forked from docker/machine
/
migrate.go
65 lines (53 loc) · 1.49 KB
/
migrate.go
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package libmachine
import (
"encoding/json"
"fmt"
"github.com/docker/machine/drivers"
"github.com/docker/machine/version"
)
func getMigratedHostMetadata(data []byte) (*HostMetadata, error) {
// HostMetadata is for a "first pass" so we can then load the driver
var (
hostMetadata *HostMetadataV0
)
if err := json.Unmarshal(data, &hostMetadata); err != nil {
return &HostMetadata{}, err
}
migratedHostMetadata := MigrateHostMetadataV0ToHostMetadataV1(hostMetadata)
return migratedHostMetadata, nil
}
func MigrateHost(h *Host, data []byte) (*Host, error) {
migratedHostMetadata, err := getMigratedHostMetadata(data)
if err != nil {
return &Host{}, err
}
authOptions := migratedHostMetadata.HostOptions.AuthOptions
driver, err := drivers.NewDriver(
migratedHostMetadata.DriverName,
h.Name,
h.StorePath,
authOptions.CaCertPath,
authOptions.PrivateKeyPath,
)
if err != nil {
return &Host{}, err
}
for h.ConfigVersion = migratedHostMetadata.ConfigVersion; h.ConfigVersion < version.ConfigVersion; h.ConfigVersion++ {
switch h.ConfigVersion {
case 0:
hostV0 := &HostV0{
Driver: driver,
}
if err := json.Unmarshal(data, &hostV0); err != nil {
return &Host{}, fmt.Errorf("Error unmarshalling host config version 0: %s", err)
}
h = MigrateHostV0ToHostV1(hostV0)
default:
}
}
h.Driver = driver
if err := json.Unmarshal(data, &h); err != nil {
return &Host{}, fmt.Errorf("Error unmarshalling most recent host version: %s", err)
}
return h, nil
}