func (l *Loader) resourceHandler(i *loader.TreeWalkItem) error {
contents, err := i.ReadBytes()
if err != nil {
return err
}
var a fi.Resource
key := i.RelativePath
if strings.HasSuffix(key, ".template") {
key = strings.TrimSuffix(key, ".template")
glog.V(2).Infof("loading (templated) resource %q", key)
a = &templateResource{
template: string(contents),
loader: l,
key: key,
}
} else {
glog.V(2).Infof("loading resource %q", key)
a = fi.NewBytesResource(contents)
}
l.Resources[key] = a
return nil
}
func (e *Instance) Find(c *fi.Context) (*Instance, error) {
cloud := c.Cloud.(*awsup.AWSCloud)
filters := cloud.BuildFilters(e.Name)
filters = append(filters, awsup.NewEC2Filter("instance-state-name", "pending", "running", "stopping", "stopped"))
request := &ec2.DescribeInstancesInput{
Filters: filters,
}
response, err := cloud.EC2.DescribeInstances(request)
if err != nil {
return nil, fmt.Errorf("error listing instances: %v", err)
}
instances := []*ec2.Instance{}
if response != nil {
for _, reservation := range response.Reservations {
for _, instance := range reservation.Instances {
instances = append(instances, instance)
}
}
}
if len(instances) == 0 {
return nil, nil
}
if len(instances) != 1 {
return nil, fmt.Errorf("found multiple Instances with name: %s", *e.Name)
}
glog.V(2).Info("found existing instance")
i := instances[0]
if i.InstanceId == nil {
return nil, fmt.Errorf("found instance, but InstanceId was nil")
}
actual := &Instance{
ID: i.InstanceId,
PrivateIPAddress: i.PrivateIpAddress,
InstanceType: i.InstanceType,
ImageID: i.ImageId,
Name: findNameTag(i.Tags),
}
// Fetch instance UserData
{
request := &ec2.DescribeInstanceAttributeInput{}
request.InstanceId = i.InstanceId
request.Attribute = aws.String("userData")
response, err := cloud.EC2.DescribeInstanceAttribute(request)
if err != nil {
return nil, fmt.Errorf("error querying EC2 for user metadata for instance %q: %v", *i.InstanceId)
}
if response.UserData != nil {
b, err := base64.StdEncoding.DecodeString(aws.StringValue(response.UserData.Value))
if err != nil {
return nil, fmt.Errorf("error decoding EC2 UserData: %v", err)
}
actual.UserData = fi.NewBytesResource(b)
}
}
if i.SubnetId != nil {
actual.Subnet = &Subnet{ID: i.SubnetId}
}
if i.KeyName != nil {
actual.SSHKey = &SSHKey{Name: i.KeyName}
}
for _, sg := range i.SecurityGroups {
actual.SecurityGroups = append(actual.SecurityGroups, &SecurityGroup{ID: sg.GroupId})
}
associatePublicIpAddress := false
for _, ni := range i.NetworkInterfaces {
if aws.StringValue(ni.Association.PublicIp) != "" {
associatePublicIpAddress = true
}
}
actual.AssociatePublicIP = &associatePublicIpAddress
if i.IamInstanceProfile != nil {
actual.IAMInstanceProfile = &IAMInstanceProfile{Name: nameFromIAMARN(i.IamInstanceProfile.Arn)}
}
actual.Tags = mapEC2TagsToMap(i.Tags)
e.ID = actual.ID
// Avoid spurious changes on ImageId
if e.ImageID != nil && actual.ImageID != nil && *actual.ImageID != *e.ImageID {
image, err := cloud.ResolveImage(*e.ImageID)
if err != nil {
glog.Warningf("unable to resolve image: %q: %v", *e.ImageID, err)
} else if image == nil {
glog.Warningf("unable to resolve image: %q: not found", *e.ImageID)
} else if aws.StringValue(image.ImageId) == *actual.ImageID {
glog.V(4).Infof("Returning matching ImageId as expected name: %q -> %q", *actual.ImageID, *e.ImageID)
actual.ImageID = e.ImageID
}
}
return actual, nil
}