Add helper function to supply and parse error_details from Status.

2 files changed, 62 insertions, 1 deletions

diff --git a/include/grpc++/impl/codegen/status.h b/include/grpc++/impl/codegen/status.h
index 5cce3c1672..31fd6cdbe7 100644
--- a/include/grpc++/impl/codegen/status.h
+++ b/include/grpc++/impl/codegen/status.h
@@ -53,7 +53,7 @@ class Status {
 
   /// Construct an instance with \a code,  \a error_message and \a error_details
   Status(StatusCode code, const grpc::string& error_message,
-         const grpc::string error_details)
+         const grpc::string& error_details)
       : code_(code),
         error_message_(error_message),
         binary_error_details_(error_details) {}
diff --git a/include/grpc++/support/error_details.h b/include/grpc++/support/error_details.h
new file mode 100644
index 0000000000..411175fb46
--- /dev/null
+++ b/include/grpc++/support/error_details.h
@@ -0,0 +1,61 @@
+/*
+ *
+ * Copyright 2017, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPCXX_SUPPORT_ERROR_DETAILS_H
+#define GRPCXX_SUPPORT_ERROR_DETAILS_H
+
+#include <grpc++/support/status.h>
+
+namespace google {
+namespace rpc {
+class Status;
+}  // namespace rpc
+}  // namespace google
+
+namespace grpc {
+
+// Maps a grpc::Status to a google::rpc::Status.
+// The given \a to object will be cleared.
+// On success, returns status with OK.
+// Returns status with INVALID_ARGUMENT, if failed to deserialize.
+// Returns status with FAILED_PRECONDITION, if \a to is nullptr.
+Status ExtractErrorDetails(const Status& from, ::google::rpc::Status* to);
+
+// Maps google::rpc::Status to a grpc::Status.
+// Returns OK on success.
+// Returns status with FAILED_PRECONDITION if \a to is nullptr.
+Status SetErrorDetails(const ::google::rpc::Status& from, Status* to);
+
+}  // namespace grpc
+
+#endif  // GRPCXX_SUPPORT_ERROR_DETAILS_H