refactored step_ami_region_copy to fix bugs and clarify assumptions; added more tests for that step.
fix race condition caused by variable declaration outside of loop
This commit is contained in:
parent
39a4da4d07
commit
54d2ad5028
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@ -93,7 +93,7 @@ func (b *BlockDevice) Prepare(ctx *interpolate.Context) error {
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return fmt.Errorf("The `device_name` must be specified " +
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"for every device in the block device mapping.")
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}
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// Warn that encrypted must be true when setting kms_key_id
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// Warn that encrypted must be true or nil when setting kms_key_id
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if b.KmsKeyId != "" && b.Encrypted != nil && *b.Encrypted == false {
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return fmt.Errorf("The device %v, must also have `encrypted: "+
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"true` when setting a kms_key_id.", b.DeviceName)
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@ -26,7 +26,7 @@ type StepAMIRegionCopy struct {
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AMISkipBuildRegion bool
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}
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func (s *StepAMIRegionCopy) DeduplicateRegions() {
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func (s *StepAMIRegionCopy) DeduplicateRegions(intermediary bool) {
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// Deduplicates regions by looping over the list of regions and storing
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// the regions as keys in a map. This saves users from accidentally copying
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// regions twice if they've added a region to a map twice.
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@ -34,10 +34,24 @@ func (s *StepAMIRegionCopy) DeduplicateRegions() {
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RegionMap := map[string]bool{}
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RegionSlice := []string{}
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// Original build region may or may not be present in the Regions list, so
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// let's make absolutely sure it's in our map.
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RegionMap[s.OriginalRegion] = true
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for _, r := range s.Regions {
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RegionMap[r] = true
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}
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if !intermediary || s.AMISkipBuildRegion {
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// We don't want to copy back into the original region if we aren't
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// using an intermediary image, so remove the original region from our
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// map.
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// We also don't want to copy back into the original region if the
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// intermediary image is because we're skipping the build region.
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delete(RegionMap, s.OriginalRegion)
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}
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// Now print all those keys into the region slice again
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for k, _ := range RegionMap {
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RegionSlice = append(RegionSlice, k)
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@ -50,35 +64,27 @@ func (s *StepAMIRegionCopy) Run(ctx context.Context, state multistep.StateBag) m
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ui := state.Get("ui").(packer.Ui)
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amis := state.Get("amis").(map[string]string)
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snapshots := state.Get("snapshots").(map[string][]string)
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intermediary := state.Get("intermediary_image").(bool)
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s.DeduplicateRegions(intermediary)
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ami := amis[s.OriginalRegion]
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// Always copy back into original region to preserve the ami name
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if s.EncryptBootVolume != nil || s.AMISkipBuildRegion {
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// if we haven't specificed encryption and we aren't skipping the save
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// to the build region, we don't have anything to delete
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// Make a note to delete the intermediary AMI if necessary.
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if intermediary {
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s.toDelete = ami
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}
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if s.EncryptBootVolume != nil {
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if !s.AMISkipBuildRegion {
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s.Regions = append(s.Regions, s.OriginalRegion)
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if s.EncryptBootVolume != nil && *s.EncryptBootVolume {
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// encrypt_boot is true, so we have to copy the temporary
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// AMI with required encryption setting.
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// temp image was created by stepCreateAMI.
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if s.RegionKeyIds == nil {
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s.RegionKeyIds = make(map[string]string)
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}
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// Now that we've added OriginalRegion, best to make sure there aren't
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// any duplicates hanging around; duplicates will waste time.
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s.DeduplicateRegions()
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if *s.EncryptBootVolume {
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// encrypt_boot is true, so we have to copy the temporary
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// AMI with required encryption setting.
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// temp image was created by stepCreateAMI.
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if s.RegionKeyIds == nil {
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s.RegionKeyIds = make(map[string]string)
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}
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// Make sure the kms_key_id for the original region is in the map
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if _, ok := s.RegionKeyIds[s.OriginalRegion]; !ok {
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s.RegionKeyIds[s.OriginalRegion] = s.AMIKmsKeyId
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}
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// Make sure the kms_key_id for the original region is in the map
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if _, ok := s.RegionKeyIds[s.OriginalRegion]; !ok {
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s.RegionKeyIds[s.OriginalRegion] = s.AMIKmsKeyId
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}
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}
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@ -90,15 +96,18 @@ func (s *StepAMIRegionCopy) Run(ctx context.Context, state multistep.StateBag) m
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var lock sync.Mutex
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var wg sync.WaitGroup
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var regKeyID string
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errs := new(packer.MultiError)
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wg.Add(len(s.Regions))
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for _, region := range s.Regions {
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var regKeyID string
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ui.Message(fmt.Sprintf("Copying to: %s", region))
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if s.EncryptBootVolume != nil && *s.EncryptBootVolume {
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// Encrypt is true, explicitly
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regKeyID = s.RegionKeyIds[region]
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} else {
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// Encrypt is nil or false; Make sure region key is empty
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regKeyID = ""
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}
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go func(region string) {
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@ -4,6 +4,7 @@ import (
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"bytes"
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"context"
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"fmt"
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"sync"
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"testing"
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"github.com/aws/aws-sdk-go/aws"
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@ -25,10 +26,14 @@ type mockEC2Conn struct {
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deregisterImageCount int
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deleteSnapshotCount int
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waitCount int
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lock sync.Mutex
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}
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func (m *mockEC2Conn) CopyImage(copyInput *ec2.CopyImageInput) (*ec2.CopyImageOutput, error) {
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m.lock.Lock()
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m.copyImageCount++
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m.lock.Unlock()
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copiedImage := fmt.Sprintf("%s-copied-%d", *copyInput.SourceImageId, m.copyImageCount)
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output := &ec2.CopyImageOutput{
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ImageId: &copiedImage,
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@ -38,7 +43,9 @@ func (m *mockEC2Conn) CopyImage(copyInput *ec2.CopyImageInput) (*ec2.CopyImageOu
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// functions we have to create mock responses for in order for test to run
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func (m *mockEC2Conn) DescribeImages(*ec2.DescribeImagesInput) (*ec2.DescribeImagesOutput, error) {
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m.lock.Lock()
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m.describeImagesCount++
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m.lock.Unlock()
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output := &ec2.DescribeImagesOutput{
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Images: []*ec2.Image{{}},
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}
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@ -46,19 +53,25 @@ func (m *mockEC2Conn) DescribeImages(*ec2.DescribeImagesInput) (*ec2.DescribeIma
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}
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func (m *mockEC2Conn) DeregisterImage(*ec2.DeregisterImageInput) (*ec2.DeregisterImageOutput, error) {
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m.lock.Lock()
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m.deregisterImageCount++
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m.lock.Unlock()
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output := &ec2.DeregisterImageOutput{}
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return output, nil
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}
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func (m *mockEC2Conn) DeleteSnapshot(*ec2.DeleteSnapshotInput) (*ec2.DeleteSnapshotOutput, error) {
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m.lock.Lock()
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m.deleteSnapshotCount++
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m.lock.Unlock()
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output := &ec2.DeleteSnapshotOutput{}
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return output, nil
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}
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func (m *mockEC2Conn) WaitUntilImageAvailableWithContext(aws.Context, *ec2.DescribeImagesInput, ...request.WaiterOption) error {
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m.lock.Lock()
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m.waitCount++
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m.lock.Unlock()
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return nil
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}
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@ -84,6 +97,128 @@ func tState() multistep.StateBag {
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return state
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}
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func TestStepAMIRegionCopy_duplicates(t *testing.T) {
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// ------------------------------------------------------------------------
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// Test that if the original region is added to both Regions and Region,
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// the ami is only copied once (with encryption).
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// ------------------------------------------------------------------------
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stepAMIRegionCopy := StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: []string{"us-east-1"},
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AMIKmsKeyId: "12345",
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// Original region key in regionkeyids is different than in amikmskeyid
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RegionKeyIds: map[string]string{"us-east-1": "12345"},
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EncryptBootVolume: aws.Bool(true),
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state := tState()
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state.Put("intermediary_image", true)
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stepAMIRegionCopy.Run(context.Background(), state)
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if len(stepAMIRegionCopy.Regions) != 1 {
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t.Fatalf("Should have added original ami to Regions one time only")
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}
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// ------------------------------------------------------------------------
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// Both Region and Regions set, but no encryption - shouldn't copy anything
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// ------------------------------------------------------------------------
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// the ami is only copied once.
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: []string{"us-east-1"},
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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state.Put("intermediary_image", false)
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stepAMIRegionCopy.getRegionConn = getMockConn
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stepAMIRegionCopy.Run(context.Background(), state)
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if len(stepAMIRegionCopy.Regions) != 0 {
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t.Fatalf("Should not have added original ami to Regions; not encrypting")
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}
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// ------------------------------------------------------------------------
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// Both Region and Regions set, but no encryption - shouldn't copy anything,
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// this tests false as opposed to nil value above.
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// ------------------------------------------------------------------------
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// the ami is only copied once.
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: []string{"us-east-1"},
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EncryptBootVolume: aws.Bool(false),
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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state.Put("intermediary_image", false)
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stepAMIRegionCopy.getRegionConn = getMockConn
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stepAMIRegionCopy.Run(context.Background(), state)
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if len(stepAMIRegionCopy.Regions) != 0 {
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t.Fatalf("Should not have added original ami to Regions once; not" +
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"encrypting")
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}
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// ------------------------------------------------------------------------
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// Multiple regions, many duplicates, and encryption (this shouldn't ever
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// happen because of our template validation, but good to test it.)
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// ------------------------------------------------------------------------
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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// Many duplicates for only 3 actual values
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Regions: []string{"us-east-1", "us-west-2", "us-west-2", "ap-east-1", "ap-east-1", "ap-east-1"},
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AMIKmsKeyId: "IlikePancakes",
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// Original region key in regionkeyids is different than in amikmskeyid
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RegionKeyIds: map[string]string{"us-east-1": "12345", "us-west-2": "abcde", "ap-east-1": "xyz"},
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EncryptBootVolume: aws.Bool(true),
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state.Put("intermediary_image", true)
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stepAMIRegionCopy.Run(context.Background(), state)
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if len(stepAMIRegionCopy.Regions) != 3 {
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t.Fatalf("Each AMI should have been added to Regions one time only.")
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}
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// Also verify that we respect RegionKeyIds over AMIKmsKeyIds:
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if stepAMIRegionCopy.RegionKeyIds["us-east-1"] != "12345" {
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t.Fatalf("RegionKeyIds should take precedence over AmiKmsKeyIds")
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}
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// ------------------------------------------------------------------------
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// Multiple regions, many duplicates, NO encryption
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// ------------------------------------------------------------------------
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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// Many duplicates for only 3 actual values
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Regions: []string{"us-east-1", "us-west-2", "us-west-2", "ap-east-1", "ap-east-1", "ap-east-1"},
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state.Put("intermediary_image", false)
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stepAMIRegionCopy.Run(context.Background(), state)
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if len(stepAMIRegionCopy.Regions) != 2 {
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t.Fatalf("Each AMI should have been added to Regions one time only, " +
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"and original region shouldn't be added at all")
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}
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}
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func TestStepAmiRegionCopy_nil_encryption(t *testing.T) {
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// create step
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stepAMIRegionCopy := StepAMIRegionCopy{
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@ -99,6 +234,7 @@ func TestStepAmiRegionCopy_nil_encryption(t *testing.T) {
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stepAMIRegionCopy.getRegionConn = getMockConn
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state := tState()
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state.Put("intermediary_image", false)
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete != "" {
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@ -109,31 +245,6 @@ func TestStepAmiRegionCopy_nil_encryption(t *testing.T) {
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}
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}
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func TestStepAmiRegionCopy_false_encryption(t *testing.T) {
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// create step
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stepAMIRegionCopy := StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: make([]string, 0),
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AMIKmsKeyId: "",
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RegionKeyIds: make(map[string]string),
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EncryptBootVolume: aws.Bool(false),
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state := tState()
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete != "ami-12345" {
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t.Fatalf("should be deleting the original intermediary ami")
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}
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if len(stepAMIRegionCopy.Regions) == 0 {
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t.Fatalf("Should have added original ami to Regions")
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}
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}
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func TestStepAmiRegionCopy_true_encryption(t *testing.T) {
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// create step
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stepAMIRegionCopy := StepAMIRegionCopy{
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@ -149,6 +260,7 @@ func TestStepAmiRegionCopy_true_encryption(t *testing.T) {
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stepAMIRegionCopy.getRegionConn = getMockConn
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state := tState()
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state.Put("intermediary_image", true)
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete == "" {
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@ -159,13 +271,16 @@ func TestStepAmiRegionCopy_true_encryption(t *testing.T) {
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}
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}
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func TestStepAmiRegionCopy_true_AMISkipBuildRegion(t *testing.T) {
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// create step
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func TestStepAmiRegionCopy_AMISkipBuildRegion(t *testing.T) {
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// ------------------------------------------------------------------------
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// skip build region is true
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// ------------------------------------------------------------------------
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stepAMIRegionCopy := StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: make([]string, 0),
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Regions: []string{"us-west-1"},
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AMIKmsKeyId: "",
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RegionKeyIds: make(map[string]string),
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RegionKeyIds: map[string]string{"us-west-1": "abcde"},
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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AMISkipBuildRegion: true,
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@ -174,12 +289,90 @@ func TestStepAmiRegionCopy_true_AMISkipBuildRegion(t *testing.T) {
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stepAMIRegionCopy.getRegionConn = getMockConn
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state := tState()
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state.Put("intermediary_image", true)
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete == "" {
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t.Fatalf("Should delete original AMI if skip_save_build_region=true")
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}
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if len(stepAMIRegionCopy.Regions) != 0 {
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t.Fatalf("Should not have added original ami to Regions")
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if len(stepAMIRegionCopy.Regions) != 1 {
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t.Fatalf("Should not have added original ami to Regions; Regions: %#v", stepAMIRegionCopy.Regions)
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}
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// ------------------------------------------------------------------------
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// skip build region is false.
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// ------------------------------------------------------------------------
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: []string{"us-west-1"},
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AMIKmsKeyId: "",
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RegionKeyIds: make(map[string]string),
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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AMISkipBuildRegion: false,
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state.Put("intermediary_image", false) // not encrypted
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete != "" {
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t.Fatalf("Shouldn't have an intermediary AMI, so dont delete original ami")
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}
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if len(stepAMIRegionCopy.Regions) != 1 {
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t.Fatalf("Should not have added original ami to Regions; Regions: %#v", stepAMIRegionCopy.Regions)
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}
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// ------------------------------------------------------------------------
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// skip build region is false, but encrypt is true
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// ------------------------------------------------------------------------
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stepAMIRegionCopy = StepAMIRegionCopy{
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AccessConfig: testAccessConfig(),
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Regions: []string{"us-west-1"},
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AMIKmsKeyId: "",
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RegionKeyIds: map[string]string{"us-west-1": "abcde"},
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Name: "fake-ami-name",
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OriginalRegion: "us-east-1",
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AMISkipBuildRegion: false,
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EncryptBootVolume: aws.Bool(true),
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}
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// mock out the region connection code
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stepAMIRegionCopy.getRegionConn = getMockConn
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state.Put("intermediary_image", true) //encrypted
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stepAMIRegionCopy.Run(context.Background(), state)
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if stepAMIRegionCopy.toDelete == "" {
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t.Fatalf("Have to delete intermediary AMI")
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}
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if len(stepAMIRegionCopy.Regions) != 2 {
|
||||
t.Fatalf("Should have added original ami to Regions; Regions: %#v", stepAMIRegionCopy.Regions)
|
||||
}
|
||||
|
||||
// ------------------------------------------------------------------------
|
||||
// skip build region is true, and encrypt is true
|
||||
// ------------------------------------------------------------------------
|
||||
stepAMIRegionCopy = StepAMIRegionCopy{
|
||||
AccessConfig: testAccessConfig(),
|
||||
Regions: []string{"us-west-1"},
|
||||
AMIKmsKeyId: "",
|
||||
RegionKeyIds: map[string]string{"us-west-1": "abcde"},
|
||||
Name: "fake-ami-name",
|
||||
OriginalRegion: "us-east-1",
|
||||
AMISkipBuildRegion: true,
|
||||
EncryptBootVolume: aws.Bool(true),
|
||||
}
|
||||
// mock out the region connection code
|
||||
stepAMIRegionCopy.getRegionConn = getMockConn
|
||||
|
||||
state.Put("intermediary_image", true) //encrypted
|
||||
stepAMIRegionCopy.Run(context.Background(), state)
|
||||
|
||||
if stepAMIRegionCopy.toDelete == "" {
|
||||
t.Fatalf("Have to delete intermediary AMI")
|
||||
}
|
||||
if len(stepAMIRegionCopy.Regions) != 1 {
|
||||
t.Fatalf("Should not have added original ami to Regions; Regions: %#v", stepAMIRegionCopy.Regions)
|
||||
}
|
||||
}
|
||||
|
|
|
@ -26,9 +26,18 @@ func (s *stepCreateAMI) Run(ctx context.Context, state multistep.StateBag) multi
|
|||
|
||||
// Create the image
|
||||
amiName := config.AMIName
|
||||
if config.AMIEncryptBootVolume != nil || s.AMISkipBuildRegion {
|
||||
// Create a temporary image and then create a copy of it with the
|
||||
// correct encrypt_boot
|
||||
state.Put("intermediary_image", false)
|
||||
if config.AMIEncryptBootVolume != nil && *config.AMIEncryptBootVolume != false || s.AMISkipBuildRegion {
|
||||
state.Put("intermediary_image", true)
|
||||
|
||||
// From AWS SDK docs: You can encrypt a copy of an unencrypted snapshot,
|
||||
// but you cannot use it to create an unencrypted copy of an encrypted
|
||||
// snapshot. Your default CMK for EBS is used unless you specify a
|
||||
// non-default key using KmsKeyId.
|
||||
|
||||
// If encrypt_boot is nil or true, we need to create a temporary image
|
||||
// so that in step_region_copy, we can copy it with the correct
|
||||
// encryption
|
||||
amiName = random.AlphaNum(7)
|
||||
}
|
||||
|
||||
|
|
|
@ -198,6 +198,10 @@ each category, the available configuration keys are alphabetized.
|
|||
*KmsKeyId* in the [AWS API docs -
|
||||
CopyImage](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CopyImage.html).
|
||||
|
||||
This option supercedes the `kms_key_id` option -- if you set both, and they
|
||||
are different, Packer will respect the value in `region_kms_key_ids` for
|
||||
your build region and silently disregard the value provided in `kms_key_id`.
|
||||
|
||||
- `root_device_name` (string) - The root device name. For example, `xvda`.
|
||||
|
||||
- `mfa_code` (string) - The MFA
|
||||
|
|
|
@ -244,6 +244,10 @@ builder.
|
|||
*KmsKeyId* in the [AWS API docs -
|
||||
CopyImage](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CopyImage.html).
|
||||
|
||||
This option supercedes the `kms_key_id` option -- if you set both, and they
|
||||
are different, Packer will respect the value in `region_kms_key_ids` for
|
||||
your build region and silently disregard the value provided in `kms_key_id`.
|
||||
|
||||
- `run_tags` (object of key/value strings) - Tags to apply to the instance
|
||||
that is *launched* to create the AMI. These tags are *not* applied to the
|
||||
resulting AMI unless they're duplicated in `tags`. This is a [template
|
||||
|
|
|
@ -245,6 +245,10 @@ builder.
|
|||
*KmsKeyId* in the [AWS API docs -
|
||||
CopyImage](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CopyImage.html).
|
||||
|
||||
This option supercedes the `kms_key_id` option -- if you set both, and they
|
||||
are different, Packer will respect the value in `region_kms_key_ids` for
|
||||
your build region and silently disregard the value provided in `kms_key_id`.
|
||||
|
||||
- `run_tags` (object of key/value strings) - Tags to apply to the instance
|
||||
that is *launched* to create the AMI. These tags are *not* applied to the
|
||||
resulting AMI unless they're duplicated in `tags`. This is a [template
|
||||
|
|
|
@ -247,6 +247,10 @@ builder.
|
|||
*KmsKeyId* in the [AWS API docs -
|
||||
CopyImage](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CopyImage.html).
|
||||
|
||||
This option supercedes the `kms_key_id` option -- if you set both, and they
|
||||
are different, Packer will respect the value in `region_kms_key_ids` for
|
||||
your build region and silently disregard the value provided in `kms_key_id`.
|
||||
|
||||
- `run_tags` (object of key/value strings) - Tags to apply to the instance
|
||||
that is *launched* to create the AMI. These tags are *not* applied to the
|
||||
resulting AMI unless they're duplicated in `tags`. This is a [template
|
||||
|
|
Loading…
Reference in New Issue