[pmg-devel] [RFC pmg-api 00/12] POC PBS integration

[Stoiko Ivanov <s.ivanov@proxmox.com>]

This series is a minimal proof-of-concept for integrating PBS into PMG.

The code needs quite a bit of cleanup, and more testing, however I'll send it
as RFC, for an initial sanity-check - to see if I missed some needed
functionality.

It reuses quite a bit of code from pve-storage (PBSPlugin, and the systemd
unit manipulation from the PVE::API2::Disks::Directory) and I'd like to
refactor the common parts into pve-common.

The backup consists of the same files, that end up in a locally generated
PMG Backup (instead of creating a tar.gz we send the data to a PBS instance).

What works:
* creating and manipulating 'remotes' (PBS instances where we back up to)
* creating, restoring and forgetting backups to those remotes
* restoring a backup from another PMG installation from a configured remote
* creating schedules for backups (systemd-timer units) for periodic backups
via CLI (pmgbackup, pmgsh)

What's missing:
* quite a bit of refactoring (e.g. move the systemd-timer helpers and most of
  PBSTools to pve-common (and reuse it in the PBS Storage plugin)
* encryption support
* pruneing support
* testing
* GUI
* Documentation

The first patch is a small cosmetic cleanup, and independent of the series.

A sample session (which I used for testing:
```
pmgbackup remote add pbs1 --datastore local --server 192.0.2.11 --user root@pam --password xxx --fingerprint  ff:ff:...
pmgbackup remote list
pmgbackup pbsjob run pbs1
pmgbackup pbsjob restore pbs1 -althost pmg-live -config 1 -database 1 -statistic 1
pmgbackup pbsjob run pbs1
pmgbackup pbsjob list_backups pbs1
pmgbackup pbsjob create pbs1 --schedule 'minutely' --delay '0s'
systemctl list-timers --all
```

Stoiko Ivanov (12):
  drop left-over commented out code
  Backup: split backup creation and creating tar
  Restore: optionally restore from directory
  Backup: push restore options to PMG::Backup
  debian: add dependency on proxmox-backup-client
  add helper module for handling PBS Integration
  PBSTools: add methods for managing backups
  PBSTools: add systemd-timer helpers
  add initial SectionConfig for pbs
  Add API2 module for PBS configuration
  Add API2 module for per-node backups to PBS
  pbs-integration: add CLI calls to pmgbackup

 debian/control                |   1 +
 debian/dirs                   |   1 +
 debian/pmg-pbsbackup@.service |   6 +
 debian/rules                  |   1 +
 src/Makefile                  |   6 +-
 src/PMG/API2/Backup.pm        |  21 +-
 src/PMG/API2/Config.pm        |   7 +
 src/PMG/API2/Nodes.pm         |   7 +
 src/PMG/API2/PBS/Job.pm       | 467 ++++++++++++++++++++++++++++++++++
 src/PMG/API2/PBS/Remote.pm    | 218 ++++++++++++++++
 src/PMG/Backup.pm             |  86 +++++--
 src/PMG/CLI/pmgbackup.pm      |  27 ++
 src/PMG/PBSConfig.pm          | 168 ++++++++++++
 src/PMG/PBSTools.pm           | 466 +++++++++++++++++++++++++++++++++
 14 files changed, 1447 insertions(+), 35 deletions(-)
 create mode 100644 debian/pmg-pbsbackup@.service
 create mode 100644 src/PMG/API2/PBS/Job.pm
 create mode 100644 src/PMG/API2/PBS/Remote.pm
 create mode 100644 src/PMG/PBSConfig.pm
 create mode 100644 src/PMG/PBSTools.pm

-- 
2.20.1