On 7/7/10 2:27 PM, Byron Nevins wrote:
> How are you guaranteeing that the cached state in InstanceStateImpl
> reflects reality? E.g. what if I "kill -9" an instance -- how does
> the cached state change to not-running?
I will depend on GMS for that.
Vijay
>
>
> On 7/7/2010 10:02 AM, Vijay Ramachandran wrote:
>> For those CLI/module owners who want a way to get the state of an
>> instance at any time :
>>
>> A new service, InstanceState, has been introduced. You can use this
>> by doing the following in your code :
>>
>> @Inject InstanceState state;
>>
>> As of now, this service interacts with the command replication
>> framework and, hence, the state of an instance changes from RUNNING
>> to RESTART_REQUIRED only. Soon this service will interact with GMS
>> subsystem and every other instance state change will be reflected.
>>
>> You may want to consider using this instead doing other forms of
>> pinging an instance (like doing uptime / version / locations command)
>> to see if an instance is alive.
>>
>> Let me know if you have any feedback / comments / issues with this.
>>
>> Vijay
>>
>>
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>