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Metadata Extraction
*******************
If `datalad-metalad`_ extension is installed, `datalad-container` can
extract metadata from singularity containers images.
(It is recommended to use a tool like `jq` if you would like to read the
output yourself.)
Singularity Inspect
-------------------
Adds metadata gathered from `singularity inspect` and the version of
`singularity` or `apptainer`.
For example:
(From the ReproNim/containers repository)
`datalad meta-extract -d . container_inspect images/bids/bids-pymvpa--1.0.2.sing | jq`
.. code-block::
{
"type": "file",
"dataset_id": "b02e63c2-62c1-11e9-82b0-52540040489c",
"dataset_version": "9ed0a39406e518f0309bb665a99b64dec719fb08",
"path": "images/bids/bids-pymvpa--1.0.2.sing",
"extractor_name": "container_inspect",
"extractor_version": "0.0.1",
"extraction_parameter": {},
"extraction_time": 1680097317.7093463,
"agent_name": "Austin Macdonald",
"agent_email": "austin@dartmouth.edu",
"extracted_metadata": {
"@id": "datalad:SHA1-s993116191--cc7ac6e6a31e9ac131035a88f699dfcca785b844",
"type": "file",
"path": "images/bids/bids-pymvpa--1.0.2.sing",
"content_byte_size": 0,
"comment": "SingularityInspect extractor executed at 1680097317.6012993",
"container_system": "apptainer",
"container_system_version": "1.1.6-1.fc37",
"container_inspect": {
"data": {
"attributes": {
"labels": {
"org.label-schema.build-date": "Thu,_19_Dec_2019_14:58:41_+0000",
"org.label-schema.build-size": "2442MB",
"org.label-schema.schema-version": "1.0",
"org.label-schema.usage.singularity.deffile": "Singularity.bids-pymvpa--1.0.2",
"org.label-schema.usage.singularity.deffile.bootstrap": "docker",
"org.label-schema.usage.singularity.deffile.from": "bids/pymvpa:v1.0.2",
"org.label-schema.usage.singularity.version": "2.5.2-feature-squashbuild-secbuild-2.5.6e68f9725"
}
}
},
"type": "container"
}
}
}
.. _datalad-metalad: http://docs.datalad.org/projects/metalad/en/latest/
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