b5355c46ac
This commit tweaks the excellent work from Gianluca in PR#1550 a little bit. Now that the container inputs are their own input type some of the code that used to be part of the original `inputs/org.osbuild.containers` can be simplified.
133 lines
3.2 KiB
Python
Executable file
133 lines
3.2 KiB
Python
Executable file
#!/usr/bin/python3
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"""Inputs for container images from the host storage
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This is an input that pairs with the org.osbuild.containers-storage
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source. It makes the host container storage available to a stage
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and a container ID for the stage to use.
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Unlike all the other input types, this does not refer to static
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objects in the osbuild sources store but a dynamically mounted
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container store that depends on the availability of the
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resource (the specific container) on the host.
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"""
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import os
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import sys
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from osbuild import inputs
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from osbuild.util import containers
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from osbuild.util.mnt import MountGuard
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SCHEMA = r"""
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"definitions": {
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"source-options": {
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"type": "object",
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"additionalProperties": false,
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"properties": {
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"name": {
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"type": "string",
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"description": "The name to use for the image"
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}
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}
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},
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"source-object-ref": {
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"type": "object",
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"additionalProperties": false,
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"minProperties": 1,
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"patternProperties": {
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".*": {
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"$ref": "#/definitions/source-options"
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}
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}
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},
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"source-array-ref": {
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"type": "array",
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"minItems": 1,
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"items": {
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"type": "object",
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"additionalProperties": false,
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"required": ["id"],
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"properties": {
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"id": {
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"type": "string"
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},
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"options": {
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"$ref": "#/definitions/source-options"
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}
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}
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}
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},
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"source-origin": {
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"type": "string",
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"description": "When the origin of the input is a source",
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"enum": ["org.osbuild.source"]
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}
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},
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"additionalProperties": false,
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"required": ["type", "origin", "references"],
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"properties": {
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"type": {
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"enum": ["org.osbuild.containers-storage"]
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},
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"origin": {
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"description": "The org.osbuild.source origin case",
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"$ref": "#/definitions/source-origin"
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},
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"references": {
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"description": "Container image id",
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"oneOf": [
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{"$ref": "#/definitions/source-array-ref"},
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{"$ref": "#/definitions/source-object-ref"}
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]
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}
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}
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"""
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class ContainersStorageInput(inputs.InputService):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.mg = MountGuard()
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self.storage_conf = containers.get_host_storage()
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def bind_mount_local_storage(self, target):
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source = self.storage_conf["storage"]["graphroot"]
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dest = os.path.join(target, "storage")
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# bind mount the input directory to the destination
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os.makedirs(dest, exist_ok=True)
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self.mg.mount(source, dest)
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def map(self, store, origin, refs, target, _options):
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self.bind_mount_local_storage(target)
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images = {}
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for ref, data in refs.items():
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images[ref] = {
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"format": "containers-storage",
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"name": data["name"]
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}
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images[ref]["name"] = data["name"]
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images[ref]["storage"] = self.storage_conf["storage"]
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reply = {
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"path": target,
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"data": {
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"archives": images
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}
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}
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return reply
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def unmap(self):
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self.mg.umount()
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def main():
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service = ContainersStorageInput.from_args(sys.argv[1:])
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service.main()
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if __name__ == '__main__':
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main()
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