devmadhuu commented on code in PR #11229:
URL: https://github.com/apache/ozone/pull/11229#discussion_r4119636546
##########
hadoop-ozone/s3gateway/src/main/java/org/apache/hadoop/ozone/s3/util/S3Consts.java:
##########
@@ -131,6 +131,11 @@ public final class S3Consts {
/** Request header carrying the list of object attributes to return. */
public static final String OBJECT_ATTRIBUTES_HEADER =
"x-amz-object-attributes";
+ // S3 storage class values passed via the `x-amz-storage-class` request
header.
+ public static final String S3_STORAGE_CLASS_STANDARD = "STANDARD";
+ public static final String S3_STORAGE_CLASS_STANDARD_IA = "STANDARD_IA";
+ public static final String S3_STORAGE_CLASS_GLACIER = "GLACIER";
+
Review Comment:
@F64116045 Yes, agreed. After combining the mappings, the reverse lookup
should use both `ReplicationConfig` and `StoragePolicy`, since HOT alone cannot
distinguish `REDUCED_REDUNDANCY` from `STANDARD`. `COLD` uniquely identifies
`GLACIER`, so null is not needed. In the follow-up S3 write PR, the PUT path
will use this unified mapping to resolve both values from the same
`x-amz-storage-class` header—for example, `GLACIER` will map to `RATIS` `THREE`
and `COLD`. I’ll update the enum and tests accordingly. So I am trying to
propose below enum structure :
```
REDUCED_REDUNDANCY(
RatisReplicationConfig.getInstance(ReplicationFactor.ONE),
OzoneStoragePolicy.HOT),
STANDARD(
RatisReplicationConfig.getInstance(ReplicationFactor.THREE),
OzoneStoragePolicy.HOT),
STANDARD_IA(
new ECReplicationConfig(3, 2),
OzoneStoragePolicy.WARM),
GLACIER(
RatisReplicationConfig.getInstance(ReplicationFactor.THREE),
OzoneStoragePolicy.COLD);
```
Kindly advise.
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