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IBM Streams Cloud Object Storage integration

Project description


Provides functions to read objects from Cloud Object Storage as a stream and submit tuples to create objects in Cloud Object Storage (COS).

This package exposes the toolkit as Python methods for use with Streaming Analytics service on IBM Cloud and IBM Streams including IBM Cloud Private for Data.


A simple hello world example of a Streams application writing string messages to an object. Scan for created object on COS and read the content:

from streamsx.topology.topology import *
from streamsx.topology.schema import CommonSchema
from streamsx.topology.context import submit
import streamsx.objectstorage as cos

topo = Topology('ObjectStorageHelloWorld')

to_cos = topo.source(['Hello', 'World!'])
to_cos = to_cos.as_string()

# sample bucket with resiliency "regional" and location "us-south"
bucket = 'streamsx-py-sample'
# US-South region private endpoint

# Write a stream to COS
cos.write(to_cos, bucket, endpoint, '/sample/hw%OBJECTNUM.txt')

scanned = cos.scan(topo, bucket=bucket, endpoint=endpoint, directory='/sample')

# read text file line by line
r =, bucket=bucket, endpoint=endpoint)

# print each line (tuple)

# Use for IBM Streams including IBM Cloud Private for Data
# submit ('DISTRIBUTED', topo)

Project details

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