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https://issues.apache.org/jira/browse/TWILL-138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15550447#comment-15550447
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ASF GitHub Bot commented on TWILL-138:
--------------------------------------
Github user chtyim commented on a diff in the pull request:
https://github.com/apache/twill/pull/14#discussion_r82099632
--- Diff:
twill-core/src/main/java/org/apache/twill/internal/utils/LogLevelUtil.java ---
@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.twill.internal.utils;
+
+import com.google.common.collect.Maps;
+import org.apache.twill.api.logging.LogEntry;
+import org.apache.twill.internal.Constants;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import javax.annotation.Nullable;
+
+/**
+ * Collections of helper functions for log level change.
+ */
+public final class LogLevelUtil {
+
+ /**
+ * Convert the log level argument value type to string.
+ */
+ public static Map<String, String>
convertLogLevelValuesToString(Map<String, LogEntry.Level> logLevelArguments) {
+ return Maps.transformEntries(logLevelArguments, new
Maps.EntryTransformer<String, LogEntry.Level, String>() {
+ @Override
+ public String transformEntry(String loggerName, LogEntry.Level
level) {
+ return level.name();
+ }
+ });
+ }
+
+ /**
+ * Convert the log level argument type to LogEntry.Level
+ */
+ public static Map<String, LogEntry.Level>
convertLogLevelValuesToLogEntry(Map<String, String> logLevelArguments) {
+ return Maps.transformEntries(logLevelArguments, new
Maps.EntryTransformer<String, String, LogEntry.Level>() {
+ @Override
+ public LogEntry.Level transformEntry(String loggerName, String
level) {
+ return LogEntry.Level.valueOf(level);
+ }
+ });
+ }
+
+ /**
+ * Get the log level arguments for a twill runnable.
+ *
+ * @param runnableName name of the runnable.
+ * @param logLevelArguments the arguments for all runnables.
+ * @return the map of the log level arguments for the runnable, empty if
there is no argument.
+ */
+ public static Map<String, LogEntry.Level> getLogLevelForRunnable(
--- End diff --
Same here.
> Runtime change of Application runnable log level
> ------------------------------------------------
>
> Key: TWILL-138
> URL: https://issues.apache.org/jira/browse/TWILL-138
> Project: Apache Twill
> Issue Type: New Feature
> Components: core
> Reporter: Henry Saputra
>
> With TWILL-24 is supported for setting log level when starting the Twill
> application, next enhancement is to able to send command to update the
> aggregate log level for a particular runnable in a Twill application.
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