91 lines
3.4 KiB
Python
Executable file
91 lines
3.4 KiB
Python
Executable file
import json
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import os
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import subprocess
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from os.path import join as join_path
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from ucloud.config import etcd_client, env_vars, image_storage_handler
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from ucloud.imagescanner import logger
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def qemu_img_type(path):
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qemu_img_info_command = ["qemu-img", "info", "--output", "json", path]
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try:
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qemu_img_info = subprocess.check_output(qemu_img_info_command)
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except Exception as e:
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logger.exception(e)
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return None
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else:
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qemu_img_info = json.loads(qemu_img_info.decode("utf-8"))
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return qemu_img_info["format"]
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def check():
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""" check whether settings are sane, refuse to start if they aren't """
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if env_vars.get('STORAGE_BACKEND') == 'filesystem' and not isdir(env_vars.get('IMAGE_DIR')):
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print("You have set STORAGE_BACKEND to filesystem, but "
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"{} does not exist. Refusing to start".format(env_vars.get('IMAGE_DIR')))
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sys.exit(1)
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try:
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subprocess.check_output(['which', 'qemu-img'])
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except Exception:
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print("qemu-img missing")
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sys.exit(1)
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def main():
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# We want to get images entries that requests images to be created
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images = etcd_client.get_prefix(env_vars.get('IMAGE_PREFIX'), value_in_json=True)
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images_to_be_created = list(filter(lambda im: im.value['status'] == 'TO_BE_CREATED', images))
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for image in images_to_be_created:
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try:
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image_uuid = image.key.split('/')[-1]
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image_owner = image.value['owner']
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image_filename = image.value['filename']
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image_store_name = image.value['store_name']
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image_full_path = join_path(env_vars.get('BASE_DIR'), image_owner, image_filename)
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image_stores = etcd_client.get_prefix(env_vars.get('IMAGE_STORE_PREFIX'), value_in_json=True)
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user_image_store = next(filter(
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lambda s, store_name=image_store_name: s.value["name"] == store_name,
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image_stores
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))
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image_store_pool = user_image_store.value['attributes']['pool']
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except Exception as e:
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logger.exception(e)
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else:
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# At least our basic data is available
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qemu_img_convert_command = ["qemu-img", "convert", "-f", "qcow2",
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"-O", "raw", image_full_path, "image.raw"]
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if qemu_img_type(image_full_path) == "qcow2":
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try:
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# Convert .qcow2 to .raw
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subprocess.check_output(qemu_img_convert_command)
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except Exception as e:
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logger.exception(e)
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else:
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# Import and Protect
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r_status = image_storage_handler.import_image(src="image.raw",
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dest=image_uuid,
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protect=True)
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if r_status:
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# Everything is successfully done
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image.value["status"] = "CREATED"
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etcd_client.put(image.key, json.dumps(image.value))
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else:
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# The user provided image is either not found or of invalid format
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image.value["status"] = "INVALID_IMAGE"
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etcd_client.put(image.key, json.dumps(image.value))
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try:
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os.remove("image.raw")
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except Exception:
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pass
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if __name__ == "__main__":
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main()
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