AWS Lambda function can't read my .bin files (Java)

Question

I wrote a program in Java and deployed it to AWS Lambda by creating a JAR file containing all the necessary files. My request handler calls a method that tries to create 4 new FileInputStreams, with .bin files as inputs, in a try-catch. For example: InputStream stream = new FileInputStream("random.bin"). However, it's going to the catch statement after trying to create the first one due to an IOException. I have my class files in src/main/java/package. I had the .bin files in the directory that contains the src folder, and I also tried putting them all in one folder, but that didn't resolve the problem. Very confused how to resolve this problem. It's also not working when I call to read in a text file, so it's not just limited to binaries. I was thinking of putting the binaries in my S3 bucket and somehow reading them from there, but I haven't found anything much online detailing how to do that in Java.

Thanks!

score 0 · Answer 1 · answered Sep 17 '18 at 15:04

0

Your jar puts files in different locations then what your expect. This question might offer so insight on how to correctly access files in the jar.

answered Sep 17 '18 at 15:04

Banjo Obayomi

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I tried most of the methods outlined in that post, but none of them worked for me. – Sukhpreet Pabla Sep 18 '18 at 06:12
what was the issue? – Banjo Obayomi Sep 18 '18 at 13:19

score -1 · Answer 2 · answered Sep 17 '18 at 12:41

-1

AWS Lambda only allow write access in the /tmp folder of your function's filesystem. Try changing your code to match this path and try again.

answered Sep 17 '18 at 12:41

GreatDharmatma

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AWS Lambda function can't read my .bin files (Java)

2 Answers2