openserverless/runtimes_preloader.py

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# to you under the Apache License, Version 2.0 (the
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import kopf, logging
import openserverless.kube as kube
import openserverless.kustomize as kus
import openserverless.config as cfg
import openserverless.util as util
import openserverless.runtimes_util as rutil
import json

def create(owner=None):
    logging.info(f"*** configuring runtime preloader")
    runtimes_as_json = util.get_runtimes_json_from_config_map()
    data=rutil.parse_runtimes(json.loads(runtimes_as_json))
    if not data['containers']:
        logging.info("*** skipped runtime preloader: no valid runtime images found")
        return "skipped runtime preloader"
    
    kust = kus.patchTemplates("runtimes", ["runtimes-job-container-attach.yaml"], data)
    spec = kus.kustom_list("runtimes", kust, templates=[], data=data)
    
    if owner:
        kopf.append_owner_reference(spec['items'], owner)
    else:
        cfg.put("state.preloader.spec", spec)

    res = kube.apply(spec)

    logging.info("*** configured runtime preloader")
    return res

def delete_by_owner():
    spec = kus.build("runtimes")
    res = kube.delete(spec)
    logging.info(f"delete runtimes preloader: {res}")
    return res

def delete_by_spec():
    spec = cfg.get("state.preloader.spec")
    res = False
    if spec:
        res = kube.delete(spec)
        logging.info(f"delete runtimes preloader: {res}")
    return res

def delete(owner=None):
    if owner:        
        return delete_by_owner()
    else:
        return delete_by_spec()