---
- name: Calico | Write Calico cni config
  template:
    src: "cni-calico.conf.j2"
    dest: "/etc/cni/net.d/10-calico.conf"
    owner: kube

- name: Calico | Set docker daemon options
  template:
    src: docker
    dest: "/etc/default/docker"
    owner: root
    group: root
    mode: 0644
  notify:
    - restart docker
  when: ansible_os_family != "CoreOS"

- meta: flush_handlers

- name: Calico | Create calico certs directory
  file:
    dest: "{{ calico_cert_dir }}"
    state: directory
    mode: 0750
    owner: root
    group: root

- name: Calico | Link etcd certificates for calico-node
  file:
    src: "{{ etcd_cert_dir }}/{{ item.s }}"
    dest: "{{ calico_cert_dir }}/{{ item.d }}"
    state: hard
  with_items:
    - {s: "ca.pem", d: "ca_cert.crt"}
    - {s: "node.pem", d: "cert.crt"}
    - {s: "node-key.pem", d: "key.pem"}

- name: Calico | Install calicoctl container script
  template:
    src: calicoctl-container.j2
    dest: "{{ bin_dir }}/calicoctl"
    mode: 0755
    owner: root
    group: root
  changed_when: false
  notify: restart calico-node

- name: Calico | Copy cni plugins from hyperkube
  command: "/usr/bin/docker run --rm -v /opt/cni/bin:/cnibindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /usr/bin/rsync -a /opt/cni/bin/ /cnibindir/"
  register: cni_task_result
  until: cni_task_result.rc == 0
  retries: 4
  delay: "{{ retry_stagger | random + 3 }}"
  changed_when: false

- name: Calico | Copy cni plugins from calico/cni container
  command: "/usr/bin/docker run --rm -v /opt/cni/bin:/cnibindir {{ calico_cni_image_repo }}:{{ calico_cni_image_tag }} sh -c 'cp -a /opt/cni/bin/* /cnibindir/'"
  register: cni_task_result
  until: cni_task_result.rc == 0
  retries: 4
  delay: "{{ retry_stagger | random + 3 }}"
  changed_when: false
  when: "{{ overwrite_hyperkube_cni|bool }}"

- name: Calico | wait for etcd
  uri: url=https://localhost:2379/health validate_certs=no
  register: result
  until: result.status == 200 or result.status == 401
  retries: 10
  delay: 5
  delegate_to: "{{groups['etcd'][0]}}"
  run_once: true

- name: Calico | Check if calico network pool has already been configured
  command: |-
    curl \
      --cacert {{ etcd_cert_dir }}/ca.pem \
      --cert {{ etcd_cert_dir}}/admin.pem \
      --key {{ etcd_cert_dir }}/admin-key.pem \
      https://{{groups['etcd'][0]}}:2379/v2/keys/calico/v1/ipam/v4/pool
  register: calico_conf
  delegate_to: "{{groups['kube-master'][0]}}"
  run_once: true

- name: Calico | Check calicoctl version
  run_once: true
  set_fact:
    legacy_calicoctl: "{{ calicoctl_image_tag | version_compare('v1.0.0', '<') }}"

- name: Calico | Configure calico network pool
  shell: >
    echo '{
    "kind": "ipPool",
    "spec": {"disabled": false, "ipip": {"enabled": {{ cloud_provider is defined or ipip }}},
             "nat-outgoing": {{ nat_outgoing|default(false) and not peer_with_router|default(false) }}},
    "apiVersion": "v1",
    "metadata": {"cidr": "{{ kube_pods_subnet }}"}
    }'
    | {{ bin_dir }}/calicoctl create -f -
  environment:
    NO_DEFAULT_POOLS: true
  run_once: true
  when: not legacy_calicoctl and
         ("Key not found" in calico_conf.stdout or "nodes" not in calico_conf.stdout)

- name: Calico (old) | Define ipip pool argument
  run_once: true
  set_fact:
    ipip_arg: "--ipip"
  when: (legacy_calicoctl and
         cloud_provider is defined or ipip)

- name: Calico (old) | Define nat-outgoing pool argument
  run_once: true
  set_fact:
    nat_arg: "--nat-outgoing"
  when: (legacy_calicoctl and
         nat_outgoing|default(false) and not peer_with_router|default(false))

- name: Calico (old) | Define calico pool task name
  run_once: true
  set_fact:
    pool_task_name: "with options {{ ipip_arg|default('') }} {{ nat_arg|default('') }}"
  when: (legacy_calicoctl and ipip_arg|default(false) or nat_arg|default(false))

- name: Calico (old) | Configure calico network pool {{ pool_task_name|default('') }}
  command: "{{ bin_dir}}/calicoctl pool add {{ kube_pods_subnet }} {{ ipip_arg|default('') }} {{ nat_arg|default('') }}"
  environment:
    NO_DEFAULT_POOLS: true
  run_once: true
  when: legacy_calicoctl and
         ("Key not found" in calico_conf.stdout or "nodes" not in calico_conf.stdout)

- name: Calico | Get calico configuration from etcd
  command: |-
    curl \
      --cacert {{ etcd_cert_dir }}/ca.pem \
      --cert {{ etcd_cert_dir}}/admin.pem \
      --key {{ etcd_cert_dir }}/admin-key.pem \
      https://{{groups['etcd'][0]}}:2379/v2/keys/calico/v1/ipam/v4/pool
  register: calico_pools_raw
  delegate_to: "{{groups['kube-master'][0]}}"
  run_once: true

- set_fact:
    calico_pools: "{{ calico_pools_raw.stdout | from_json }}"
  run_once: true

- name: Calico | Check if calico pool is properly configured
  fail:
    msg: 'Only one network pool must be configured and it must be the subnet {{ kube_pods_subnet }}.
    Please erase calico configuration and run the playbook again ("etcdctl rm --recursive /calico/v1/ipam/v4/pool")'
  when: ( calico_pools['node']['nodes'] | length > 1 ) or
        ( not calico_pools['node']['nodes'][0]['key'] | search(".*{{ kube_pods_subnet | ipaddr('network') }}.*") )
  run_once: true

- name: Calico | Write /etc/network-environment
  template: src=network-environment.j2 dest=/etc/network-environment
  when: ansible_service_mgr in ["sysvinit","upstart"]

- name: Calico | Write calico-node systemd init file
  template: src=calico-node.service.j2 dest=/etc/systemd/system/calico-node.service
  when: ansible_service_mgr == "systemd"
  notify: restart calico-node

- name: Calico | Write calico-node initd script
  template: src=deb-calico.initd.j2 dest=/etc/init.d/calico-node owner=root mode=0755
  when: ansible_service_mgr in ["sysvinit","upstart"] and ansible_os_family == "Debian"
  notify: restart calico-node

- name: Calico | Write calico-node initd script
  template: src=rh-calico.initd.j2 dest=/etc/init.d/calico-node owner=root mode=0755
  when: ansible_service_mgr in ["sysvinit","upstart"] and ansible_os_family == "RedHat"
  notify: restart calico-node

- meta: flush_handlers

- name: Calico | Enable calico-node
  service:
    name: calico-node
    state: started
    enabled: yes

- name: Calico | Disable node mesh
  shell: "{{ bin_dir }}/calicoctl config set nodeToNodeMesh off"
  when: (not legacy_calicoctl and
         peer_with_router|default(false) and inventory_hostname in groups['kube-node'])

- name: Calico | Configure peering with router(s)
  shell: >
   echo '{
   "kind": "bgppeer",
   "spec": {"asNumber": {{ item.as }}},
   "apiVersion": "v1",
   "metadata": {"node": "rack1-host1", "scope": "node", "peerIP": "{{ item.router_id }}"}
   }'
   | {{ bin_dir }}/calicoctl create -f -
  with_items: peers
  when: (not legacy_calicoctl and
         peer_with_router|default(false) and inventory_hostname in groups['kube-node'])

- name: Calico (old) | Disable node mesh
  shell: "{{ bin_dir }}/calicoctl bgp node-mesh off"
  when: (legacy_calicoctl and
         peer_with_router|default(false) and inventory_hostname in groups['kube-node'])

- name: Calico (old) | Configure peering with router(s)
  shell: "{{ bin_dir }}/calicoctl node bgp peer add {{ item.router_id }} as {{ item.as }}"
  with_items: peers
  when: (legacy_calicoctl and
         peer_with_router|default(false) and inventory_hostname in groups['kube-node'])