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From Joseph Wu <>
Subject Re: Review Request 69472: Refactored master and agent streaming connections.
Date Thu, 06 Dec 2018 01:23:51 GMT

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(Updated Dec. 5, 2018, 5:23 p.m.)

Review request for mesos, Benno Evers, Gastón Kleiman, and Greg Mann.


Was accidentally copying the `ResponseHeartbeater` class, causing the actor to be terminated
immediately.  Disallowed copying of that object and fixed the copy.

Bugs: MESOS-7564

Repository: mesos


This moves the very similar `HttpConnection` classes inside the
master and agent into a common header.  The refactored
`StreamingHttpConnection<Event>` is more explicitly named to avoid
potentially clashing with the libprocess HTTP helpers.

This also moves the master's heartbeater helper into a new header
and transforms it into an RAII libprocess actor wrapper.  The 
heartbeater depends on this `StreamingHttpConnection` and is currently
used by the master for heartbeating the operator event stream
and HTTP framework connection.  A later patch will use this heartbeater
for agent->executor heartbeats.

Diffs (updated)

  src/common/heartbeater.hpp PRE-CREATION 
  src/common/http.hpp ac9ed5e8b1c6e8e100eba401136eb95c9dd621d4 
  src/master/framework.cpp 36eda9f287bef28608024e0036db1f955a1b393c 
  src/master/http.cpp 68ee2a6dcffbc772afec6e797b1af8da48f61937 
  src/master/master.hpp c7becfa615964674dcf1ebd9424aa5818a0fdb85 
  src/master/master.cpp 3b3824a67f46866cd64e32d7f9f92484b5891aa2 
  src/slave/http.cpp ba389263ef7ab311682d542424eb56360841d24c 
  src/slave/slave.hpp edf7269d4057ec8c95bb54c855210ad00d002a50 
  src/slave/slave.cpp 858b78620e1ef33f3587d0bd95a684917aaf5bbb 





The original plan was to use the same helper for the executor too, but of the Master, Framework,
and Agent heartbeats, only the executor lacks a streaming connection.


Joseph Wu

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