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[sfputilbase] Extend get_transceiver_change_event return event #50

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merged 5 commits into from
Aug 6, 2019
Merged

[sfputilbase] Extend get_transceiver_change_event return event #50

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6904fad
Merge pull request #1 from Azure/master
keboliu Jan 24, 2019
82e21fb
Merge branch 'master' of https://github.com/Azure/sonic-platform-common
keboliu Feb 19, 2019
8527ed9
Merge pull request #3 from Azure/master
keboliu Apr 11, 2019
83d3a6a
Merge branch 'master' of https://github.com/Azure/sonic-platform-common
keboliu Jul 31, 2019
ce01408
add more error code to get_transceiver_change_event
keboliu Jul 31, 2019
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10 changes: 7 additions & 3 deletions sonic_platform_base/sonic_sfp/sfputilbase.py
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Expand Up @@ -1253,8 +1253,12 @@ def get_transceiver_change_event(self, timeout=0):
event. When timeout is non-zero, the function can also return when the timer expires.
When timer expires, the return status is True and events is empty.
:returns: (status, events)
:status: Boolean, True if call successful, False if not;
:events: dictionary for pysical port index and the SFP status,
status='1' represent plug in, '0' represent plug out like {'0': '1', '31':'0'}
:status: Boolean, True if call successful and no system level event/error occurred,
False if call not success or system level event/error occurred.
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:events: dictionary for physical port index and the SFP status,
status='1' represent plug in, '0' represent plug out like {'0': '1', '31':'0'}
when it comes to system level event/error, the index will be '-1',
and status can be 'system_not_ready', 'system_become_ready', 'system_fail',
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system_become_ready [](start = 48, length = 19)

From design perspective, system_become_ready is not necessary. If this event is really happen, the logic could continue run as a normal successful case or a timeout case. Then all the system level events are actually errors in concept.

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@stephenxs stephenxs Aug 2, 2019 •
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Hi Qi,
I admit that in terms of state machine any normal event, like sfp module insertion or removal, can indicate the xcvrd has entered a normal state. However, an explicit notification can make the flow more clear. Without system_bdcom_ready we can hardly tell whether the xcvrd is in a normal state, monitoring the sfp modules' state, or waiting for ready.
In this sense, I suggest keeping this state.

like {'-1':'system_not_ready'}.
"""
return