private void removeResponseBody(BaseMessage msg, MappingHttpResponse httpResponse) {
// Populate all the common fields. These fields normally get populated in the outbound stage of
// the parent handler but get skipped in this case due to
// an empty message body
httpResponse.setHeader(
HttpHeaders.Names.DATE, DateFormatter.dateToHeaderFormattedString(new Date()));
httpResponse.setHeader(HttpHeaders.Names.CONTENT_LENGTH, String.valueOf(0));
if (msg.getCorrelationId() != null) {
httpResponse.setHeader(ObjectStorageProperties.AMZ_REQUEST_ID, msg.getCorrelationId());
}
// Null the message body to remove it
httpResponse.setMessage(null);
}
@Override
public void outgoingMessage(ChannelHandlerContext ctx, MessageEvent event) throws Exception {
if (event.getMessage() instanceof MappingHttpResponse) {
MappingHttpResponse httpResponse = (MappingHttpResponse) event.getMessage();
BaseMessage msg = (BaseMessage) httpResponse.getMessage();
// Ordering if-else conditions from most to least restrictive i.e. narrow to broad filters
if (msg instanceof PostObjectResponseType) {
PostObjectResponseType postObjectResponse = (PostObjectResponseType) msg;
String redirectUrl = postObjectResponse.getRedirectUrl();
if (redirectUrl != null) {
httpResponse.addHeader(HttpHeaders.Names.LOCATION, redirectUrl);
httpResponse.setStatus(HttpResponseStatus.SEE_OTHER);
httpResponse.setMessage(null);
} else {
Integer successCode = postObjectResponse.getSuccessCode();
if (successCode != null) {
if (successCode != 201) {
httpResponse.setMessage(null);
httpResponse.setStatus(new HttpResponseStatus(successCode, "OK"));
} else {
httpResponse.setStatus(new HttpResponseStatus(successCode, "Created"));
}
}
}
// have to force a close for browsers
event.getFuture().addListener(ChannelFutureListener.CLOSE);
} else if (msg instanceof CopyObjectResponseType) {
CopyObjectResponseType copyResponse = (CopyObjectResponseType) msg;
if (copyResponse.getVersionId() != null)
httpResponse.addHeader("x-amz-version-id", copyResponse.getVersionId());
if (copyResponse.getCopySourceVersionId() != null)
httpResponse.addHeader(
"x-amz-copy-source-version-id", copyResponse.getCopySourceVersionId());
} else if (msg instanceof CreateBucketResponseType) {
httpResponse.setStatus(HttpResponseStatus.OK);
removeResponseBody(msg, httpResponse);
event.getFuture().addListener(ChannelFutureListener.CLOSE);
} else if (msg
instanceof ObjectStorageDataResponseType) { // Filter for GETs and PUTs related to data
ObjectStorageDataResponseType response = (ObjectStorageDataResponseType) msg;
if (response.getEtag() != null) {
httpResponse.setHeader(HttpHeaders.Names.ETAG, '\"' + response.getEtag() + '\"');
}
if (response.getVersionId() != null) {
httpResponse.setHeader(ObjectStorageProperties.X_AMZ_VERSION_ID, response.getVersionId());
}
if (msg instanceof ObjectStorageDataGetResponseType && response.getLastModified() != null) {
httpResponse.setHeader(
HttpHeaders.Names.LAST_MODIFIED,
DateFormatter.dateToHeaderFormattedString(response.getLastModified()));
}
// Remove the content in response for certain operations
if (msg instanceof PutObjectResponseType || msg instanceof UploadPartResponseType) {
removeResponseBody(msg, httpResponse);
}
} else if (msg
instanceof ObjectStorageResponseType) { // Filter for GETs and PUTs *NOT* related to data
// Remove the content in response for certain operations
if (msg instanceof SetBucketAccessControlPolicyResponseType
|| msg instanceof SetBucketLifecycleResponseType
|| msg instanceof SetBucketLoggingStatusResponseType
|| msg instanceof SetBucketVersioningStatusResponseType
|| msg instanceof SetObjectAccessControlPolicyResponseType
|| msg instanceof SetBucketTaggingResponseType) {
if (msg instanceof SetObjectAccessControlPolicyResponseType
&& ((SetObjectAccessControlPolicyResponseType) msg).getVersionId() != null) {
httpResponse.setHeader(
ObjectStorageProperties.X_AMZ_VERSION_ID,
((SetObjectAccessControlPolicyResponseType) msg).getVersionId());
}
// Moved the below logic to the actual operation in ObjectStorageGateway.java.
/*// AWS returns in a 204, rather than a 200 like other requests for SetBucketTaggingResponseType
if ( msg instanceof SetBucketTaggingResponseType ) {
httpResponse.setStatus( HttpResponseStatus.NO_CONTENT );
}*/
removeResponseBody(msg, httpResponse);
}
}
}
}