use a trait object for the server, for dynamic dispatch

sync-server/src/server.rs

@@ -1,34 +0,0 @@
-use crate::types::{AddVersionResult, ClientId, GetVersionResult, HistorySegment, VersionId};
-use failure::Fallible;
-use taskchampion::Uuid;
-
-/// The sync server's implementation; HTTP API method call through to methods on a single
-/// instance of this type.
-pub(crate) struct SyncServer {}
-
-impl SyncServer {
-    pub(crate) fn new() -> Self {
-        Self {}
-    }
-
-    pub(crate) fn get_child_version(
-        &self,
-        _client_id: ClientId,
-        parent_version_id: VersionId,
-    ) -> Fallible<Option<GetVersionResult>> {
-        Ok(Some(GetVersionResult {
-            version_id: Uuid::new_v4(),
-            parent_version_id,
-            history_segment: b"abcd".to_vec(),
-        }))
-    }
-
-    pub(crate) fn add_version(
-        &self,
-        _client_id: ClientId,
-        _parent_version_id: VersionId,
-        _history_segment: &HistorySegment,
-    ) -> Fallible<AddVersionResult> {
-        Ok(AddVersionResult::Ok(Uuid::new_v4()))
-    }
-}