1 files changed, 107 insertions, 0 deletions
diff --git a/src/crimson/net/Errors.cc b/src/crimson/net/Errors.cc
new file mode 100644
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--- /dev/null
+++ b/src/crimson/net/Errors.cc
@@ -0,0 +1,107 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2017 Red Hat, Inc
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#include "Errors.h"
+
+namespace ceph::net {
+
+const std::error_category& net_category()
+{
+  struct category : public std::error_category {
+    const char* name() const noexcept override {
+      return "ceph::net";
+    }
+
+    std::string message(int ev) const override {
+      switch (static_cast<error>(ev)) {
+        case error::success:
+          return "success";
+        case error::bad_connect_banner:
+          return "bad connect banner";
+        case error::bad_peer_address:
+          return "bad peer address";
+        case error::negotiation_failure:
+          return "negotiation failure";
+        case error::read_eof:
+          return "read eof";
+        case error::connection_aborted:
+          return "connection aborted";
+        case error::connection_refused:
+          return "connection refused";
+        case error::connection_reset:
+          return "connection reset";
+        default:
+          return "unknown";
+      }
+    }
+
+    // unfortunately, seastar throws connection errors with the system category,
+    // rather than the generic category that would match their counterparts
+    // in std::errc. we add our own errors for them, so we can match either
+    std::error_condition default_error_condition(int ev) const noexcept override {
+      switch (static_cast<error>(ev)) {
+        case error::connection_aborted:
+          return std::errc::connection_aborted;
+        case error::connection_refused:
+          return std::errc::connection_refused;
+        case error::connection_reset:
+          return std::errc::connection_reset;
+        default:
+          return std::error_condition(ev, *this);
+      }
+    }
+
+    bool equivalent(int code, const std::error_condition& cond) const noexcept override {
+      if (error_category::equivalent(code, cond)) {
+        return true;
+      }
+      switch (static_cast<error>(code)) {
+        case error::connection_aborted:
+          return cond == std::errc::connection_aborted
+              || cond == std::error_condition(ECONNABORTED, std::system_category());
+        case error::connection_refused:
+          return cond == std::errc::connection_refused
+              || cond == std::error_condition(ECONNREFUSED, std::system_category());
+        case error::connection_reset:
+          return cond == std::errc::connection_reset
+              || cond == std::error_condition(ECONNRESET, std::system_category());
+        default:
+          return false;
+      }
+    }
+
+    bool equivalent(const std::error_code& code, int cond) const noexcept override {
+      if (error_category::equivalent(code, cond)) {
+        return true;
+      }
+      switch (static_cast<error>(cond)) {
+        case error::connection_aborted:
+          return code == std::errc::connection_aborted
+              || code == std::error_code(ECONNABORTED, std::system_category());
+        case error::connection_refused:
+          return code == std::errc::connection_refused
+              || code == std::error_code(ECONNREFUSED, std::system_category());
+        case error::connection_reset:
+          return code == std::errc::connection_reset
+              || code == std::error_code(ECONNRESET, std::system_category());
+        default:
+          return false;
+      }
+    }
+  };
+  static category instance;
+  return instance;
+}
+
+} // namespace ceph::net