Zenoss: Make control center service definitions more appropriate for ZenPack development.

devinate-template

#!/usr/bin/env python

"""devinate-template (a.k.a. developinate-template)

This script can be used to take an existing Zenoss serviced service
definition and modify it to be more appropriate for a slimmed-down
ZenPack development environment. A compiled Zenoss serviced service
definition is expected on STDIN, and the modified service definition
will be written to STDOUT.

Currently the following changes are made to the input template.

    * Append ".develop" to app and top level service names.
    * Change launch mode from auto to manual for all collector services.
    * Reduce Zope minimum and default instances to 1.

Example usage:

    serviced template list \
        $(serviced template list|grep Zenoss.core|awk '{print $1}') \
        | devinate-template \
        | serviced template add

"""

__version__ = "1.0"

import json
import sys

collector_services = [
    'zencommand',
    'zenmodeler',
    'zenperfsnmp',
    'zenping',
    'zenprocess',
    'zenpython',
    'zenstatus',
    'zensyslog',
    'zentrap',
    'zenmodeletl',
    'zeneventetl',
    'zenperfetl',
    'zenjmx',
    'zenjserver',
    'zenvsphere',
    'zenucsevents',
    'zenpropertymonitor',
    ]


def matching_services(service, names):
    """Recursively generate services in service where "Name" is in names."""
    name = service.get('Name')
    if name in names:
        yield service

    for subservice in service.get('Services') or []:
        for matching_subservice in matching_services(subservice, names):
            yield matching_subservice


def main():
    json_lines = []
    for line in sys.stdin.readlines():
        if line.startswith('This master has been configured to be in pool:'):
            continue

        json_lines.append(line)

    try:
        app = json.loads('\n'.join(json_lines))
    except KeyboardInterrupt:
        sys.exit(1)

    top_service = app['Services'][0]
    new_name = '{}.develop'.format(app['Name'])
    app['Name'] = new_name
    top_service['Name'] = new_name

    for service in matching_services(app, ['Zope']):
        service['Instances']['Min'] = 1
        service['Instances']['Default'] = 0

    for service in matching_services(app, collector_services):
        if 'Launch' in service:
            service['Launch'] = 'manual'

    print json.dumps(app)


if __name__ == '__main__':
    main()