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Automatically detect the disk to resize (#34)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package tart | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "howett.net/plist" | ||
| ) | ||
|
|
||
| const expectedLastPartitionContent = "Apple_APFS" | ||
|
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| // ParseDiskUtilPlistOutput parses "diskutil list -plist" output, | ||
| // makes sure there's only one disk on the system and returns | ||
| // its name and the name of the last partition, additionally | ||
| // validating that the last partition is not a recovery one | ||
| // (which we should've deleted for the disk expansion to work). | ||
| func ParseDiskUtilPlistOutput(input []byte) (string, string, error) { | ||
| unmarshalledInput := map[string]interface{}{} | ||
|
|
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| _, err := plist.Unmarshal(input, &unmarshalledInput) | ||
| if err != nil { | ||
| return "", "", err | ||
| } | ||
|
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| allDisksAndPartitions, ok := unmarshalledInput["AllDisksAndPartitions"].([]interface{}) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("\"AllDisksAndPartitions\" value doesn't seem to be a dictionary") | ||
| } | ||
|
|
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| if len(allDisksAndPartitions) != 1 { | ||
| return "", "", fmt.Errorf("there are more than one physical disk present on the system") | ||
| } | ||
|
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| disk, ok := allDisksAndPartitions[0].(map[string]interface{}) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("first disk entry doesn't seem to be a dictionary") | ||
| } | ||
|
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| diskDeviceIdentifier, ok := disk["DeviceIdentifier"].(string) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("first disk's \"DeviceIdentifier\" doesn't seem to be a string") | ||
| } | ||
|
|
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| partitions, ok := disk["Partitions"].([]interface{}) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("first disk's \"Partitions\" doesn't seem to be a list") | ||
| } | ||
|
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| lastPartitionRaw := partitions[len(partitions)-1] | ||
| lastPartition, ok := lastPartitionRaw.(map[string]interface{}) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("last partition entry doesn't seem to be a map") | ||
| } | ||
|
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| lastPartitionContent, ok := lastPartition["Content"].(string) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("last partition's \"Content\" doesn't seem to be a string") | ||
| } | ||
| if lastPartitionContent != expectedLastPartitionContent { | ||
| return "", "", fmt.Errorf("last partition's \"Content\" should be %q, got %q", | ||
| expectedLastPartitionContent, lastPartitionContent) | ||
| } | ||
|
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| lastPartitionDeviceIdentifier, ok := lastPartition["DeviceIdentifier"].(string) | ||
| if !ok { | ||
| return "", "", fmt.Errorf("last partition's \"DeviceIdentifier\" doesn't seem to be a string") | ||
| } | ||
|
|
||
| return diskDeviceIdentifier, lastPartitionDeviceIdentifier, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package tart | ||
|
|
||
| import ( | ||
| "github.com/stretchr/testify/require" | ||
| "testing" | ||
| ) | ||
|
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||
| func TestKek(t *testing.T) { | ||
| plistBytes := `<?xml version="1.0" encoding="UTF-8"?> | ||
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | ||
| <plist version="1.0"> | ||
| <dict> | ||
| <key>AllDisks</key> | ||
| <array> | ||
| <string>disk0</string> | ||
| <string>disk0s1</string> | ||
| <string>disk0s2</string> | ||
| <string>disk0s3</string> | ||
| </array> | ||
| <key>AllDisksAndPartitions</key> | ||
| <array> | ||
| <dict> | ||
| <key>Content</key> | ||
| <string>GUID_partition_scheme</string> | ||
| <key>DeviceIdentifier</key> | ||
| <string>disk0</string> | ||
| <key>OSInternal</key> | ||
| <false/> | ||
| <key>Partitions</key> | ||
| <array> | ||
| <dict> | ||
| <key>Content</key> | ||
| <string>Apple_APFS_ISC</string> | ||
| <key>DeviceIdentifier</key> | ||
| <string>disk0s1</string> | ||
| <key>DiskUUID</key> | ||
| <string>024D2AE5-891F-4244-81EC-182B88D1AA0B</string> | ||
| <key>Size</key> | ||
| <integer>524288000</integer> | ||
| </dict> | ||
| <dict> | ||
| <key>Content</key> | ||
| <string>Apple_APFS</string> | ||
| <key>DeviceIdentifier</key> | ||
| <string>disk0s2</string> | ||
| <key>DiskUUID</key> | ||
| <string>430F1409-D91A-47F4-8418-0876B14AA807</string> | ||
| <key>Size</key> | ||
| <integer>494384795648</integer> | ||
| </dict> | ||
| </array> | ||
| <key>Size</key> | ||
| <integer>500277792768</integer> | ||
| </dict> | ||
| </array> | ||
| <key>VolumesFromDisks</key> | ||
| <array/> | ||
| <key>WholeDisks</key> | ||
| <array> | ||
| <string>disk0</string> | ||
| </array> | ||
| </dict> | ||
| </plist> | ||
| ` | ||
|
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| diskName, partitionName, err := ParseDiskUtilPlistOutput([]byte(plistBytes)) | ||
| require.NoError(t, err) | ||
| require.Equal(t, "disk0", diskName) | ||
| require.Equal(t, "disk0s2", partitionName) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| package tart | ||
|
|
||
| import ( | ||
| "github.com/hashicorp/packer-plugin-sdk/packer" | ||
| "io" | ||
| ) | ||
|
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| type QuietUi struct { | ||
| BaseUi packer.Ui | ||
| } | ||
|
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| func (ui QuietUi) Ask(s string) (string, error) { | ||
| return ui.BaseUi.Ask(s) | ||
| } | ||
|
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| func (ui QuietUi) Say(s string) { | ||
| // do nothing | ||
| } | ||
|
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| func (ui QuietUi) Message(s string) { | ||
| // do nothing | ||
| } | ||
|
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| func (ui QuietUi) Error(s string) { | ||
| ui.BaseUi.Error(s) | ||
| } | ||
|
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| func (ui QuietUi) Machine(s string, s2 ...string) { | ||
| ui.BaseUi.Machine(s, s2...) | ||
| } | ||
|
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| func (ui QuietUi) TrackProgress(src string, currentSize, totalSize int64, stream io.ReadCloser) (body io.ReadCloser) { | ||
| return ui.BaseUi.TrackProgress(src, currentSize, totalSize, stream) | ||
| } |
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