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new syntax

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This commit is contained in:
Igor Sysoev 2007-01-07 18:52:34 +00:00
parent e7b5df16ba
commit eb9b9d1c95
1 changed files with 73 additions and 50 deletions
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123
src/http/modules/ngx_http_limit_zone_module.c
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@ -24,8 +24,14 @@ typedef struct {
typedef struct {
ngx_shm_zone_t *shm_zone;
ngx_rbtree_t *rbtree;
ngx_int_t index;
ngx_str_t var;
} ngx_http_limit_zone_ctx_t;
typedef struct {
ngx_shm_zone_t *shm_zone;
ngx_uint_t conn;
} ngx_http_limit_zone_conf_t;
@ -45,14 +51,14 @@ static ngx_int_t ngx_http_limit_zone_init(ngx_conf_t *cf);
static ngx_command_t ngx_http_limit_zone_commands[] = {
{ ngx_string("limit_zone"),
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE2,
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE3,
ngx_http_limit_zone,
0,
0,
NULL },
{ ngx_string("limit_conn"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE3,
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
ngx_http_limit_conn,
NGX_HTTP_LOC_CONF_OFFSET,
0,
@ -98,11 +104,11 @@ ngx_http_limit_zone_handler(ngx_http_request_t *r)
{
size_t len, n;
uint32_t hash;
ngx_rbtree_t *rbtree;
ngx_slab_pool_t *shpool;
ngx_rbtree_node_t *node, *sentinel;
ngx_pool_cleanup_t *cln;
ngx_http_variable_value_t *vv;
ngx_http_limit_zone_ctx_t *ctx;
ngx_http_limit_zone_node_t *lz;
ngx_http_limit_zone_conf_t *lzcf;
ngx_http_limit_zone_cleanup_t *lzcln;
@ -117,7 +123,9 @@ ngx_http_limit_zone_handler(ngx_http_request_t *r)
return NGX_DECLINED;
}
vv = ngx_http_get_indexed_variable(r, lzcf->index);
ctx = lzcf->shm_zone->data;
vv = ngx_http_get_indexed_variable(r, ctx->index);
if (vv == NULL || vv->not_found) {
return NGX_DECLINED;
@ -134,13 +142,12 @@ ngx_http_limit_zone_handler(ngx_http_request_t *r)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
rbtree = lzcf->shm_zone->data;
shpool = (ngx_slab_pool_t *) lzcf->shm_zone->shm.addr;
ngx_shmtx_lock(&shpool->mutex);
node = rbtree->root;
sentinel = rbtree->sentinel;
node = ctx->rbtree->root;
sentinel = ctx->rbtree->sentinel;
while (node != sentinel) {
@ -189,7 +196,7 @@ ngx_http_limit_zone_handler(ngx_http_request_t *r)
lz->conn = 1;
ngx_memcpy(lz->data, vv->data, len);
ngx_rbtree_insert(rbtree, node);
ngx_rbtree_insert(ctx->rbtree, node);
done:
@ -213,12 +220,12 @@ ngx_http_limit_zone_cleanup(void *data)
{
ngx_http_limit_zone_cleanup_t *lzcln = data;
ngx_rbtree_t *rbtree;
ngx_slab_pool_t *shpool;
ngx_rbtree_node_t *node;
ngx_http_limit_zone_ctx_t *ctx;
ngx_http_limit_zone_node_t *lz;
rbtree = lzcln->shm_zone->data;
ctx = lzcln->shm_zone->data;
shpool = (ngx_slab_pool_t *) lzcln->shm_zone->shm.addr;
node = lzcln->node;
lz = (ngx_http_limit_zone_node_t *) &node->color;
@ -231,7 +238,7 @@ ngx_http_limit_zone_cleanup(void *data)
lz->conn--;
if (lz->conn == 0) {
ngx_rbtree_delete(rbtree, node);
ngx_rbtree_delete(ctx->rbtree, node);
ngx_slab_free_locked(shpool, node);
}
@ -242,14 +249,15 @@ ngx_http_limit_zone_cleanup(void *data)
static ngx_int_t
ngx_http_limit_zone_init_zone(ngx_shm_zone_t *shm_zone)
{
ngx_rbtree_t *rbtree;
ngx_slab_pool_t *shpool;
ngx_rbtree_node_t *sentinel;
ngx_slab_pool_t *shpool;
ngx_rbtree_node_t *sentinel;
ngx_http_limit_zone_ctx_t *ctx;
shpool = (ngx_slab_pool_t *) shm_zone->shm.addr;
ctx = shm_zone->data;
rbtree = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_t));
if (rbtree == NULL) {
ctx->rbtree = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_t));
if (ctx->rbtree == NULL) {
return NGX_ERROR;
}
@ -260,11 +268,9 @@ ngx_http_limit_zone_init_zone(ngx_shm_zone_t *shm_zone)
ngx_rbtree_sentinel_init(sentinel);
rbtree->root = sentinel;
rbtree->sentinel = sentinel;
rbtree->insert = ngx_rbtree_insert_value;
shm_zone->data = rbtree;
ctx->rbtree->root = sentinel;
ctx->rbtree->sentinel = sentinel;
ctx->rbtree->insert = ngx_rbtree_insert_value;
return NGX_OK;
}
@ -284,7 +290,6 @@ ngx_http_limit_zone_create_conf(ngx_conf_t *cf)
* set by ngx_pcalloc():
*
* conf->shm_zone = NULL;
* conf->index = 0;
* conf->conn = 0;
*/
@ -309,17 +314,39 @@ ngx_http_limit_zone_merge_conf(ngx_conf_t *cf, void *parent, void *child)
static char *
ngx_http_limit_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ssize_t n;
ngx_str_t *value;
ngx_shm_zone_t *shm_zone;
ssize_t n;
ngx_str_t *value;
ngx_shm_zone_t *shm_zone;
ngx_http_limit_zone_ctx_t *ctx;
value = cf->args->elts;
n = ngx_parse_size(&value[2]);
if (value[2].data[0] != '$') {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid variable name \"%V\"", &value[2]);
return NGX_CONF_ERROR;
}
value[2].len--;
value[2].data++;
ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_limit_zone_ctx_t));
if (ctx == NULL) {
return NGX_CONF_ERROR;
}
ctx->index = ngx_http_get_variable_index(cf, &value[2]);
if (ctx->index == NGX_ERROR) {
return NGX_CONF_ERROR;
}
ctx->var = value[2];
n = ngx_parse_size(&value[3]);
if (n == NGX_ERROR) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid size of limit_zone \"%V\"", &value[2]);
"invalid size of limit_zone \"%V\"", &value[3]);
return NGX_CONF_ERROR;
}
@ -336,7 +363,17 @@ ngx_http_limit_zone(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
return NGX_CONF_ERROR;
}
if (shm_zone->data) {
ctx = shm_zone->data;
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"limit_zone \"%V\" is already bound to variable \"%V\"",
&value[1], &ctx->var);
return NGX_CONF_ERROR;
}
shm_zone->init = ngx_http_limit_zone_init_zone;
shm_zone->data = ctx;
return NGX_CONF_OK;
}
@ -352,33 +389,19 @@ ngx_http_limit_conn(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
value = cf->args->elts;
n = ngx_atoi(value[1].data, value[1].len);
if (n <= 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid number of connections");
return NGX_CONF_ERROR;
}
if (value[2].data[0] != '$') {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid variable name \"%V\"", &value[2]);
return NGX_CONF_ERROR;
}
value[2].len--;
value[2].data++;
lzcf->index = ngx_http_get_variable_index(cf, &value[2]);
if (lzcf->index == NGX_ERROR) {
return NGX_CONF_ERROR;
}
lzcf->shm_zone = ngx_shared_memory_add(cf, &value[3], 0,
lzcf->shm_zone = ngx_shared_memory_add(cf, &value[1], 0,
&ngx_http_limit_zone_module);
if (lzcf->shm_zone == NULL) {
return NGX_CONF_ERROR;
}
n = ngx_atoi(value[2].data, value[2].len);
if (n <= 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid number of connections \"%V\"", &value[2]);
return NGX_CONF_ERROR;
}
lzcf->conn = n;
return NGX_CONF_OK;