111 lines
4.2 KiB
Python
Executable File
111 lines
4.2 KiB
Python
Executable File
import json
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import os
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import subprocess
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import sys
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from config import etcd_client, env_vars
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from 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 main():
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# If you are using env_vars.get('WITHOUT_CEPH') FLAG in .env
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# then please make sure that env_vars.get('IMAGE_DIR') directory
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# exists otherwise this script would fail
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if env_vars.get('WITHOUT_CEPH') and not os.path.isdir(env_vars.get('IMAGE_DIR')):
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print("You have set env_vars.get('WITHOUT_CEPH') to True. So,"
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"the {} must exists. But, it don't".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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# 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 = os.path.join(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 env_vars.get('WITHOUT_CEPH'):
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image_import_command = ["mv", "image.raw", os.path.join(env_vars.get('IMAGE_DIR'), image_uuid)]
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snapshot_creation_command = ["true"]
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snapshot_protect_command = ["true"]
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else:
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image_import_command = ["rbd", "import", "image.raw",
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"{}/{}".format(image_store_pool, image_uuid)]
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snapshot_creation_command = ["rbd", "snap", "create",
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"{}/{}@protected".format(image_store_pool, image_uuid)]
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snapshot_protect_command = ["rbd", "snap", "protect",
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"{}/{}@protected".format(image_store_pool, image_uuid)]
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# First check whether the image is qcow2
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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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# Import image either to ceph/filesystem
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subprocess.check_output(image_import_command)
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# Create and Protect Snapshot
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subprocess.check_output(snapshot_creation_command)
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subprocess.check_output(snapshot_protect_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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# 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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