svnplace
16 Jul 2024 11:22
1 contributor
| 1 | name: Initialise RepoRepository from Full Backup |
| 2 | |
| 3 | args: |
| 4 | - |
| 5 | name: reporepository |
| 6 | label: Repo repository |
| 7 | placeholder: Urn or api id |
| 8 | python_type: str |
| 9 | - |
| 10 | name: host |
| 11 | label: Host instance |
| 12 | placeholder: Urn or api id |
| 13 | python_type: str |
| 14 | - |
| 15 | name: blob |
| 16 | label: Backup blob |
| 17 | placeholder: Urn or api id |
| 18 | python_type: str |
| 19 | |
| 20 | role: |
| 21 | policies: |
| 22 | - urn/api/policy/svnplace/Allow Everything |
| 23 | parents: |
| 24 | - urn/api/role/{user.username}/ |
| 25 | - urn/api/role/svnplace/Backup Restorer |
| 26 | |
| 27 | jobs: |
| 28 | restore: |
| 29 | runs_on: |
| 30 | host_instance: "{host}" |
| 31 | mapped_repo: "{reporepository}" |
| 32 | steps: |
| 33 | - |
| 34 | name: Restore |
| 35 | python: | |
| 36 | blob = '{escape(blob)}' |
| 37 | import os |
| 38 | import subprocess |
| 39 | import sys |
| 40 | import xml.etree.ElementTree as ET |
| 41 | from api_api import API |
| 42 | |
| 43 | repo = '{repo.urn}' |
| 44 | repo_user = repo.rsplit('/',2)[1] |
| 45 | repo_name = repo.rsplit('/',2)[2] |
| 46 | repo_file = '/var/svnplace/process/repo' |
| 47 | |
| 48 | api = API('https://svnplace.com/api', ['~/.svnplace/config']) |
| 49 | |
| 50 | reporepo_desc = api.repos.describe_reporepository('{reporepository}') |
| 51 | if reporepo_desc.state.name != 'Initialising': |
| 52 | print(f'Reporepository in wrong state:{{reporepo_desc.state}') |
| 53 | sys.exit(1) |
| 54 | |
| 55 | # confirm backup is an actual backup |
| 56 | backup_desc = api.blobs.describe_blob(blob) |
| 57 | backup_seal = api.blobs.describe_seal('urn/seal/user/svnplace/Backup - Full') |
| 58 | if backup_seal.id not in backup_desc.seals: |
| 59 | print('Blob not a full backup') |
| 60 | sys.exit(1) |
| 61 | |
| 62 | # restore the backup files to the root directory |
| 63 | |
| 64 | r0 = subprocess.Popen(['blobcp', f'blob:{{backup_desc.fullpath}', '-'], stdout=subprocess.PIPE) |
| 65 | r1 = subprocess.run(['tar', '--keep-old-files', '-xzf', '-', '-C', repo_file], stdin=r0.stdout) |
| 66 | |
| 67 | if r1.returncode: |
| 68 | print('Backup failed: could not unpack backup') |
| 69 | sys.exit(1) |
| 70 | |
| 71 | r0.wait() |
| 72 | if r0.returncode: |
| 73 | print('Backup failed: reading blob failed') |
| 74 | sys.exit(1) |
| 75 | |
| 76 | backup_desc2 = api.blobs.describe_blob(blob) |
| 77 | if backup_desc2.seal_tag != backup_desc.seal_tag: |
| 78 | print('Backup failed: backup changed during restore') |
| 79 | sys.exit(1) |
| 80 | |
| 81 | repo_desc = api.repos.describe_repo(repo) |
| 82 | if repo_desc.seal in backup_desc2.seals: |
| 83 | # backup is of this repo... |
| 84 | # leave the UUID alone |
| 85 | # leave the hooks in place |
| 86 | pass |
| 87 | else: |
| 88 | # backup is of a different repo... |
| 89 | |
| 90 | # replace the uuid with a new one |
| 91 | r = subprocess.run(['svnadmin', 'setuuid', repo_file]) |
| 92 | |
| 93 | # clear all hooks |
| 94 | for item in os.scandir(f'{{repo_file}/hooks/descriptions'): |
| 95 | if item.is_file(): |
| 96 | os.remove(item.path) |
| 97 | |
| 98 | api.repos.modify_reporepository('{reporepository}', state='Ready') |
| 99 | |
| 100 | print('Restore complete') |
| 101 |