fix(frontend logs): Silencing harmless log messages (and adding path for future)

datahub-frontend/app/log/LogMessageFilter.java

@@ -0,0 +1,36 @@
+package log;
+
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.filter.AbstractMatcherFilter;
+import ch.qos.logback.core.spi.FilterReply;
+import java.util.ArrayList;
+import java.util.List;
+
+
+/**
+ * A Log Filter that can be configured to omit logs containing a specific message string.
+ * Configured inside logback.xml.
+ */
+public class LogMessageFilter extends AbstractMatcherFilter<ILoggingEvent> {
+
+  /**
+   * A set of messages to exclude.
+   */
+  private final List<String> excluded = new ArrayList<>();
+
+  @Override
+  public FilterReply decide(ILoggingEvent event) {
+    if (!isStarted()) {
+      return FilterReply.NEUTRAL;
+    }
+
+    if (this.excluded.stream().anyMatch(message -> event.getFormattedMessage().contains(message))) {
+      return FilterReply.DENY;
+    }
+    return FilterReply.ACCEPT;
+  }
+
+  public void addExcluded(String message) {
+    this.excluded.add(message);
+  }
+}

datahub-frontend/app/security/AuthenticationManager.java

@@ -58,8 +58,6 @@ public void handle(@Nonnull Callback[] callbacks) {
         } else if (callback instanceof PasswordCallback) {
           pc = (PasswordCallback) callback;
           pc.setPassword(this.password.toCharArray());
-        } else {
-          Logger.warn("The submitted callback is unsupported! type: " + callback.getClass(), callback);
         }
       }
     }

datahub-frontend/conf/logback.xml

@@ -10,6 +10,10 @@
     <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
       <level>INFO</level>
     </filter>
+    <filter class="log.LogMessageFilter">
+      <excluded>Unable to renew the session. The session store may not support this feature</excluded>
+      <excluded>Preferred JWS algorithm: null not available. Using all metadata algorithms:</excluded>
+    </filter>
   </appender>
 
   <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

datahub-frontend/run/logback.xml

@@ -10,6 +10,10 @@
     <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
       <level>INFO</level>
     </filter>
+    <filter class="log.LogMessageFilter">
+      <excluded>Unable to renew the session. The session store may not support this feature</excluded>
+      <excluded>Preferred JWS algorithm: null not available. Using all metadata algorithms:</excluded>
+    </filter>
   </appender>
 
   <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">