From 6b50733e5ff0a2a61e3d3e4f07527026f4568acc Mon Sep 17 00:00:00 2001
From: Steffen Vogel <post@steffenvogel.de>
Date: Mon, 27 Aug 2018 11:12:10 +0200
Subject: [PATCH] added new classes for custom exceptions
---
common/include/villas/exceptions.hpp | 122 +++++++++++++++++++++++++++
1 file changed, 122 insertions(+)
create mode 100644 common/include/villas/exceptions.hpp
diff --git a/common/include/villas/exceptions.hpp b/common/include/villas/exceptions.hpp
new file mode 100644
index 000000000..4b82bded2
--- /dev/null
+++ b/common/include/villas/exceptions.hpp
@@ -0,0 +1,122 @@
+/** Custom exceptions.
+ *
+ * @file
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2018, Institute for Automation of Complex Power Systems, EONERC
+ * @license GNU General Public License (version 3)
+ *
+ * VILLASnode
+ *
+ * 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, either version 3 of the License, or
+ * any later version.
+ *
+ * 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/>.
+ *********************************************************************************/
+
+#pragma once
+
+#include <string>
+#include <sstream>
+#include <system_error>
+#include <utility>
+#include <cerrno>
+
+#include <fmt/core.h>
+#include <jansson.h>
+
+namespace villas {
+
+class SystemError : public std::system_error {
+
+public:
+ SystemError(const std::string &what) :
+ std::system_error(
+ errno,
+ std::system_category(),
+ what
+ )
+ { }
+
+ template<typename... Args>
+ SystemError(const std::string &what, Args&&... args) :
+ SystemError(fmt::format(what, std::forward<Args>(args)...))
+ { }
+};
+
+class RuntimeError : public std::runtime_error {
+
+public:
+ template<typename... Args>
+ RuntimeError(const std::string &what, Args&&... args) :
+ std::runtime_error(fmt::format(what, std::forward<Args>(args)...))
+ { }
+};
+
+class JsonError : public std::runtime_error {
+
+protected:
+ json_error_t error;
+
+public:
+ JsonError(const json_error_t &err) :
+ std::runtime_error("Failed to decode JSON document"),
+ error(err)
+ { }
+
+ template<typename... Args>
+ JsonError(const json_error_t &err, const std::string &what, Args&&... args) :
+ std::runtime_error(fmt::format(what, std::forward<Args>(args)...))
+ { }
+
+ virtual const char * what()
+ {
+ return fmt::format("{}: {} in {}:{}:{}",
+ std::runtime_error::what(),
+ error.text, error.source, error.line, error.column
+ ).c_str();
+ }
+};
+
+class ConfigError : public std::runtime_error {
+
+protected:
+
+ std::string id;
+ json_t *setting;
+
+public:
+ template<typename... Args>
+ ConfigError(json_t *s, const std::string &i, const std::string &what, Args&&... args) :
+ std::runtime_error(fmt::format(what, std::forward<Args>(args)...)),
+ id(i),
+ setting(s)
+ { }
+
+ std::string docUri()
+ {
+ std::string baseUri = "https://villas.fein-aachen.org/doc/jump?";
+
+ return baseUri + id;
+ }
+
+ virtual const char * what()
+ {
+ std::stringstream ss;
+
+ ss << "Invalid configuration setting: " << std::endl;
+ ss << " Please consult the user documentation for details:" << std::endl;
+ ss << " " << docUri() << std::endl;
+
+ return ss.str().c_str();
+ }
+};
+
+} // namespace villas