add az exceptions

include/multipass/exceptions/availability_zone_exceptions.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) Canonical, Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef MULTIPASS_AVAILABILITY_ZONE_EXCEPTIONS_H
+#define MULTIPASS_AVAILABILITY_ZONE_EXCEPTIONS_H
+
+#include <stdexcept>
+#include <string>
+
+#include <multipass/format.h>
+
+namespace multipass
+{
+struct AvailabilityZoneError : std::runtime_error
+{
+    template <typename... Args>
+    explicit AvailabilityZoneError(const char* fmt, Args&&... args)
+        : runtime_error(fmt::format(fmt, std::forward<Args>(args)...))
+    {
+    }
+};
+
+struct AvailabilityZoneSerializationError final : AvailabilityZoneError
+{
+    using AvailabilityZoneError::AvailabilityZoneError;
+};
+
+struct AvailabilityZoneDeserializationError final : AvailabilityZoneError
+{
+    using AvailabilityZoneError::AvailabilityZoneError;
+};
+
+struct AvailabilityZoneManagerError : std::runtime_error
+{
+    template <typename... Args>
+    explicit AvailabilityZoneManagerError(const char* fmt, Args&&... args)
+        : runtime_error(fmt::format(fmt, std::forward<Args>(args)...))
+    {
+    }
+};
+
+struct AvailabilityZoneManagerSerializationError final : AvailabilityZoneManagerError
+{
+    using AvailabilityZoneManagerError::AvailabilityZoneManagerError;
+};
+
+struct AvailabilityZoneManagerDeserializationError final : AvailabilityZoneManagerError
+{
+    using AvailabilityZoneManagerError::AvailabilityZoneManagerError;
+};
+
+struct AvailabilityZoneNotFound final : AvailabilityZoneManagerError {
+    explicit AvailabilityZoneNotFound(const std::string& name) : AvailabilityZoneManagerError{"no AZ with name {:?} found", name} {}
+};
+
+struct NoAvailabilityZoneAvailable final : AvailabilityZoneManagerError {
+    NoAvailabilityZoneAvailable() : AvailabilityZoneManagerError{"no AZ is available"} {}
+};
+} // namespace multipass
+
+#endif // MULTIPASS_AVAILABILITY_ZONE_EXCEPTIONS_H