func (p provider) FetchConfig() (config.Config, error) {
p.logger.Debug("creating temporary mount point")
mnt, err := ioutil.TempDir("", "ignition-azure")
if err != nil {
return config.Config{}, fmt.Errorf("failed to create temp directory: %v", err)
}
defer os.Remove(mnt)
p.logger.Debug("mounting config device")
if err := p.logger.LogOp(
func() error { return syscall.Mount(configDevice, mnt, "udf", syscall.MS_RDONLY, "") },
"mounting %q at %q", configDevice, mnt,
); err != nil {
return config.Config{}, fmt.Errorf("failed to mount device %q at %q: %v", configDevice, mnt, err)
}
defer p.logger.LogOp(
func() error { return syscall.Unmount(mnt, 0) },
"unmounting %q at %q", configDevice, mnt,
)
p.logger.Debug("reading config")
rawConfig, err := ioutil.ReadFile(filepath.Join(mnt, configPath))
if err != nil && !os.IsNotExist(err) {
return config.Config{}, fmt.Errorf("failed to read config: %v", err)
}
return config.Parse(rawConfig)
}
func (p provider) FetchConfig() (config.Config, error) {
if p.rawConfig == nil {
return config.Config{}, nil
} else {
return config.Parse(p.rawConfig)
}
}
func (p provider) FetchConfig() (config.Config, error) {
cfg, err := config.Parse(p.rawConfig)
if err == nil || err == config.ErrEmpty {
err = p.fetchSSHKeys(&cfg)
}
return cfg, err
}
func (p provider) FetchConfig() (config.Config, error) {
data, err := rpcvmx.NewConfig().String("coreos.config.data", "")
if err != nil {
p.logger.Debug("failed to fetch config: %v", err)
return config.Config{}, err
}
p.logger.Debug("config successfully fetched")
return config.Parse([]byte(data))
}
// fetchReferencedConfig fetches, renders, and attempts to verify the requested
// config.
func (e Engine) fetchReferencedConfig(cfgRef types.ConfigReference) (types.Config, error) {
rawCfg, err := util.FetchResource(e.Logger, url.URL(cfgRef.Source))
if err != nil {
return types.Config{}, err
}
if err := util.AssertValid(cfgRef.Verification, rawCfg); err != nil {
return types.Config{}, err
}
cfg, err := config.Parse(rawCfg)
if err != nil {
return types.Config{}, err
}
return e.renderConfig(cfg)
}
func (p provider) FetchConfig() (types.Config, error) {
info := rpcvmx.NewConfig()
data, err := info.String("coreos.config.data", "")
if err != nil {
p.logger.Debug("failed to fetch config: %v", err)
return types.Config{}, err
}
encoding, err := info.String("coreos.config.data.encoding", "")
if err != nil {
p.logger.Debug("failed to fetch config encoding: %v", err)
return types.Config{}, err
}
decodedData, err := decodeData(data, encoding)
if err != nil {
p.logger.Debug("failed to decode config: %v", err)
return types.Config{}, err
}
p.logger.Debug("config successfully fetched")
return config.Parse(decodedData)
}
// fetchReferencedConfig fetches, renders, and attempts to verify the requested
// config.
func (e Engine) fetchReferencedConfig(cfgRef types.ConfigReference) (types.Config, error) {
var rawCfg []byte
switch cfgRef.Source.Scheme {
case "http":
rawCfg = util.NewHttpClient(e.Logger).
FetchConfig(cfgRef.Source.String(), http.StatusOK, http.StatusNoContent)
if rawCfg == nil {
return types.Config{}, ErrNetworkFailure
}
default:
return types.Config{}, ErrSchemeUnsupported
}
if err := util.AssertValid(cfgRef.Verification, rawCfg); err != nil {
return types.Config{}, err
}
cfg, err := config.Parse(rawCfg)
if err != nil {
return types.Config{}, err
}
return e.renderConfig(cfg)
}
// ignitionHandler returns a handler that responds with the Ignition config
// for the requester. The Ignition file referenced in the Profile is parsed
// as raw Ignition (for .ign/.ignition) or rendered to a Fuze config (YAML)
// and converted to Ignition. Ignition configs are served as HTTP JSON
// responses.
func (s *Server) ignitionHandler(core server.Server) ContextHandler {
fn := func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
group, err := groupFromContext(ctx)
if err != nil {
s.logger.WithFields(logrus.Fields{
"labels": labelsFromRequest(nil, req),
}).Infof("No matching group")
http.NotFound(w, req)
return
}
profile, err := core.ProfileGet(ctx, &pb.ProfileGetRequest{Id: group.Profile})
if err != nil {
s.logger.WithFields(logrus.Fields{
"labels": labelsFromRequest(nil, req),
"group": group.Id,
"group_name": group.Name,
}).Infof("No profile named: %s", group.Profile)
http.NotFound(w, req)
return
}
contents, err := core.IgnitionGet(ctx, profile.IgnitionId)
if err != nil {
s.logger.WithFields(logrus.Fields{
"labels": labelsFromRequest(nil, req),
"group": group.Id,
"group_name": group.Name,
"profile": group.Profile,
}).Infof("No Ignition or Fuze template named: %s", profile.IgnitionId)
http.NotFound(w, req)
return
}
// match was successful
s.logger.WithFields(logrus.Fields{
"labels": labelsFromRequest(nil, req),
"group": group.Id,
"profile": profile.Id,
}).Debug("Matched an Ignition or Fuze template")
// Skip rendering if raw Ignition JSON is provided
if isIgnition(profile.IgnitionId) {
_, err := ignition.Parse([]byte(contents))
if err != nil {
s.logger.Warningf("warning parsing Ignition JSON: %v", err)
}
s.writeJSON(w, []byte(contents))
return
}
// Fuze Config template
// collect data for rendering
data := make(map[string]interface{})
if group.Metadata != nil {
err = json.Unmarshal(group.Metadata, &data)
if err != nil {
s.logger.Errorf("error unmarshalling metadata: %v", err)
http.NotFound(w, req)
return
}
}
data["query"] = req.URL.RawQuery
for key, value := range group.Selector {
data[strings.ToLower(key)] = value
}
// render the template for an Ignition config with data
var buf bytes.Buffer
err = s.renderTemplate(&buf, data, contents)
if err != nil {
http.NotFound(w, req)
return
}
// Parse fuze config into an Ignition config
config, err := fuze.ParseAsV2_0_0(buf.Bytes())
if err == nil {
s.renderJSON(w, config)
return
}
s.logger.Errorf("error parsing Ignition config: %v", err)
http.NotFound(w, req)
return
}
return ContextHandlerFunc(fn)
}
func (p provider) FetchConfig() (config.Config, error) {
return config.Parse(p.rawConfig)
}
