Introduce supervisor.procHandle interface #5137
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Signed-off-by: Tom Wieczorek <[email protected]>
Signed-off-by: Tom Wieczorek <[email protected]>
Add the cmdline and environ functions to it. Signed-off-by: Tom Wieczorek <[email protected]>
This encapsulates the kill syscall. Signed-off-by: Tom Wieczorek <[email protected]>
pkg/supervisor/supervisor_unix.go
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| // killPid tries to gracefully terminate a PID. If it's still running after | ||
| // s.TimeoutStop the process will be terminated forcibly. | ||
| func (s *Supervisor) killPid(ph procHandle) error { |
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I think it would make more sense to avoid the term PID entirely in this function because the interface is an abstraction that doesn't include the PID itself, even though it's there underneath.
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| // killPid tries to gracefully terminate a PID. If it's still running after | |
| // s.TimeoutStop the process will be terminated forcibly. | |
| func (s *Supervisor) killPid(ph procHandle) error { | |
| // killProcess tries to gracefully terminate a Process. If it's still running after | |
| // s.TimeoutStop the process will be terminated forcibly. | |
| func (s *Supervisor) killProcess(ph procHandle) error { |
This encapsulates all of the OS-specific code for interacting with processes identified by PID files. Signed-off-by: Tom Wieczorek <[email protected]>
This will be the new factory function for OS-specific process interaction. Signed-off-by: Tom Wieczorek <[email protected]>
Move the now OS-agnostic Supervisor methods maybeKillPidFile, shouldKillProcess and killPid from the UNIX-specific file into the general one. Signed-off-by: Tom Wieczorek <[email protected]>
The supervisor code is now completely OS independent. It uses the procHandle interface to abstract away any OS specifics. Rename the old OS-specific supervisor files to prochandle, since that's what they contain now. Signed-off-by: Tom Wieczorek <[email protected]>
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juanluisvaladas
approved these changes
Oct 23, 2024
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Description
This encapsulates all OS-specific code for interacting with processes identified by PID files. This allows OS agnostic code parts to be shared across OSes, and it opens a way to more easily add Windows support in the future.
The OS specific features are:
The code has been refactored to first introduce freestanding functions for command line and environment inspection, then add a new type to which these functions have been moved and which is used by the OS agnostic methods. Finally, the methods have been moved out of platform-specific files, and the platform-specific files have been renamed to reflect that they belong to the new
procHandleabstraction.Type of change
How Has This Been Tested?
Checklist: