1 files changed, 38 insertions, 0 deletions
diff --git a/src/orchestrator/util.rs b/src/orchestrator/util.rs
new file mode 100644
index 0000000..2b20694
--- /dev/null
+++ b/src/orchestrator/util.rs
@@ -0,0 +1,38 @@
+//
+// Copyright (c) 2020-2021 science+computing ag and other contributors
+//
+// This program and the accompanying materials are made
+// available under the terms of the Eclipse Public License 2.0
+// which is available at https://www.eclipse.org/legal/epl-2.0/
+//
+// SPDX-License-Identifier: EPL-2.0
+//
+
+use std::collections::HashMap;
+
+use anyhow::Error;
+use uuid::Uuid;
+
+/// Get a `Display`able interface for a Map of errors
+///
+/// This is a helper trait for be able to display a `HashMap<Uuid, Error>`
+/// in a `log::trace!()` call, for example
+pub trait AsReceivedErrorDisplay {
+    fn display_error_map(&self) -> ReceivedErrorDisplay<'_>;
+}
+
+impl AsReceivedErrorDisplay for HashMap<Uuid, Error> {
+    fn display_error_map(&self) -> ReceivedErrorDisplay<'_> {
+        ReceivedErrorDisplay(self)
+    }
+}
+
+
+pub struct ReceivedErrorDisplay<'a>(&'a HashMap<Uuid, Error>);
+
+impl<'a> std::fmt::Display for ReceivedErrorDisplay<'a> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.0.iter().try_for_each(|(uuid, err)| writeln!(f, "{}: {}", uuid, err))
+    }
+}
+