harbor/tools/migrate_chart/migrate_chart.py

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#!/usr/local/bin/python3
import subprocess
import signal
import sys
from pathlib import Path
import click
import requests
MIGRATE_CHART_SCRIPT = '/migrate_chart.sh'
HELM_CMD = '/linux-amd64/helm'
CA_UPDATE_CMD = 'update-ca-certificates'
CHART_URL_PATTERN = "https://{host}/api/v2.0/projects/{project}/repositories/{name}/artifacts/{version}"
CHART_SOURCE_DIR = Path('/chart_storage')
errs = []
def print_exist_errs():
if errs:
click.echo("There are {} errors exist".format(len(errs)), err=True)
for e in errs:
click.echo(e, err=True)
# Write the error to file
with open("/chart_storage/migration_errors.txt", "a") as f:
f.write(e + "\n")
def graceful_exit(signum, frame):
print_exist_errs()
sys.exit()
signal.signal(signal.SIGINT, graceful_exit)
signal.signal(signal.SIGTERM, graceful_exit)
class ChartV2:
def __init__(self, filepath:Path):
self.filepath = filepath
self.project = self.filepath.parts[-2]
parts = self.filepath.stem.split('-')
flag = False
try:
for i in range(len(parts)-1, -1, -1):
if parts[i][0].isnumeric() or ((parts[i][0]=='v' or parts[i][0]=='v') and parts[i][1].isnumeric()) :
self.name, self.version = '-'.join(parts[:i]), '-'.join(parts[i:])
flag = True
break
if not flag:
raise Exception('chart name: {} is illegal'.format('-'.join(parts)))
except Exception as e:
click.echo("Skipped chart: {} due to illegal chart name. Error: {}".format(filepath, e), err=True)
return
def __check_exist(self, hostname, username, password):
return requests.get(CHART_URL_PATTERN.format(
host=hostname,
project=self.project,
name=self.name,
version=self.version),
auth=requests.auth.HTTPBasicAuth(username, password))
def migrate(self, hostname, username, password):
res = self.__check_exist(hostname, username, password)
if res.status_code == 200:
raise Exception("Artifact already exist in harbor")
if res.status_code == 401:
raise Exception(res.reason)
oci_ref = "oci://{host}/{project}".format(
host=hostname,
project=self.project)
return subprocess.run([MIGRATE_CHART_SCRIPT, HELM_CMD, self.filepath, oci_ref],
text=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE)
@click.command()
@click.option('--hostname', default='127.0.0.1', help='the password to login harbor')
@click.option('--username', default='admin', help='The username to login harbor')
@click.option('--password', default='Harbor12345', help='the password to login harbor')
def migrate(hostname, username, password):
"""
Migrate chart v2 to harbor oci registry
"""
if username != 'admin':
raise Exception('This operation only allowed for admin')
subprocess.run([CA_UPDATE_CMD])
subprocess.run([HELM_CMD, 'registry', 'login', hostname, '--username', username, '--password', password])
charts = [ChartV2(c) for p in CHART_SOURCE_DIR.iterdir() if p.is_dir() for c in p.iterdir() if c.is_file() and c.name.endswith(".tgz")]
with click.progressbar(charts, label="Migrating chart ...", length=len(charts),
item_show_func=lambda x: "{}/{}:{} total errors: {}".format(x.project, x.name, x.version, len(errs)) if x else '') as bar:
for chart in bar:
try:
result = chart.migrate(hostname, username, password)
if result.stderr:
errs.append("chart: {name}:{version} in {project} has err: {err}".format(
name=chart.name,
version=chart.version,
project=chart.project,
err=result.stderr
))
except Exception as e:
errs.append("chart: {name}:{version} in {project} has err: {err}".format(
name=chart.name,
version=chart.version,
project=chart.project,
err=e))
click.echo("Migration is Done.")
print_exist_errs()
if __name__ == '__main__':
migrate()