Merge pull request #123 from comemaryvallee/feat/hide_uuid_with_URI_METRICS_DETAILED_true

Added feature: UUID obfuscation in URI label with URI_METRICS_DETAILED enabled

Author: pb82

README.md

@@ -412,6 +412,25 @@ keycloak_request_duration_count{code="200",method="GET",resource="admin,admin/se
 keycloak_request_duration_sum{code="200",method="GET",resource="admin,admin/serverinfo",uri="",} 19.0
 ```
 
+To replace `users` or `clients` UUID values by a generic `{id}` with ```URI_METRICS_DETAILED``` enabled,
+set ```URI_METRICS_UUID_HIDDEN``` to `true`
+
+```c
+# HELP keycloak_request_duration Request duration
+# TYPE keycloak_request_duration histogram
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="50.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="100.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="250.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="500.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="1000.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="2000.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="10000.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="30000.0",} 6.0
+keycloak_request_duration_bucket{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",le="+Inf",} 6.0
+keycloak_request_duration_count{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",} 6.0
+keycloak_request_duration_sum{code="200",method="GET",resource="admin,admin/realms",uri="admin/realms/master/users/{id}",} 41.0
+```
+
 ## External Access
 
 To disable metrics being externally accessible to a cluster. Set the environment variable 'DISABLE_EXTERNAL_ACCESS'. Once set enable the header 'X-Forwarded-Host' on your proxy. This is enabled by default on HA Proxy on Openshift.

src/main/java/org/jboss/aerogear/keycloak/metrics/ResourceExtractor.java

@@ -13,6 +13,7 @@ class ResourceExtractor {
     private static final boolean URI_METRICS_ENABLED = Boolean.parseBoolean(System.getenv("URI_METRICS_ENABLED"));
     private static final boolean URI_METRICS_DETAILED = Boolean.parseBoolean(System.getenv("URI_METRICS_DETAILED"));
     private static final String URI_METRICS_FILTER = System.getenv("URI_METRICS_FILTER");
+    private static final boolean URI_METRICS_UUID_HIDDEN = Boolean.parseBoolean(System.getenv("URI_METRICS_UUID_HIDDEN"));
 
     private ResourceExtractor() {
     }
@@ -91,13 +92,18 @@ private static StringBuilder getURIDetailed(StringBuilder sb, List<String> match
         String uri = matchedURIs.get(0);
 
         if (URI_METRICS_DETAILED) {
-            sb.append(uri);
+            if (URI_METRICS_UUID_HIDDEN) {
+                uri = uri.replaceAll("\\w{8}-\\w{4}-\\w{4}-\\w{4}-\\w{12}", "{id}");
+                sb.append(uri);
+            } else {
+                sb.append(uri);
+            }
         } else {
             String[] realm = uri.split("/");
             if (realm.length != 1) {
                 if (uri.startsWith("admin/realms/")) {
                     uri = uri.replace(realm[2], "{realm}");
-                    if (realm.length > 4 && realm[3].equals("clients")) {
+                    if (realm.length > 4 && (realm[3].equals("clients") || realm[3].equals("users"))) {
                         uri = uri.replace(realm[4], "{id}");
                     }
                 }