Merge branch 'add_remove_appservice' into 'next'

Add ability to remove an appservice

See merge request famedly/conduit!236

APPSERVICES.md

@@ -42,6 +42,14 @@ could help.
 
 ## Appservice-specific instructions
 
+### Remove an appservice
+
+To remove an appservice go to your admin room and execute
+
+```@conduit:your.server.name: unregister_appservice <name>```
+
+where `<name>` one of the output of `list_appservices`.
+
 ### Tested appservices
 
 These appservices have been tested and work with Conduit without any extra steps:

src/database/admin.rs

@@ -12,6 +12,7 @@ use tracing::warn;
 
 pub enum AdminCommand {
     RegisterAppservice(serde_yaml::Value),
+    UnregisterAppservice(String),
     ListAppservices,
     SendMessage(RoomMessageEventContent),
 }
@@ -96,6 +97,9 @@ impl Admin {
                             AdminCommand::RegisterAppservice(yaml) => {
                                 guard.appservice.register_appservice(yaml).unwrap(); // TODO handle error
                             }
+                            AdminCommand::UnregisterAppservice(service_name) => {
+                                guard.appservice.unregister_appservice(&service_name).unwrap(); // TODO: see above
+                            }
                             AdminCommand::ListAppservices => {
                                 if let Ok(appservices) = guard.appservice.iter_ids().map(|ids| ids.collect::<Vec<_>>()) {
                                     let count = appservices.len();

src/database/appservice.rs

@@ -27,6 +27,21 @@ impl Appservice {
         Ok(())
     }
 
+    /// Remove an appservice registration
+    /// 
+    /// # Arguments
+    /// 
+    /// * `service_name` - the name you send to register the service previously
+    pub fn unregister_appservice(&self, service_name: &str) -> Result<()> {
+        self.id_appserviceregistrations
+            .remove(service_name.as_bytes())?;
+        self.cached_registrations.
+            write().
+            unwrap().
+            remove(service_name);
+        Ok(())
+    }
+
     pub fn get_registration(&self, id: &str) -> Result<Option<serde_yaml::Value>> {
         self.cached_registrations
             .read()

src/database/rooms.rs

@@ -1528,6 +1528,19 @@ impl Rooms {
                                         ));
                                     }
                                 }
+                                "unregister_appservice" => {
+                                    if args.len() == 1 {
+                                        db.admin.send(AdminCommand::UnregisterAppservice(
+                                            args[0].to_owned(),
+                                        ));
+                                    } else {
+                                        db.admin.send(AdminCommand::SendMessage(
+                                            RoomMessageEventContent::text_plain(
+                                                "Missing appservice identifier",
+                                            ),
+                                        ));
+                                    }
+                                }
                                 "list_appservices" => {
                                     db.admin.send(AdminCommand::ListAppservices);
                                 }