Method S3Exec

manager/src/main/java/server/LucianCommands.java:187–213

(AmazonS3Client s3Client, int sid, String key, String cmd)

    }

    private String S3Exec(AmazonS3Client s3Client, int sid, String key, String cmd) {
        com.amazonaws.services.s3.model.CopyObjectRequest request =
                new com.amazonaws.services.s3.model.CopyObjectRequest(bucketname, key, bucketname, key);

        String metainfo = (String) sessionsList.get(sid - 1).get(1);

        com.amazonaws.services.s3.model.ObjectMetadata meta = new com.amazonaws.services.s3.model.ObjectMetadata();
        meta.addUserMetadata("cmd", cmd);
        meta.addUserMetadata("info", metainfo);
        request.setNewObjectMetadata(meta);
        s3Client.copyObject(request);

        int trySum = 0;
        while (trySum < 40) {
            trySum++;
            try {
                Thread.sleep(1000);
                String res = readS3Res(key, s3Client);
                if (res.contains("|") && res.contains("|" + cmd + "|")) {
                    return res;
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        return "no result";
    }

    private String readS3Res(String key, AmazonS3Client s3Client) {
        StringBuffer sb = new StringBuffer("");