mirror of
https://github.com/rancher/os.git
synced 2025-07-01 17:21:50 +00:00
110 lines
2.7 KiB
Go
110 lines
2.7 KiB
Go
// Copyright 2015 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.
|
|
|
|
package vmware
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
|
|
"github.com/rancher/os/log"
|
|
"github.com/rancher/os/util"
|
|
|
|
"github.com/rancher/os/config/cloudinit/pkg"
|
|
|
|
"github.com/sigma/vmw-guestinfo/rpcvmx"
|
|
"github.com/sigma/vmw-guestinfo/vmcheck"
|
|
ovf "github.com/sigma/vmw-ovflib"
|
|
)
|
|
|
|
type ovfWrapper struct {
|
|
env *ovf.OvfEnvironment
|
|
}
|
|
|
|
func (ovf ovfWrapper) readConfig(key string) (string, error) {
|
|
return ovf.env.Properties["guestinfo."+key], nil
|
|
}
|
|
|
|
func NewDatasource(fileName string) *VMWare {
|
|
if util.GetHypervisor() != "vmware" {
|
|
return nil
|
|
}
|
|
// read from provided ovf environment document (typically /media/ovfenv/ovf-env.xml)
|
|
if fileName != "" {
|
|
log.Printf("Using OVF environment from %s\n", fileName)
|
|
ovfEnv, err := ioutil.ReadFile(fileName)
|
|
if err != nil {
|
|
ovfEnv = make([]byte, 0)
|
|
}
|
|
return &VMWare{
|
|
ovfFileName: fileName,
|
|
readConfig: getOvfReadConfig(ovfEnv),
|
|
urlDownload: urlDownload,
|
|
}
|
|
}
|
|
|
|
// try to read ovf environment from VMware tools
|
|
data, err := readConfig("ovfenv")
|
|
if err == nil && data != "" {
|
|
log.Printf("Using OVF environment from guestinfo\n")
|
|
return &VMWare{
|
|
readConfig: getOvfReadConfig([]byte(data)),
|
|
urlDownload: urlDownload,
|
|
}
|
|
}
|
|
|
|
// if everything fails, fallback to directly reading variables from the backdoor
|
|
log.Printf("Using guestinfo variables\n")
|
|
return &VMWare{
|
|
readConfig: readConfig,
|
|
urlDownload: urlDownload,
|
|
}
|
|
}
|
|
|
|
func (v VMWare) IsAvailable() bool {
|
|
if util.GetHypervisor() != "vmware" {
|
|
return false
|
|
}
|
|
if v.ovfFileName != "" {
|
|
_, v.lastError = os.Stat(v.ovfFileName)
|
|
return !os.IsNotExist(v.lastError)
|
|
}
|
|
return vmcheck.IsVirtualWorld()
|
|
}
|
|
|
|
func readConfig(key string) (string, error) {
|
|
data, err := rpcvmx.NewConfig().String(key, "")
|
|
if err == nil {
|
|
log.Printf("Read from %q: %q\n", key, data)
|
|
} else {
|
|
log.Printf("Failed to read from %q: %v\n", key, err)
|
|
}
|
|
return data, err
|
|
}
|
|
|
|
func getOvfReadConfig(ovfEnv []byte) readConfigFunction {
|
|
env := &ovf.OvfEnvironment{}
|
|
if len(ovfEnv) != 0 {
|
|
env = ovf.ReadEnvironment(ovfEnv)
|
|
}
|
|
|
|
wrapper := ovfWrapper{env}
|
|
return wrapper.readConfig
|
|
}
|
|
|
|
func urlDownload(url string) ([]byte, error) {
|
|
client := pkg.NewHTTPClient()
|
|
return client.GetRetry(url)
|
|
}
|