{{/*

Infrakit Groups Config

This is a template JSON for managing two groups of instances - managers and workers - on AWS.
To keep things simple, we use the metadata api on AWS to determine subnets and vpc ids.

This is to support the use case where infrakit is running *inside* the cloud environment where
the instances it manages reside.

 */}}

{{ source "common.ikt" }} {{/* a common template included here to define global variables */}}

{{/* Local variables */}}
{{ $swarmLeaderIP := var `/cluster/swarm/join/ip` }}
{{ $managerIPs := var `/cluster/swarm/manager/ips` }}

{{ $workerSize := sub (var `/cluster/size`) (len $managerIPs) }}
{{ $dockerEngine := `unix:///var/run/docker.sock` }} {{/* for this flavor to connect to */}}

{{ $managerInit := cat (var `/infrakit/config/root`) `/../swarm/manager-init.sh` | nospace }}
{{ $workerInit := cat (var `/infrakit/config/root`) `/../swarm/worker-init.sh` | nospace }}

{{ $myGroups := include (cat `../swarm/` (var `/cluster/provider`) `/groups.json` | nospace) | jsonDecode }}

[
    {
        "Plugin": "group",
        "Properties": {
            "ID": "managers",
            "Properties": {
                "Allocation": {
                    "LogicalIDs": {{ $managerIPs | jsonEncode }}
                },
                "Flavor": {
		    "Plugin" : "combo",
		    "Properties" : [
			{
			    "Plugin": "swarm/manager",
			    "Properties": {
				"Attachments" : {
				    "{{index $managerIPs 0}}" : [
					{ "ID":"{{index $managerIPs 0}}", "Type":"ebs" }
				    ],
				    "{{index $managerIPs 1}}" : [
					{ "ID":"{{index $managerIPs 1}}", "Type":"ebs" }
				    ],
				    "{{index $managerIPs 2}}" : [
					{ "ID":"{{index $managerIPs 2}}", "Type":"ebs" }
				    ]
				},
				"InitScriptTemplateURL": "{{ $managerInit }}",
				"SwarmJoinIP": "{{ $swarmLeaderIP }}",
				"Docker" : {
				    "Host" : "{{ $dockerEngine }}"
				}
			    }
			},
			{
			    "Plugin": "kubernetes/manager",
			    "Properties": {
				"InitScriptTemplateURL": "{{ var `/infrakit/config/root` }}/kube-managers-init.sh",
				"KubeAddOns": [
				    {
					"Name": "calico",
					"Path": "http://docs.projectcalico.org/v2.2/getting-started/kubernetes/installation/hosted/kubeadm/1.6/calico.yaml",
					"Type": "network"
				    },
				    {
					"Name": "kubedash",
					"Path": "https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml",
					"Type": "visualise"
				    }
				],
				"KubeBindPort": 6443,
				"KubeJoinIP": "{{ var `/cluster/kube/join/ip` }}",
				"KubeClusterID" : "{{ var `/cluster/name`}}",
				"SkipManagerValidation" : true,
				"ControlPlane" : [ "{{ index $managerIPs 0 }}" ]
			    }
			}
		    ]
                },
                "Instance": {{ $myGroups.Managers | jsonEncode }}
            }
        }
    }
    ,
    {
        "Plugin": "group",
        "Properties": {
            "ID": "workers",
            "Properties": {
                "Allocation": {
                    "Size": {{ $workerSize }}
                },
                "Flavor": {
		    "Plugin" : "combo",
		    "Properties" : [
			    {
				"Plugin": "swarm/worker",
				"Properties": {
				    "InitScriptTemplateURL": "{{ $workerInit }}",
				    "SwarmJoinIP": "{{ $swarmLeaderIP }}",
				    "Docker" : {
					"Host" : "{{ $dockerEngine }}"
				    }
				}
			    },
			    {
				"Plugin": "kubernetes/worker",
				"Properties": {
				    "InitScriptTemplateURL": "{{ var `/infrakit/config/root` }}/kube-workers-init.sh",
				    "KubeBindPort": 6443,
				    "KubeJoinIP": "{{ var `/cluster/kube/join/ip` }}",
				    "KubeClusterID" : "{{ var `/cluster/name`}}",
				    "SkipManagerValidation" : true
				}

			    }
			]
                },
                "Instance": {{ $myGroups.Workers | jsonEncode }}
            }
        }
    }
]