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2b23c402ee
Instance block devices are now managed by three distinct sub-resources: * `root_block_device` - introduced previously * `ebs_block_device` - all additional ebs-backed volumes * `ephemeral_block_device` - instance store / ephemeral devices The AWS API support around BlockDeviceMapping is pretty confusing. It's a single collection type that supports these three members each of which has different fields and different behavior. My biggest hiccup came from the fact that Instance Store volumes do not show up in any response BlockDeviceMapping for any EC2 `Describe*` API calls. They're only available from the instance meta-data service as queried from inside the node. This removes `block_device` altogether for a clean break from old configs. New configs will need to sort their `block_device` declarations into the three new types. The field has been marked `Removed` to indicate this to users. With the new block device format being introduced, we need to ensure Terraform is able to properly read statefiles written in the old format. So we use the new `helper/schema` facility of "state migrations" to transform statefiles in the old format to something that the current version of the schema can use. Fixes #858
136 lines
5.9 KiB
Go
136 lines
5.9 KiB
Go
package aws
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import (
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"testing"
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"github.com/hashicorp/terraform/terraform"
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)
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func TestAWSInstanceMigrateState(t *testing.T) {
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cases := map[string]struct {
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StateVersion int
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Attributes map[string]string
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Expected map[string]string
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Meta interface{}
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}{
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"v0.3.6 and earlier": {
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StateVersion: 0,
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Attributes: map[string]string{
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// EBS
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"block_device.#": "2",
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"block_device.3851383343.delete_on_termination": "true",
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"block_device.3851383343.device_name": "/dev/sdx",
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"block_device.3851383343.encrypted": "false",
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"block_device.3851383343.snapshot_id": "",
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"block_device.3851383343.virtual_name": "",
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"block_device.3851383343.volume_size": "5",
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"block_device.3851383343.volume_type": "standard",
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// Ephemeral
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"block_device.3101711606.delete_on_termination": "false",
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"block_device.3101711606.device_name": "/dev/sdy",
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"block_device.3101711606.encrypted": "false",
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"block_device.3101711606.snapshot_id": "",
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"block_device.3101711606.virtual_name": "ephemeral0",
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"block_device.3101711606.volume_size": "",
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"block_device.3101711606.volume_type": "",
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// Root
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"block_device.56575650.delete_on_termination": "true",
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"block_device.56575650.device_name": "/dev/sda1",
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"block_device.56575650.encrypted": "false",
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"block_device.56575650.snapshot_id": "",
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"block_device.56575650.volume_size": "10",
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"block_device.56575650.volume_type": "standard",
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},
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Expected: map[string]string{
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"ebs_block_device.#": "1",
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"ebs_block_device.3851383343.delete_on_termination": "true",
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"ebs_block_device.3851383343.device_name": "/dev/sdx",
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"ebs_block_device.3851383343.encrypted": "false",
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"ebs_block_device.3851383343.snapshot_id": "",
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"ebs_block_device.3851383343.volume_size": "5",
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"ebs_block_device.3851383343.volume_type": "standard",
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"ephemeral_block_device.#": "1",
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"ephemeral_block_device.2458403513.device_name": "/dev/sdy",
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"ephemeral_block_device.2458403513.virtual_name": "ephemeral0",
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"root_block_device.#": "1",
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"root_block_device.3018388612.delete_on_termination": "true",
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"root_block_device.3018388612.device_name": "/dev/sda1",
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"root_block_device.3018388612.snapshot_id": "",
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"root_block_device.3018388612.volume_size": "10",
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"root_block_device.3018388612.volume_type": "standard",
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},
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},
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"v0.3.7": {
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StateVersion: 0,
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Attributes: map[string]string{
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// EBS
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"block_device.#": "2",
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"block_device.3851383343.delete_on_termination": "true",
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"block_device.3851383343.device_name": "/dev/sdx",
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"block_device.3851383343.encrypted": "false",
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"block_device.3851383343.snapshot_id": "",
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"block_device.3851383343.virtual_name": "",
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"block_device.3851383343.volume_size": "5",
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"block_device.3851383343.volume_type": "standard",
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"block_device.3851383343.iops": "",
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// Ephemeral
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"block_device.3101711606.delete_on_termination": "false",
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"block_device.3101711606.device_name": "/dev/sdy",
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"block_device.3101711606.encrypted": "false",
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"block_device.3101711606.snapshot_id": "",
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"block_device.3101711606.virtual_name": "ephemeral0",
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"block_device.3101711606.volume_size": "",
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"block_device.3101711606.volume_type": "",
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"block_device.3101711606.iops": "",
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// Root
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"root_block_device.#": "1",
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"root_block_device.3018388612.delete_on_termination": "true",
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"root_block_device.3018388612.device_name": "/dev/sda1",
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"root_block_device.3018388612.snapshot_id": "",
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"root_block_device.3018388612.volume_size": "10",
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"root_block_device.3018388612.volume_type": "io1",
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"root_block_device.3018388612.iops": "1000",
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},
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Expected: map[string]string{
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"ebs_block_device.#": "1",
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"ebs_block_device.3851383343.delete_on_termination": "true",
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"ebs_block_device.3851383343.device_name": "/dev/sdx",
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"ebs_block_device.3851383343.encrypted": "false",
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"ebs_block_device.3851383343.snapshot_id": "",
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"ebs_block_device.3851383343.volume_size": "5",
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"ebs_block_device.3851383343.volume_type": "standard",
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"ephemeral_block_device.#": "1",
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"ephemeral_block_device.2458403513.device_name": "/dev/sdy",
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"ephemeral_block_device.2458403513.virtual_name": "ephemeral0",
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"root_block_device.#": "1",
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"root_block_device.3018388612.delete_on_termination": "true",
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"root_block_device.3018388612.device_name": "/dev/sda1",
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"root_block_device.3018388612.snapshot_id": "",
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"root_block_device.3018388612.volume_size": "10",
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"root_block_device.3018388612.volume_type": "io1",
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"root_block_device.3018388612.iops": "1000",
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},
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},
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}
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for tn, tc := range cases {
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is := &terraform.InstanceState{
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Attributes: tc.Attributes,
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}
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is, err := resourceAwsInstanceMigrateState(
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tc.StateVersion, is, tc.Meta)
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if err != nil {
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t.Fatalf("bad: %s, err: %#v", tn, err)
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}
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for k, v := range tc.Expected {
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if is.Attributes[k] != v {
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t.Fatalf(
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"bad: %s\n\n expected: %#v -> %#v\n got: %#v -> %#v\n in: %#v",
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tn, k, v, k, is.Attributes[k], is.Attributes)
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}
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}
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}
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}
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