github.com/coreos/mantle@v0.13.0/platform/machine/packet/cluster.go (about)

     1  // Copyright 2017 CoreOS, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package packet
    16  
    17  import (
    18  	"crypto/rand"
    19  	"fmt"
    20  	"os"
    21  	"path/filepath"
    22  
    23  	"github.com/coreos/mantle/platform"
    24  	"github.com/coreos/mantle/platform/api/packet"
    25  	"github.com/coreos/mantle/platform/conf"
    26  )
    27  
    28  type cluster struct {
    29  	*platform.BaseCluster
    30  	flight   *flight
    31  	sshKeyID string
    32  }
    33  
    34  func (pc *cluster) NewMachine(userdata *conf.UserData) (platform.Machine, error) {
    35  	conf, err := pc.RenderUserData(userdata, map[string]string{
    36  		"$public_ipv4":  "${COREOS_PACKET_IPV4_PUBLIC_0}",
    37  		"$private_ipv4": "${COREOS_PACKET_IPV4_PRIVATE_0}",
    38  	})
    39  	if err != nil {
    40  		return nil, err
    41  	}
    42  
    43  	vmname := pc.vmname()
    44  	// Stream the console somewhere temporary until we have a machine ID
    45  	consolePath := filepath.Join(pc.RuntimeConf().OutputDir, "console-"+vmname+".txt")
    46  	var cons *console
    47  	var pcons packet.Console // need a nil interface value if unused
    48  	if pc.sshKeyID != "" {
    49  		// We can only read the console if Packet has our SSH key
    50  		f, err := os.OpenFile(consolePath, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0666)
    51  		if err != nil {
    52  			return nil, err
    53  		}
    54  		cons = &console{
    55  			pc:   pc,
    56  			f:    f,
    57  			done: make(chan interface{}),
    58  		}
    59  		pcons = cons
    60  	}
    61  
    62  	// CreateDevice unconditionally closes console when done with it
    63  	device, err := pc.flight.api.CreateDevice(vmname, conf, pcons)
    64  	if err != nil {
    65  		return nil, err
    66  	}
    67  
    68  	mach := &machine{
    69  		cluster: pc,
    70  		device:  device,
    71  		console: cons,
    72  	}
    73  	mach.publicIP = pc.flight.api.GetDeviceAddress(device, 4, true)
    74  	mach.privateIP = pc.flight.api.GetDeviceAddress(device, 4, false)
    75  	if mach.publicIP == "" || mach.privateIP == "" {
    76  		mach.Destroy()
    77  		return nil, fmt.Errorf("couldn't find IP addresses for device")
    78  	}
    79  
    80  	dir := filepath.Join(pc.RuntimeConf().OutputDir, mach.ID())
    81  	if err := os.Mkdir(dir, 0777); err != nil {
    82  		mach.Destroy()
    83  		return nil, err
    84  	}
    85  
    86  	if cons != nil {
    87  		if err := os.Rename(consolePath, filepath.Join(dir, "console.txt")); err != nil {
    88  			mach.Destroy()
    89  			return nil, err
    90  		}
    91  	}
    92  
    93  	confPath := filepath.Join(dir, "user-data")
    94  	if err := conf.WriteFile(confPath); err != nil {
    95  		mach.Destroy()
    96  		return nil, err
    97  	}
    98  
    99  	if mach.journal, err = platform.NewJournal(dir); err != nil {
   100  		mach.Destroy()
   101  		return nil, err
   102  	}
   103  
   104  	if err := platform.StartMachine(mach, mach.journal); err != nil {
   105  		mach.Destroy()
   106  		return nil, err
   107  	}
   108  
   109  	pc.AddMach(mach)
   110  
   111  	return mach, nil
   112  }
   113  
   114  func (pc *cluster) vmname() string {
   115  	b := make([]byte, 5)
   116  	rand.Read(b)
   117  	return fmt.Sprintf("%s-%x", pc.Name()[0:13], b)
   118  }
   119  
   120  func (pc *cluster) Destroy() {
   121  	pc.BaseCluster.Destroy()
   122  	pc.flight.DelCluster(pc)
   123  }