Re: Purging an object from the cache [cachemgr patch]

Lars Marowsky-Bree wrote:
>
> It seems virtually impossible to really remove an object from the cache.

Simple way to purge a object from the cache:
client -m PURGE http://...

You have to have a ACL list mentioning the PURGE method to enable it.

acl manager2 method PURGE
http_access deny manager2 !localhost

> This seems rather impractical for me, maybe cachemgr.cgi could
> provide a "purge URL" option?

Yes.

I have attached a small patch that adds "Remove" to cachemgr.cgi.

---
Henrik Nordström

--- squid-1.1.20/src/cachemgr.c.orig Wed Feb 25 22:48:42 1998
+++ squid-1.1.20/src/cachemgr.c Wed Feb 25 23:11:59 1998
@@ -234,9 +234,7 @@
     STATS_NETDB,
     SHUTDOWN,
     REFRESH,
-#ifdef REMOVE_OBJECT
     REMOVE,
-#endif
     MAXOP
 } op_t;
 
@@ -261,9 +259,7 @@
     "stats/netdb",
     "shutdown",
     "refresh",
-#ifdef REMOVE_OBJECT
     "remove",
-#endif
     "unknown"
 };
 
@@ -288,9 +284,7 @@
     "Network Probe Database",
     "Shutdown Cache",
     "Refresh Object (URL required)",
-#ifdef REMOVE_OBJECT
     "Remove Object (URL required)",
-#endif
     "Unknown Operation"
 };
 
@@ -376,9 +370,7 @@
     print_option(op, STATS_R);
     print_option(op, SHUTDOWN);
     print_option(op, REFRESH);
-#ifdef REMOVE_OBJECT
     print_option(op, REMOVE);
-#endif
     printf("</SELECT><BR>\n");
     printf("<HR>\n");
     printf("<INPUT TYPE=\"submit\"> <INPUT TYPE=\"reset\">\n");
@@ -744,12 +736,9 @@
     case REFRESH:
         sprintf(msg, "GET %s HTTP/1.0\r\nPragma: no-cache\r\nAccept: */*\r\n\r\n", url);
         break;
-#ifdef REMOVE_OBJECT
     case REMOVE:
- printf("Remove not yet supported\n");
- exit(0);
- /* NOTREACHED */
-#endif
+ sprintf(msg, "PURGE %s HTTP/1.0\r\nAccept: */*\r\n\r\n", url);
+ break;
     default:
     case MAXOP:
         printf("Unknown operation: %s\n", operation);
@@ -834,6 +823,7 @@
     case STATS_NETDB:
     case SHUTDOWN:
     case REFRESH:
+ case REMOVE:
         break;
     case PARAM:
         if (hasTables) {
@@ -879,10 +869,17 @@
                 else /* End of list */
                     p_state = 0;
             else if ((indx == 0) && (n_loops == 1)) {
- if (op != REFRESH)
- printf("ERROR:%s\n", buf); /* Must be an error message, pass it on */
- else
+ switch (op) {
+ case REFRESH:
                     printf("Refreshed URL: %s\n", url);
+ break;
+ case REMOVE:
+ printf("Removed URL: %s\n", url);
+ break;
+ default:
+ printf("ERROR:%s\n", buf); /* Must be an error message, pass it on */
+ break;
+ }
             } else
                 reserve[cpy_ind++] = buf[indx];
 
Received on Wed Feb 25 1998 - 14:38:59 MST