Merge pull request #352 from packethost/packet-datasource

datasource: add packethost metadata

network/packet.go

@@ -0,0 +1,133 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package network
+
+import (
+	"encoding/json"
+	"net"
+
+	"github.com/coreos/coreos-cloudinit/datasource/metadata/packet"
+)
+
+func ProcessPacketNetconf(config []byte) ([]InterfaceGenerator, error) {
+	var netdata packet.NetworkData
+	if err := json.Unmarshal(config, &netdata); err != nil {
+		return nil, err
+	}
+
+	var nameservers []net.IP
+	if netdata.DNS != nil {
+		nameservers = netdata.DNS
+	} else {
+		nameservers = append(nameservers, net.ParseIP("8.8.8.8"), net.ParseIP("8.8.4.4"))
+	}
+
+	generators, err := parseNetwork(netdata, nameservers)
+	if err != nil {
+		return nil, err
+	}
+
+	return generators, nil
+}
+
+func parseNetwork(netdata packet.NetworkData, nameservers []net.IP) ([]InterfaceGenerator, error) {
+	var interfaces []InterfaceGenerator
+	var addresses []net.IPNet
+	var routes []route
+	for _, netblock := range netdata.Netblocks {
+		addresses = append(addresses, net.IPNet{
+			IP:   netblock.Address,
+			Mask: net.IPMask(netblock.Netmask),
+		})
+		if netblock.Public == false {
+			routes = append(routes, route{
+				destination: net.IPNet{
+					IP:   net.IPv4(10, 0, 0, 0),
+					Mask: net.IPv4Mask(255, 0, 0, 0),
+				},
+				gateway: netblock.Gateway,
+			})
+		} else {
+			if netblock.AddressFamily == 4 {
+				routes = append(routes, route{
+					destination: net.IPNet{
+						IP:   net.IPv4zero,
+						Mask: net.IPMask(net.IPv4zero),
+					},
+					gateway: netblock.Gateway,
+				})
+			} else {
+				routes = append(routes, route{
+					destination: net.IPNet{
+						IP:   net.IPv6zero,
+						Mask: net.IPMask(net.IPv6zero),
+					},
+					gateway: netblock.Gateway,
+				})
+			}
+		}
+	}
+
+	bond := bondInterface{
+		logicalInterface: logicalInterface{
+			name: "bond0",
+			config: configMethodStatic{
+				addresses:   addresses,
+				nameservers: nameservers,
+				routes:      routes,
+			},
+		},
+		options: map[string]string{
+			"Mode":             "802.3ad",
+			"LACPTransmitRate": "fast",
+			"MIIMonitorSec":    ".2",
+			"UpDelaySec":       ".2",
+			"DownDelaySec":     ".2",
+		},
+	}
+
+	for _, iface := range netdata.Interfaces {
+		if iface.Name != "chassis0" && iface.Name != "ipmi0" {
+			bond.slaves = append(bond.slaves, iface.Name)
+			if iface.Name == "enp1s0f0" {
+				bond.hwaddr, _ = net.ParseMAC(iface.Mac)
+			}
+		}
+	}
+
+	for _, iface := range netdata.Interfaces {
+		if iface.Name != "chassis0" && iface.Name != "ipmi0" {
+			p := physicalInterface{
+				logicalInterface: logicalInterface{
+					name: iface.Name,
+					config: configMethodStatic{
+						nameservers: nameservers,
+					},
+					children: []networkInterface{&bond},
+				},
+			}
+
+			if iface.Name == "enp1s0f0" {
+				p.configDepth = 20
+			}
+
+			interfaces = append(interfaces, &p)
+		}
+	}
+
+	interfaces = append(interfaces, &bond)
+
+	return interfaces, nil
+}