848 AWS CloudWatch log clean‑up and standardisation for improved trac…

src/main/java/uk/ac/cam/cl/dtg/segue/dao/schools/SchoolListReader.java

@@ -68,21 +68,21 @@ public class SchoolListReader {
    */
   @Inject
   public SchoolListReader(final ISearchProvider searchProvider) {
-    log.info("Initializing SchoolListReader");
+    log.debug("Initializing SchoolListReader");
     this.searchProvider = searchProvider;
 
     String modificationDate;
     try {
       modificationDate = searchProvider.getById(
               SCHOOLS_INDEX_BASE, SchoolsIndexType.METADATA.toString(), "sourceFile").getSource().get("lastModified")
           .toString();
-      log.info("School list data source modification date: {}", modificationDate);
+      log.debug("School list data source modification date: {}", modificationDate);
     } catch (SegueSearchException | ElasticsearchStatusException e) {
       log.error("Failed to retrieve school list modification date", e);
       modificationDate = "unknown";
     }
     dataSourceModificationDate = modificationDate;
-    log.info("SchoolListReader initialized successfully");
+    log.debug("SchoolListReader initialized successfully");
   }
 
   /**

src/main/java/uk/ac/cam/cl/dtg/segue/etl/ContentIndexer.java

@@ -121,7 +121,7 @@ void loadAndIndexContent(final String version) throws Exception, VersionLockedEx
       throw new VersionLockedException(version);
     }
 
-    log.info("Acquired lock for version " + sanitiseInternalLogValue(version) + ". Indexing.");
+    log.debug("Acquired lock for version " + sanitiseInternalLogValue(version) + ". Indexing.");
 
     try {
 
@@ -131,7 +131,7 @@ void loadAndIndexContent(final String version) throws Exception, VersionLockedEx
       // The case where only some of the content types have been successfully indexed for this version, should
       // never happen but is covered by an expunge at the start of #buildElasticSearchIndex(...).
       if (allContentTypesAreIndexedForVersion(version)) {
-        log.info("Content already indexed: " + sanitiseInternalLogValue(version));
+        log.debug("Content already indexed: " + sanitiseInternalLogValue(version));
         return;
       }
 

src/main/java/uk/ac/cam/cl/dtg/segue/etl/ETLManager.java

@@ -55,10 +55,10 @@ class ETLManager {
   }
 
   void setNamedVersion(final String alias, final String version) throws Exception {
-    log.info("Requested aliased version: {} - {}", alias, version);
+    log.debug("Requested aliased version: {} - {}", alias, version);
     indexer.loadAndIndexContent(version);
     indexer.setNamedVersion(alias, version);
-    log.info("Version {} with alias '{}' is successfully indexed.", version, alias);
+    log.debug("Version {} with alias '{}' is successfully indexed.", version, alias);
   }
 
   // Indexes all content in idempotent fashion. If the content is already indexed no action is taken.
@@ -95,13 +95,13 @@ private class ContentIndexerTask implements Runnable {
 
     @Override
     public void run() {
-      log.info("Starting content indexer thread.");
+      log.debug("Starting content indexer thread.");
       try {
         indexContent();
       } catch (Exception e) {
         log.error("ContentIndexerTask failed.", e);
       }
-      log.info("Content indexer thread complete, waiting for next scheduled run.");
+      log.debug("Content indexer thread complete, waiting for next scheduled run.");
     }
   }
 }

src/main/java/uk/ac/cam/cl/dtg/segue/etl/ElasticSearchIndexer.java

@@ -191,6 +191,7 @@ boolean addOrMoveIndexAlias(final String aliasBase, final String indexBaseTarget
                               final List<String> indexTypeTargets) {
     String indexWithPrevious = null; // This is the index that has the <alias>_previous alias
     String indexWithCurrent = null; // This is the index that has the <alias> alias.
+    int alreadyCorrectCount = 0; // Count of aliases that don't need moving (reduces log noise)
 
     for (String indexTypeTarget : indexTypeTargets) {
       String typedAlias = ElasticSearchProvider.produceTypedIndexName(aliasBase, indexTypeTarget);
@@ -242,8 +243,7 @@ boolean addOrMoveIndexAlias(final String aliasBase, final String indexBaseTarget
       }
 
       if (indexWithCurrent != null && indexWithCurrent.equals(typedIndexTarget)) {
-        log.info("Not moving alias '" + sanitiseInternalLogValue(typedAlias)
-            + "' - it already points to the right index.");
+        alreadyCorrectCount++;
       } else {
         IndicesAliasesRequest request = new IndicesAliasesRequest();
 
@@ -284,6 +284,7 @@ boolean addOrMoveIndexAlias(final String aliasBase, final String indexBaseTarget
       }
 
     }
+    log.debug("{}/{} aliases already correct, no moves needed.", alreadyCorrectCount, indexTypeTargets.size());
     this.expungeOldIndices();
     return true;
   }