java - AWS Lambda: How to extract a tgz file in a S3 bucket and put it in another S3 bucket -

i have s3 bucket named "source". many '.tgz' files being pushed bucket in real-time. wrote java code extracting '.tgz' file , pushing "destination" bucket. pushed code lambda function. got '.tgz' file inputstream in java code. how extract in lambda ? i'm not able create file in lambda, throws "filenotfound(permission denied)" in java.

amazons3 s3client = new amazons3client(); s3object s3object = s3client.getobject(new getobjectrequest(srcbucket, srckey)); inputstream objectdata = s3object.getobjectcontent(); file file = new file(s3object.getkey()); outputstream writer = new bufferedoutputstream(new fileoutputstream(file)); <--- throws filenotfound(permission denied) here 

don't use file or fileoutputstream, use s3client.putobject(). read tgz file, can use apache commons compress. example:

archiveinputstream tar = new archiveinputstreamfactory().     createarchiveinputstream("tar", new gzipinputstream(objectdata)); archiveentry entry; while ((entry = tar.getnextentry()) != null) {     if (!entry.isdirectory()) {         byte[] objectbytes = new byte[entry.getsize()];         tar.read(objectbytes);         objectmetadata metadata = new objectmetadata();         metadata.setcontentlength(objectbytes.length);         metadata.setcontenttype("application/octet-stream");         s3client.putobject(destbucket, entry.getname(),              new bytearrayinputstream(objectbytes), metadata);     } }