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// -*- Mode: Go; indent-tabs-mode: t -*-
//go:build !nomanagers
// +build !nomanagers
/*
* Copyright (C) 2018 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package configcore
import (
"encoding/json"
"errors"
"io/ioutil"
"os"
"gitee.com/mysnapcore/mysnapd/dirs"
"gitee.com/mysnapcore/mysnapd/logger"
"gitee.com/mysnapcore/mysnapd/overlord/auth"
"gitee.com/mysnapcore/mysnapd/overlord/configstate/config"
"gitee.com/mysnapcore/mysnapd/overlord/state"
)
func alreadySeeded(tr config.Conf) (bool, error) {
st := tr.State()
st.Lock()
defer st.Unlock()
var seeded bool
err := tr.State().Get("seeded", &seeded)
if err != nil && !errors.Is(err, state.ErrNoState) {
return false, err
}
return seeded, nil
}
type cloudInitInstanceData struct {
V1 struct {
Region string
Name string
AvailabilityZone string
}
}
func (c *cloudInitInstanceData) UnmarshalJSON(bs []byte) error {
var instanceDataJSON struct {
V1 struct {
Region string `json:"region"`
// these fields can come with - or _ as separators
Name string `json:"cloud_name"`
AltName string `json:"cloud-name"`
AvailabilityZone string `json:"availability_zone"`
AltAvailabilityZone string `json:"availability-zone"`
} `json:"v1"`
}
if err := json.Unmarshal(bs, &instanceDataJSON); err != nil {
return err
}
c.V1.Region = instanceDataJSON.V1.Region
switch {
case instanceDataJSON.V1.Name != "":
c.V1.Name = instanceDataJSON.V1.Name
c.V1.AvailabilityZone = instanceDataJSON.V1.AvailabilityZone
case instanceDataJSON.V1.AltName != "":
c.V1.Name = instanceDataJSON.V1.AltName
c.V1.AvailabilityZone = instanceDataJSON.V1.AltAvailabilityZone
}
return nil
}
func setCloudInfoWhenSeeding(tr config.Conf, opts *fsOnlyContext) error {
// if we are during seeding try to capture cloud information
seeded, err := alreadySeeded(tr)
if err != nil {
return err
}
if seeded {
// already done
return nil
}
data, err := ioutil.ReadFile(dirs.CloudInstanceDataFile)
if os.IsNotExist(err) {
// nothing to do
return nil
}
if err != nil {
logger.Noticef("cannot read cloud instance information %q: %v", dirs.CloudInstanceDataFile, err)
return nil
}
var instanceData cloudInitInstanceData
err = json.Unmarshal(data, &instanceData)
if err != nil {
logger.Noticef("cannot unmarshal cloud instance information %q: %v", dirs.CloudInstanceDataFile, err)
return nil
}
cloudName := instanceData.V1.Name
if cloudName == "" || cloudName == "nocloud" || cloudName == "none" {
// not a cloud
return nil
}
tr.Set("core", "cloud", auth.CloudInfo{
Name: cloudName,
Region: instanceData.V1.Region,
AvailabilityZone: instanceData.V1.AvailabilityZone,
})
return nil
}
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