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Not a proper review, yet. 3rdparty/libprocess/include/process/grpc.hpp Line 86 (original), 84-93 (patched) <https://reviews.apache.org/r/67154/#comment285380> Is this any different than StatusError(const ::grpc::Status& _status) : Error(_status.error_message()), status(_status) ... We currently don't seem to require this to be able to take generic types. 3rdparty/libprocess/include/process/grpc.hpp Line 122 (original), 135 (patched) <https://reviews.apache.org/r/67154/#comment285379> This would look like a good use case for a hypothetical `Future` with a custom error type (instead of `std::string` aka `Failure`) template <typename T, typename E> struct Future; I believe there is a bigger interest in customizing the error type of `Try` recently, and it might make sense to think about adding that same power to `Future`. I created https://issues.apache.org/jira/browse/MESOS-8925 to track such work. - Benjamin Bannier On May 16, 2018, 9:20 p.m., Chun-Hung Hsiao wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/67154/ > ----------------------------------------------------------- > > (Updated May 16, 2018, 9:20 p.m.) > > > Review request for mesos, Benjamin Bannier, Benjamin Mahler, Jie Yu, and > Zhitao Li. > > > Bugs: MESOS-8924 > https://issues.apache.org/jira/browse/MESOS-8924 > > > Repository: mesos > > > Description > ------- > > The `process::grpc::client::Runtime::call` method currently returns a > `RpcResult<Response>`, which contains both a `::grpc::Status` object > and the resulting response protobuf. However, if the `::grpc::Status` > represents a non-OK status, the gRPC library does not guarantee that > the response protobuf is valid. This patch replaces `RpcResult` with > `Try` to provide better type safety. > > > Diffs > ----- > > 3rdparty/libprocess/include/process/grpc.hpp > 321a46e19c69eafb24012bcef68bb8b0cc6aa436 > 3rdparty/libprocess/src/tests/grpc_tests.cpp > 38cd6c61b54518a1019bb11a3551be13026c3f0d > > > Diff: https://reviews.apache.org/r/67154/diff/1/ > > > Testing > ------- > > make check in libprocess > > NOTE: Mesos cannot be built with this patch standalone. The tests are done > later in the chain. > > > Thanks, > > Chun-Hung Hsiao > >
