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author | Mark D. Roth <roth@google.com> | 2017-03-15 08:06:21 -0700 |
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committer | Mark D. Roth <roth@google.com> | 2017-03-15 08:06:21 -0700 |
commit | 3a91707acefc5e099f37ee24c19abfd16fabef8b (patch) | |
tree | a4a7837b399ca19105a0e807ea93a12d7814bc8e /doc/status_ordering.md | |
parent | 02612c163e949ed70a399cf9dd311457bb29c902 (diff) | |
parent | 3cafec2f55f66e3df61569579c8259b2e5b5ee00 (diff) |
Merge remote-tracking branch 'upstream/master' into retry_throttle
Diffstat (limited to 'doc/status_ordering.md')
-rw-r--r-- | doc/status_ordering.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/status_ordering.md b/doc/status_ordering.md new file mode 100644 index 0000000000..fccfa863a3 --- /dev/null +++ b/doc/status_ordering.md @@ -0,0 +1,16 @@ +Ordering Status and Reads in the gRPC API +----------------------------------------- + +Rules for implementors: +1. Reads and Writes Must not succeed after Status has been delivered. +2. OK Status is only delivered after all buffered messages are read. +3. Reads May continue to succeed after a failing write. + However, once a write fails, all subsequent writes Must fail, + and similarly, once a read fails, all subsequent reads Must fail. +4. When an error status is known to the library, if the user asks for status, + the library Should discard messages received in the library but not delivered + to the user and then deliver the status. If the user does not ask for status + but continues reading, the library Should deliver buffered messages before + delivering status. The library MAY choose to implement the stricter version + where errors cause all buffered messages to be dropped, but this is not a + requirement. |