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SKA SDP Configuration Database

Project description

Configuration Database

This is the frontend module for accessing SKA SDP configuration information. It provides ways for SDP controller and processing components to discover and manipulate the intended state of the system.

At the moment this is implemented on top of etcd, a highly-available database. This library provides primitives for atomic queries and updates to the stored configuration information.


Install from PyPI:

pip install ska-sdp-config

Basic Usage

Make sure you have a database backend accessible (etcd3 is supported at the moment). Location can be configured using the SDP_CONFIG_HOST and SDP_CONFIG_PORT environment variables. The defaults are and 2379, which should work with a local etcd started without any configuration.

This should give you access to SDP configuration information, for instance try:

import ska_sdp_config

config = ska_sdp_config.Config()

for txn in config.txn():
    for pb_id in txn.list_processing_blocks():
        pb = txn.get_processing_block(pb_id)
        print("{} ({}:{})".format(pb_id, pb.workflow['id'], pb.workflow['version']))

To read a list of currently active processing blocks with their associated workflows.

Command line

This package also comes with a command line utility for easy access to configuration data. For instance run:

sdpcfg list values /pb/

To query all processing blocks.

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