Attachment content is empty

Question

I have a boomi process which takes the file content and send it to salesforce to create attachment. But attachment is blank.

Here is my code:

String jsonStr = 'iVBORw0KGgoAAAANSUhEUgAABo4AAAMgCAYAAAAdtpBIAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAAFiUAABYlAUlSJPAAAP+lSURBVHhe7P15dFRXnub9qv6447p/9Fq3V+aq9d57q7vve7u6K7s6q1z9ZnWnszOd2W47M92Zdk52OT2nZ4zxANgYbAwGbAy2Gcw8GMw8g5kHM8/zIECMEgIJxCjmGf9uPFuxxVHElhQKhRQh6fhBBCCCGEEEIIIYQQQgghzSNVi6PnIx8TE7s9tAJCCCGEEEIIIYQQQgghhBDSPJL3b5//2v7tCxXT0bnPn';
Attachment attach = new Attachment();
attach.contentType = 'image/png';
attach.name = 'test.png';
attach.parentId = '0010H00002DW2Ds';
attach.body = EncodingUtil.base64Decode(jsonStr);
insert attach;

Attachment is inserted but there is no content inside. Is there anything I am doing wrong.

Thank you, Thiru

Answer 1

This file looks like a legitimate PNG file fragment when saved and downloaded. Reading through the file, we see:

tag	length	data
Magic	8	iVBORw0KGgo= // PNG HEADER
IHDR	13	Width = 1678, Height = 800, Bit Depth = 8, Color Type = 6, Compression Method = 0, Filter Method = 0, Interlace Method = 0
sRGB	1	0
gAMA	4	45455
pHYS	9	X = 5669, Y = 5669, Unit = Meters
IDAT	255	Pixel data 165 bytes long

Here the file trails off. There should be an IEND specifying the end of the image, but it doesn't exist. My conclusion is that the file is a fragment of what would be a valid PNG, but the rest of the file is missing.