Simplify BlobStoreRepository Constructor (#40653)

* Thanks to #39346 we can simplify the logic here some more, now that compress is a `final` field

Author: original-brownbear

plugins/repository-s3/src/main/java/org/elasticsearch/repositories/s3/S3Repository.java

@@ -157,8 +157,6 @@ class S3Repository extends BlobStoreRepository {
 
     private final String cannedACL;
 
-    private final RepositoryMetaData repositoryMetaData;
-
     /**
      * Constructs an s3 backed repository
      */
@@ -169,8 +167,6 @@ class S3Repository extends BlobStoreRepository {
         super(metadata, settings, namedXContentRegistry);
         this.service = service;
 
-        this.repositoryMetaData = metadata;
-
         // Parse and validate the user's S3 Storage Class setting
         this.bucket = BUCKET_SETTING.get(metadata.settings());
         if (bucket == null) {
@@ -216,7 +212,7 @@ class S3Repository extends BlobStoreRepository {
 
     @Override
     protected S3BlobStore createBlobStore() {
-        return new S3BlobStore(service, bucket, serverSideEncryption, bufferSize, cannedACL, storageClass, repositoryMetaData);
+        return new S3BlobStore(service, bucket, serverSideEncryption, bufferSize, cannedACL, storageClass, metadata);
     }
 
     // only use for testing

server/src/main/java/org/elasticsearch/repositories/blobstore/BlobStoreRepository.java

@@ -162,8 +162,6 @@ public abstract class BlobStoreRepository extends AbstractLifecycleComponent imp
 
     protected final RepositoryMetaData metadata;
 
-    protected final NamedXContentRegistry namedXContentRegistry;
-
     private static final int BUFFER_SIZE = 4096;
 
     private static final String SNAPSHOT_PREFIX = "snap-";
@@ -213,11 +211,11 @@ public abstract class BlobStoreRepository extends AbstractLifecycleComponent imp
 
     private final CounterMetric restoreRateLimitingTimeInNanos = new CounterMetric();
 
-    private ChecksumBlobStoreFormat<MetaData> globalMetaDataFormat;
+    private final ChecksumBlobStoreFormat<MetaData> globalMetaDataFormat;
 
-    private ChecksumBlobStoreFormat<IndexMetaData> indexMetaDataFormat;
+    private final ChecksumBlobStoreFormat<IndexMetaData> indexMetaDataFormat;
 
-    private ChecksumBlobStoreFormat<SnapshotInfo> snapshotFormat;
+    private final ChecksumBlobStoreFormat<SnapshotInfo> snapshotFormat;
 
     private final boolean readOnly;
 
@@ -240,17 +238,21 @@ protected BlobStoreRepository(RepositoryMetaData metadata, Settings settings,
                                   NamedXContentRegistry namedXContentRegistry) {
         this.settings = settings;
         this.metadata = metadata;
-        this.namedXContentRegistry = namedXContentRegistry;
         this.compress = COMPRESS_SETTING.get(metadata.settings());
         snapshotRateLimiter = getRateLimiter(metadata.settings(), "max_snapshot_bytes_per_sec", new ByteSizeValue(40, ByteSizeUnit.MB));
         restoreRateLimiter = getRateLimiter(metadata.settings(), "max_restore_bytes_per_sec", new ByteSizeValue(40, ByteSizeUnit.MB));
         readOnly = metadata.settings().getAsBoolean("readonly", false);
 
-
         indexShardSnapshotFormat = new ChecksumBlobStoreFormat<>(SNAPSHOT_CODEC, SNAPSHOT_NAME_FORMAT,
             BlobStoreIndexShardSnapshot::fromXContent, namedXContentRegistry, compress);
         indexShardSnapshotsFormat = new ChecksumBlobStoreFormat<>(SNAPSHOT_INDEX_CODEC, SNAPSHOT_INDEX_NAME_FORMAT,
             BlobStoreIndexShardSnapshots::fromXContent, namedXContentRegistry, compress);
+        globalMetaDataFormat = new ChecksumBlobStoreFormat<>(METADATA_CODEC, METADATA_NAME_FORMAT,
+            MetaData::fromXContent, namedXContentRegistry, compress);
+        indexMetaDataFormat = new ChecksumBlobStoreFormat<>(INDEX_METADATA_CODEC, METADATA_NAME_FORMAT,
+            IndexMetaData::fromXContent, namedXContentRegistry, compress);
+        snapshotFormat = new ChecksumBlobStoreFormat<>(SNAPSHOT_CODEC, SNAPSHOT_NAME_FORMAT,
+            SnapshotInfo::fromXContentInternal, namedXContentRegistry, compress);
     }
 
     @Override
@@ -259,12 +261,6 @@ protected void doStart() {
         if (chunkSize != null && chunkSize.getBytes() <= 0) {
             throw new IllegalArgumentException("the chunk size cannot be negative: [" + chunkSize + "]");
         }
-        globalMetaDataFormat = new ChecksumBlobStoreFormat<>(METADATA_CODEC, METADATA_NAME_FORMAT,
-            MetaData::fromXContent, namedXContentRegistry, compress);
-        indexMetaDataFormat = new ChecksumBlobStoreFormat<>(INDEX_METADATA_CODEC, METADATA_NAME_FORMAT,
-            IndexMetaData::fromXContent, namedXContentRegistry, compress);
-        snapshotFormat = new ChecksumBlobStoreFormat<>(SNAPSHOT_CODEC, SNAPSHOT_NAME_FORMAT,
-            SnapshotInfo::fromXContentInternal, namedXContentRegistry, compress);
     }
 
     @Override

server/src/main/java/org/elasticsearch/repositories/fs/FsRepository.java

@@ -63,7 +63,7 @@ public class FsRepository extends BlobStoreRepository {
         new ByteSizeValue(Long.MAX_VALUE), new ByteSizeValue(5), new ByteSizeValue(Long.MAX_VALUE), Property.NodeScope);
     private final Environment environment;
 
-    private ByteSizeValue chunkSize;
+    private final ByteSizeValue chunkSize;
 
     private final BlobPath basePath;