github.com/mattyw/juju@v0.0.0-20140610034352-732aecd63861/worker/provisioner/lxc-broker.go (about)

     1  // Copyright 2013 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package provisioner
     5  
     6  import (
     7  	"fmt"
     8  
     9  	"github.com/juju/loggo"
    10  
    11  	"github.com/juju/juju/agent"
    12  	"github.com/juju/juju/container"
    13  	"github.com/juju/juju/container/lxc"
    14  	"github.com/juju/juju/environs"
    15  	"github.com/juju/juju/environs/network"
    16  	"github.com/juju/juju/instance"
    17  	"github.com/juju/juju/state/api/params"
    18  	"github.com/juju/juju/tools"
    19  )
    20  
    21  var lxcLogger = loggo.GetLogger("juju.provisioner.lxc")
    22  
    23  var _ environs.InstanceBroker = (*lxcBroker)(nil)
    24  var _ tools.HasTools = (*lxcBroker)(nil)
    25  
    26  type APICalls interface {
    27  	ContainerConfig() (params.ContainerConfig, error)
    28  }
    29  
    30  func NewLxcBroker(api APICalls, tools *tools.Tools, agentConfig agent.Config, managerConfig container.ManagerConfig) (environs.InstanceBroker, error) {
    31  	manager, err := lxc.NewContainerManager(managerConfig)
    32  	if err != nil {
    33  		return nil, err
    34  	}
    35  	return &lxcBroker{
    36  		manager:     manager,
    37  		api:         api,
    38  		tools:       tools,
    39  		agentConfig: agentConfig,
    40  	}, nil
    41  }
    42  
    43  type lxcBroker struct {
    44  	manager     container.Manager
    45  	api         APICalls
    46  	tools       *tools.Tools
    47  	agentConfig agent.Config
    48  }
    49  
    50  func (broker *lxcBroker) Tools(series string) tools.List {
    51  	// TODO: thumper 2014-04-08 bug 1304151
    52  	// should use the api get get tools for the series.
    53  	seriesTools := *broker.tools
    54  	seriesTools.Version.Series = series
    55  	return tools.List{&seriesTools}
    56  }
    57  
    58  // StartInstance is specified in the Broker interface.
    59  func (broker *lxcBroker) StartInstance(args environs.StartInstanceParams) (instance.Instance, *instance.HardwareCharacteristics, []network.Info, error) {
    60  	if args.MachineConfig.HasNetworks() {
    61  		return nil, nil, nil, fmt.Errorf("starting lxc containers with networks is not supported yet.")
    62  	}
    63  	// TODO: refactor common code out of the container brokers.
    64  	machineId := args.MachineConfig.MachineId
    65  	lxcLogger.Infof("starting lxc container for machineId: %s", machineId)
    66  
    67  	// Default to using the host network until we can configure.
    68  	bridgeDevice := broker.agentConfig.Value(agent.LxcBridge)
    69  	if bridgeDevice == "" {
    70  		bridgeDevice = lxc.DefaultLxcBridge
    71  	}
    72  	network := container.BridgeNetworkConfig(bridgeDevice)
    73  
    74  	series := args.Tools.OneSeries()
    75  	args.MachineConfig.MachineContainerType = instance.LXC
    76  	args.MachineConfig.Tools = args.Tools[0]
    77  
    78  	config, err := broker.api.ContainerConfig()
    79  	if err != nil {
    80  		lxcLogger.Errorf("failed to get container config: %v", err)
    81  		return nil, nil, nil, err
    82  	}
    83  	if err := environs.PopulateMachineConfig(
    84  		args.MachineConfig,
    85  		config.ProviderType,
    86  		config.AuthorizedKeys,
    87  		config.SSLHostnameVerification,
    88  		config.Proxy,
    89  		config.AptProxy,
    90  	); err != nil {
    91  		lxcLogger.Errorf("failed to populate machine config: %v", err)
    92  		return nil, nil, nil, err
    93  	}
    94  
    95  	inst, hardware, err := broker.manager.CreateContainer(args.MachineConfig, series, network)
    96  	if err != nil {
    97  		lxcLogger.Errorf("failed to start container: %v", err)
    98  		return nil, nil, nil, err
    99  	}
   100  	lxcLogger.Infof("started lxc container for machineId: %s, %s, %s", machineId, inst.Id(), hardware.String())
   101  	return inst, hardware, nil, nil
   102  }
   103  
   104  // StopInstances shuts down the given instances.
   105  func (broker *lxcBroker) StopInstances(ids ...instance.Id) error {
   106  	// TODO: potentially parallelise.
   107  	for _, id := range ids {
   108  		lxcLogger.Infof("stopping lxc container for instance: %s", id)
   109  		if err := broker.manager.DestroyContainer(id); err != nil {
   110  			lxcLogger.Errorf("container did not stop: %v", err)
   111  			return err
   112  		}
   113  	}
   114  	return nil
   115  }
   116  
   117  // AllInstances only returns running containers.
   118  func (broker *lxcBroker) AllInstances() (result []instance.Instance, err error) {
   119  	return broker.manager.ListContainers()
   120  }