Add claimTypeMismatch log message (#839)

implementation/jwt-auth/src/main/java/io/smallrye/jwt/auth/principal/DefaultJWTCallerPrincipal.java

@@ -28,15 +28,17 @@
 import io.smallrye.jwt.JsonUtils;
 
 /**
- * A default implementation of JWTCallerPrincipal that wraps the jose4j JwtClaims.
+ * A default implementation of JWTCallerPrincipal that wraps the jose4j
+ * JwtClaims.
  *
  * @see JwtClaims
  */
 public class DefaultJWTCallerPrincipal extends JWTCallerPrincipal {
     private final JwtClaims claimsSet;
 
     /**
-     * Create the DefaultJWTCallerPrincipal from the parsed JWT token and the extracted principal name
+     * Create the DefaultJWTCallerPrincipal from the parsed JWT token and the
+     * extracted principal name
      *
      * @param rawToken - raw token value
      * @param tokenType - token type
@@ -115,7 +117,9 @@ protected Object getClaimValue(String claimName) {
                         claim = 0L;
                     }
                 } catch (MalformedClaimException e) {
-                    PrincipalLogging.log.getGroupsFailure(claimName, e);
+                    Object value = claimsSet.getClaimValue(claimType.name());
+                    PrincipalLogging.log.claimTypeMismatch(claimName, claimType.getType().getSimpleName(),
+                            value.getClass().getSimpleName());
                 }
                 break;
             case groups:

implementation/jwt-auth/src/main/java/io/smallrye/jwt/auth/principal/PrincipalLogging.java

@@ -193,4 +193,8 @@ interface PrincipalLogging extends BasicLogger {
     @Message(id = 8044, value = "Encrypted token headers must contain a content type header")
     void encryptedTokenMissingContentType();
 
+    @LogMessage(level = Logger.Level.DEBUG)
+    @Message(id = 8045, value = "Claim %s's value type is expected to be %s but it is %s")
+    void claimTypeMismatch(String claimName, String expectedType, String actualType);
+
 }