description: "loadbalanced-logging"

schemaVersion: "1.16"

runOnRequirements:
  - topologies:
      - load-balanced
    minServerVersion: "4.4" # awaitable hello

tests:
  - description: "Topology lifecycle"
    operations:
      - name: createEntities
        object: testRunner
        arguments:
          entities:
            - client:
                id: &client client
                observeLogMessages:
                  topology: debug
                observeEvents:
                  - topologyDescriptionChangedEvent
      # ensure the topology has been fully discovered before closing the client.
      # expected events are initial server discovery and server connect event.
      - name: waitForEvent
        object: testRunner
        arguments:
          client: *client
          event:
            topologyDescriptionChangedEvent: {}
          count: 2
      - name: close
        object: *client
    expectLogMessages:
      - client: *client
        messages:
          - level: debug
            component: topology
            data:
              message: "Starting topology monitoring"
              topologyId: { $$exists: true }
          - level: debug
            component: topology
            data:
              message: "Topology description changed"
              topologyId: { $$exists: true }
              previousDescription:  { $$exists: true } # unknown topology
              newDescription: { $$exists: true } # unknown topology, disconnected server
          - level: debug
            component: topology
            data:
              message: "Starting server monitoring"
              topologyId: { $$exists: true }
              serverHost: { $$type: string }
              serverPort: { $$type: [int, long] }
          - level: debug
            component: topology
            data:
              message: "Topology description changed"
              topologyId: { $$exists: true }
              previousDescription:  { $$exists: true }
              newDescription: { $$exists: true } # loadBalanced topology
          - level: debug
            component: topology
            data:
              message: "Stopped server monitoring"
              topologyId: { $$exists: true }
              serverHost: { $$type: string }
              serverPort: { $$type: [int, long] }
          - level: debug
            component: topology
            data:
              message: "Stopped topology monitoring"
              topologyId: { $$exists: true }