// ParseAddress parses a standard golang network address and returns the
// protocol and path.
func ParseAddress(addr string) (proto string, path string, err error) {
m := netAddrRx.FindStringSubmatch(addr)
if m == nil {
return "", "", errors.WithField("address", addr, "invalid address")
}
return m[1], m[2], nil
}
func (c *Config) marshalJSON(s JsonMarshalStrategy) ([]byte, error) {
switch s {
case JsonMarshalSecure:
return json.MarshalIndent(c.secureConfig, "", " ")
case JsonMarshalPlainText:
return json.MarshalIndent(c.plainTextConfig, "", " ")
}
return nil, errors.WithField(
"strategy", s, "unknown json marshalling strategy")
}
func GetModuleInstance(modInstId int32) (*ModuleInstance, error) {
modInstancesRwl.RLock()
defer modInstancesRwl.RUnlock()
mod, modExists := modInstances[modInstId]
if !modExists {
return nil,
errors.WithField("id", modInstId, "unknown module instance")
}
return mod, nil
}
func ReadFileToString(path string) (string, error) {
f, err := os.Open(path)
if err != nil {
return "", err
}
defer f.Close()
scanner := bufio.NewScanner(f)
if !scanner.Scan() {
return "", errors.WithField("path", path, "error reading file")
}
return scanner.Text(), nil
}
// Create will create a remote volume
func (driver *Driver) Create(volumeName string, volumeOpts volume.VolumeOpts) error {
log.WithFields(log.Fields{
"volumeName": volumeName,
"volumeOpts": volumeOpts,
"driverName": driver.Name()}).Info("creating volume")
if volumeName == "" {
return errors.New("Missing volume name")
}
instances, err := driver.sdm.GetInstance()
if err != nil {
return err
}
switch {
case len(instances) == 0:
return errors.New("No instances")
case len(instances) > 1:
return errors.New("Too many instances returned, limit the storagedrivers")
}
volumes, err := driver.sdm.GetVolume("", volumeName)
if err != nil {
return err
}
for k, v := range volumeOpts {
volumeOpts[strings.ToLower(k)] = v
}
newFsType := volumeOpts["newfstype"]
overwriteFs, _ := strconv.ParseBool(volumeOpts["overwritefs"])
switch {
case len(volumes) == 1 && !overwriteFs:
return nil
case len(volumes) > 1:
return errors.WithField("volumeName", volumeName, "Too many volumes returned")
}
var (
ok bool
volumeType string
IOPSi int
sizei int
availabilityZone string
optVolumeID string
optSnapshotID string
)
if volumeType, ok = volumeOpts["volumetype"]; !ok {
volumeType = os.Getenv("REXRAY_DOCKER_VOLUMETYPE")
}
if IOPSs, ok := volumeOpts["iops"]; ok {
IOPSi, _ = strconv.Atoi(IOPSs)
} else {
IOPSi, _ = strconv.Atoi(os.Getenv("REXRAY_DOCKER_IOPS"))
}
IOPS := int64(IOPSi)
if sizes, ok := volumeOpts["size"]; ok {
sizei, _ = strconv.Atoi(sizes)
} else {
sizei, _ = strconv.Atoi(os.Getenv("REXRAY_DOCKER_SIZE"))
}
size := int64(sizei)
if size == 0 {
size = DefaultVolumeSize
}
if availabilityZone, ok = volumeOpts["availabilityzone"]; !ok {
availabilityZone = os.Getenv("REXRAY_DOCKER_AVAILABILITYZONE")
}
if optSnapshotName, ok := volumeOpts["snapshotname"]; !ok {
optSnapshotID = volumeOpts["snapshotid"]
} else {
snapshots, err := driver.sdm.GetSnapshot("", "", optSnapshotName)
if err != nil {
return err
}
switch {
case len(snapshots) == 0:
return errors.WithField("optSnapshotName", optSnapshotName, "No snapshots returned")
case len(snapshots) > 1:
return errors.WithField("optSnapshotName", optSnapshotName, "Too many snapshots returned")
}
optSnapshotID = snapshots[0].SnapshotID
}
if optVolumeName, ok := volumeOpts["volumename"]; !ok {
optVolumeID = volumeOpts["volumeid"]
} else {
volumes, err := driver.sdm.GetVolume("", optVolumeName)
if err != nil {
return err
}
switch {
case len(volumes) == 0:
return errors.WithField("optVolumeName", optVolumeName, "No volumes returned")
case len(volumes) > 1:
return errors.WithField("optVolumeName", optVolumeName, "Too many volumes returned")
}
optVolumeID = volumes[0].VolumeID
}
if len(volumes) == 0 {
_, err := driver.sdm.CreateVolume(
false, volumeName, optVolumeID, optSnapshotID, volumeType, IOPS, size, availabilityZone)
if err != nil {
return err
}
}
if newFsType != "" || overwriteFs {
_, err = driver.Mount(volumeName, "", overwriteFs, newFsType)
if err != nil {
log.WithFields(log.Fields{
"volumeName": volumeName,
"overwriteFs": overwriteFs,
"newFsType": newFsType,
"driverName": driver.Name()}).Error("Failed to create or mount file system")
}
err = driver.Unmount(volumeName, "")
if err != nil {
return err
}
}
return nil
}