Erik Ebert created JCLOUDS-1580:
-----------------------------------
Summary: BlobStore.blobMetadata().getUserMetadata() returns empty
Map when cloud provider returns lowercase metadata headers
Key: JCLOUDS-1580
URL: https://issues.apache.org/jira/browse/JCLOUDS-1580
Project: jclouds
Issue Type: Bug
Components: jclouds-blobstore
Affects Versions: 2.3.0
Reporter: Erik Ebert
I believe this is happening because jclouds/swift is specifically looking for
user metadata with the prefix "X-Object-Meta-", case SENSITIVE:
X-Object-Meta-foo
But since header names are case-INSENSITIVE. per RFC 2616, this fails if the
cloud provider returns header names in lower case:
x-object-meta-foo
I discovered this while using "openstack-swift" to access SAP's Converged
Cloud, but it would affect any cloud provider that returns lower-case header
names.
In my case, this is an example of what is returned by Converged Cloud:
curl <object url> --head -H "X-Auth-Token:<token>"
HTTP/1.1 200 OK
content-type: application/octet-stream
*x-object-meta-original-created-time*: 1623984822180
*x-object-meta-content-md5*: rREHajOaHzUiU8DQoap9NA==
etag: xxxxx
last-modified: Fri, 18 Jun 2021 02:53:53 GMT
x-timestamp: 1623984832.86825
accept-ranges: bytes
content-length: 12
x-trans-id: xxxx
x-openstack-request-id: xxxxx
date: Fri, 18 Jun 2021 03:16:46 GMT
Sample jclouds code:
{code:java}
BlobStoreContext blobStoreContext =
ContextBuilder.newBuilder(PROVIDER)
.endpoint(ENDPOINT)
.credentials(INDENTITY, CREDENTIAL)
.overrides(overrides)
.buildApi(BlobStoreContext.class);
BlobStore blobStore = blobStoreContext.getBlobStore();
BlobMetadata blobMetadata = blobStore.blobMetadata(CONTAINER, PATH);
Map<String, String> userMetadata = blobMetadata.getUserMetadata()
System.out.println(userMetadata.toString())
{code}
blobMetadata.getUserMetadata() SHOULD return something like:
*original-created-time*: 1623984822180
*content-md5*: rREHajOaHzUiU8DQoap9NA==
(or similar), but instead it returns an empty Map object.
Stepping through the code, I believe the source of the problem is line 41 of
EntriesWithoutMetaPrefix.java:
[https://github.com/apache/jclouds/blob/0b89ee0825d45de1193090cdd5efc5f1135fa200/apis/openstack-swift/src/main/java/org/jclouds/openstack/swift/v1/functions/EntriesWithoutMetaPrefix.java]
Partial stack trace from the code example above:
{code:java}
at
org.jclouds.openstack.swift.v1.functions.EntriesWithoutMetaPrefix.apply(EntriesWithoutMetaPrefix.java:41)
at
org.jclouds.openstack.swift.v1.functions.ParseObjectFromResponse.apply(ParseObjectFromResponse.java:81)
at
org.jclouds.openstack.swift.v1.functions.ParseObjectFromResponse.apply(ParseObjectFromResponse.java:41)
at
org.jclouds.rest.internal.InvokeHttpMethod.invoke(InvokeHttpMethod.java:91)
at org.jclouds.rest.internal.InvokeHttpMethod.apply(InvokeHttpMethod.java:74)
at org.jclouds.rest.internal.InvokeHttpMethod.apply(InvokeHttpMethod.java:45)
at
org.jclouds.reflect.FunctionalReflection$FunctionalInvocationHandler.handleInvocation(FunctionalReflection.java:117)
at
com.google.common.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:86)
at com.sun.proxy.$Proxy199.getWithoutBody(Unknown Source:-1)
{code}
I believe the fix would be to change line 41 of EntriesWithoutMetaPrefix.java
from
int index = header.getKey().indexOf("-Meta-");
to something like:
int index = header.getKey()*.toLowerCase()*.indexOf("*-meta-*");
{code:java}
41c41
< int index = header.getKey().indexOf("-Meta-");
---
> int index = header.getKey().toLowerCase().indexOf("-meta-");
{code}
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