[pbs-devel] [PATCH v5 proxmox-backup 00/31] fix #3044: push datastore to remote target

[Christian Ebner <c.ebner@proxmox.com>]

This patch series implements the functionality to extend the current
sync jobs in pull direction by an additional push direction, allowing
to push contents of a local source datastore to a remote target.

The series implements this by using the REST API of the remote target
for fetching, creating and/or deleting namespaces, groups and backups,
and reuses the clients backup writer functionality to create snapshots
by writing a manifeset on the remote target and sync the fixed index,
dynamic index or blobs contained in the source manifest to the remote,
preserving also encryption information.

Thanks to Fabian for further feedback to the previous version of the
patches, especially regarding users and ACLs.

Changes since version 4 of the patch series:
- Rebased onto current master

Most notable changes since version 3 of the patch series include:
- Rework access control permission checks to resemble the pull based
  logic more closely.
  In order to perform a full sync in push direction, including
  permissions for pruning contents with remove vansished, a acl.cfg
  looks like below:
  ```
  acl:1:/datastore/source-store:syncoperator@pbs:DatastoreReader
  acl:1:/remote:syncoperator@pbs:RemoteAudit
  acl:1:/remote/remote-target/target-store:syncoperator@pbs:RemoteDatastorePrune,RemoteSyncPushOperator
  ```
- Modify access to sync jobs now requires `DatastoreAudit` for both,
  pull and push sync jobs
- Fix previously incorrect privs required for removing target
  namespaces
- Fix performance bottleneck by not reading known chunks from source,
  by sending `MergedChunkInfo` instead of `ChunkInfo` over to the
  upload stream
- Factor upload statistic counters and structs out into their own
  module and provide methods for easy conversion
- Implement `map_to_target` helper for easier/more readable source to
  target mapping for namespaces
- Optimize namespace creation on target, only try creating non
  pre-existing namespace components.
- Avoid temp file for manifest and upload source manifest directly
- Not failing on deletion for protected snapshots is now opt-in
- Refactor api endpoint `version` in order to be able to fetch api
  version for target
- Reworked `SyncDirection` api type, use `api` macro to reduce code

Most notable changes since version 2 of the patch series include:
- Add checks and extend roles and privs to allow for restricting a local
  users access to remote datastore operations. In order to perform a
  full sync in push direction, including permissions for namespace
  creation and deleting contents with remove vansished, a acl.cfg looks
  like below:
  ```
  acl:1:/datastore/datastore:syncoperator@pbs:DatastoreAudit
  acl:1:/remote:syncoperator@pbs:RemoteSyncOperator
  acl:1:/remote/local/pushme:syncoperator@pbs:RemoteDatastoreModify,RemoteDatastorePrune,RemoteSyncPushOperator
  ```
  Based on further feedback, privs might get further grouped or an
  additional role containing most of these can be created.
- Drop patch introducing `no-timestamp-check` flag for backup client, as pointed
  out by Fabian this is not needed, as only backups newer than the currently
  last available will be pushed.
- Fix read snapshots from source by using the correct namespace.
- Rename PullParameters `owner` to more fitting `local_user`.
- Fix typos in remote sync push operator comment.
- Fix comments not matching the functionality for the cli implementations.

Link to issue on bugtracker:
https://bugzilla.proxmox.com/show_bug.cgi?id=3044

Christian Ebner (31):
  client: backup writer: refactor backup and upload stats counters
  client: backup writer: factor out merged chunk stream upload
  client: backup writer: allow push uploading index and chunks
  config: acl: refactor acl path component check for datastore
  config: acl: allow namespace components for remote datastores
  api types: implement remote acl path method for sync job
  api types: define remote permissions and roles for push sync
  fix #3044: server: implement push support for sync operations
  api types/config: add `sync-push` config type for push sync jobs
  api: push: implement endpoint for sync in push direction
  api: sync: move sync job invocation to server sync module
  api: sync jobs: expose optional `sync-direction` parameter
  api: admin: avoid duplicate name for list sync jobs api method
  api: config: Require PRIV_DATASTORE_AUDIT to modify sync job
  api: config: factor out sync job owner check
  api: config: extend read access check by sync direction
  api: config: extend modify access check by sync direction
  bin: manager: add datastore push cli command
  ui: group filter: allow to set namespace for local datastore
  ui: sync edit: source group filters based on sync direction
  ui: add view with separate grids for pull and push sync jobs
  ui: sync job: adapt edit window to be used for pull and push
  ui: sync: pass sync-direction to allow removing push jobs
  ui: sync view: do not use data model proxy for store
  ui: sync view: set sync direction when invoking run task via api
  datastore: move `BackupGroupDeleteStats` to api types
  api types: implement api type for `BackupGroupDeleteStats`
  api/api-types: refactor api endpoint version, add api types
  datastore: increment deleted group counter when removing group
  api: datastore/namespace: return backup groups delete stats on remove
  server: sync job: use delete stats provided by the api

 pbs-api-types/src/acl.rs             |  25 +
 pbs-api-types/src/datastore.rs       |  64 ++
 pbs-api-types/src/jobs.rs            |  51 ++
 pbs-api-types/src/lib.rs             |   3 +
 pbs-api-types/src/version.rs         |  98 +++
 pbs-client/src/backup_stats.rs       | 130 ++++
 pbs-client/src/backup_writer.rs      | 289 +++++---
 pbs-client/src/lib.rs                |   4 +
 pbs-config/src/acl.rs                |  11 +-
 pbs-config/src/sync.rs               |  16 +-
 pbs-datastore/src/backup_info.rs     |  34 +-
 pbs-datastore/src/datastore.rs       |  27 +-
 src/api2/admin/datastore.rs          |  29 +-
 src/api2/admin/namespace.rs          |  31 +-
 src/api2/admin/sync.rs               |  44 +-
 src/api2/config/datastore.rs         |  15 +-
 src/api2/config/notifications/mod.rs |  21 +-
 src/api2/config/sync.rs              | 285 ++++++--
 src/api2/mod.rs                      |   2 +
 src/api2/pull.rs                     | 108 ---
 src/api2/push.rs                     | 222 +++++++
 src/api2/version.rs                  |  39 +-
 src/bin/proxmox-backup-manager.rs    | 216 ++++--
 src/bin/proxmox-backup-proxy.rs      |  24 +-
 src/server/mod.rs                    |   2 +
 src/server/pull.rs                   |   6 +-
 src/server/push.rs                   | 948 +++++++++++++++++++++++++++
 src/server/sync.rs                   | 128 +++-
 www/Makefile                         |   1 +
 www/config/SyncPullPushView.js       |  60 ++
 www/config/SyncView.js               |  47 +-
 www/datastore/DataStoreList.js       |   2 +-
 www/datastore/Panel.js               |   2 +-
 www/form/GroupFilter.js              |  18 +-
 www/window/SyncJobEdit.js            |  45 +-
 35 files changed, 2582 insertions(+), 465 deletions(-)
 create mode 100644 pbs-api-types/src/version.rs
 create mode 100644 pbs-client/src/backup_stats.rs
 create mode 100644 src/api2/push.rs
 create mode 100644 src/server/push.rs
 create mode 100644 www/config/SyncPullPushView.js

-- 
2.39.5



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