Golang Instance.Tags方法代码示例

func TestFindInstancesByNodeName(t *testing.T) {
	awsServices := NewFakeAWSServices()

	nodeNameOne := "my-dns.internal"
	nodeNameTwo := "my-dns-two.internal"

	var tag ec2.Tag
	tag.Key = aws.String(TagNameKubernetesCluster)
	tag.Value = aws.String(TestClusterId)
	tags := []*ec2.Tag{&tag}

	var runningInstance ec2.Instance
	runningInstance.InstanceId = aws.String("i-running")
	runningInstance.PrivateDnsName = aws.String(nodeNameOne)
	runningInstance.State = &ec2.InstanceState{Code: aws.Int64(16), Name: aws.String("running")}
	runningInstance.Tags = tags

	var secondInstance ec2.Instance

	secondInstance.InstanceId = aws.String("i-running")
	secondInstance.PrivateDnsName = aws.String(nodeNameTwo)
	secondInstance.State = &ec2.InstanceState{Code: aws.Int64(48), Name: aws.String("running")}
	secondInstance.Tags = tags

	var terminatedInstance ec2.Instance
	terminatedInstance.InstanceId = aws.String("i-terminated")
	terminatedInstance.PrivateDnsName = aws.String(nodeNameOne)
	terminatedInstance.State = &ec2.InstanceState{Code: aws.Int64(48), Name: aws.String("terminated")}
	terminatedInstance.Tags = tags

	instances := []*ec2.Instance{&secondInstance, &runningInstance, &terminatedInstance}
	awsServices.instances = append(awsServices.instances, instances...)

	c, err := newAWSCloud(strings.NewReader("[global]"), awsServices)
	if err != nil {
		t.Errorf("Error building aws cloud: %v", err)
		return
	}

	nodeNames := []string{nodeNameOne}
	returnedInstances, errr := c.getInstancesByNodeNames(nodeNames)

	if errr != nil {
		t.Errorf("Failed to find instance: %v", err)
		return
	}

	if len(returnedInstances) != 1 {
		t.Errorf("Expected a single isntance but found: %v", returnedInstances)
	}

	if *returnedInstances[0].PrivateDnsName != nodeNameOne {
		t.Errorf("Expected node name %v but got %v", nodeNameOne, returnedInstances[0].PrivateDnsName)
	}
}

func NewFakeAWSServices() *FakeAWSServices {
	s := &FakeAWSServices{}
	s.availabilityZone = "us-east-1a"
	s.ec2 = &FakeEC2{aws: s}
	s.elb = &FakeELB{aws: s}
	s.asg = &FakeASG{aws: s}
	s.metadata = &FakeMetadata{aws: s}

	s.networkInterfacesMacs = []string{"aa:bb:cc:dd:ee:00", "aa:bb:cc:dd:ee:01"}
	s.networkInterfacesVpcIDs = []string{"vpc-mac0", "vpc-mac1"}

	s.instanceId = "i-self"
	s.privateDnsName = "ip-172-20-0-100.ec2.internal"
	var selfInstance ec2.Instance
	selfInstance.InstanceId = &s.instanceId
	selfInstance.PrivateDnsName = &s.privateDnsName
	s.instances = []*ec2.Instance{&selfInstance}

	var tag ec2.Tag
	tag.Key = aws.String(TagNameKubernetesCluster)
	tag.Value = aws.String(TestClusterId)
	selfInstance.Tags = []*ec2.Tag{&tag}

	return s
}

func TestFindInstanceByNodeNameExcludesTerminatedInstances(t *testing.T) {
	awsServices := NewFakeAWSServices()

	nodeName := "my-dns.internal"

	var tag ec2.Tag
	tag.Key = aws.String(TagNameKubernetesCluster)
	tag.Value = aws.String(TestClusterId)
	tags := []*ec2.Tag{&tag}

	var runningInstance ec2.Instance
	runningInstance.InstanceId = aws.String("i-running")
	runningInstance.PrivateDnsName = aws.String(nodeName)
	runningInstance.State = &ec2.InstanceState{Code: aws.Int64(16), Name: aws.String("running")}
	runningInstance.Tags = tags

	var terminatedInstance ec2.Instance
	terminatedInstance.InstanceId = aws.String("i-terminated")
	terminatedInstance.PrivateDnsName = aws.String(nodeName)
	terminatedInstance.State = &ec2.InstanceState{Code: aws.Int64(48), Name: aws.String("terminated")}
	terminatedInstance.Tags = tags

	instances := []*ec2.Instance{&terminatedInstance, &runningInstance}
	awsServices.instances = append(awsServices.instances, instances...)

	c, err := newAWSCloud(strings.NewReader("[global]"), awsServices)
	if err != nil {
		t.Errorf("Error building aws cloud: %v", err)
		return
	}

	instance, err := c.findInstanceByNodeName(nodeName)

	if err != nil {
		t.Errorf("Failed to find instance: %v", err)
		return
	}

	if *instance.InstanceId != "i-running" {
		t.Errorf("Expected running instance but got %v", *instance.InstanceId)
	}
}

func NewFakeAWSServices() *FakeAWSServices {
	s := &FakeAWSServices{}
	s.availabilityZone = "us-east-1a"
	s.ec2 = &FakeEC2{aws: s}
	s.elb = &FakeELB{aws: s}
	s.metadata = &FakeMetadata{aws: s}

	s.instanceId = "i-self"
	var selfInstance ec2.Instance
	selfInstance.InstanceID = &s.instanceId
	s.instances = []*ec2.Instance{&selfInstance}

	var tag ec2.Tag
	tag.Key = aws.String(TagNameKubernetesCluster)
	tag.Value = aws.String(TestClusterId)
	selfInstance.Tags = []*ec2.Tag{&tag}

	return s
}

func TestList(t *testing.T) {
	// TODO this setup is not very clean and could probably be improved
	var instance0 ec2.Instance
	var instance1 ec2.Instance
	var instance2 ec2.Instance
	var instance3 ec2.Instance

	//0
	tag0 := ec2.Tag{
		Key:   aws.String("Name"),
		Value: aws.String("foo"),
	}
	instance0.Tags = []*ec2.Tag{&tag0}
	instance0.InstanceID = aws.String("instance0")
	state0 := ec2.InstanceState{
		Name: aws.String("running"),
	}
	instance0.State = &state0

	//1
	tag1 := ec2.Tag{
		Key:   aws.String("Name"),
		Value: aws.String("bar"),
	}
	instance1.Tags = []*ec2.Tag{&tag1}
	instance1.InstanceID = aws.String("instance1")
	state1 := ec2.InstanceState{
		Name: aws.String("running"),
	}
	instance1.State = &state1

	//2
	tag2 := ec2.Tag{
		Key:   aws.String("Name"),
		Value: aws.String("baz"),
	}
	instance2.Tags = []*ec2.Tag{&tag2}
	instance2.InstanceID = aws.String("instance2")
	state2 := ec2.InstanceState{
		Name: aws.String("running"),
	}
	instance2.State = &state2

	//3
	tag3 := ec2.Tag{
		Key:   aws.String("Name"),
		Value: aws.String("quux"),
	}
	instance3.Tags = []*ec2.Tag{&tag3}
	instance3.InstanceID = aws.String("instance3")
	state3 := ec2.InstanceState{
		Name: aws.String("running"),
	}
	instance3.State = &state3

	instances := []*ec2.Instance{&instance0, &instance1, &instance2, &instance3}
	aws := mockInstancesResp(instances)

	table := []struct {
		input  string
		expect []string
	}{
		{"blahonga", []string{}},
		{"quux", []string{"instance3"}},
		{"a", []string{"instance1", "instance2"}},
	}

	for _, item := range table {
		result, err := aws.List(item.input)
		if err != nil {
			t.Errorf("Expected call with %v to succeed, failed with %s", item.input, err)
		}
		if e, a := item.expect, result; !reflect.DeepEqual(e, a) {
			t.Errorf("Expected %v, got %v", e, a)
		}
	}
}