1 files changed, 25 insertions, 0 deletions
diff --git a/docker/credentials/errors.py b/docker/credentials/errors.py
new file mode 100644
index 0000000..42a1bc1
--- /dev/null
+++ b/docker/credentials/errors.py
@@ -0,0 +1,25 @@
+class StoreError(RuntimeError):
+    pass
+
+
+class CredentialsNotFound(StoreError):
+    pass
+
+
+class InitializationError(StoreError):
+    pass
+
+
+def process_store_error(cpe, program):
+    message = cpe.output.decode('utf-8')
+    if 'credentials not found in native keychain' in message:
+        return CredentialsNotFound(
+            'No matching credentials in {}'.format(
+                program
+            )
+        )
+    return StoreError(
+        'Credentials store {} exited with "{}".'.format(
+            program, cpe.output.decode('utf-8').strip()
+        )
+    )