Add REST API versioning support (second try)

MIGRATIONS.md

@@ -9,6 +9,7 @@ User-facing changes are documented in the [changelog](CHANGELOG.md).
 - There is now a separate module for the tracingstore, the datastore is no longer responsible for saving tracings. This module can run as a standalone application, or as a module of webKnossos locally. It is recommended that you choose the option that was previously also in place for datastores. In case of a standalone datastore, the local one needs to be disabled in application.conf: `tracingstore.enabled = false` and `play.modules.disabled += "com.scalableminds.braingames.datastore.TracingStoreModule` – and in either case, the adress of the tracingstore (localhost or remote) needs to be inserted in the db in `webknossos.tracingStores`.
 - The FossilDB version has changed from `0.1.10` to `0.1.14`.
 - The FossilDB needs to be run with an additional column family `volumeUpdates`.
+- If your setup overwrites the config key `play.http.router` to disable the local datastore, change it to `"noDS.Routes"` (or `"noDS.noTS.Routes"` to also disable the local tracingstore).
 
 #### Postgres Evolutions:
 - [027-drop-dataset-name-unique-constraint.sql](conf/evolutions/027-drop-dataset-name-unique-constraint.sql)

app/controllers/LegacyApiController.scala

@@ -0,0 +1,12 @@
+package controllers
+
+import com.mohiva.play.silhouette.api.Silhouette
+import javax.inject.Inject
+import oxalis.security.WkEnv
+import utils.WkConf
+
+class LegacyApiController @Inject()(conf: WkConf,
+                                    sil: Silhouette[WkEnv]) extends Controller {
+
+
+}

conf/noDS.noTS.routes

@@ -0,0 +1,3 @@
+GET           /assets/*file                                                         controllers.Assets.at(path="/public", file)
+
+-> /api/      webknossos.versioned.Routes

conf/noDS.routes

@@ -0,0 +1,4 @@
+GET           /assets/*file                                                         controllers.Assets.at(path="/public", file)
+
+-> /api/      webknossos.versioned.Routes
+-> /tracings/ com.scalableminds.webknossos.tracingstore.Routes

conf/noTS.routes

@@ -0,0 +1,4 @@
+GET           /assets/*file                                                         controllers.Assets.at(path="/public", file)
+
+-> /api/      webknossos.versioned.Routes
+-> /data/     com.scalableminds.webknossos.datastore.Routes

conf/routes

@@ -1,3 +1,5 @@
--> /          webknossos.Routes
+GET           /assets/*file                                                         controllers.Assets.at(path="/public", file)
+
+-> /api/      webknossos.versioned.Routes
 -> /data/     com.scalableminds.webknossos.datastore.Routes
 -> /tracings/ com.scalableminds.webknossos.tracingstore.Routes

conf/webknossos.versioned.routes

@@ -0,0 +1,13 @@
+# API versioning is handled here. Higher-Priority routes first
+
+GET      /assets/*file                                                  controllers.Assets.at(path="/public", file)
+
+# example: assume, the features route has changed, introducing v2. The older v1 needs to be provided in the legacyApiController
+#->      /v2/      webknossos.Routes
+
+
+# GET    /v1/features                                                         controllers.LegacyApiController.v1features
+->       /v1/      webknossos.latest.Routes
+
+
+->       /         webknossos.latest.Routes