# Generated by confd
router id {{getenv "IP"}};

# Watch interface up/down events.
protocol device {
  scan time 2;    # Scan interfaces every 2 seconds
}

# Template for all BGP clients
template bgp bgp_template {
  debug off;
  description "Connection to BGP peer";
  multihop;
  import all;        # Import all routes, since we don't know what the upstream
                     # topology is and therefore have to trust the ToR/RR.
  export all;        # Export all.
  source address {{getenv "IP"}};  # The local address we use for the TCP connection
  graceful restart;  # See comment in kernel section about graceful restart.
}

{{$our_rr_key := printf "/rr_v4/%s" (getenv "IP")}}
{{if ls $our_rr_key}}{{$our_rr_data := json (getv $our_rr_key)}}


{{if ls "/ospf_to_hosts"}}

# import direct interfaces
protocol direct {
  debug { states };
  interface -"cali*", -"docker*", "*";
}

# Synchronize them with the kernel
protocol kernel kern1 {
  export all;
}


# OSPF Export filters
filter export_OSPF {
  if ( net ~ 172.27.64.0/18 ) then {
    print "export: net accepted:", net;
    accept;
  }
  print "export: net rejected:", net;
  reject;
}

filter import_OSPF {
  print "import: net rejected:", net;
  reject;
}

protocol ospf pods_ospf {
  debug all;
  export filter export_OSPF;
  import filter import_OSPF;
  area 0.0.0.0 {
    interface "eth*" {
      hello 10;
      retransmit 5;
      cost 10;
      transmit delay 1;
      dead count 4;
      wait 40;
      type ptp;
      strict ptp yes;
      authentication none;
      priority 0;
      neighbors {
        {{range gets "/ospf_to_hosts/*"}}{{$ohost := json .Value}}{{$ohost.IP}}{{if $ohost.eligible}} eligible{{end}};{{ end }}
      };
    };
  };
}

{{ end }}




# ------------- RR-to-RR full mesh -------------
{{if ls "/rr_v4"}}
{{range gets "/rr_v4/*"}}{{$data := json .Value}}{{$rr_ip := $data.ip}}
{{$nums := split $rr_ip "."}}{{$id := join $nums "_"}}
# For RR {{$rr_ip}}
{{if eq $rr_ip (getenv "IP") }}# Skipping ourselves
{{else if ne "" $rr_ip}}protocol bgp Mesh_{{$id}} from bgp_template {
  local as {{getv "/global/as_num"}};
  neighbor {{$rr_ip}} as {{getv "/global/as_num"}};
}{{end}}{{end}}
{{end}}


# ------------- RR as a global peer -------------
{{if ls "/global/peer_v4"}}
{{range gets "/global/peer_v4/*"}}{{$data := json .Value}}
{{if eq $data.ip (getenv "IP")}}
# This RR is a global peer with *all* calico nodes.
{{range $cnode := lsdir "/host"}}
{{$cnode_as_key := printf "/host/%s/as_num" $cnode}}
{{$cnode_ip_key := printf "/host/%s/ip_addr_v4" $cnode}}{{$cnode_ip := getv $cnode_ip_key}}
{{$nums := split $cnode_ip "."}}{{$id := join $nums "_"}}
# Peering with Calico node {{$cnode}}
protocol bgp Global_{{$id}} from bgp_template {
  local as {{$data.as_num}};
  neighbor {{$cnode_ip}} as {{if exists $cnode_as_key}}{{getv $cnode_as_key}}{{else}}{{getv "/global/as_num"}}{{end}};
  rr client;
  {{if $our_rr_data.cluster_id}}rr cluster id {{$our_rr_data.cluster_id}};{{end}}
}
{{end}}
{{end}}
{{end}}
{{end}}


# ------------- RR as a node-specific peer -------------
{{range $cnode := lsdir "/host"}}
{{$node_peers_key := printf "/host/%s/peer_v4" $cnode}}
{{if ls $node_peers_key}}
{{range $peer := gets (printf "%s/*" $node_peers_key)}}{{$data := json $peer.Value}}
{{if eq $data.ip (getenv "IP")}}
{{$cnode_as_key := printf "/host/%s/as_num" $cnode}}
{{$cnode_ip_key := printf "/host/%s/ip_addr_v4" $cnode}}{{$cnode_ip := getv $cnode_ip_key}}
{{$nums := split $cnode_ip "."}}{{$id := join $nums "_"}}
# RR configured as a specific peer for calico node {{$peer.Key}}
protocol bgp Node_{{$id}} from bgp_template {
  local as {{$data.as_num}};
  neighbor {{$cnode_ip}} as {{if exists $cnode_as_key}}{{getv $cnode_as_key}}{{else}}{{getv "/global/as_num"}}{{end}};
  rr client;
  {{if $our_rr_data.cluster_id}}rr cluster id {{$our_rr_data.cluster_id}};{{end}}
}
{{end}}
{{end}}
{{end}}
{{end}}

{{end}}