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https://github.com/goharbor/harbor.git
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4617e0ff38
1. Change down version to list to accept multi verstion value 2. Update search function use BFS to find migration path 2. Add test case Signed-off-by: DQ <dengq@vmware.com>
66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
import yaml
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import click
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import importlib
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import os
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from collections import deque
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class MigratioNotFound(Exception): ...
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class MigrationVersion:
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'''
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The version used to migration
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Arttribute:
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name(str): version name like `1.0.0`
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module: the python module object for a specific migration which contains migrate info, codes and templates
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down_versions(list): previous versions that can migrated to this version
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'''
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def __init__(self, version: str):
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self.name = version
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self.module = importlib.import_module("migrations.version_{}".format(version.replace(".","_")))
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@property
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def down_versions(self):
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return self.module.down_revisions
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def read_conf(path):
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with open(path) as f:
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try:
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d = yaml.safe_load(f)
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except Exception as e:
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click.echo("parse config file err, make sure your harbor config version is above 1.8.0", e)
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exit(-1)
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return d
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def search(input_version: str, target_version: str) -> list :
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"""
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Find the migration path by BFS
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Args:
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input_version(str): The version migration start from
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target_version(str): The target version migrated to
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Returns:
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list: the module of migrations in the upgrade path
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"""
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upgrade_path = []
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next_version, visited, q = {}, set(), deque()
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q.append(target_version)
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found = False
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while q: # BFS to find a valid path
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version = MigrationVersion(q.popleft())
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visited.add(version.name)
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if version.name == input_version:
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found = True
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break # break loop cause migration path found
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for v in version.down_versions:
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next_version[v] = version.name
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if v not in (visited.union(q)):
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q.append(v)
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if not found:
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raise MigratioNotFound('no migration path found to target version')
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current_version = MigrationVersion(input_version)
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while current_version.name != target_version:
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current_version = MigrationVersion(next_version[current_version.name])
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upgrade_path.append(current_version)
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return list(map(lambda x: x.module, upgrade_path)) |