Collect external_service_op counters

[mamoep]

Is your feature request related to a problem? Please describe.
I want to see the latency to my LDAP server.

Describe the solution you'd like
Please add collection of external_service_op counters and a corresponding dashboard.

[cgrinds]

Thanks @mamoep we'll take a look

[Hardikl]

Hi @mamoep

As part of this issue, We would be adding the external_service_op object in ZapiPerf collector and below are the list of counters which are available from this object.

counters:
  - instance_name
  - instance_uuid
  - last_modified_timestamp
  - node_name            
  - num_not_found_responses
  - num_request_failures
  - num_requests_sent
  - num_responses_received
  - num_successful_responses
  - num_timeouts
  - operation
  - process_name
  - request_latency
  - request_latency_hist
  - server_ip_address
  - server_name
  - service_name
  - vserver_name          

What other counters would you like to monitor/collect along with the latency(request_latency) to LDAP server?

[mamoep]

These all would be helpful in my opinion.

• num_not_found_responses
• num_request_failures
• num_requests_sent
• num_responses_received
• num_successful_responses
• num_timeouts
• request_latency_hist

[cgrinds]

Verified on 3ffa2eb

2023-05-01T08:34:12-04:00 INF collector/collector.go:483 > Collected Poller=sar apiMs=552 calcMs=0 collector=ZapiPerf:ExternalServiceOperation instances=10 metrics=470 parseMs=2 pluginMs=0 skips=0