mod_proxy: log diagnostics during ProxyPass[Match]

To help out users when debugging ProxyPass and ProxyPassMatch, log all
match attempts (at trace2), as well as matches that are either
successful or explicitly disabled (at trace1).

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1762517 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/log-message-tags/next-number b/docs/log-message-tags/next-number
index e227d71b6004315e2cba7c00e8f5da71565cd114..3b421f0f1867a2dfc64ef3bd28679a1001197c39 100644 (file)
--- a/docs/log-message-tags/next-number
+++ b/docs/log-message-tags/next-number
@@ -1 +1 @@
-3461
+3465

diff --git a/modules/proxy/mod_proxy.c b/modules/proxy/mod_proxy.c
index 166af2795a559b21dbfb1184a679c3a8a426a374..ceb2c397391e32c8234ec762c4c8962fb1ec3169 100644 (file)
--- a/modules/proxy/mod_proxy.c
+++ b/modules/proxy/mod_proxy.c
@@ -666,9 +666,18 @@ PROXY_DECLARE(int) ap_proxy_trans_match(request_rec *r, struct proxy_alias *ent,
         fake = ent->fake;
         real = ent->real;
     }
+
+    ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, APLOGNO(03461)
+                  "attempting to match URI path '%s' against %s '%s' for "
+                  "proxying", r->uri, (ent->regex ? "pattern" : "prefix"),
+                  fake);
+
     if (ent->regex) {
         if (!ap_regexec(ent->regex, r->uri, AP_MAX_REG_MATCH, regm, 0)) {
             if ((real[0] == '!') && (real[1] == '\0')) {
+                ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03462)
+                              "proxying is explicitly disabled for URI path "
+                              "'%s'; declining", r->uri);
                 return DECLINED;
             }
             /* test that we haven't reduced the URI */
@@ -712,6 +721,9 @@ PROXY_DECLARE(int) ap_proxy_trans_match(request_rec *r, struct proxy_alias *ent,
 
         if (len != 0) {
             if ((real[0] == '!') && (real[1] == '\0')) {
+                ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03463)
+                              "proxying is explicitly disabled for URI path "
+                              "'%s'; declining", r->uri);
                 return DECLINED;
             }
             if (nocanon && len != alias_match(r->unparsed_uri, ent->fake)) {
@@ -740,6 +752,11 @@ PROXY_DECLARE(int) ap_proxy_trans_match(request_rec *r, struct proxy_alias *ent,
         if (ent->flags & PROXYPASS_NOQUERY) {
             apr_table_setn(r->notes, "proxy-noquery", "1");
         }
+
+        ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, APLOGNO(03464)
+                      "URI path '%s' matches proxy handler '%s'", r->uri,
+                      found);
+
         return OK;
     }