SVG with S3 AWS bucket

Question

We have a client where we implement the solution in AWS with tridion 2013. We have SVG implementation by using custom multimedia types (https://docs.sdl.com/LiveContent/content/en-US/SDL%20Web-v5/GUID-C171DEE7-0F1F-45EF-ACD6-7A9C5498925C ) . So, when you add a svg content, tridion is configured to set the MIME type as image/svg+xml. Having said that, when the content is uploaded into S3 bucket of AWS, the content-type seems to be application/octet-stream (the default one). So, in turn when getting used in the page, the svg content are not getting rendered in chrome and firefox, because the content-type is not image/svg+xml. We have to manually go and update the content type in the S3 bucket to image/svg+xml.
Any ideas, any hints to be tried?

We have already tried the following.
1. S3 bucket upload rules are forced to enforce image/svg+xml as content-type header for svg files. -- Still No luck.

2. Ensure xml declarations are available on SVG file. -- Still no luck.

Thanks, Rams

Answer 1

I have done something similar maybe this below reference code snippet might help you.

public static String getMimeType(String fileName) {
        FileNameMap fileNameMap = URLConnection.getFileNameMap();
        String mimeType = fileNameMap.getContentTypeFor(fileName);
        return mimeType;
    }

public void addBinaries(ConcurrentHashMap<String, BinaryIndexData> binaryAdds) throws AmazonClientException, IOException, ParserConfigurationException {

        getS3Client();

        if (amazonS3 == null)
        {
            throw new AmazonClientException("AWS server not instantiated.");
        }

        for (Map.Entry<String, BinaryIndexData> entry : binaryAdds.entrySet())
        {
            BinaryIndexData data = entry.getValue();

            LOG.debug("Dispatching binary content to AWS S3.");
            String fileName = data.getRelativePath();
            String contentType = Utils.getMimeType(data.getFileName());

            InputStream inputBinaryStream = new ByteArrayInputStream(data.getContent().getContent());
            ObjectMetadata objMeta = new ObjectMetadata();
            objMeta.setContentEncoding("UTF-8");
            objMeta.setContentLength(data.getContent().getContent().length);
            if (contentType != null) {
                objMeta.setContentType(contentType);
            }
           objMeta.addUserMetadata("tcmuri",data.getUniqueIndexId());

            if (amazonS3 != null) {
                amazonS3.putObject(new PutObjectRequest(
                        bucketName, fileName, inputBinaryStream, objMeta)
                        .withCannedAcl(CannedAccessControlList.PublicRead));
                LOG.info("addBinaryObject: Upload complete " + fileName);

            }
            else {
                LOG.error("addBinaryObject: Upload can't be done amazonS3 null " + fileName);
            }
        }
    }