Joseph Wu created MESOS-3820:
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Summary: Refactor libprocess initialization to allow for test-only
reinitialization of the server socket
Key: MESOS-3820
URL: https://issues.apache.org/jira/browse/MESOS-3820
Project: Mesos
Issue Type: Task
Components: libprocess, test
Reporter: Joseph Wu
Assignee: Joseph Wu
*Background*
Libprocess initialization includes the spawning of a variety of global
processes and the creation of the server socket which listens for incoming
requests. Some properties of the server socket are configured via environment
variables, such as the IP and port or the SSL configuration.
In the case of tests, libprocess is initialized once per test binary. This
means that testing different configurations (SSL in particular) is cumbersome
as a separate process would be needed for every test case.
*Proposal*
# Follow the [example of the SSL
library|https://github.com/apache/mesos/blob/master/3rdparty/libprocess/src/openssl.cpp#L280]
and allow tests to declare an internal function for re-initializing a portion
of libprocess.
# Move the [existing creation of the server
socket|https://github.com/apache/mesos/blob/master/3rdparty/libprocess/src/process.cpp#L852-L856]
into a {{reinitialize_server_socket}} function.
# Add any necessary cleanup for swapping server sockets.
# Consider whether any additional locking is required in the
{{reinitialize_server_socket}} function.
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