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From wr...@apache.org
Subject svn commit: r1497423 - in /httpd/httpd/branches/2.2.x: CHANGES STATUS docs/manual/mod/mod_proxy.xml modules/proxy/mod_proxy.c modules/proxy/mod_proxy.h modules/proxy/mod_proxy_balancer.c modules/proxy/mod_proxy_http.c
Date Thu, 27 Jun 2013 16:22:31 GMT
Author: wrowe
Date: Thu Jun 27 16:22:31 2013
New Revision: 1497423

URL: http://svn.apache.org/r1497423
Log:
mod_proxy_balancer: Add failontimeout parameter. Timeout will put worker
in error state if an IO timeout is detected.

Backports: r1465839
Submitted by: druggeri
Reviewed by: druggeri, wrowe, rjung


Modified:
    httpd/httpd/branches/2.2.x/CHANGES
    httpd/httpd/branches/2.2.x/STATUS
    httpd/httpd/branches/2.2.x/docs/manual/mod/mod_proxy.xml
    httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.c
    httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.h
    httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c
    httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_http.c

Modified: httpd/httpd/branches/2.2.x/CHANGES
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/CHANGES [utf-8] (original)
+++ httpd/httpd/branches/2.2.x/CHANGES [utf-8] Thu Jun 27 16:22:31 2013
@@ -24,6 +24,10 @@ Changes with Apache 2.2.25
   *) mod_dav: Ensure URI is correctly uriencoded on return. PR 54611
      [Timothy Wood <tjw omnigroup.com>]
 
+  *) Added balancer parameter failontimeout to allow server admin
+     to configure an IO timeout as an error in the balancer.
+     [Daniel Ruggeri]
+
 Changes with Apache 2.2.24
 
   *) SECURITY: CVE-2012-3499 (cve.mitre.org)

Modified: httpd/httpd/branches/2.2.x/STATUS
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/STATUS?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/STATUS (original)
+++ httpd/httpd/branches/2.2.x/STATUS Thu Jun 27 16:22:31 2013
@@ -114,15 +114,6 @@ RELEASE SHOWSTOPPERS:
 PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
   [ start all new proposals below, under PATCHES PROPOSED. ]
   
-  * mod_proxy_balancer: Add failontimeout parameter. Timeout will put worker
-    in error state if an IO timeout is detected.
-    trunk patch: http://svn.apache.org/viewvc?view=revision&revision=1465839
-    2.4.x patch: http://svn.apache.org/viewvc?view=revision&revision=1476689
-    2.2.x patch: http://people.apache.org/~druggeri/patches/httpd-2.2.x-failontimeout.patch
-    +1: druggeri, wrowe, rjung
-    rjung: it would be nice to fix the indentation for the new
-           ap_log_rerror(...) in modules/proxy/mod_proxy_balancer.c.
-
   * mod_dav: Make sure that when we prepare an If URL for Etag comparison,     
     we compare unencoded paths. PR 53910 [Timothy Wood <tjw omnigroup com>]
     trunk patch: http://svn.apache.org/r1470940

Modified: httpd/httpd/branches/2.2.x/docs/manual/mod/mod_proxy.xml
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/docs/manual/mod/mod_proxy.xml?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/docs/manual/mod/mod_proxy.xml (original)
+++ httpd/httpd/branches/2.2.x/docs/manual/mod/mod_proxy.xml Thu Jun 27 16:22:31 2013
@@ -1005,6 +1005,13 @@ expressions</description>
         in the list. Worker recovery behaves the same as other worker errors.
         Available with Apache HTTP Server 2.2.17 and later.
     </td></tr>
+    <tr><td>failontimeout</td>
+        <td>Off</td>
+        <td>If set, an IO read timeout after a request is sent to the backend will
+        force the worker into error state. Worker recovery behaves the same as other
+        worker errors.
+        Available with Apache HTTP Server 2.2.25 and later.
+    </td></tr>
     <tr><td>forcerecovery</td>
         <td>On</td>
         <td>Force the immediate recovery of all workers without considering the

Modified: httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.c
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.c?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.c (original)
+++ httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.c Thu Jun 27 16:22:31 2013
@@ -387,6 +387,14 @@ static const char *set_balancer_param(pr
         }
 
     }
+    else if (!strcasecmp(key, "failontimeout")) {
+        if (!strcasecmp(val, "on"))
+            balancer->failontimeout = 1;
+        else if (!strcasecmp(val, "off"))
+            balancer->failontimeout = 0;
+        else
+            return "failontimeout must be On|Off";
+    }
     else if (!strcasecmp(key, "forcerecovery")) {
         if (!strcasecmp(val, "on"))
             balancer->forcerecovery = 1;

Modified: httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.h
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.h?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.h (original)
+++ httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy.h Thu Jun 27 16:22:31 2013
@@ -389,6 +389,7 @@ struct proxy_balancer {
 
     apr_array_header_t *errstatuses; /* statuses to force members into error */
     int forcerecovery; /* Force recovery if all workers are in error state */
+    int failontimeout;          /* Whether to mark a member in Err if IO timeout occurs */
 };
 
 struct proxy_balancer_method {

Modified: httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c (original)
+++ httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c Thu Jun 27 16:22:31 2013
@@ -629,6 +629,17 @@ static int proxy_balancer_post_request(p
         }
     }
 
+    if (balancer->failontimeout
+        && (apr_table_get(r->notes, "proxy_timedout")) != NULL) {
+          ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+                        "%s: Forcing worker (%s) into error state "
+                        "due to timeout and 'failonstatus' parameter being set",
+                        balancer->name, worker->name);
+        worker->s->status |= PROXY_WORKER_IN_ERROR;
+        worker->s->error_time = apr_time_now();
+
+    }
+
     if ((rv = PROXY_THREAD_UNLOCK(balancer)) != APR_SUCCESS) {
         ap_log_error(APLOG_MARK, APLOG_ERR, rv, r->server,
             "proxy: BALANCER: (%s). Unlock failed for post_request",

Modified: httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_http.c
URL: http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_http.c?rev=1497423&r1=1497422&r2=1497423&view=diff
==============================================================================
--- httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_http.c (original)
+++ httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_http.c Thu Jun 27 16:22:31 2013
@@ -1410,6 +1410,7 @@ apr_status_t ap_proxy_http_process_respo
                           "proxy: error reading status line from remote "
                           "server %s:%d", backend->hostname, backend->port);
             if (APR_STATUS_IS_TIMEUP(rc)) {
+                apr_table_set(r->notes, "proxy_timedout", "1");
                 ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
                               "proxy: read timeout");
             }



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