On dataset upload, create orga dir if it does not exist (#8230)

* On dataset upload, create orga dir if it does not exist

* changelog

CHANGELOG.unreleased.md

@@ -23,6 +23,7 @@ For upgrade instructions, please check the [migration guide](MIGRATIONS.released
 - Fix a bug where changing the color of a segment via the menu in the segments tab would update the segment color of the previous segment, on which the context menu was opened. [#8225](https://github.com/scalableminds/webknossos/pull/8225)
 - Fix a bug when importing an NML with groups when only groups but no trees exist in an annotation. [#8176](https://github.com/scalableminds/webknossos/pull/8176)
 - Fix a bug where trying to delete a non-existing node (via the API, for example) would delete the whole active tree. [#8176](https://github.com/scalableminds/webknossos/pull/8176)
+- Fix a bug where dataset uploads would fail if the organization directory on disk is missing. [#8230](https://github.com/scalableminds/webknossos/pull/8230)
 
 ### Removed
 - Removed Google Analytics integration. [#8201](https://github.com/scalableminds/webknossos/pull/8201)

webknossos-datastore/app/com/scalableminds/webknossos/datastore/services/DataSourceService.scala

@@ -14,6 +14,7 @@ import com.scalableminds.webknossos.datastore.models.datasource._
 import com.scalableminds.webknossos.datastore.models.datasource.inbox.{InboxDataSource, UnusableDataSource}
 import com.scalableminds.webknossos.datastore.storage.RemoteSourceDescriptorService
 import com.typesafe.scalalogging.LazyLogging
+import net.liftweb.common.Box.tryo
 import net.liftweb.common._
 import play.api.inject.ApplicationLifecycle
 import play.api.libs.json.Json
@@ -53,8 +54,17 @@ class DataSourceService @Inject()(
     if (inboxCheckVerboseCounter >= 10) inboxCheckVerboseCounter = 0
   }
 
-  def assertDataDirWritable(organizationId: String): Fox[Unit] =
-    Fox.bool2Fox(Files.isWritable(dataBaseDir.resolve(organizationId))) ?~> "Datastore cannot write to its data directory."
+  def assertDataDirWritable(organizationId: String): Fox[Unit] = {
+    val orgaPath = dataBaseDir.resolve(organizationId)
+    if (orgaPath.toFile.exists()) {
+      Fox.bool2Fox(Files.isWritable(dataBaseDir.resolve(organizationId))) ?~> "Datastore cannot write to organization data directory."
+    } else {
+      tryo {
+        Files.createDirectory(orgaPath)
+      }.map(_ => ()).toFox ?~> "Could not create organization directory on datastore server"
+    }
+
+  }
 
   def checkInbox(verbose: Boolean): Fox[Unit] = {
     if (verbose) logger.info(s"Scanning inbox ($dataBaseDir)...")