tasks-kubernetes-port-forward-service.yaml

- name: Get service port for local access
  block:
  - name: "Convert {{ service_name }} to a NodePort service"
    shell: >-
      kubectl patch svc -n {{ service_namespace }} {{ service_name }} --type='json' -p '[{"op":"replace","path":"/spec/type","value":"NodePort"}]'
  - name: Get all ports of type NodePort
    shell: >-
      kubectl get svc -n {{ service_namespace }} {{ service_name }} {% raw %} -o go-template='{{if .items}}{{range .items}}{{range.spec.ports}}{{.nodePort}}{{"\n"}}{{end}}{{end}}{{else}}{{range.spec.ports}}{{.nodePort}}{{"\n"}}{{end}}{{end}}' {% endraw %}
    register: service_port
  when: service_name != "SKIP"

  # TODO what to do if there are multiple nodeports that need to be port forwarded
- name: Setup and enable systemd service for port forwarding
  block:
  - name: "Copy over the skeleton service file for systemd"
    become: True
    copy:
      src: charts_config/skeleton.service
      dest: "{{ service_file_location_base }}{{ service_file_name }}"

  # TODO what if minikube IP changes, the IP is set at deployment time here
  # Maybe should be part of the systemd service in a script?
  - name: Register minikube ssh-key location
    shell: minikube ssh-key
    register: dir_minikube_ssh_key

  - name: Register minikube ip
    shell: minikube ip
    register: minikube_ip

  - name: "Service file edit: Add port forward command for local access"
    become: True
    # https://gist.github.com/drmalex07/c0f9304deea566842490
    lineinfile:
      path: "{{ service_file_location_base }}{{ service_file_name }}"
      regexp: '^ExecStart=(.*)$' 
      line: "ExecStart=ssh -NT -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ExitOnForwardFailure=yes -o GatewayPorts=true -i {{ dir_minikube_ssh_key.stdout }} docker@{{ minikube_ip.stdout }} -L {{ host_port }}:0.0.0.0:{{ service_port.stdout }}"
      backrefs: yes
    when: service_name != "SKIP"

  - name: "Service file edit: Add port forward command for domain access"
    become: True
    # https://gist.github.com/drmalex07/c0f9304deea566842490
    lineinfile:
      path: "{{ service_file_location_base }}{{ service_file_name }}"
      regexp: '^ExecStart=(.*)$'
      line: "ExecStart=ssh -NT -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o ExitOnForwardFailure=yes -o GatewayPorts=true -i {{ dir_minikube_ssh_key.stdout }} docker@{{ minikube_ip.stdout }} -L {{ host_port }}:0.0.0.0:{{ service_port }}"
      backrefs: yes
    when: service_name == "SKIP"

  - name: "Service file edit: Change User to be {{ ansible_user }}"
    become: True
    # https://gist.github.com/drmalex07/c0f9304deea566842490
    lineinfile:
      path: "{{ service_file_location_base }}{{ service_file_name }}"
      regexp: '^User=(.*)$'
      line: "User={{ ansible_user }}"
      backrefs: yes

  - name: Reload systemd service
    include_tasks: tasks-reload-systemd-service.yaml
    vars:
      service_name: "{{ service_file_name }}"
      become: True