Support tcp/http liveness/readiness probe

[ichxxx]

close #1427

Add extra labels to support tcp liveness/readiness probe and http readiness probe

kompose.service.healthcheck.liveness.tcp_port: 8080
kompose.service.healthcheck.readiness.http_get_path: /ready
kompose.service.healthcheck.readiness.http_get_port: 8080
kompose.service.healthcheck.readiness.tcp_port: 8080

[hangyan]

@ichxxx Hi, thanks for the PR, codes looks great. Since we have support merge multiple service to one workload, it's recommned to add extra test for this case. Check out the service-group-mode flags. You can reuse your current fixtures or the existing one for multiple-service-merge

[ichxxx]

@hangyan Support and test for multiple service merge was added

[ichxxx]

And I find the annotations have a bit problem on multiple containers, that annotations just show info about one of the services, not all the services.

[hangyan]

And I find the annotations have a bit problem on multiple containers, that annotations just show info about one of the services, not all the services.

What do you mean? Would you like to give an example?

[ichxxx]

And I find the annotations have a bit problem on multiple containers, that annotations just show info about one of the services, not all the services.

What do you mean? Would you like to give an example?

For example:
docker-compose.yaml

version: "3.3"
services:
  mongo:
    image: mongo
    labels:
      kompose.service.group: "my-group"
      kompose.service.healthcheck.liveness.tcp_port: 8080

  mysql:
    image: mysql
    labels:
      kompose.service.group: "my-group"
      kompose.service.healthcheck.liveness.tcp_port: 8081

output-k8s.json

{
  "kind": "Deployment",
  "apiVersion": "apps/v1",
  "metadata": {
    "name": "my-group",
    "annotations": {
      "kompose.service.group": "my-group",
      "kompose.service.healthcheck.liveness.tcp_port": "8081"
    }
  },
  "spec": {
    "template": {
      "metadata": {
        "annotations": {
          "kompose.service.group": "my-group",
          "kompose.service.healthcheck.liveness.tcp_port": "8080"
        }
      },
      "spec": {
        "containers": [
          {
            "name": "mongo",
            "livenessProbe": {
              "tcpSocket": {
                "port": 8080
              }
            }
          },
          {
            "name": "mysql",
            "livenessProbe": {
              "tcpSocket": {
                "port": 8081
              }
            }
          }
        ]
      }
    }
  }
}

There are two serivces, I specify liveness probe by labels.
The tcp port of mongo service's liveness probe is 8080, and mysql service is 8081.
But the label info in annotations just show one of the services.

[hangyan]

We can create some sperate PRs to fix this. Does not seems a big issues for me now. I guess there are some issues exist for the service group feature.

[k8s-ci-robot]

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[hangyan]

Thanks @ichxxx