func instanceID() (*types.InstanceID, error) {
hostName, err := utils.HostName()
if err != nil {
return nil, err
}
iid := &types.InstanceID{ID: hostName, Driver: vfs.Name}
if ok, _ := strconv.ParseBool(os.Getenv("VFS_INSTANCEID_USE_FIELDS")); ok {
iid.Fields = map[string]string{"region": "east"}
}
return iid, nil
}
// InstanceID returns the local system's InstanceID.
func (d *driver) InstanceID(
ctx types.Context,
opts types.Store) (*types.InstanceID, error) {
iid := &types.InstanceID{Driver: vfs.Name}
hostName, err := utils.HostName()
if err != nil {
return nil, err
}
if ok, _ := strconv.ParseBool(os.Getenv("VFS_INSTANCEID_USE_FIELDS")); ok {
iid.ID = hostName
iid.Fields = map[string]string{"region": "east"}
return iid, nil
}
if err := iid.MarshalMetadata(hostName); err != nil {
return nil, err
}
return iid, nil
}
func newTestConfigAll(
t *testing.T) (
[]byte,
[]byte,
map[string]*types.Volume,
map[string]*types.Snapshot) {
hostName, err := utils.HostName()
assert.NoError(t, err)
if err != nil {
t.FailNow()
}
d, err := ioutil.TempDir("", "")
assert.NoError(t, err)
if err != nil {
t.FailNow()
}
t.Logf("created temp vfs root dir: %s", d)
func() {
testDirsLock.Lock()
defer testDirsLock.Unlock()
testDirs = append(testDirs, d)
}()
vd := path.Join(d, "vol")
if err := os.MkdirAll(vd, 0755); err != nil {
assert.NoError(t, err)
t.FailNow()
}
t.Logf("created temp vfs vol dir: %s", vd)
sd := path.Join(d, "snap")
if err := os.MkdirAll(sd, 0755); err != nil {
assert.NoError(t, err)
t.FailNow()
}
t.Logf("created temp vfs snap dir: %s", sd)
dp := path.Join(d, "dev")
devFileContents := []byte(fmt.Sprintf(devFile, d))
err = ioutil.WriteFile(dp, devFileContents, 0644)
assert.NoError(t, err)
if err != nil {
t.FailNow()
}
t.Logf("created temp vfs dev file: %s", dp)
vols := map[string]*types.Volume{}
snaps := map[string]*types.Snapshot{}
for x := 0; x < 3; x++ {
var vj []byte
if x < 2 {
vj = []byte(fmt.Sprintf(volJSON, x, hostName))
} else {
vj = []byte(fmt.Sprintf(volNoAttachJSON, x, hostName))
}
v := &types.Volume{}
if err := json.Unmarshal(vj, v); err != nil {
assert.NoError(t, err)
t.FailNow()
}
vols[v.ID] = v
vjp := path.Join(vd, fmt.Sprintf("%s.json", v.ID))
os.MkdirAll(path.Join(vd, v.ID), 0755)
if err := ioutil.WriteFile(vjp, vj, 0644); err != nil {
assert.NoError(t, err)
t.FailNow()
}
for y := 0; y < 3; y++ {
sj := []byte(fmt.Sprintf(snapJSON, x, y, time.Now().Unix()))
s := &types.Snapshot{}
if err := json.Unmarshal(sj, s); err != nil {
assert.NoError(t, err)
t.FailNow()
}
snaps[s.ID] = s
sjp := path.Join(sd, fmt.Sprintf("vfs-%03d-%03d.json", x, y))
if err := ioutil.WriteFile(sjp, sj, 0644); err != nil {
assert.NoError(t, err)
t.FailNow()
}
}
}
return []byte(fmt.Sprintf(configYAML, d)), devFileContents, vols, snaps
}