MLIA-460 Revisit backend management

- Provide command for backend installation in case
  if backend is not available
- Fix issue with connection timeout during downloading
- Show installation tools output only in verbose mode

Change-Id: Ic0e495ba19879cc2cda4fd0bce20b57ba896cfeb

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mlia/backend/errors.py b/src/mlia/backend/errors.py
new file mode 100644
index 0000000..bd5da95
--- /dev/null
+++ b/src/mlia/backend/errors.py
@@ -0,0 +1,12 @@
+# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+"""Backend errors."""
+
+
+class BackendUnavailableError(Exception):
+    """Backend unavailable error."""
+
+    def __init__(self, msg: str, backend: str) -> None:
+        """Init error."""
+        super().__init__(msg)
+        self.backend = backend