Supports health checking in gRPC SDKs

[killme2008]

What type of enhancement is this?

API improvement

What does the enhancement do?

It would be ideal for the gRPC SDK to have a status indicator to show whether it is currently healthy, just like to probe the database and connections. Users can use this status to perform fault tolerance and disaster recovery actions

Implementation challenges

No response

[killme2008]

Already implemented in erlang ingester is_alive

https://github.com/GreptimeTeam/greptimedb-ingester-erl/blob/73f5d11977abf5dc2bce4b5eddc5334277d3b7ae/src/greptimedb.erl#L114

[killme2008]

@fengjiachun Do we have the same function in java ingester? If not,i think we should implement it.

https://github.com/GreptimeTeam/greptime-proto/blob/973f49cde88a582fb65755cc572ebcf6fb93ccf7/proto/greptime/v1/health.proto#L26

[fengjiachun]

@fengjiachun Do we have the same function in java ingester? If not,i think we should implement it.

https://github.com/GreptimeTeam/greptime-proto/blob/973f49cde88a582fb65755cc572ebcf6fb93ccf7/proto/greptime/v1/health.proto#L26

I will implement this later.

[fengjiachun]

@fengjiachun Do we have the same function in java ingester? If not,i think we should implement it.
https://github.com/GreptimeTeam/greptime-proto/blob/973f49cde88a582fb65755cc572ebcf6fb93ccf7/proto/greptime/v1/health.proto#L26

I will implement this later.

In progress:

GreptimeTeam/greptimedb-ingester-java#50

[fengjiachun]

@killme2008 PTAL GreptimeTeam/greptimedb-ingester-java#50