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virtualbox.go
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virtualbox.go
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// Copyright 2017 CoreOS, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// The virtualbox provider fetches the configuration from raw data on a partition
// with the GUID 99570a8a-f826-4eb0-ba4e-9dd72d55ea13
package virtualbox
import (
"bytes"
"io/ioutil"
"os"
"path/filepath"
"github.com/coreos/ignition/config/shared/errors"
"github.com/coreos/ignition/config/validate/report"
"github.com/coreos/ignition/internal/config/types"
"github.com/coreos/ignition/internal/distro"
"github.com/coreos/ignition/internal/providers/util"
"github.com/coreos/ignition/internal/resource"
)
const (
partUUID = "99570a8a-f826-4eb0-ba4e-9dd72d55ea13"
)
func FetchConfig(f *resource.Fetcher) (types.Config, report.Report, error) {
f.Logger.Debug("Attempting to read config drive")
rawConfig, err := ioutil.ReadFile(filepath.Join(distro.DiskByPartUUIDDir(), partUUID))
if os.IsNotExist(err) {
f.Logger.Info("Path to ignition config does not exist, assuming no config")
return types.Config{}, report.Report{}, errors.ErrEmpty
} else if err != nil {
f.Logger.Err("Error reading ignition config: %v", err)
return types.Config{}, report.Report{}, err
}
trimmedConfig := bytes.TrimRight(rawConfig, "\x00")
return util.ParseConfig(f.Logger, trimmedConfig)
}