Logging: Further clean up logging ctors (#33378)

Drops and unused logging constructor, simplifies a rarely used one, and
removes `Settings` from a third. There is now only a single logging ctor
that takes `Settings` and we'll remove that one in a follow up change.

server/src/main/java/org/elasticsearch/common/logging/Loggers.java

@@ -50,31 +50,25 @@ public class Loggers {
             Setting.Property.NodeScope));
 
     public static Logger getLogger(Class<?> clazz, ShardId shardId, String... prefixes) {
-        return getLogger(clazz, Settings.EMPTY,
-                shardId.getIndex(), asArrayList(Integer.toString(shardId.id()), prefixes).toArray(new String[0]));
+        return getLogger(clazz, shardId.getIndex(), asArrayList(Integer.toString(shardId.id()), prefixes).toArray(new String[0]));
     }
 
     /**
      * Just like {@link #getLogger(Class, ShardId, String...)} but String loggerName instead of
-     * Class.
+     * Class and no extra prefixes.
      */
-    public static Logger getLogger(String loggerName, ShardId shardId, String... prefixes) {
-        return getLogger(loggerName, Settings.EMPTY,
-            asArrayList(shardId.getIndexName(), Integer.toString(shardId.id()), prefixes).toArray(new String[0]));
+    public static Logger getLogger(String loggerName, ShardId shardId) {
+        return ESLoggerFactory.getLogger(formatPrefix(shardId.getIndexName(), Integer.toString(shardId.id())), loggerName);
     }
 
-    public static Logger getLogger(Class<?> clazz, Settings settings, Index index, String... prefixes) {
-        return getLogger(clazz, settings, asArrayList(Loggers.SPACE, index.getName(), prefixes).toArray(new String[0]));
+    public static Logger getLogger(Class<?> clazz, Index index, String... prefixes) {
+        return getLogger(clazz, Settings.EMPTY, asArrayList(Loggers.SPACE, index.getName(), prefixes).toArray(new String[0]));
     }
 
     public static Logger getLogger(Class<?> clazz, Settings settings, String... prefixes) {
         return ESLoggerFactory.getLogger(formatPrefix(prefixes), clazz);
     }
 
-    public static Logger getLogger(String loggerName, Settings settings, String... prefixes) {
-        return ESLoggerFactory.getLogger(formatPrefix(prefixes), loggerName);
-    }
-
     public static Logger getLogger(Logger parentLogger, String s) {
         String prefix = null;
         if (parentLogger instanceof PrefixLogger) {

server/src/main/java/org/elasticsearch/index/AbstractIndexComponent.java

@@ -33,7 +33,7 @@ public abstract class AbstractIndexComponent implements IndexComponent {
      * Constructs a new index component, with the index name and its settings.
      */
     protected AbstractIndexComponent(IndexSettings indexSettings) {
-        this.logger = Loggers.getLogger(getClass(), indexSettings.getSettings(), indexSettings.getIndex());
+        this.logger = Loggers.getLogger(getClass(), indexSettings.getIndex());
         this.deprecationLogger = new DeprecationLogger(logger);
         this.indexSettings = indexSettings;
     }

server/src/main/java/org/elasticsearch/index/CompositeIndexEventListener.java

@@ -51,7 +51,7 @@ final class CompositeIndexEventListener implements IndexEventListener {
             }
         }
         this.listeners = Collections.unmodifiableList(new ArrayList<>(listeners));
-        this.logger = Loggers.getLogger(getClass(), indexSettings.getSettings(), indexSettings.getIndex());
+        this.logger = Loggers.getLogger(getClass(), indexSettings.getIndex());
     }
 
     @Override

server/src/main/java/org/elasticsearch/index/IndexSettings.java

@@ -397,7 +397,7 @@ public IndexSettings(final IndexMetaData indexMetaData, final Settings nodeSetti
         this.settings = Settings.builder().put(nodeSettings).put(indexMetaData.getSettings()).build();
         this.index = indexMetaData.getIndex();
         version = IndexMetaData.SETTING_INDEX_VERSION_CREATED.get(settings);
-        logger = Loggers.getLogger(getClass(), settings, index);
+        logger = Loggers.getLogger(getClass(), index);
         nodeName = Node.NODE_NAME_SETTING.get(settings);
         this.indexMetaData = indexMetaData;
         numberOfShards = settings.getAsInt(IndexMetaData.SETTING_NUMBER_OF_SHARDS, null);

server/src/main/java/org/elasticsearch/index/IndexingSlowLog.java

@@ -20,6 +20,7 @@
 package org.elasticsearch.index;
 
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.elasticsearch.common.Booleans;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.logging.Loggers;
@@ -89,7 +90,7 @@ public final class IndexingSlowLog implements IndexingOperationListener {
             }, Property.Dynamic, Property.IndexScope);
 
     IndexingSlowLog(IndexSettings indexSettings) {
-        this.indexLogger = Loggers.getLogger(INDEX_INDEXING_SLOWLOG_PREFIX + ".index", indexSettings.getSettings());
+        this.indexLogger = LogManager.getLogger(INDEX_INDEXING_SLOWLOG_PREFIX + ".index");
         this.index = indexSettings.getIndex();
 
         indexSettings.getScopedSettings().addSettingsUpdateConsumer(INDEX_INDEXING_SLOWLOG_REFORMAT_SETTING, this::setReformat);

server/src/main/java/org/elasticsearch/index/SearchSlowLog.java

@@ -20,6 +20,7 @@
 package org.elasticsearch.index;
 
 import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.logging.Loggers;
 import org.elasticsearch.common.settings.Setting;
@@ -82,8 +83,8 @@ public final class SearchSlowLog implements SearchOperationListener {
 
     public SearchSlowLog(IndexSettings indexSettings) {
 
-        this.queryLogger = Loggers.getLogger(INDEX_SEARCH_SLOWLOG_PREFIX + ".query", indexSettings.getSettings());
-        this.fetchLogger = Loggers.getLogger(INDEX_SEARCH_SLOWLOG_PREFIX + ".fetch", indexSettings.getSettings());
+        this.queryLogger = LogManager.getLogger(INDEX_SEARCH_SLOWLOG_PREFIX + ".query");
+        this.fetchLogger = LogManager.getLogger(INDEX_SEARCH_SLOWLOG_PREFIX + ".fetch");
 
         indexSettings.getScopedSettings().addSettingsUpdateConsumer(INDEX_SEARCH_SLOWLOG_THRESHOLD_QUERY_WARN_SETTING, this::setQueryWarnThreshold);
         this.queryWarnThreshold = indexSettings.getValue(INDEX_SEARCH_SLOWLOG_THRESHOLD_QUERY_WARN_SETTING).nanos();

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/Watcher.java

@@ -300,7 +300,7 @@ public Collection<Object> createComponents(Client client, ClusterService cluster
         actionFactoryMap.put(EmailAction.TYPE, new EmailActionFactory(settings, emailService, templateEngine, emailAttachmentsParser));
         actionFactoryMap.put(WebhookAction.TYPE, new WebhookActionFactory(settings, httpClient, templateEngine));
         actionFactoryMap.put(IndexAction.TYPE, new IndexActionFactory(settings, client));
-        actionFactoryMap.put(LoggingAction.TYPE, new LoggingActionFactory(settings, templateEngine));
+        actionFactoryMap.put(LoggingAction.TYPE, new LoggingActionFactory(templateEngine));
         actionFactoryMap.put(HipChatAction.TYPE, new HipChatActionFactory(settings, templateEngine, hipChatService));
         actionFactoryMap.put(JiraAction.TYPE, new JiraActionFactory(settings, templateEngine, jiraService));
         actionFactoryMap.put(SlackAction.TYPE, new SlackActionFactory(settings, templateEngine, slackService));

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/actions/logging/ExecutableLoggingAction.java

@@ -6,8 +6,7 @@
 package org.elasticsearch.xpack.watcher.actions.logging;
 
 import org.apache.logging.log4j.Logger;
-import org.elasticsearch.common.logging.Loggers;
-import org.elasticsearch.common.settings.Settings;
+import org.apache.logging.log4j.LogManager;
 import org.elasticsearch.xpack.core.watcher.actions.Action;
 import org.elasticsearch.xpack.core.watcher.actions.ExecutableAction;
 import org.elasticsearch.xpack.core.watcher.execution.WatchExecutionContext;
@@ -22,9 +21,9 @@ public class ExecutableLoggingAction extends ExecutableAction<LoggingAction> {
     private final Logger textLogger;
     private final TextTemplateEngine templateEngine;
 
-    public ExecutableLoggingAction(LoggingAction action, Logger logger, Settings settings, TextTemplateEngine templateEngine) {
+    public ExecutableLoggingAction(LoggingAction action, Logger logger, TextTemplateEngine templateEngine) {
         super(action, logger);
-        this.textLogger = action.category != null ? Loggers.getLogger(action.category, settings) : logger;
+        this.textLogger = action.category != null ? LogManager.getLogger(action.category) : logger;
         this.templateEngine = templateEngine;
     }
 

x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/actions/logging/LoggingActionFactory.java

@@ -5,8 +5,7 @@
  */
 package org.elasticsearch.xpack.watcher.actions.logging;
 
-import org.elasticsearch.common.logging.Loggers;
-import org.elasticsearch.common.settings.Settings;
+import org.apache.logging.log4j.LogManager;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.xpack.core.watcher.actions.ActionFactory;
 import org.elasticsearch.xpack.watcher.common.text.TextTemplateEngine;
@@ -15,18 +14,16 @@
 
 public class LoggingActionFactory extends ActionFactory {
 
-    private final Settings settings;
     private final TextTemplateEngine templateEngine;
 
-    public LoggingActionFactory(Settings settings, TextTemplateEngine templateEngine) {
-        super(Loggers.getLogger(ExecutableLoggingAction.class, settings));
-        this.settings = settings;
+    public LoggingActionFactory(TextTemplateEngine templateEngine) {
+        super(LogManager.getLogger(ExecutableLoggingAction.class));
         this.templateEngine = templateEngine;
     }
 
     @Override
     public ExecutableLoggingAction parseExecutable(String watchId, String actionId, XContentParser parser) throws IOException {
         LoggingAction action = LoggingAction.parse(watchId, actionId, parser);
-        return new ExecutableLoggingAction(action, actionLogger, settings, templateEngine);
+        return new ExecutableLoggingAction(action, actionLogger, templateEngine);
     }
 }

x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/actions/logging/LoggingActionTests.java

@@ -8,7 +8,6 @@
 import org.apache.logging.log4j.Logger;
 import org.elasticsearch.ElasticsearchParseException;
 import org.elasticsearch.common.SuppressLoggerChecks;
-import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.xcontent.XContentBuilder;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.test.ESTestCase;
@@ -92,8 +91,7 @@ public void testExecute() throws Exception {
     }
 
     public void testParser() throws Exception {
-        Settings settings = Settings.EMPTY;
-        LoggingActionFactory parser = new LoggingActionFactory(settings, engine);
+        LoggingActionFactory parser = new LoggingActionFactory(engine);
 
         String text = randomAlphaOfLength(10);
         TextTemplate template = new TextTemplate(text);
@@ -126,14 +124,13 @@ public void testParser() throws Exception {
     }
 
     public void testParserSelfGenerated() throws Exception {
-        Settings settings = Settings.EMPTY;
-        LoggingActionFactory parser = new LoggingActionFactory(settings, engine);
+        LoggingActionFactory parser = new LoggingActionFactory(engine);
 
         String text = randomAlphaOfLength(10);
         TextTemplate template = new TextTemplate(text);
         String category = randomAlphaOfLength(10);
         LoggingAction action = new LoggingAction(template, level, category);
-        ExecutableLoggingAction executable = new ExecutableLoggingAction(action, logger, settings, engine);
+        ExecutableLoggingAction executable = new ExecutableLoggingAction(action, logger, engine);
         XContentBuilder builder = jsonBuilder();
         executable.toXContent(builder, Attachment.XContent.EMPTY_PARAMS);
 
@@ -146,8 +143,7 @@ public void testParserSelfGenerated() throws Exception {
     }
 
     public void testParserBuilder() throws Exception {
-        Settings settings = Settings.EMPTY;
-        LoggingActionFactory parser = new LoggingActionFactory(settings, engine);
+        LoggingActionFactory parser = new LoggingActionFactory(engine);
 
         String text = randomAlphaOfLength(10);
         TextTemplate template = new TextTemplate(text);
@@ -172,8 +168,7 @@ public void testParserBuilder() throws Exception {
     }
 
     public void testParserFailure() throws Exception {
-        Settings settings = Settings.EMPTY;
-        LoggingActionFactory parser = new LoggingActionFactory(settings, engine);
+        LoggingActionFactory parser = new LoggingActionFactory(engine);
 
         XContentBuilder builder = jsonBuilder()
                 .startObject().endObject();

x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/watch/WatchTests.java

@@ -438,7 +438,7 @@ public void testParseWatchWithoutTriggerDoesNotWork() throws Exception {
     private WatchParser createWatchparser() throws Exception {
         LoggingAction loggingAction = new LoggingAction(new TextTemplate("foo"), null, null);
         List<ActionWrapper> actions = Collections.singletonList(new ActionWrapper("_logging_", randomThrottler(), null, null,
-                new ExecutableLoggingAction(loggingAction, logger, settings, new MockTextTemplateEngine())));
+                new ExecutableLoggingAction(loggingAction, logger, new MockTextTemplateEngine())));
 
         ScheduleRegistry scheduleRegistry = registry(new IntervalSchedule(new IntervalSchedule.Interval(1,
                 IntervalSchedule.Interval.Unit.SECONDS)));
@@ -622,7 +622,7 @@ private ActionRegistry registry(List<ActionWrapper> actions, ConditionRegistry c
                     parsers.put(WebhookAction.TYPE, new WebhookActionFactory(settings, httpClient, templateEngine));
                     break;
                 case LoggingAction.TYPE:
-                    parsers.put(LoggingAction.TYPE, new LoggingActionFactory(settings, new MockTextTemplateEngine()));
+                    parsers.put(LoggingAction.TYPE, new LoggingActionFactory(new MockTextTemplateEngine()));
                     break;
             }
         }