Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/src/crimson/common/exception.h b/src/crimson/common/exception.h
new file mode 100644
index 000000000..682fef69b
--- /dev/null
+++ b/src/crimson/common/exception.h
@@ -0,0 +1,54 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#pragma once
+
+#include <exception>
+#include <seastar/core/future.hh>
+#include <seastar/core/future-util.hh>
+
+#include "crimson/common/log.h"
+#include "crimson/common/interruptible_future.h"
+
+namespace crimson::common {
+
+class interruption : public std::exception
+{};
+
+class system_shutdown_exception final : public interruption{
+public:
+  const char* what() const noexcept final {
+    return "system shutting down";
+  }
+};
+
+class actingset_changed final : public interruption {
+public:
+  actingset_changed(bool sp) : still_primary(sp) {}
+  const char* what() const noexcept final {
+    return "acting set changed";
+  }
+  bool is_primary() const {
+    return still_primary;
+  }
+private:
+  const bool still_primary;
+};
+
+template<typename Func, typename... Args>
+inline seastar::future<> handle_system_shutdown(Func&& func, Args&&... args)
+{
+  return seastar::futurize_invoke(std::forward<Func>(func),
+				  std::forward<Args>(args)...)
+  .handle_exception([](std::exception_ptr eptr) {
+    if (*eptr.__cxa_exception_type() ==
+	typeid(crimson::common::system_shutdown_exception)) {
+	crimson::get_logger(ceph_subsys_osd).debug(
+	    "operation skipped, system shutdown");
+	return seastar::now();
+    }
+    std::rethrow_exception(eptr);
+  });
+}
+
+}