[PoC] Update/Reload without downtime #149
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Another process can take over UDP/TCP sockets without downtime.
server = ServerEngine::SocketManager::Server.take_over_another_server(path)
This starts a new server that has all UDP/TCP sockets of the
existing server.
It receives the sockets from the existing server and stops it
after starts a new server.
This may not be the primary use case assumed by ServerEngine, but
we need this feature to replace both the server and the workers
with a new process without downtime.
Currently, ServerEngine does not provide this feature for
network servers.
At the moment, I assume that the application side uses this
feature ad hoc, but, in the future, this could be used to support
live reload for entire network servers.
ref: fluent/fluentd#4622
Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>
Signed-off-by: Shizuo Fujita <fujita@clear-code.com>
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