[PATCH 5 of 5] Cache lock support for fastcgi, scgi, uwsgi

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1323615378 -10800
# Node ID c162e2269b4c85e4d52f779e5a154ef761f3e6ba
# Parent  9412a31366125763912dff5d592d539eb6102139
Cache lock support for fastcgi, scgi, uwsgi.

diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -380,6 +380,20 @@ static ngx_command_t  ngx_http_fastcgi_c
       offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_methods),
       &ngx_http_upstream_cache_method_mask },
 
+    { ngx_string("fastcgi_cache_lock"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock),
+      NULL },
+
+    { ngx_string("fastcgi_cache_lock_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.cache_lock_timeout),
+      NULL },
+
 #endif
 
     { ngx_string("fastcgi_temp_path"),
@@ -2062,6 +2076,8 @@ ngx_http_fastcgi_create_loc_conf(ngx_con
     conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR;
     conf->upstream.no_cache = NGX_CONF_UNSET_PTR;
     conf->upstream.cache_valid = NGX_CONF_UNSET_PTR;
+    conf->upstream.cache_lock = NGX_CONF_UNSET;
+    conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC;
 #endif
 
     conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
@@ -2299,6 +2315,12 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf
         conf->cache_key = prev->cache_key;
     }
 
+    ngx_conf_merge_value(conf->upstream.cache_lock,
+                              prev->upstream.cache_lock, 0);
+
+    ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout,
+                              prev->upstream.cache_lock_timeout, 5000);
+
 #endif
 
     ngx_conf_merge_value(conf->upstream.pass_request_headers,
diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -247,6 +247,20 @@ static ngx_command_t ngx_http_scgi_comma
       offsetof(ngx_http_scgi_loc_conf_t, upstream.cache_methods),
       &ngx_http_upstream_cache_method_mask },
 
+    { ngx_string("scgi_cache_lock"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_scgi_loc_conf_t, upstream.cache_lock),
+      NULL },
+
+    { ngx_string("scgi_cache_lock_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_scgi_loc_conf_t, upstream.cache_lock_timeout),
+      NULL },
+
 #endif
 
     { ngx_string("scgi_temp_path"),
@@ -1039,6 +1053,8 @@ ngx_http_scgi_create_loc_conf(ngx_conf_t
     conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR;
     conf->upstream.no_cache = NGX_CONF_UNSET_PTR;
     conf->upstream.cache_valid = NGX_CONF_UNSET_PTR;
+    conf->upstream.cache_lock = NGX_CONF_UNSET;
+    conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC;
 #endif
 
     conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
@@ -1266,6 +1282,12 @@ ngx_http_scgi_merge_loc_conf(ngx_conf_t 
         conf->cache_key = prev->cache_key;
     }
 
+    ngx_conf_merge_value(conf->upstream.cache_lock,
+                              prev->upstream.cache_lock, 0);
+
+    ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout,
+                              prev->upstream.cache_lock_timeout, 5000);
+
 #endif
 
     ngx_conf_merge_value(conf->upstream.pass_request_headers,
diff --git a/src/http/modules/ngx_http_uwsgi_module.c b/src/http/modules/ngx_http_uwsgi_module.c
--- a/src/http/modules/ngx_http_uwsgi_module.c
+++ b/src/http/modules/ngx_http_uwsgi_module.c
@@ -274,6 +274,20 @@ static ngx_command_t ngx_http_uwsgi_comm
       offsetof(ngx_http_uwsgi_loc_conf_t, upstream.cache_methods),
       &ngx_http_upstream_cache_method_mask },
 
+    { ngx_string("uwsgi_cache_lock"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_uwsgi_loc_conf_t, upstream.cache_lock),
+      NULL },
+
+    { ngx_string("uwsgi_cache_lock_timeout"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_msec_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_uwsgi_loc_conf_t, upstream.cache_lock_timeout),
+      NULL },
+
 #endif
 
     { ngx_string("uwsgi_temp_path"),
@@ -1090,6 +1104,8 @@ ngx_http_uwsgi_create_loc_conf(ngx_conf_
     conf->upstream.cache_bypass = NGX_CONF_UNSET_PTR;
     conf->upstream.no_cache = NGX_CONF_UNSET_PTR;
     conf->upstream.cache_valid = NGX_CONF_UNSET_PTR;
+    conf->upstream.cache_lock = NGX_CONF_UNSET;
+    conf->upstream.cache_lock_timeout = NGX_CONF_UNSET_MSEC;
 #endif
 
     conf->upstream.hide_headers = NGX_CONF_UNSET_PTR;
@@ -1317,6 +1333,12 @@ ngx_http_uwsgi_merge_loc_conf(ngx_conf_t
         conf->cache_key = prev->cache_key;
     }
 
+    ngx_conf_merge_value(conf->upstream.cache_lock,
+                              prev->upstream.cache_lock, 0);
+
+    ngx_conf_merge_msec_value(conf->upstream.cache_lock_timeout,
+                              prev->upstream.cache_lock_timeout, 5000);
+
 #endif
 
     ngx_conf_merge_value(conf->upstream.pass_request_headers,