Session cache affinity

Closes #42776

Signed-off-by: Pedro Ruivo <1492066+pruivo@users.noreply.github.com>
Signed-off-by: Alexander Schwartz <alexander.schwartz@gmx.net>
Signed-off-by: Alexander Schwartz <alexander.schwartz@ibm.com>
Co-authored-by: Pedro Ruivo <1492066+pruivo@users.noreply.github.com>
Co-authored-by: Alexander Schwartz <alexander.schwartz@gmx.net>
Co-authored-by: Steven Hawkins <shawkins@redhat.com>
Co-authored-by: Alexander Schwartz <alexander.schwartz@ibm.com>

test-framework/core/src/main/java/org/keycloak/testframework/events/EventMatchers.java

@@ -2,9 +2,11 @@ package org.keycloak.testframework.events;
 
 import org.hamcrest.Description;
 import org.hamcrest.Matcher;
+import org.hamcrest.Matchers;
 import org.hamcrest.TypeSafeMatcher;
 
 import java.util.UUID;
+import java.util.regex.Pattern;
 
 public class EventMatchers {
 
@@ -12,6 +14,32 @@ public class EventMatchers {
         return new UUIDMatcher();
     }
 
+    public static Matcher<String> isCodeId() {
+        // Make the tests pass with the old and the new encoding of code IDs
+        return Matchers.anyOf(isBase64WithAtLeast128Bits(), isUUID());
+    }
+
+    public static Matcher<String> isSessionId() {
+        // Make the tests pass with the old and the new encoding of sessions
+        return Matchers.anyOf(isBase64WithAtLeast128Bits(), isUUID());
+    }
+
+    public static Matcher<String> isBase64WithAtLeast128Bits() {
+        return new TypeSafeMatcher<>() {
+            private static final Pattern BASE64 = Pattern.compile("[-A-Za-z0-9+/_]*");
+
+            @Override
+            protected boolean matchesSafely(String item) {
+                return item.length() >= 24 && item.matches(BASE64.pattern());
+            }
+
+            @Override
+            public void describeTo(Description description) {
+                description.appendText("not an base64 ID with at least 128bits");
+            }
+        };
+    }
+
     private EventMatchers() {
     }