[pbs-devel] [PATCH v6 proxmox-backup 14/29] api types/config: add `sync-push` config type for push sync jobs

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

In order for sync jobs to be either pull or push jobs, allow to
configure the direction of the job.

Adds an additional config type `sync-push` to the sync job config, to
clearly distinguish sync jobs configured in pull and in push
direction and defines and implements the required `SyncDirection` api
type.

This approach was chosen in order to limit possible misconfiguration,
as unintentionally switching the sync direction could potentially
delete still required snapshots.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
changes since version 5:
- no changes

 pbs-api-types/src/jobs.rs | 38 ++++++++++++++++++++++++++++++++++++++
 pbs-config/src/sync.rs    | 16 +++++++++++++---
 2 files changed, 51 insertions(+), 3 deletions(-)

diff --git a/pbs-api-types/src/jobs.rs b/pbs-api-types/src/jobs.rs
index bf7a6bd5a..e8056beb0 100644
--- a/pbs-api-types/src/jobs.rs
+++ b/pbs-api-types/src/jobs.rs
@@ -498,6 +498,44 @@ pub const TRANSFER_LAST_SCHEMA: Schema =
         .minimum(1)
         .schema();
 
+#[api()]
+#[derive(Copy, Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "kebab-case")]
+/// Direction of the sync job, push or pull
+pub enum SyncDirection {
+    /// Sync direction pull
+    #[default]
+    Pull,
+    /// Sync direction push
+    Push,
+}
+
+impl std::fmt::Display for SyncDirection {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            SyncDirection::Pull => f.write_str("pull"),
+            SyncDirection::Push => f.write_str("push"),
+        }
+    }
+}
+
+impl SyncDirection {
+    pub fn as_config_type_str(&self) -> &'static str {
+        match self {
+            SyncDirection::Pull => "sync",
+            SyncDirection::Push => "sync-push",
+        }
+    }
+
+    pub fn from_config_type_str(config_type: &str) -> Result<Self, anyhow::Error> {
+        match config_type {
+            "sync" => Ok(SyncDirection::Pull),
+            "sync-push" => Ok(SyncDirection::Push),
+            _ => bail!("invalid config type for sync job"),
+        }
+    }
+}
+
 #[api(
     properties: {
         id: {
diff --git a/pbs-config/src/sync.rs b/pbs-config/src/sync.rs
index 45453abb1..7fc977e77 100644
--- a/pbs-config/src/sync.rs
+++ b/pbs-config/src/sync.rs
@@ -6,7 +6,7 @@ use anyhow::Error;
 use proxmox_schema::{ApiType, Schema};
 use proxmox_section_config::{SectionConfig, SectionConfigData, SectionConfigPlugin};
 
-use pbs_api_types::{SyncJobConfig, JOB_ID_SCHEMA};
+use pbs_api_types::{SyncDirection, SyncJobConfig, JOB_ID_SCHEMA};
 
 use crate::{open_backup_lockfile, replace_backup_config, BackupLockGuard};
 
@@ -18,9 +18,19 @@ fn init() -> SectionConfig {
         _ => unreachable!(),
     };
 
-    let plugin = SectionConfigPlugin::new("sync".to_string(), Some(String::from("id")), obj_schema);
+    let pull_plugin = SectionConfigPlugin::new(
+        SyncDirection::Pull.as_config_type_str().to_string(),
+        Some(String::from("id")),
+        obj_schema,
+    );
+    let push_plugin = SectionConfigPlugin::new(
+        SyncDirection::Push.as_config_type_str().to_string(),
+        Some(String::from("id")),
+        obj_schema,
+    );
     let mut config = SectionConfig::new(&JOB_ID_SCHEMA);
-    config.register_plugin(plugin);
+    config.register_plugin(pull_plugin);
+    config.register_plugin(push_plugin);
 
     config
 }
-- 
2.39.5



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