache->shpool = (ngx_slab_pool_t *) shm_zone->shm.addr;
-
- if (shm_zone->shm.exists) {
- cache->sh = cache->shpool->data;
- cache->bsize = ngx_fs_bsize(cache->path->name.data);
-
- return NGX_OK;
- }
-
- cache->sh = ngx_slab_alloc(cache->shpool, sizeof(ngx_http_file_cache_sh_t));
- if (cache->sh == NULL) {
- return NGX_ERROR;
- }
-
- cache->shpool->data = cache->sh;
-
- ngx_rbtree_init(&cache->sh->rbtree, &cache->sh->sentinel,
- ngx_http_file_cache_rbtree_insert_value);
-
- ngx_queue_init(&cache->sh->queue);
-
- cache->sh->cold = 1;
- cache->sh->loading = 0;
- cache->sh->size = 0;
- cache->sh->count = 0;
- cache->sh->watermark = (ngx_uint_t) -1;
-
- cache->bsize = ngx_fs_bsize(cache->path->name.data);
-
- cache->max_size /= cache->bsize;
-
- len = sizeof(" in cache keys zone \"\"") + shm_zone->shm.name.len;
-
- cache->shpool->log_ctx = ngx_slab_alloc(cache->shpool, len);
- if (cache->shpool->log_ctx == NULL) {
- return NGX_ERROR;
- }
-
- ngx_sprintf(cache->shpool->log_ctx, " in cache keys zone \"%V\"%Z",
- &shm_zone->shm.name);
-
- cache->shpool->log_nomem = 0;
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_file_cache_new(ngx_http_request_t *r)
-{
- ngx_http_cache_t *c;
-
- c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
- if (c == NULL) {
- return NGX_ERROR;
- }
-
- if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
- return NGX_ERROR;
- }
-
- r->cache = c;
- c->file.log = r->connection->log;
- c->file.fd = NGX_INVALID_FILE;
-
- return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_file_cache_create(ngx_http_request_t *r)
-{
- ngx_http_cache_t *c;
- ngx_pool_cleanup_t *cln;
- ngx_http_file_cache_t *cache;
-
- c = r->cache;
- cache = c->file_cache;
-
- cln = ngx_pool_cleanup_add(r->pool, 0);
- if (cln == NULL) {
- return NGX_ERROR;
- }
-
- cln->handler = ngx_http_file_cache_cleanup;
- cln->data = c;
-
- if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) {
- return NGX_ERROR;
- }
-
- if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
- return NGX_ERROR;
- }
-
- return NGX_OK;
-}
-
-
-void
-ngx_http_file_cache_create_key(ngx_http_request_t *r)
-{
- size_t len;
- ngx_str_t *key;
- ngx_uint_t i;
- ngx_md5_t md5;
- ngx_http_cache_t *c;
-
- c = r->cache;
-
- len = 0;
-
- ngx_crc32_init(c->crc32);
- ngx_md5_init(&md5);
-
- key = c->keys.elts;
- for (i = 0; i < c->keys.nelts; i++) {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http cache key: \"%V\"", &key[i]);
-
- len += key[i].len;
-
- ngx_crc32_update(&c->crc32, key[i].data, key[i].len);
- ngx_md5_update(&md5, key[i].data, key[i].len);
- }
-
- c->header_start = sizeof(ngx_http_file_cache_header_t)
- + sizeof(ngx_http_file_cache_key) + len + 1;
-
- ngx_crc32_final(c->crc32);
- ngx_md5_final(c->key, &md5);
-
- ngx_memcpy(c->main, c->key, NGX_HTTP_CACHE_KEY_LEN);
-}
-
-
-ngx_int_t
-ngx_http_file_cache_open(ngx_http_request_t *r)
-{
- ngx_int_t rc, rv;
- ngx_uint_t test;
- ngx_http_cache_t *c;
- ngx_pool_cleanup_t *cln;
- ngx_open_file_info_t of;
- ngx_http_file_cache_t *cache;
- ngx_http_core_loc_conf_t *clcf;
-
- c = r->cache;
-
- if (c->waiting) {
- return NGX_AGAIN;
- }
-
- if (c->reading) {
- return ngx_http_file_cache_read(r, c);
- }
-
- cache = c->file_cache;
-
- if (c->node == NULL) {
- cln = ngx_pool_cleanup_add(r->pool, 0);
- if (cln == NULL) {
- return NGX_ERROR;
- }
-
- cln->handler = ngx_http_file_cache_cleanup;
- cln->data = c;
- }
-
- rc = ngx_http_file_cache_exists(cache, c);
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache exists: %i e:%d", rc, c->exists);
-
- if (rc == NGX_ERROR) {
- return rc;
- }
-
- if (rc == NGX_AGAIN) {
- return NGX_HTTP_CACHE_SCARCE;
- }
-
- if (rc == NGX_OK) {
-
- if (c->error) {
- return c->error;
- }
-
- c->temp_file = 1;
- test = c->exists ? 1 : 0;
- rv = NGX_DECLINED;
-
- } else { /* rc == NGX_DECLINED */
-
- test = cache->sh->cold ? 1 : 0;
-
- if (c->min_uses > 1) {
-
- if (!test) {
- return NGX_HTTP_CACHE_SCARCE;
- }
-
- rv = NGX_HTTP_CACHE_SCARCE;
-
- } else {
- c->temp_file = 1;
- rv = NGX_DECLINED;
- }
- }
-
- if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
- return NGX_ERROR;
- }
-
- if (!test) {
- goto done;
- }
-
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
-
- ngx_memzero(&of, sizeof(ngx_open_file_info_t));
-
- of.uniq = c->uniq;
- of.valid = clcf->open_file_cache_valid;
- of.min_uses = clcf->open_file_cache_min_uses;
- of.events = clcf->open_file_cache_events;
- of.directio = NGX_OPEN_FILE_DIRECTIO_OFF;
- of.read_ahead = clcf->read_ahead;
-
- if (ngx_open_cached_file(clcf->open_file_cache, &c->file.name, &of, r->pool)
- != NGX_OK)
- {
- switch (of.err) {
-
- case 0:
- return NGX_ERROR;
-
- case NGX_ENOENT:
- case NGX_ENOTDIR:
- goto done;
-
- default:
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
- ngx_open_file_n " \"%s\" failed", c->file.name.data);
- return NGX_ERROR;
- }
- }
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache fd: %d", of.fd);
-
- c->file.fd = of.fd;
- c->file.log = r->connection->log;
- c->uniq = of.uniq;
- c->length = of.size;
- c->fs_size = (of.fs_size + cache->bsize - 1) / cache->bsize;
-
- c->buf = ngx_create_temp_buf(r->pool, c->body_start);
- if (c->buf == NULL) {
- return NGX_ERROR;
- }
-
- return ngx_http_file_cache_read(r, c);
-
-done:
-
- if (rv == NGX_DECLINED) {
- return ngx_http_file_cache_lock(r, c);
- }
-
- return rv;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_lock(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
- ngx_msec_t now, timer;
- ngx_http_file_cache_t *cache;
-
- if (!c->lock) {
- return NGX_DECLINED;
- }
-
- now = ngx_current_msec;
-
- cache = c->file_cache;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- timer = c->node->lock_time - now;
-
- if (!c->node->updating || (ngx_msec_int_t) timer <= 0) {
- c->node->updating = 1;
- c->node->lock_time = now + c->lock_age;
- c->updating = 1;
- c->lock_time = c->node->lock_time;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache lock u:%d wt:%M",
- c->updating, c->wait_time);
-
- if (c->updating) {
- return NGX_DECLINED;
- }
-
- if (c->lock_timeout == 0) {
- return NGX_HTTP_CACHE_SCARCE;
- }
-
- c->waiting = 1;
-
- if (c->wait_time == 0) {
- c->wait_time = now + c->lock_timeout;
-
- c->wait_event.handler = ngx_http_file_cache_lock_wait_handler;
- c->wait_event.data = r;
- c->wait_event.log = r->connection->log;
- }
-
- timer = c->wait_time - now;
-
- ngx_add_timer(&c->wait_event, (timer > 500) ? 500 : timer);
-
- r->main->blocked++;
-
- return NGX_AGAIN;
-}
-
-
-static void
-ngx_http_file_cache_lock_wait_handler(ngx_event_t *ev)
-{
- ngx_connection_t *c;
- ngx_http_request_t *r;
-
- r = ev->data;
- c = r->connection;
-
- ngx_http_set_log_request(c->log, r);
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http file cache wait: \"%V?%V\"", &r->uri, &r->args);
-
- ngx_http_file_cache_lock_wait(r, r->cache);
-
- ngx_http_run_posted_requests(c);
-}
-
-
-static void
-ngx_http_file_cache_lock_wait(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
- ngx_uint_t wait;
- ngx_msec_t now, timer;
- ngx_http_file_cache_t *cache;
-
- now = ngx_current_msec;
-
- timer = c->wait_time - now;
-
- if ((ngx_msec_int_t) timer <= 0) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "cache lock timeout");
- c->lock_timeout = 0;
- goto wakeup;
- }
-
- cache = c->file_cache;
- wait = 0;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- timer = c->node->lock_time - now;
-
- if (c->node->updating && (ngx_msec_int_t) timer > 0) {
- wait = 1;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- if (wait) {
- ngx_add_timer(&c->wait_event, (timer > 500) ? 500 : timer);
- return;
- }
-
-wakeup:
-
- c->waiting = 0;
- r->main->blocked--;
- r->write_event_handler(r);
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_read(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
- u_char *p;
- time_t now;
- ssize_t n;
- ngx_str_t *key;
- ngx_int_t rc;
- ngx_uint_t i;
- ngx_http_file_cache_t *cache;
- ngx_http_file_cache_header_t *h;
-
- n = ngx_http_file_cache_aio_read(r, c);
-
- if (n < 0) {
- return n;
- }
-
- if ((size_t) n < c->header_start) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" is too small", c->file.name.data);
- return NGX_DECLINED;
- }
-
- h = (ngx_http_file_cache_header_t *) c->buf->pos;
-
- if (h->version != NGX_HTTP_CACHE_VERSION) {
- ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
- "cache file \"%s\" version mismatch", c->file.name.data);
- return NGX_DECLINED;
- }
-
- if (h->crc32 != c->crc32 || (size_t) h->header_start != c->header_start) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" has md5 collision", c->file.name.data);
- return NGX_DECLINED;
- }
-
- p = c->buf->pos + sizeof(ngx_http_file_cache_header_t)
- + sizeof(ngx_http_file_cache_key);
-
- key = c->keys.elts;
- for (i = 0; i < c->keys.nelts; i++) {
- if (ngx_memcmp(p, key[i].data, key[i].len) != 0) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" has md5 collision",
- c->file.name.data);
- return NGX_DECLINED;
- }
-
- p += key[i].len;
- }
-
- if ((size_t) h->body_start > c->body_start) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" has too long header",
- c->file.name.data);
- return NGX_DECLINED;
- }
-
- if (h->vary_len > NGX_HTTP_CACHE_VARY_LEN) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" has incorrect vary length",
- c->file.name.data);
- return NGX_DECLINED;
- }
-
- if (h->vary_len) {
- ngx_http_file_cache_vary(r, h->vary, h->vary_len, c->variant);
-
- if (ngx_memcmp(c->variant, h->variant, NGX_HTTP_CACHE_KEY_LEN) != 0) {
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache vary mismatch");
- return ngx_http_file_cache_reopen(r, c);
- }
- }
-
- c->buf->last += n;
-
- c->valid_sec = h->valid_sec;
- c->updating_sec = h->updating_sec;
- c->error_sec = h->error_sec;
- c->last_modified = h->last_modified;
- c->date = h->date;
- c->valid_msec = h->valid_msec;
- c->body_start = h->body_start;
- c->etag.len = h->etag_len;
- c->etag.data = h->etag;
-
- r->cached = 1;
-
- cache = c->file_cache;
-
- if (cache->sh->cold) {
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- if (!c->node->exists) {
- c->node->uses = 1;
- c->node->body_start = c->body_start;
- c->node->exists = 1;
- c->node->uniq = c->uniq;
- c->node->fs_size = c->fs_size;
-
- cache->sh->size += c->fs_size;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
- }
-
- now = ngx_time();
-
- if (c->valid_sec < now) {
- c->stale_updating = c->valid_sec + c->updating_sec >= now;
- c->stale_error = c->valid_sec + c->error_sec >= now;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- if (c->node->updating) {
- rc = NGX_HTTP_CACHE_UPDATING;
-
- } else {
- c->node->updating = 1;
- c->updating = 1;
- c->lock_time = c->node->lock_time;
- rc = NGX_HTTP_CACHE_STALE;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache expired: %i %T %T",
- rc, c->valid_sec, now);
-
- return rc;
- }
-
- return NGX_OK;
-}
-
-
-static ssize_t
-ngx_http_file_cache_aio_read(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
-#if (NGX_HAVE_FILE_AIO || NGX_THREADS)
- ssize_t n;
- ngx_http_core_loc_conf_t *clcf;
-
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
-#endif
-
-#if (NGX_HAVE_FILE_AIO)
-
- if (clcf->aio == NGX_HTTP_AIO_ON && ngx_file_aio) {
- n = ngx_file_aio_read(&c->file, c->buf->pos, c->body_start, 0, r->pool);
-
- if (n != NGX_AGAIN) {
- c->reading = 0;
- return n;
- }
-
- c->reading = 1;
-
- c->file.aio->data = r;
- c->file.aio->handler = ngx_http_cache_aio_event_handler;
-
- r->main->blocked++;
- r->aio = 1;
-
- return NGX_AGAIN;
- }
-
-#endif
-
-#if (NGX_THREADS)
-
- if (clcf->aio == NGX_HTTP_AIO_THREADS) {
- c->file.thread_task = c->thread_task;
- c->file.thread_handler = ngx_http_cache_thread_handler;
- c->file.thread_ctx = r;
-
- n = ngx_thread_read(&c->file, c->buf->pos, c->body_start, 0, r->pool);
-
- c->thread_task = c->file.thread_task;
- c->reading = (n == NGX_AGAIN);
-
- return n;
- }
-
-#endif
-
- return ngx_read_file(&c->file, c->buf->pos, c->body_start, 0);
-}
-
-
-#if (NGX_HAVE_FILE_AIO)
-
-static void
-ngx_http_cache_aio_event_handler(ngx_event_t *ev)
-{
- ngx_event_aio_t *aio;
- ngx_connection_t *c;
- ngx_http_request_t *r;
-
- aio = ev->data;
- r = aio->data;
- c = r->connection;
-
- ngx_http_set_log_request(c->log, r);
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http file cache aio: \"%V?%V\"", &r->uri, &r->args);
-
- r->main->blocked--;
- r->aio = 0;
-
- r->write_event_handler(r);
-
- ngx_http_run_posted_requests(c);
-}
-
-#endif
-
-
-#if (NGX_THREADS)
-
-static ngx_int_t
-ngx_http_cache_thread_handler(ngx_thread_task_t *task, ngx_file_t *file)
-{
- ngx_str_t name;
- ngx_thread_pool_t *tp;
- ngx_http_request_t *r;
- ngx_http_core_loc_conf_t *clcf;
-
- r = file->thread_ctx;
-
- clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
- tp = clcf->thread_pool;
-
- if (tp == NULL) {
- if (ngx_http_complex_value(r, clcf->thread_pool_value, &name)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
-
- tp = ngx_thread_pool_get((ngx_cycle_t *) ngx_cycle, &name);
-
- if (tp == NULL) {
- ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
- "thread pool \"%V\" not found", &name);
- return NGX_ERROR;
- }
- }
-
- task->event.data = r;
- task->event.handler = ngx_http_cache_thread_event_handler;
-
- if (ngx_thread_task_post(tp, task) != NGX_OK) {
- return NGX_ERROR;
- }
-
- r->main->blocked++;
- r->aio = 1;
-
- return NGX_OK;
-}
-
-
-static void
-ngx_http_cache_thread_event_handler(ngx_event_t *ev)
-{
- ngx_connection_t *c;
- ngx_http_request_t *r;
-
- r = ev->data;
- c = r->connection;
-
- ngx_http_set_log_request(c->log, r);
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
- "http file cache thread: \"%V?%V\"", &r->uri, &r->args);
-
- r->main->blocked--;
- r->aio = 0;
-
- r->write_event_handler(r);
-
- ngx_http_run_posted_requests(c);
-}
-
-#endif
-
-
-static ngx_int_t
-ngx_http_file_cache_exists(ngx_http_file_cache_t *cache, ngx_http_cache_t *c)
-{
- ngx_int_t rc;
- ngx_http_file_cache_node_t *fcn;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- fcn = c->node;
-
- if (fcn == NULL) {
- fcn = ngx_http_file_cache_lookup(cache, c->key);
- }
-
- if (fcn) {
- ngx_queue_remove(&fcn->queue);
-
- if (c->node == NULL) {
- fcn->uses++;
- fcn->count++;
- }
-
- if (fcn->error) {
-
- if (fcn->valid_sec < ngx_time()) {
- goto renew;
- }
-
- rc = NGX_OK;
-
- goto done;
- }
-
- if (fcn->exists || fcn->uses >= c->min_uses) {
-
- c->exists = fcn->exists;
- if (fcn->body_start) {
- c->body_start = fcn->body_start;
- }
-
- rc = NGX_OK;
-
- goto done;
- }
-
- rc = NGX_AGAIN;
-
- goto done;
- }
-
- fcn = ngx_slab_calloc_locked(cache->shpool,
- sizeof(ngx_http_file_cache_node_t));
- if (fcn == NULL) {
- ngx_http_file_cache_set_watermark(cache);
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- (void) ngx_http_file_cache_forced_expire(cache);
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- fcn = ngx_slab_calloc_locked(cache->shpool,
- sizeof(ngx_http_file_cache_node_t));
- if (fcn == NULL) {
- ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
- "could not allocate node%s", cache->shpool->log_ctx);
- rc = NGX_ERROR;
- goto failed;
- }
- }
-
- cache->sh->count++;
-
- ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
-
- ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
- NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
-
- ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
-
- fcn->uses = 1;
- fcn->count = 1;
-
-renew:
-
- rc = NGX_DECLINED;
-
- fcn->valid_msec = 0;
- fcn->error = 0;
- fcn->exists = 0;
- fcn->valid_sec = 0;
- fcn->uniq = 0;
- fcn->body_start = 0;
- fcn->fs_size = 0;
-
-done:
-
- fcn->expire = ngx_time() + cache->inactive;
-
- ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
-
- c->uniq = fcn->uniq;
- c->error = fcn->error;
- c->node = fcn;
-
-failed:
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- return rc;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_name(ngx_http_request_t *r, ngx_path_t *path)
-{
- u_char *p;
- ngx_http_cache_t *c;
-
- c = r->cache;
-
- if (c->file.name.len) {
- return NGX_OK;
- }
-
- c->file.name.len = path->name.len + 1 + path->len
- + 2 * NGX_HTTP_CACHE_KEY_LEN;
-
- c->file.name.data = ngx_pnalloc(r->pool, c->file.name.len + 1);
- if (c->file.name.data == NULL) {
- return NGX_ERROR;
- }
-
- ngx_memcpy(c->file.name.data, path->name.data, path->name.len);
-
- p = c->file.name.data + path->name.len + 1 + path->len;
- p = ngx_hex_dump(p, c->key, NGX_HTTP_CACHE_KEY_LEN);
- *p = '\0';
-
- ngx_create_hashed_filename(path, c->file.name.data, c->file.name.len);
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "cache file: \"%s\"", c->file.name.data);
-
- return NGX_OK;
-}
-
-
-static ngx_http_file_cache_node_t *
-ngx_http_file_cache_lookup(ngx_http_file_cache_t *cache, u_char *key)
-{
- ngx_int_t rc;
- ngx_rbtree_key_t node_key;
- ngx_rbtree_node_t *node, *sentinel;
- ngx_http_file_cache_node_t *fcn;
-
- ngx_memcpy((u_char *) &node_key, key, sizeof(ngx_rbtree_key_t));
-
- node = cache->sh->rbtree.root;
- sentinel = cache->sh->rbtree.sentinel;
-
- while (node != sentinel) {
-
- if (node_key < node->key) {
- node = node->left;
- continue;
- }
-
- if (node_key > node->key) {
- node = node->right;
- continue;
- }
-
- /* node_key == node->key */
-
- fcn = (ngx_http_file_cache_node_t *) node;
-
- rc = ngx_memcmp(&key[sizeof(ngx_rbtree_key_t)], fcn->key,
- NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
-
- if (rc == 0) {
- return fcn;
- }
-
- node = (rc < 0) ? node->left : node->right;
- }
-
- /* not found */
-
- return NULL;
-}
-
-
-static void
-ngx_http_file_cache_rbtree_insert_value(ngx_rbtree_node_t *temp,
- ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel)
-{
- ngx_rbtree_node_t **p;
- ngx_http_file_cache_node_t *cn, *cnt;
-
- for ( ;; ) {
-
- if (node->key < temp->key) {
-
- p = &temp->left;
-
- } else if (node->key > temp->key) {
-
- p = &temp->right;
-
- } else { /* node->key == temp->key */
-
- cn = (ngx_http_file_cache_node_t *) node;
- cnt = (ngx_http_file_cache_node_t *) temp;
-
- p = (ngx_memcmp(cn->key, cnt->key,
- NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t))
- < 0)
- ? &temp->left : &temp->right;
- }
-
- if (*p == sentinel) {
- break;
- }
-
- temp = *p;
- }
-
- *p = node;
- node->parent = temp;
- node->left = sentinel;
- node->right = sentinel;
- ngx_rbt_red(node);
-}
-
-
-static void
-ngx_http_file_cache_vary(ngx_http_request_t *r, u_char *vary, size_t len,
- u_char *hash)
-{
- u_char *p, *last;
- ngx_str_t name;
- ngx_md5_t md5;
- u_char buf[NGX_HTTP_CACHE_VARY_LEN];
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache vary: \"%*s\"", len, vary);
-
- ngx_md5_init(&md5);
- ngx_md5_update(&md5, r->cache->main, NGX_HTTP_CACHE_KEY_LEN);
-
- ngx_strlow(buf, vary, len);
-
- p = buf;
- last = buf + len;
-
- while (p < last) {
-
- while (p < last && (*p == ' ' || *p == ',')) { p++; }
-
- name.data = p;
-
- while (p < last && *p != ',' && *p != ' ') { p++; }
-
- name.len = p - name.data;
-
- if (name.len == 0) {
- break;
- }
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache vary: %V", &name);
-
- ngx_md5_update(&md5, name.data, name.len);
- ngx_md5_update(&md5, (u_char *) ":", sizeof(":") - 1);
-
- ngx_http_file_cache_vary_header(r, &md5, &name);
-
- ngx_md5_update(&md5, (u_char *) CRLF, sizeof(CRLF) - 1);
- }
-
- ngx_md5_final(hash, &md5);
-}
-
-
-static void
-ngx_http_file_cache_vary_header(ngx_http_request_t *r, ngx_md5_t *md5,
- ngx_str_t *name)
-{
- size_t len;
- u_char *p, *start, *last;
- ngx_uint_t i, multiple, normalize;
- ngx_list_part_t *part;
- ngx_table_elt_t *header;
-
- multiple = 0;
- normalize = 0;
-
- if (name->len == sizeof("Accept-Charset") - 1
- && ngx_strncasecmp(name->data, (u_char *) "Accept-Charset",
- sizeof("Accept-Charset") - 1) == 0)
- {
- normalize = 1;
-
- } else if (name->len == sizeof("Accept-Encoding") - 1
- && ngx_strncasecmp(name->data, (u_char *) "Accept-Encoding",
- sizeof("Accept-Encoding") - 1) == 0)
- {
- normalize = 1;
-
- } else if (name->len == sizeof("Accept-Language") - 1
- && ngx_strncasecmp(name->data, (u_char *) "Accept-Language",
- sizeof("Accept-Language") - 1) == 0)
- {
- normalize = 1;
- }
-
- part = &r->headers_in.headers.part;
- header = part->elts;
-
- for (i = 0; /* void */ ; i++) {
-
- if (i >= part->nelts) {
- if (part->next == NULL) {
- break;
- }
-
- part = part->next;
- header = part->elts;
- i = 0;
- }
-
- if (header[i].hash == 0) {
- continue;
- }
-
- if (header[i].key.len != name->len) {
- continue;
- }
-
- if (ngx_strncasecmp(header[i].key.data, name->data, name->len) != 0) {
- continue;
- }
-
- if (!normalize) {
-
- if (multiple) {
- ngx_md5_update(md5, (u_char *) ",", sizeof(",") - 1);
- }
-
- ngx_md5_update(md5, header[i].value.data, header[i].value.len);
-
- multiple = 1;
-
- continue;
- }
-
- /* normalize spaces */
-
- p = header[i].value.data;
- last = p + header[i].value.len;
-
- while (p < last) {
-
- while (p < last && (*p == ' ' || *p == ',')) { p++; }
-
- start = p;
-
- while (p < last && *p != ',' && *p != ' ') { p++; }
-
- len = p - start;
-
- if (len == 0) {
- break;
- }
-
- if (multiple) {
- ngx_md5_update(md5, (u_char *) ",", sizeof(",") - 1);
- }
-
- ngx_md5_update(md5, start, len);
-
- multiple = 1;
- }
- }
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_reopen(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
- ngx_http_file_cache_t *cache;
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
- "http file cache reopen");
-
- if (c->secondary) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- "cache file \"%s\" has incorrect vary hash",
- c->file.name.data);
- return NGX_DECLINED;
- }
-
- cache = c->file_cache;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- c->node->count--;
- c->node = NULL;
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- c->secondary = 1;
- c->file.name.len = 0;
- c->body_start = c->buf->end - c->buf->start;
-
- ngx_memcpy(c->key, c->variant, NGX_HTTP_CACHE_KEY_LEN);
-
- return ngx_http_file_cache_open(r);
-}
-
-
-ngx_int_t
-ngx_http_file_cache_set_header(ngx_http_request_t *r, u_char *buf)
-{
- ngx_http_file_cache_header_t *h = (ngx_http_file_cache_header_t *) buf;
-
- u_char *p;
- ngx_str_t *key;
- ngx_uint_t i;
- ngx_http_cache_t *c;
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache set header");
-
- c = r->cache;
-
- ngx_memzero(h, sizeof(ngx_http_file_cache_header_t));
-
- h->version = NGX_HTTP_CACHE_VERSION;
- h->valid_sec = c->valid_sec;
- h->updating_sec = c->updating_sec;
- h->error_sec = c->error_sec;
- h->last_modified = c->last_modified;
- h->date = c->date;
- h->crc32 = c->crc32;
- h->valid_msec = (u_short) c->valid_msec;
- h->header_start = (u_short) c->header_start;
- h->body_start = (u_short) c->body_start;
-
- if (c->etag.len <= NGX_HTTP_CACHE_ETAG_LEN) {
- h->etag_len = (u_char) c->etag.len;
- ngx_memcpy(h->etag, c->etag.data, c->etag.len);
- }
-
- if (c->vary.len) {
- if (c->vary.len > NGX_HTTP_CACHE_VARY_LEN) {
- /* should not happen */
- c->vary.len = NGX_HTTP_CACHE_VARY_LEN;
- }
-
- h->vary_len = (u_char) c->vary.len;
- ngx_memcpy(h->vary, c->vary.data, c->vary.len);
-
- ngx_http_file_cache_vary(r, c->vary.data, c->vary.len, c->variant);
- ngx_memcpy(h->variant, c->variant, NGX_HTTP_CACHE_KEY_LEN);
- }
-
- if (ngx_http_file_cache_update_variant(r, c) != NGX_OK) {
- return NGX_ERROR;
- }
-
- p = buf + sizeof(ngx_http_file_cache_header_t);
-
- p = ngx_cpymem(p, ngx_http_file_cache_key, sizeof(ngx_http_file_cache_key));
-
- key = c->keys.elts;
- for (i = 0; i < c->keys.nelts; i++) {
- p = ngx_copy(p, key[i].data, key[i].len);
- }
-
- *p = LF;
-
- return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_update_variant(ngx_http_request_t *r, ngx_http_cache_t *c)
-{
- ngx_http_file_cache_t *cache;
-
- if (!c->secondary) {
- return NGX_OK;
- }
-
- if (c->vary.len
- && ngx_memcmp(c->variant, c->key, NGX_HTTP_CACHE_KEY_LEN) == 0)
- {
- return NGX_OK;
- }
-
- /*
- * if the variant hash doesn't match one we used as a secondary
- * cache key, switch back to the original key
- */
-
- cache = c->file_cache;
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache main key");
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- c->node->count--;
- c->node->updating = 0;
- c->node = NULL;
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- c->file.name.len = 0;
-
- ngx_memcpy(c->key, c->main, NGX_HTTP_CACHE_KEY_LEN);
-
- if (ngx_http_file_cache_exists(cache, c) == NGX_ERROR) {
- return NGX_ERROR;
- }
-
- if (ngx_http_file_cache_name(r, cache->path) != NGX_OK) {
- return NGX_ERROR;
- }
-
- return NGX_OK;
-}
-
-
-void
-ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf)
-{
- off_t fs_size;
- ngx_int_t rc;
- ngx_file_uniq_t uniq;
- ngx_file_info_t fi;
- ngx_http_cache_t *c;
- ngx_ext_rename_file_t ext;
- ngx_http_file_cache_t *cache;
-
- c = r->cache;
-
- if (c->updated) {
- return;
- }
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache update");
-
- cache = c->file_cache;
-
- c->updated = 1;
- c->updating = 0;
-
- uniq = 0;
- fs_size = 0;
-
- ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache rename: \"%s\" to \"%s\"",
- tf->file.name.data, c->file.name.data);
-
- ext.access = NGX_FILE_OWNER_ACCESS;
- ext.path_access = NGX_FILE_OWNER_ACCESS;
- ext.time = -1;
- ext.create_path = 1;
- ext.delete_file = 1;
- ext.log = r->connection->log;
-
- rc = ngx_ext_rename_file(&tf->file.name, &c->file.name, &ext);
-
- if (rc == NGX_OK) {
-
- if (ngx_fd_info(tf->file.fd, &fi) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
- ngx_fd_info_n " \"%s\" failed", tf->file.name.data);
-
- rc = NGX_ERROR;
-
- } else {
- uniq = ngx_file_uniq(&fi);
- fs_size = (ngx_file_fs_size(&fi) + cache->bsize - 1) / cache->bsize;
- }
- }
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- c->node->count--;
- c->node->error = 0;
- c->node->uniq = uniq;
- c->node->body_start = c->body_start;
-
- cache->sh->size += fs_size - c->node->fs_size;
- c->node->fs_size = fs_size;
-
- if (rc == NGX_OK) {
- c->node->exists = 1;
- }
-
- c->node->updating = 0;
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-}
-
-
-void
-ngx_http_file_cache_update_header(ngx_http_request_t *r)
-{
- ssize_t n;
- ngx_err_t err;
- ngx_file_t file;
- ngx_file_info_t fi;
- ngx_http_cache_t *c;
- ngx_http_file_cache_header_t h;
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache update header");
-
- c = r->cache;
-
- ngx_memzero(&file, sizeof(ngx_file_t));
-
- file.name = c->file.name;
- file.log = r->connection->log;
- file.fd = ngx_open_file(file.name.data, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
-
- if (file.fd == NGX_INVALID_FILE) {
- err = ngx_errno;
-
- /* cache file may have been deleted */
-
- if (err == NGX_ENOENT) {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache \"%s\" not found",
- file.name.data);
- return;
- }
-
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
- ngx_open_file_n " \"%s\" failed", file.name.data);
- return;
- }
-
- /*
- * make sure cache file wasn't replaced;
- * if it was, do nothing
- */
-
- if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
- ngx_fd_info_n " \"%s\" failed", file.name.data);
- goto done;
- }
-
- if (c->uniq != ngx_file_uniq(&fi)
- || c->length != ngx_file_size(&fi))
- {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache \"%s\" changed",
- file.name.data);
- goto done;
- }
-
- n = ngx_read_file(&file, (u_char *) &h,
- sizeof(ngx_http_file_cache_header_t), 0);
-
- if (n == NGX_ERROR) {
- goto done;
- }
-
- if ((size_t) n != sizeof(ngx_http_file_cache_header_t)) {
- ngx_log_error(NGX_LOG_CRIT, r->connection->log, 0,
- ngx_read_file_n " read only %z of %z from \"%s\"",
- n, sizeof(ngx_http_file_cache_header_t), file.name.data);
- goto done;
- }
-
- if (h.version != NGX_HTTP_CACHE_VERSION
- || h.last_modified != c->last_modified
- || h.crc32 != c->crc32
- || (size_t) h.header_start != c->header_start
- || (size_t) h.body_start != c->body_start)
- {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache \"%s\" content changed",
- file.name.data);
- goto done;
- }
-
- /*
- * update cache file header with new data,
- * notably h.valid_sec and h.date
- */
-
- ngx_memzero(&h, sizeof(ngx_http_file_cache_header_t));
-
- h.version = NGX_HTTP_CACHE_VERSION;
- h.valid_sec = c->valid_sec;
- h.updating_sec = c->updating_sec;
- h.error_sec = c->error_sec;
- h.last_modified = c->last_modified;
- h.date = c->date;
- h.crc32 = c->crc32;
- h.valid_msec = (u_short) c->valid_msec;
- h.header_start = (u_short) c->header_start;
- h.body_start = (u_short) c->body_start;
-
- if (c->etag.len <= NGX_HTTP_CACHE_ETAG_LEN) {
- h.etag_len = (u_char) c->etag.len;
- ngx_memcpy(h.etag, c->etag.data, c->etag.len);
- }
-
- if (c->vary.len) {
- if (c->vary.len > NGX_HTTP_CACHE_VARY_LEN) {
- /* should not happen */
- c->vary.len = NGX_HTTP_CACHE_VARY_LEN;
- }
-
- h.vary_len = (u_char) c->vary.len;
- ngx_memcpy(h.vary, c->vary.data, c->vary.len);
-
- ngx_http_file_cache_vary(r, c->vary.data, c->vary.len, c->variant);
- ngx_memcpy(h.variant, c->variant, NGX_HTTP_CACHE_KEY_LEN);
- }
-
- (void) ngx_write_file(&file, (u_char *) &h,
- sizeof(ngx_http_file_cache_header_t), 0);
-
-done:
-
- if (ngx_close_file(file.fd) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
- ngx_close_file_n " \"%s\" failed", file.name.data);
- }
-}
-
-
-ngx_int_t
-ngx_http_cache_send(ngx_http_request_t *r)
-{
- ngx_int_t rc;
- ngx_buf_t *b;
- ngx_chain_t out;
- ngx_http_cache_t *c;
-
- c = r->cache;
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
- "http file cache send: %s", c->file.name.data);
-
- if (r != r->main && c->length - c->body_start == 0) {
- return ngx_http_send_header(r);
- }
-
- /* we need to allocate all before the header would be sent */
-
- b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
- if (b == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
-
- b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
- if (b->file == NULL) {
- return NGX_HTTP_INTERNAL_SERVER_ERROR;
- }
-
- rc = ngx_http_send_header(r);
-
- if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
- return rc;
- }
-
- b->file_pos = c->body_start;
- b->file_last = c->length;
-
- b->in_file = (c->length - c->body_start) ? 1: 0;
- b->last_buf = (r == r->main) ? 1: 0;
- b->last_in_chain = 1;
-
- b->file->fd = c->file.fd;
- b->file->name = c->file.name;
- b->file->log = r->connection->log;
-
- out.buf = b;
- out.next = NULL;
-
- return ngx_http_output_filter(r, &out);
-}
-
-
-void
-ngx_http_file_cache_free(ngx_http_cache_t *c, ngx_temp_file_t *tf)
-{
- ngx_http_file_cache_t *cache;
- ngx_http_file_cache_node_t *fcn;
-
- if (c->updated || c->node == NULL) {
- return;
- }
-
- cache = c->file_cache;
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
- "http file cache free, fd: %d", c->file.fd);
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- fcn = c->node;
- fcn->count--;
-
- if (c->updating && fcn->lock_time == c->lock_time) {
- fcn->updating = 0;
- }
-
- if (c->error) {
- fcn->error = c->error;
-
- if (c->valid_sec) {
- fcn->valid_sec = c->valid_sec;
- fcn->valid_msec = c->valid_msec;
- }
-
- } else if (!fcn->exists && fcn->count == 0 && c->min_uses == 1) {
- ngx_queue_remove(&fcn->queue);
- ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
- ngx_slab_free_locked(cache->shpool, fcn);
- cache->sh->count--;
- c->node = NULL;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- c->updated = 1;
- c->updating = 0;
-
- if (c->temp_file) {
- if (tf && tf->file.fd != NGX_INVALID_FILE) {
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
- "http file cache incomplete: \"%s\"",
- tf->file.name.data);
-
- if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_CRIT, c->file.log, ngx_errno,
- ngx_delete_file_n " \"%s\" failed",
- tf->file.name.data);
- }
- }
- }
-
- if (c->wait_event.timer_set) {
- ngx_del_timer(&c->wait_event);
- }
-}
-
-
-static void
-ngx_http_file_cache_cleanup(void *data)
-{
- ngx_http_cache_t *c = data;
-
- if (c->updated) {
- return;
- }
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->file.log, 0,
- "http file cache cleanup");
-
- if (c->updating && !c->background) {
- ngx_log_error(NGX_LOG_ALERT, c->file.log, 0,
- "stalled cache updating, error:%ui", c->error);
- }
-
- ngx_http_file_cache_free(c, NULL);
-}
-
-
-static time_t
-ngx_http_file_cache_forced_expire(ngx_http_file_cache_t *cache)
-{
- u_char *name;
- size_t len;
- time_t wait;
- ngx_uint_t tries;
- ngx_path_t *path;
- ngx_queue_t *q;
- ngx_http_file_cache_node_t *fcn;
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache forced expire");
-
- path = cache->path;
- len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
-
- name = ngx_alloc(len + 1, ngx_cycle->log);
- if (name == NULL) {
- return 10;
- }
-
- ngx_memcpy(name, path->name.data, path->name.len);
-
- wait = 10;
- tries = 20;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- for (q = ngx_queue_last(&cache->sh->queue);
- q != ngx_queue_sentinel(&cache->sh->queue);
- q = ngx_queue_prev(q))
- {
- fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
-
- ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache forced expire: #%d %d %02xd%02xd%02xd%02xd",
- fcn->count, fcn->exists,
- fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
-
- if (fcn->count == 0) {
- ngx_http_file_cache_delete(cache, q, name);
- wait = 0;
-
- } else {
- if (--tries) {
- continue;
- }
-
- wait = 1;
- }
-
- break;
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- ngx_free(name);
-
- return wait;
-}
-
-
-static time_t
-ngx_http_file_cache_expire(ngx_http_file_cache_t *cache)
-{
- u_char *name, *p;
- size_t len;
- time_t now, wait;
- ngx_path_t *path;
- ngx_msec_t elapsed;
- ngx_queue_t *q;
- ngx_http_file_cache_node_t *fcn;
- u_char key[2 * NGX_HTTP_CACHE_KEY_LEN];
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache expire");
-
- path = cache->path;
- len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
-
- name = ngx_alloc(len + 1, ngx_cycle->log);
- if (name == NULL) {
- return 10;
- }
-
- ngx_memcpy(name, path->name.data, path->name.len);
-
- now = ngx_time();
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- for ( ;; ) {
-
- if (ngx_quit || ngx_terminate) {
- wait = 1;
- break;
- }
-
- if (ngx_queue_empty(&cache->sh->queue)) {
- wait = 10;
- break;
- }
-
- q = ngx_queue_last(&cache->sh->queue);
-
- fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
-
- wait = fcn->expire - now;
-
- if (wait > 0) {
- wait = wait > 10 ? 10 : wait;
- break;
- }
-
- ngx_log_debug6(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache expire: #%d %d %02xd%02xd%02xd%02xd",
- fcn->count, fcn->exists,
- fcn->key[0], fcn->key[1], fcn->key[2], fcn->key[3]);
-
- if (fcn->count == 0) {
- ngx_http_file_cache_delete(cache, q, name);
- goto next;
- }
-
- if (fcn->deleting) {
- wait = 1;
- break;
- }
-
- p = ngx_hex_dump(key, (u_char *) &fcn->node.key,
- sizeof(ngx_rbtree_key_t));
- len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
- (void) ngx_hex_dump(p, fcn->key, len);
-
- /*
- * abnormally exited workers may leave locked cache entries,
- * and although it may be safe to remove them completely,
- * we prefer to just move them to the top of the inactive queue
- */
-
- ngx_queue_remove(q);
- fcn->expire = ngx_time() + cache->inactive;
- ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
-
- ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
- "ignore long locked inactive cache entry %*s, count:%d",
- (size_t) 2 * NGX_HTTP_CACHE_KEY_LEN, key, fcn->count);
-
-next:
-
- if (++cache->files >= cache->manager_files) {
- wait = 0;
- break;
- }
-
- ngx_time_update();
-
- elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
-
- if (elapsed >= cache->manager_threshold) {
- wait = 0;
- break;
- }
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- ngx_free(name);
-
- return wait;
-}
-
-
-static void
-ngx_http_file_cache_delete(ngx_http_file_cache_t *cache, ngx_queue_t *q,
- u_char *name)
-{
- u_char *p;
- size_t len;
- ngx_path_t *path;
- ngx_http_file_cache_node_t *fcn;
-
- fcn = ngx_queue_data(q, ngx_http_file_cache_node_t, queue);
-
- if (fcn->exists) {
- cache->sh->size -= fcn->fs_size;
-
- path = cache->path;
- p = name + path->name.len + 1 + path->len;
- p = ngx_hex_dump(p, (u_char *) &fcn->node.key,
- sizeof(ngx_rbtree_key_t));
- len = NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t);
- p = ngx_hex_dump(p, fcn->key, len);
- *p = '\0';
-
- fcn->count++;
- fcn->deleting = 1;
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- len = path->name.len + 1 + path->len + 2 * NGX_HTTP_CACHE_KEY_LEN;
- ngx_create_hashed_filename(path, name, len);
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache expire: \"%s\"", name);
-
- if (ngx_delete_file(name) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_CRIT, ngx_cycle->log, ngx_errno,
- ngx_delete_file_n " \"%s\" failed", name);
- }
-
- ngx_shmtx_lock(&cache->shpool->mutex);
- fcn->count--;
- fcn->deleting = 0;
- }
-
- if (fcn->count == 0) {
- ngx_queue_remove(q);
- ngx_rbtree_delete(&cache->sh->rbtree, &fcn->node);
- ngx_slab_free_locked(cache->shpool, fcn);
- cache->sh->count--;
- }
-}
-
-
-static ngx_msec_t
-ngx_http_file_cache_manager(void *data)
-{
- ngx_http_file_cache_t *cache = data;
-
- off_t size;
- time_t wait;
- ngx_msec_t elapsed, next;
- ngx_uint_t count, watermark;
-
- cache->last = ngx_current_msec;
- cache->files = 0;
-
- next = (ngx_msec_t) ngx_http_file_cache_expire(cache) * 1000;
-
- if (next == 0) {
- next = cache->manager_sleep;
- goto done;
- }
-
- for ( ;; ) {
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- size = cache->sh->size;
- count = cache->sh->count;
- watermark = cache->sh->watermark;
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache size: %O c:%ui w:%i",
- size, count, (ngx_int_t) watermark);
-
- if (size < cache->max_size && count < watermark) {
- break;
- }
-
- wait = ngx_http_file_cache_forced_expire(cache);
-
- if (wait > 0) {
- next = (ngx_msec_t) wait * 1000;
- break;
- }
-
- if (ngx_quit || ngx_terminate) {
- break;
- }
-
- if (++cache->files >= cache->manager_files) {
- next = cache->manager_sleep;
- break;
- }
-
- ngx_time_update();
-
- elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
-
- if (elapsed >= cache->manager_threshold) {
- next = cache->manager_sleep;
- break;
- }
- }
-
-done:
-
- elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
-
- ngx_log_debug3(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache manager: %ui e:%M n:%M",
- cache->files, elapsed, next);
-
- return next;
-}
-
-
-static void
-ngx_http_file_cache_loader(void *data)
-{
- ngx_http_file_cache_t *cache = data;
-
- ngx_tree_ctx_t tree;
-
- if (!cache->sh->cold || cache->sh->loading) {
- return;
- }
-
- if (!ngx_atomic_cmp_set(&cache->sh->loading, 0, ngx_pid)) {
- return;
- }
-
- ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache loader");
-
- tree.init_handler = NULL;
- tree.file_handler = ngx_http_file_cache_manage_file;
- tree.pre_tree_handler = ngx_http_file_cache_manage_directory;
- tree.post_tree_handler = ngx_http_file_cache_noop;
- tree.spec_handler = ngx_http_file_cache_delete_file;
- tree.data = cache;
- tree.alloc = 0;
- tree.log = ngx_cycle->log;
-
- cache->last = ngx_current_msec;
- cache->files = 0;
-
- if (ngx_walk_tree(&tree, &cache->path->name) == NGX_ABORT) {
- cache->sh->loading = 0;
- return;
- }
-
- cache->sh->cold = 0;
- cache->sh->loading = 0;
-
- ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
- "http file cache: %V %.3fM, bsize: %uz",
- &cache->path->name,
- ((double) cache->sh->size * cache->bsize) / (1024 * 1024),
- cache->bsize);
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
-{
- return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_manage_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
-{
- ngx_msec_t elapsed;
- ngx_http_file_cache_t *cache;
-
- cache = ctx->data;
-
- if (ngx_http_file_cache_add_file(ctx, path) != NGX_OK) {
- (void) ngx_http_file_cache_delete_file(ctx, path);
- }
-
- if (++cache->files >= cache->loader_files) {
- ngx_http_file_cache_loader_sleep(cache);
-
- } else {
- ngx_time_update();
-
- elapsed = ngx_abs((ngx_msec_int_t) (ngx_current_msec - cache->last));
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache loader time elapsed: %M", elapsed);
-
- if (elapsed >= cache->loader_threshold) {
- ngx_http_file_cache_loader_sleep(cache);
- }
- }
-
- return (ngx_quit || ngx_terminate) ? NGX_ABORT : NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_manage_directory(ngx_tree_ctx_t *ctx, ngx_str_t *path)
-{
- if (path->len >= 5
- && ngx_strncmp(path->data + path->len - 5, "/temp", 5) == 0)
- {
- return NGX_DECLINED;
- }
-
- return NGX_OK;
-}
-
-
-static void
-ngx_http_file_cache_loader_sleep(ngx_http_file_cache_t *cache)
-{
- ngx_msleep(cache->loader_sleep);
-
- ngx_time_update();
-
- cache->last = ngx_current_msec;
- cache->files = 0;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_add_file(ngx_tree_ctx_t *ctx, ngx_str_t *name)
-{
- u_char *p;
- ngx_int_t n;
- ngx_uint_t i;
- ngx_http_cache_t c;
- ngx_http_file_cache_t *cache;
-
- if (name->len < 2 * NGX_HTTP_CACHE_KEY_LEN) {
- return NGX_ERROR;
- }
-
- /*
- * Temporary files in cache have a suffix consisting of a dot
- * followed by 10 digits.
- */
-
- if (name->len >= 2 * NGX_HTTP_CACHE_KEY_LEN + 1 + 10
- && name->data[name->len - 10 - 1] == '.')
- {
- return NGX_OK;
- }
-
- if (ctx->size < (off_t) sizeof(ngx_http_file_cache_header_t)) {
- ngx_log_error(NGX_LOG_CRIT, ctx->log, 0,
- "cache file \"%s\" is too small", name->data);
- return NGX_ERROR;
- }
-
- ngx_memzero(&c, sizeof(ngx_http_cache_t));
- cache = ctx->data;
-
- c.length = ctx->size;
- c.fs_size = (ctx->fs_size + cache->bsize - 1) / cache->bsize;
-
- p = &name->data[name->len - 2 * NGX_HTTP_CACHE_KEY_LEN];
-
- for (i = 0; i < NGX_HTTP_CACHE_KEY_LEN; i++) {
- n = ngx_hextoi(p, 2);
-
- if (n == NGX_ERROR) {
- return NGX_ERROR;
- }
-
- p += 2;
-
- c.key[i] = (u_char) n;
- }
-
- return ngx_http_file_cache_add(cache, &c);
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_add(ngx_http_file_cache_t *cache, ngx_http_cache_t *c)
-{
- ngx_http_file_cache_node_t *fcn;
-
- ngx_shmtx_lock(&cache->shpool->mutex);
-
- fcn = ngx_http_file_cache_lookup(cache, c->key);
-
- if (fcn == NULL) {
-
- fcn = ngx_slab_calloc_locked(cache->shpool,
- sizeof(ngx_http_file_cache_node_t));
- if (fcn == NULL) {
- ngx_http_file_cache_set_watermark(cache);
-
- if (cache->fail_time != ngx_time()) {
- cache->fail_time = ngx_time();
- ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
- "could not allocate node%s", cache->shpool->log_ctx);
- }
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
- return NGX_ERROR;
- }
-
- cache->sh->count++;
-
- ngx_memcpy((u_char *) &fcn->node.key, c->key, sizeof(ngx_rbtree_key_t));
-
- ngx_memcpy(fcn->key, &c->key[sizeof(ngx_rbtree_key_t)],
- NGX_HTTP_CACHE_KEY_LEN - sizeof(ngx_rbtree_key_t));
-
- ngx_rbtree_insert(&cache->sh->rbtree, &fcn->node);
-
- fcn->uses = 1;
- fcn->exists = 1;
- fcn->fs_size = c->fs_size;
-
- cache->sh->size += c->fs_size;
-
- } else {
- ngx_queue_remove(&fcn->queue);
- }
-
- fcn->expire = ngx_time() + cache->inactive;
-
- ngx_queue_insert_head(&cache->sh->queue, &fcn->queue);
-
- ngx_shmtx_unlock(&cache->shpool->mutex);
-
- return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_file_cache_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
-{
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
- "http file cache delete: \"%s\"", path->data);
-
- if (ngx_delete_file(path->data) == NGX_FILE_ERROR) {
- ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
- ngx_delete_file_n " \"%s\" failed", path->data);
- }
-
- return NGX_OK;
-}
-
-
-static void
-ngx_http_file_cache_set_watermark(ngx_http_file_cache_t *cache)
-{
- cache->sh->watermark = cache->sh->count - cache->sh->count / 8;
-
- ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
- "http file cache watermark: %ui", cache->sh->watermark);
-}
-
-
-time_t
-ngx_http_file_cache_valid(ngx_array_t *cache_valid, ngx_uint_t status)
-{
- ngx_uint_t i;
- ngx_http_cache_valid_t *valid;
-
- if (cache_valid == NULL) {
- return 0;
- }
-
- valid = cache_valid->elts;
- for (i = 0; i < cache_valid->nelts; i++) {
-
- if (valid[i].status == 0) {
- return valid[i].valid;
- }
-
- if (valid[i].status == status) {
- return valid[i].valid;
- }
- }
-
- return 0;
-}
-
-
-char *
-ngx_http_file_cache_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
-{
- char *confp = conf;
-
- off_t max_size;
- u_char *last, *p;
- time_t inactive;
- ssize_t size;
- ngx_str_t s, name, *value;
- ngx_int_t loader_files, manager_files;
- ngx_msec_t loader_sleep, manager_sleep, loader_threshold,
- manager_threshold;
- ngx_uint_t i, n, use_temp_path;
- ngx_array_t *caches;
- ngx_http_file_cache_t *cache, **ce;
-
- cache = ngx_pcalloc(cf->pool, sizeof(ngx_http_file_cache_t));
- if (cache == NULL) {
- return NGX_CONF_ERROR;
- }
-
- cache->path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
- if (cache->path == NULL) {
- return NGX_CONF_ERROR;
- }
-
- use_temp_path = 1;
-
- inactive = 600;
-
- loader_files = 100;
- loader_sleep = 50;
- loader_threshold = 200;
-
- manager_files = 100;
- manager_sleep = 50;
- manager_threshold = 200;
-
- name.len = 0;
- size = 0;
- max_size = NGX_MAX_OFF_T_VALUE;
-
- value = cf->args->elts;
-
- cache->path->name = value[1];
-
- if (cache->path->name.data[cache->path->name.len - 1] == '/') {
- cache->path->name.len--;
- }
-
- if (ngx_conf_full_name(cf->cycle, &cache->path->name, 0) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
-
- for (i = 2; i < cf->args->nelts; i++) {
-
- if (ngx_strncmp(value[i].data, "levels=", 7) == 0) {
-
- p = value[i].data + 7;
- last = value[i].data + value[i].len;
-
- for (n = 0; n < NGX_MAX_PATH_LEVEL && p < last; n++) {
-
- if (*p > '0' && *p < '3') {
-
- cache->path->level[n] = *p++ - '0';
- cache->path->len += cache->path->level[n] + 1;
-
- if (p == last) {
- break;
- }
-
- if (*p++ == ':' && n < NGX_MAX_PATH_LEVEL - 1 && p < last) {
- continue;
- }
-
- goto invalid_levels;
- }
-
- goto invalid_levels;
- }
-
- if (cache->path->len < 10 + NGX_MAX_PATH_LEVEL) {
- continue;
- }
-
- invalid_levels:
-
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid \"levels\" \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- if (ngx_strncmp(value[i].data, "use_temp_path=", 14) == 0) {
-
- if (ngx_strcmp(&value[i].data[14], "on") == 0) {
- use_temp_path = 1;
-
- } else if (ngx_strcmp(&value[i].data[14], "off") == 0) {
- use_temp_path = 0;
-
- } else {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid use_temp_path value \"%V\", "
- "it must be \"on\" or \"off\"",
- &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "keys_zone=", 10) == 0) {
-
- name.data = value[i].data + 10;
-
- p = (u_char *) ngx_strchr(name.data, ':');
-
- if (p) {
- name.len = p - name.data;
-
- p++;
-
- s.len = value[i].data + value[i].len - p;
- s.data = p;
-
- size = ngx_parse_size(&s);
- if (size > 8191) {
- continue;
- }
- }
-
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid keys zone size \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- if (ngx_strncmp(value[i].data, "inactive=", 9) == 0) {
-
- s.len = value[i].len - 9;
- s.data = value[i].data + 9;
-
- inactive = ngx_parse_time(&s, 1);
- if (inactive == (time_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid inactive value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "max_size=", 9) == 0) {
-
- s.len = value[i].len - 9;
- s.data = value[i].data + 9;
-
- max_size = ngx_parse_offset(&s);
- if (max_size < 0) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid max_size value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "loader_files=", 13) == 0) {
-
- loader_files = ngx_atoi(value[i].data + 13, value[i].len - 13);
- if (loader_files == NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid loader_files value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "loader_sleep=", 13) == 0) {
-
- s.len = value[i].len - 13;
- s.data = value[i].data + 13;
-
- loader_sleep = ngx_parse_time(&s, 0);
- if (loader_sleep == (ngx_msec_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid loader_sleep value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "loader_threshold=", 17) == 0) {
-
- s.len = value[i].len - 17;
- s.data = value[i].data + 17;
-
- loader_threshold = ngx_parse_time(&s, 0);
- if (loader_threshold == (ngx_msec_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid loader_threshold value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "manager_files=", 14) == 0) {
-
- manager_files = ngx_atoi(value[i].data + 14, value[i].len - 14);
- if (manager_files == NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid manager_files value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "manager_sleep=", 14) == 0) {
-
- s.len = value[i].len - 14;
- s.data = value[i].data + 14;
-
- manager_sleep = ngx_parse_time(&s, 0);
- if (manager_sleep == (ngx_msec_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid manager_sleep value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- if (ngx_strncmp(value[i].data, "manager_threshold=", 18) == 0) {
-
- s.len = value[i].len - 18;
- s.data = value[i].data + 18;
-
- manager_threshold = ngx_parse_time(&s, 0);
- if (manager_threshold == (ngx_msec_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid manager_threshold value \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- continue;
- }
-
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid parameter \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
-
- if (name.len == 0 || size == 0) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "\"%V\" must have \"keys_zone\" parameter",
- &cmd->name);
- return NGX_CONF_ERROR;
- }
-
- cache->path->manager = ngx_http_file_cache_manager;
- cache->path->loader = ngx_http_file_cache_loader;
- cache->path->data = cache;
- cache->path->conf_file = cf->conf_file->file.name.data;
- cache->path->line = cf->conf_file->line;
- cache->loader_files = loader_files;
- cache->loader_sleep = loader_sleep;
- cache->loader_threshold = loader_threshold;
- cache->manager_files = manager_files;
- cache->manager_sleep = manager_sleep;
- cache->manager_threshold = manager_threshold;
-
- if (ngx_add_path(cf, &cache->path) != NGX_OK) {
- return NGX_CONF_ERROR;
- }
-
- cache->shm_zone = ngx_shared_memory_add(cf, &name, size, cmd->post);
- if (cache->shm_zone == NULL) {
- return NGX_CONF_ERROR;
- }
-
- if (cache->shm_zone->data) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "duplicate zone \"%V\"", &name);
- return NGX_CONF_ERROR;
- }
-
-
- cache->shm_zone->init = ngx_http_file_cache_init;
- cache->shm_zone->data = cache;
-
- cache->use_temp_path = use_temp_path;
-
- cache->inactive = inactive;
- cache->max_size = max_size;
-
- caches = (ngx_array_t *) (confp + cmd->offset);
-
- ce = ngx_array_push(caches);
- if (ce == NULL) {
- return NGX_CONF_ERROR;
- }
-
- *ce = cache;
-
- return NGX_CONF_OK;
-}
-
-
-char *
-ngx_http_file_cache_valid_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf)
-{
- char *p = conf;
-
- time_t valid;
- ngx_str_t *value;
- ngx_uint_t i, n, status;
- ngx_array_t **a;
- ngx_http_cache_valid_t *v;
- static ngx_uint_t statuses[] = { 200, 301, 302 };
-
- a = (ngx_array_t **) (p + cmd->offset);
-
- if (*a == NGX_CONF_UNSET_PTR) {
- *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_cache_valid_t));
- if (*a == NULL) {
- return NGX_CONF_ERROR;
- }
- }
-
- value = cf->args->elts;
- n = cf->args->nelts - 1;
-
- valid = ngx_parse_time(&value[n], 1);
- if (valid == (time_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid time value \"%V\"", &value[n]);
- return NGX_CONF_ERROR;
- }
-
- if (n == 1) {
-
- for (i = 0; i < 3; i++) {
- v = ngx_array_push(*a);
- if (v == NULL) {
- return NGX_CONF_ERROR;
- }
-
- v->status = statuses[i];
- v->valid = valid;
- }
-
- return NGX_CONF_OK;
- }
-
- for (i = 1; i < n; i++) {
-
- if (ngx_strcmp(value[i].data, "any") == 0) {
-
- status = 0;
-
- } else {
-
- status = ngx_atoi(value[i].data, value[i].len);
- if (status < 100) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid status \"%V\"", &value[i]);
- return NGX_CONF_ERROR;
- }
- }
-
- v = ngx_array_push(*a);
- if (v == NULL) {
- return NGX_CONF_ERROR;
- }
-
- v->status = status;
- v->valid = valid;
- }
-
- return NGX_CONF_OK;
-}