github.com/rogpeppe/juju@v0.0.0-20140613142852-6337964b789e/container/kvm/live_test.go (about)

     1  // Copyright 2013 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package kvm_test
     5  
     6  import (
     7  	"fmt"
     8  	"os"
     9  	"runtime"
    10  
    11  	"github.com/juju/loggo"
    12  	gc "launchpad.net/gocheck"
    13  
    14  	"github.com/juju/juju/constraints"
    15  	"github.com/juju/juju/container"
    16  	"github.com/juju/juju/container/kvm"
    17  	"github.com/juju/juju/environs"
    18  	"github.com/juju/juju/environs/config"
    19  	"github.com/juju/juju/instance"
    20  	jujutesting "github.com/juju/juju/juju/testing"
    21  	coretesting "github.com/juju/juju/testing"
    22  	"github.com/juju/juju/tools"
    23  	"github.com/juju/juju/version"
    24  )
    25  
    26  type LiveSuite struct {
    27  	coretesting.BaseSuite
    28  	ContainerDir string
    29  	RemovedDir   string
    30  }
    31  
    32  var _ = gc.Suite(&LiveSuite{})
    33  
    34  func (s *LiveSuite) SetUpTest(c *gc.C) {
    35  	s.BaseSuite.SetUpTest(c)
    36  	// Skip if not linux
    37  	if runtime.GOOS != "linux" {
    38  		c.Skip("not running linux")
    39  	}
    40  	// Skip if not running as root.
    41  	if os.Getuid() != 0 {
    42  		c.Skip("not running as root")
    43  	}
    44  	s.ContainerDir = c.MkDir()
    45  	s.PatchValue(&container.ContainerDir, s.ContainerDir)
    46  	s.RemovedDir = c.MkDir()
    47  	s.PatchValue(&container.RemovedContainerDir, s.RemovedDir)
    48  	loggo.GetLogger("juju.container").SetLogLevel(loggo.TRACE)
    49  }
    50  
    51  func (s *LiveSuite) newManager(c *gc.C, name string) container.Manager {
    52  	manager, err := kvm.NewContainerManager(
    53  		container.ManagerConfig{
    54  			container.ConfigName:   name,
    55  			container.ConfigLogDir: c.MkDir(),
    56  		})
    57  	c.Assert(err, gc.IsNil)
    58  	return manager
    59  }
    60  
    61  func assertNumberOfContainers(c *gc.C, manager container.Manager, count int) {
    62  	containers, err := manager.ListContainers()
    63  	c.Assert(err, gc.IsNil)
    64  	c.Assert(containers, gc.HasLen, count)
    65  }
    66  
    67  func (s *LiveSuite) TestNoInitialContainers(c *gc.C) {
    68  	manager := s.newManager(c, "test")
    69  	assertNumberOfContainers(c, manager, 0)
    70  }
    71  
    72  func shutdownMachines(manager container.Manager) func(*gc.C) {
    73  	return func(c *gc.C) {
    74  		instances, err := manager.ListContainers()
    75  		c.Assert(err, gc.IsNil)
    76  		for _, instance := range instances {
    77  			err := manager.DestroyContainer(instance.Id())
    78  			c.Check(err, gc.IsNil)
    79  		}
    80  	}
    81  }
    82  
    83  func createContainer(c *gc.C, manager container.Manager, machineId string) instance.Instance {
    84  	machineNonce := "fake-nonce"
    85  	stateInfo := jujutesting.FakeStateInfo(machineId)
    86  	apiInfo := jujutesting.FakeAPIInfo(machineId)
    87  	machineConfig := environs.NewMachineConfig(machineId, machineNonce, nil, stateInfo, apiInfo)
    88  	network := container.BridgeNetworkConfig("virbr0")
    89  
    90  	machineConfig.Tools = &tools.Tools{
    91  		Version: version.MustParseBinary("2.3.4-foo-bar"),
    92  		URL:     "http://tools.testing.invalid/2.3.4-foo-bar.tgz",
    93  	}
    94  	environConfig := dummyConfig(c)
    95  	err := environs.FinishMachineConfig(machineConfig, environConfig, constraints.Value{})
    96  	c.Assert(err, gc.IsNil)
    97  
    98  	inst, hardware, err := manager.CreateContainer(machineConfig, "precise", network)
    99  	c.Assert(err, gc.IsNil)
   100  	c.Assert(hardware, gc.NotNil)
   101  	expected := fmt.Sprintf("arch=%s cpu-cores=1 mem=512M root-disk=8192M", version.Current.Arch)
   102  	c.Assert(hardware.String(), gc.Equals, expected)
   103  	return inst
   104  }
   105  
   106  func (s *LiveSuite) TestShutdownMachines(c *gc.C) {
   107  	manager := s.newManager(c, "test")
   108  	createContainer(c, manager, "1/kvm/0")
   109  	createContainer(c, manager, "1/kvm/1")
   110  	assertNumberOfContainers(c, manager, 2)
   111  
   112  	shutdownMachines(manager)(c)
   113  	assertNumberOfContainers(c, manager, 0)
   114  }
   115  
   116  func (s *LiveSuite) TestManagerIsolation(c *gc.C) {
   117  	firstManager := s.newManager(c, "first")
   118  	s.AddCleanup(shutdownMachines(firstManager))
   119  
   120  	createContainer(c, firstManager, "1/kvm/0")
   121  	createContainer(c, firstManager, "1/kvm/1")
   122  
   123  	secondManager := s.newManager(c, "second")
   124  	s.AddCleanup(shutdownMachines(secondManager))
   125  
   126  	createContainer(c, secondManager, "1/kvm/0")
   127  
   128  	assertNumberOfContainers(c, firstManager, 2)
   129  	assertNumberOfContainers(c, secondManager, 1)
   130  }
   131  
   132  func dummyConfig(c *gc.C) *config.Config {
   133  	testConfig, err := config.New(config.UseDefaults, coretesting.FakeConfig())
   134  	c.Assert(err, gc.IsNil)
   135  	testConfig, err = testConfig.Apply(map[string]interface{}{
   136  		"type":          "dummy",
   137  		"state-server":  false,
   138  		"agent-version": version.Current.Number.String(),
   139  	})
   140  	c.Assert(err, gc.IsNil)
   141  	return testConfig
   142  }