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// The ebsvolume package contains a packer.Builder implementation that
// builds EBS volumes for Amazon EC2 using an ephemeral instance,
package ebsvolume
import (
"fmt"
"log"
"github.com/aws/aws-sdk-go/service/ec2"
awscommon "github.com/hashicorp/packer/builder/amazon/common"
"github.com/hashicorp/packer/common"
"github.com/hashicorp/packer/helper/communicator"
"github.com/hashicorp/packer/helper/config"
"github.com/hashicorp/packer/packer"
"github.com/hashicorp/packer/template/interpolate"
"github.com/mitchellh/multistep"
)
const BuilderId = "mitchellh.amazon.ebsvolume"
type Config struct {
common.PackerConfig `mapstructure:",squash"`
awscommon.AccessConfig `mapstructure:",squash"`
awscommon.RunConfig `mapstructure:",squash"`
VolumeMappings []BlockDevice `mapstructure:"ebs_volumes"`
AMIENASupport bool `mapstructure:"ena_support"`
AMISriovNetSupport bool `mapstructure:"sriov_support"`
launchBlockDevices awscommon.BlockDevices
ctx interpolate.Context
}
type Builder struct {
config Config
runner multistep.Runner
}
func (b *Builder) Prepare(raws ...interface{}) ([]string, error) {
b.config.ctx.Funcs = awscommon.TemplateFuncs
err := config.Decode(&b.config, &config.DecodeOpts{
Interpolate: true,
InterpolateContext: &b.config.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"run_tags",
"ebs_volumes",
},
},
}, raws...)
if err != nil {
return nil, err
}
// Accumulate any errors
var errs *packer.MultiError
errs = packer.MultiErrorAppend(errs, b.config.AccessConfig.Prepare(&b.config.ctx)...)
errs = packer.MultiErrorAppend(errs, b.config.RunConfig.Prepare(&b.config.ctx)...)
b.config.launchBlockDevices, err = commonBlockDevices(b.config.VolumeMappings, &b.config.ctx)
if err != nil {
errs = packer.MultiErrorAppend(errs, err)
}
if errs != nil && len(errs.Errors) > 0 {
return nil, errs
}
log.Println(common.ScrubConfig(b.config, b.config.AccessKey, b.config.SecretKey))
return nil, nil
}
func (b *Builder) Run(ui packer.Ui, hook packer.Hook, cache packer.Cache) (packer.Artifact, error) {
session, err := b.config.Session()
if err != nil {
return nil, err
}
ec2conn := ec2.New(session)
// If the subnet is specified but not the VpcId or AZ, try to determine them automatically
if b.config.SubnetId != "" && (b.config.AvailabilityZone == "" || b.config.VpcId == "") {
log.Printf("[INFO] Finding AZ and VpcId for the given subnet '%s'", b.config.SubnetId)
resp, err := ec2conn.DescribeSubnets(&ec2.DescribeSubnetsInput{SubnetIds: []*string{&b.config.SubnetId}})
if err != nil {
return nil, err
}
if b.config.AvailabilityZone == "" {
b.config.AvailabilityZone = *resp.Subnets[0].AvailabilityZone
log.Printf("[INFO] AvailabilityZone found: '%s'", b.config.AvailabilityZone)
}
if b.config.VpcId == "" {
b.config.VpcId = *resp.Subnets[0].VpcId
log.Printf("[INFO] VpcId found: '%s'", b.config.VpcId)
}
}
// Setup the state bag and initial state for the steps
state := new(multistep.BasicStateBag)
state.Put("config", b.config)
state.Put("ec2", ec2conn)
state.Put("hook", hook)
state.Put("ui", ui)
// Build the steps
steps := []multistep.Step{
&awscommon.StepSourceAMIInfo{
SourceAmi: b.config.SourceAmi,
EnableAMISriovNetSupport: b.config.AMISriovNetSupport,
EnableAMIENASupport: b.config.AMIENASupport,
AmiFilters: b.config.SourceAmiFilter,
},
&awscommon.StepKeyPair{
Debug: b.config.PackerDebug,
SSHAgentAuth: b.config.Comm.SSHAgentAuth,
DebugKeyPath: fmt.Sprintf("ec2_%s.pem", b.config.PackerBuildName),
KeyPairName: b.config.SSHKeyPairName,
TemporaryKeyPairName: b.config.TemporaryKeyPairName,
PrivateKeyFile: b.config.RunConfig.Comm.SSHPrivateKey,
},
&awscommon.StepSecurityGroup{
SecurityGroupIds: b.config.SecurityGroupIds,
CommConfig: &b.config.RunConfig.Comm,
VpcId: b.config.VpcId,
},
&awscommon.StepRunSourceInstance{
Debug: b.config.PackerDebug,
ExpectedRootDevice: "ebs",
SpotPrice: b.config.SpotPrice,
SpotPriceProduct: b.config.SpotPriceAutoProduct,
InstanceType: b.config.InstanceType,
UserData: b.config.UserData,
UserDataFile: b.config.UserDataFile,
SourceAMI: b.config.SourceAmi,
IamInstanceProfile: b.config.IamInstanceProfile,
SubnetId: b.config.SubnetId,
AssociatePublicIpAddress: b.config.AssociatePublicIpAddress,
EbsOptimized: b.config.EbsOptimized,
AvailabilityZone: b.config.AvailabilityZone,
BlockDevices: b.config.launchBlockDevices,
Tags: b.config.RunTags,
Ctx: b.config.ctx,
InstanceInitiatedShutdownBehavior: b.config.InstanceInitiatedShutdownBehavior,
},
&stepTagEBSVolumes{
VolumeMapping: b.config.VolumeMappings,
Ctx: b.config.ctx,
},
&awscommon.StepGetPassword{
Debug: b.config.PackerDebug,
Comm: &b.config.RunConfig.Comm,
Timeout: b.config.WindowsPasswordTimeout,
},
&communicator.StepConnect{
Config: &b.config.RunConfig.Comm,
Host: awscommon.SSHHost(
ec2conn,
b.config.SSHPrivateIp),
SSHConfig: awscommon.SSHConfig(
b.config.RunConfig.Comm.SSHAgentAuth,
b.config.RunConfig.Comm.SSHUsername,
b.config.RunConfig.Comm.SSHPassword),
},
&common.StepProvision{},
&awscommon.StepStopEBSBackedInstance{
SpotPrice: b.config.SpotPrice,
DisableStopInstance: b.config.DisableStopInstance,
},
&awscommon.StepModifyEBSBackedInstance{
EnableAMISriovNetSupport: b.config.AMISriovNetSupport,
EnableAMIENASupport: b.config.AMIENASupport,
},
}
// Run!
b.runner = common.NewRunner(steps, b.config.PackerConfig, ui)
b.runner.Run(state)
// If there was an error, return that
if rawErr, ok := state.GetOk("error"); ok {
return nil, rawErr.(error)
}
// Build the artifact and return it
artifact := &Artifact{
Volumes: state.Get("ebsvolumes").(EbsVolumes),
BuilderIdValue: BuilderId,
Conn: ec2conn,
}
ui.Say(fmt.Sprintf("Created Volumes: %s", artifact))
return artifact, nil
}
func (b *Builder) Cancel() {
if b.runner != nil {
log.Println("Cancelling the step runner...")
b.runner.Cancel()
}
}
|