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CAOM-2.3 utils

Project description

caom2utils
=========

.. image:: https://img.shields.io/pypi/v/caom2utils.svg
:target: https://pypi.python.org/pypi/caom2utils

Utilities to facililate working with the CAOM2 model.

Observation Validation
---------------------

Validates a CAOM2 element (Observation, Plane, Artifact, Part or Chunk) with respect to the attributes of the element and possibly all its sub-elements. Example of validations: attribute values, spherical geometry of planes, WCS of chuncks, etc.

.. code:: python

from __future__ import (absolute_import, division, print_function,
unicode_literals)
import sys
from caom2 import SimpleObservation
import caom2utils

obs = SimpleObservation('collection', 'observationID')

# change and update obs

try:
caom2utils.validate(obs)
except Exception:
print('My exception is not valid')


Observation Generation
======================

There are two command-line applications that will generate a CAOM2 Observation in this package. fits2caom2 assumes legacy operations, and should be a not-quite replacement for the Java application. caom2gen provides a bit different invocation mechanism, relying on blueprints for configuration information, and specifies the cardinality of the Observation/Plane/Artifact combinations at the command line.


fits2caom2
----------

usage: fits2caom2 [-h] [--cert CERT | -n | --netrc-file NETRC_FILE | -u USER]
[--host HOST] [--resource-id RESOURCE_ID] [-d | -q | -v]
[-V] [--dumpconfig] [--no_validate]
[-o OUT_OBS_XML]
(-i IN_OBS_XML | --observation collection observationID)
[--local LOCAL [LOCAL ...]] [--keep] [--test]
[--productID PRODUCTID] [--config CONFIG]
[--default DEFAULT] [--override OVERRIDE]
fileURI [fileURI ...]

Augments an observation with information in one or more fits files.

positional arguments:
fileURI URI of a fits file

optional arguments:
--cert CERT location of your X509 certificate to use for
authentication (unencrypted, in PEM format)
--config CONFIG optional CAOM2 utype to keyword config file to merge
with the internal configuration
-d, --debug debug messages
--default DEFAULT file with default values for keywords
--dumpconfig output the utype to keyword mapping to the console
-h, --help show this help message and exit
--host HOST base hostname for services - used mainly for testing
(default: www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca)
-i, --in IN_OBS_XML input of observation to be augmented in XML
--keep keep the locally stored files after ingestion
--local LOCAL [ LOCAL ...]
list of files in local filesystem (same order as uri)
-n use .netrc in $HOME for authentication
--netrc-file NETRC_FILE
netrc file to use for authentication
--no_validate by default, the application will validate the WCS
information for an observation. Specifying this flag
skips that step.
--observation collection observationID
observation in a collection
-o, --out OUT_OBS_XML output of augmented observation in XML
--override OVERRIDE file with override values for keywords
--productID PRODUCTID product ID of the plane in the observation
-q, --quiet run quietly
--resource-id RESOURCE_ID resource identifier (default
ivo://cadc.nrc.ca/fits2caom2)
--test test mode, do not persist to database
-u, --user USER name of user to authenticate. Note: application
prompts for the corresponding password!
-v, --verbose verbose messages
-V, --version show program's version number and exit


caom2gen
--------

usage: caom2gen [-h] [--cert CERT | -n | --netrc-file NETRC_FILE | -u USER]
[--host HOST] [--resource-id RESOURCE_ID] [-d | -q | -v] [-V]
[--dumpconfig] [--no_validate]
[-o OUT_OBS_XML]
(-i IN_OBS_XML | --observation collection observationID)
[--local LOCAL [LOCAL ...]] [--keep] [--test]
[--module MODULE] [--plugin PLUGIN]
[--lineage LINEAGE [LINEAGE ...]] --blueprint BLUEPRINT
[BLUEPRINT ...]

Augments an observation with information in one or more fits files.

optional arguments:
--blueprint BLUEPRINT [BLUEPRINT ...]
list of files with blueprints for CAOM2 construction,
in serialized format. If the list is of length 1, the
same blueprint will be applied to all lineage entries.
Otherwise, there must be a blueprint file per lineage
entry.
--cert CERT location of your X509 certificate to use for
authentication (unencrypted, in PEM format)
-d, --debug debug messages
--dumpconfig output the utype to keyword mapping to the console
-h, --help show this help message and exit
--host HOST base hostname for services - used mainly for testing
(default: www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca)
-i, --in IN_OBS_XML input of observation to be augmented in XML
--keep keep the locally stored files after ingestion
--lineage LINEAGE [LINEAGE ...]
productID/artifactURI. List of plane/artifact
identifiers that will becreated for the identified
observation.
--local LOCAL [LOCAL ...]
list of files in local filesystem (same order as uri)
--module MODULE if the blueprint contains function calls, call
importlib.import_module for the named module. Provide
a fully qualified name. Parameter choices are the
artifact URI (uri) or a list of astropy Header
instances (header). This will allow the update of a
single blueprint entry with a single call.
-n use .netrc in $HOME for authentication
--netrc-file NETRC_FILE
netrc file to use for authentication
--no_validate by default, the application will validate the WCS
information for an observation. Specifying this flag
skips that step.
--observation collection observationID
observation in a collection
-o, --out OUT_OBS_XML
output of augmented observation in XML
--plugin PLUGIN if this parameter is specified, call
importlib.import_module for the named module. Then
execute the method "update", with the signature
(Observation, **kwargs). This will allow for the
update of multiple observation data members with one
call.
-q, --quiet run quietly
--resource-id RESOURCE_ID
resource identifier (default
ivo://cadc.nrc.ca/fits2caom2)
--test test mode, do not persist to database
-u, --user USER name of user to authenticate. Note: application
prompts for the corresponding password!
-v, --verbose verbose messages
-V, --version show program's version number and exit

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