Update on "[Events] Add project notification settings"

[Events] Add project notification settings

    ghstack-source-id: 2b4044a63b5cc394bfe66af8706764450703d904
    Pull Request resolved: #18


    This PR adds a new model for project notifications. The semantics of the model is explained in `notifications.proto`.

    1. Adds a the model to the db model in metadata_svc and exposed it in the project store.
    2. Expose setters/getters to notification settings in metadata svc.
    3. Expose APIs to manipulate the notification settings. I opted into having a single endpoint for updating the notification setting json for convenience.

    Later, we can also add this to the CLI.

    Test plan:

    ```
    ~/repos/cronback/cronback ❯❯❯ cargo cli --localhost --secret-token adminkey admin projects create                                                                                                              ✘ 130
    Project 'prj_026601H699SE7VY0YEFHRXXE75117B' was created successfully.
    ~/repos/cronback/cronback ❯❯❯ http -b --auth adminkey --auth-type bearer POST http://localhost:8888/v1/admin/projects/prj_026601H699SE7VY0YEFHRXXE75117B/notification_settings examples/notifications.json


    ~/repos/cronback/cronback ❯❯❯ http -b --auth adminkey --auth-type bearer GET http://localhost:8888/v1/admin/projects/prj_026601H699SE7VY0YEFHRXXE75117B/notification_settings
    {
        "channels": {
            "email": {
                "address": "testgmail.com",
                "type": "email",
                "verified": false
            }
        },
        "subscriptions": [
            {
                "channel_names": [
                    "email"
                ],
                "event": {
                    "type": "on_run_failure"
                }
            }
        ]
    }
    ```





[ghstack-poisoned]

cronback-services/src/metadata/metadata_store.rs

@@ -89,7 +89,16 @@ impl MetadataStore {
 #[cfg(test)]
 mod tests {
 
+    use std::collections::HashMap;
+
     use super::*;
+    use crate::metadata::db_model::notifications::{
+        EmailNotification,
+        NotificationChannel,
+        NotificationEvent,
+        NotificationSubscription,
+        OnRunFailure,
+    };
     use crate::metadata::migrate_up;
 
     fn build_project(status: ProjectStatus) -> Project {
@@ -153,6 +162,30 @@ mod tests {
             Err(DatabaseError::DB(sea_orm::DbErr::RecordNotUpdated))
         ));
 
+        // Test notification setters / getters
+        {
+            let email = EmailNotification {
+                address: "[email protected]".to_string(),
+                verified: true,
+            };
+            let mut channels = HashMap::new();
+            channels
+                .insert("email".to_string(), NotificationChannel::Email(email));
+            let setting = NotificationSettings {
+                channels,
+                subscriptions: vec![NotificationSubscription {
+                    channel_names: vec!["email".to_string()],
+                    event: NotificationEvent::OnRunFailure(OnRunFailure {}),
+                }],
+            };
+            store
+                .set_notification_settings(&project2.id, setting.clone())
+                .await?;
+
+            let found = store.get_notification_settings(&project2.id).await?;
+            assert_eq!(found, Some(setting));
+        }
+
         Ok(())
     }
 }