Laurent's aspera-python

Tested with Python3.

This project provides a small library and examples to use some IBM Aspera APIs and transfer files for various products in python.

The library files in src:

• allow starting a stransfer with the legacy "FaspManager" using transfer_spec instead of the basic API.
• get Node api credentials for COS (2 methods)

The sample code in examples show how to transfer files using:

• IBM Aspera HSTS using SSH credentials
• IBM Aspera HSTS using Node credentials
• IBM Cloud Object Storage (COS) using IBM Cloud service credentials
• IBM Aspera Faspex

TransferSDK versus FaspManager

Note that the examples use the older "FASPManager" API to start transfer, but they use the transfer_spec structure. The module faspmanager_help translates the transfer_spec into the FaspManager structure.

Because they use transfer_spec, the examples can be modified easily to use the newer Transfer SDK. Note that currently the TransferSDK only supports: Windows, Linux and MacOS. If you use one of those supported platform, prefer to use TransferSDK, else use the older FaspManager API (it is pure python).

All IBM Aspera APIs: https://api.ibm.com/explorer/catalog/aspera/product/ibm-aspera/doc/overview

Structure of examples

Each of the example code is strutured like this:

• import setup setup.py is located in the same folder as the example , it reads the configuration file and setup debug logging
• import faspmanager the faspmanager folder contains IBM Aspera's FaspManager for python
• import faspmanager_helper located in src this translates transfer_spec into FaspManager structure.
• get secrets from setup.CONFIG

Get ascp for your platform

You can get the necessary ascp and aspera-license executable from the TransferSDK or the free IBM Aspera Desktop Client ( Release Notes ).

As of version 3.9.6.1, the following platforms are supported:

• Windows 64 bit
• MacOS
• Linux x86_64
• PowerLinux ppc64-le
• zLinux s390, 64-bit
• AIX
• Solaris x86
• Solaris sparc
• Isilon 8

From the installed software extract ascp and aspera-license.

If you dont find your platform, check the IBM Aspera High Speed Transfer Server ( Release Notes ).

A proper HSTS installation with license file works as well.

Pepare python 3

Install packages used by examples:

$ pip3 install requests PyYAML

Retrieve IBM Aspera FaspManager for python

Get the FaspManager package for python: IBM Aspera FASPManager for python

$ mkdir $HOME/aspera_sdk_python
$ cd $HOME/aspera_sdk_python
$ wget http://download.asperasoft.com/download/sw/sdk/faspmanager/python/faspmanager-sdk-python-3.7.2-d787953b521f059412ad1713afaa38ccbb760a47.zip
$ unzip *.zip
$ find . -type d
.
./tests
./examples
./faspmanager

COS service credentials

To test transfers to COS, you will need:

• bucket name
• storage endpoint
• api key
• crn
• auth endpoint

This is the default in the example.

Or, it is also possible to use:

• bucket name
• region
• service credentials: create the file private/service_creds.json, follow: get service credentials

For this swap the commented lines in cos.py.

Create the configuration file for examples

Create the folder private and then the file private/config.yaml :

---
  faspmanager: /home/laurent
  faspex:
    url: https://faspex.fqdn.or.ip/aspera/faspex
    user: faspex_username
    pass: the_password
  node:
    url: https://hsts.fqdn.or.ip:9092
    user: node_user
    pass: the_password
  cos:
    bucket: lolo-de
    endpoint: https://s3.eu-de.cloud-object-storage.appdomain.cloud
    key: Abc1233ffjklqshfkjdlsq
    crn: 'crn:v1:bluemix:public:cloud-object-storage:global:a/jhfklsddhfsqkldd:iofpqs::'
    auth: https://iam.cloud.ibm.com/identity/token
  coscreds:
    bucket: lolo-de
    service_credential_file: private/service_creds.json
    region: eu-de

The parameter faspmanager is set to the folder that contains the faspmanager folder from the original IBM Aspera Faspmanager for python.

For COS use the parameters from section cos (default).

Optionally, comment/uncomment the appropriate line in cos.py and use section coscreds

Execute examples

$ make

Or simply the sample code you want and provide one argument: path to a file to send:

$ truncate --size=1G bigfile.bin
$ ./examples/node.py bigfile.bin

Modify examples

Start by copying one of the example.

Remove the line import setup

add lines at the beginning to tell where libs are:

import sys
sys.path.insert(1, 'path to src folder')
sys.path.insert(1, 'path to folder containing faspmanager')

remove sys.argv and replace with your list of files:

files_to_upload=['myfile.bin']

delete the line containing setup.CONFIG

replaces parameters config['param_name'] with actual values

That's it you have a standlone script.

Happy transfers with IBM Aspera !