caom2repo 1.6.4

CAOM-2.4 repo access and tools

Client caom2-repo

caom2Repo provides a client (caom2-repo) to perform CRUD (Create, Read, Update, Delete) on an observation in a collection in a repository.

Visitor Plugin

The client also provides a visitor function which accepts a plugin. The visitor function iterates the observations of a collection and updates them according to the algorithm of the plugin function. The following is an example plugin to add a ‘PREVIEW’ Plane to an observation. More plugin examples can be found in caom2repo/tests/.

from __future__ import (absolute_import, division, print_function,
                        unicode_literals)

from caom2.observation import Observation
from caom2.plane import Plane


class ObservationUpdater(object):
    """ObservationUpdater that adds a plane to the observation."""

    def update(self, observation, **kwargs):
        """
        Processes an observation and updates it
        """
        assert isinstance(observation, Observation), (
            "observation %s is not an Observation".format(observation))
        observation.planes.add(Plane('PREVIEW'))