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package shell
import (
"bytes"
"flag"
"fmt"
"io"
"strings"
"github.com/chrislusf/seaweedfs/weed/filer"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/storage/super_block"
)
func init() {
Commands = append(Commands, &commandFsConfigure{})
}
type commandFsConfigure struct {
}
func (c *commandFsConfigure) Name() string {
return "fs.configure"
}
func (c *commandFsConfigure) Help() string {
return `configure and apply storage options for each location
# see the current configuration file content
fs.configure
# trying the changes and see the possible configuration file content
fs.configure -locationPrfix=/my/folder -collection=abc
fs.configure -locationPrfix=/my/folder -collection=abc -ttl=7d
# example: configure adding only 1 physical volume for each bucket collection
fs.configure -locationPrfix=/buckets/ -volumeGrowthCount=1
# apply the changes
fs.configure -locationPrfix=/my/folder -collection=abc -apply
# delete the changes
fs.configure -locationPrfix=/my/folder -delete -apply
`
}
func (c *commandFsConfigure) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
fsConfigureCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
locationPrefix := fsConfigureCommand.String("locationPrefix", "", "path prefix, required to update the path-specific configuration")
collection := fsConfigureCommand.String("collection", "", "assign writes to this collection")
replication := fsConfigureCommand.String("replication", "", "assign writes with this replication")
ttl := fsConfigureCommand.String("ttl", "", "assign writes with this ttl")
diskType := fsConfigureCommand.String("diskType", "", "[hdd|ssd] choose between hard drive or solid state drive")
fsync := fsConfigureCommand.Bool("fsync", false, "fsync for the writes")
volumeGrowthCount := fsConfigureCommand.Int("volumeGrowthCount", 0, "the number of physical volumes to add if no writable volumes")
isDelete := fsConfigureCommand.Bool("delete", false, "delete the configuration by locationPrefix")
apply := fsConfigureCommand.Bool("apply", false, "update and apply filer configuration")
if err = fsConfigureCommand.Parse(args); err != nil {
return nil
}
var buf bytes.Buffer
if err = commandEnv.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error {
return filer.ReadEntry(commandEnv.MasterClient, client, filer.DirectoryEtcSeaweedFS, filer.FilerConfName, &buf)
}); err != nil && err != filer_pb.ErrNotFound {
return err
}
fc := filer.NewFilerConf()
if buf.Len() > 0 {
if err = fc.LoadFromBytes(buf.Bytes()); err != nil {
return err
}
}
if *locationPrefix != "" {
locConf := &filer_pb.FilerConf_PathConf{
LocationPrefix: *locationPrefix,
Collection: *collection,
Replication: *replication,
Ttl: *ttl,
Fsync: *fsync,
DiskType: *diskType,
VolumeGrowthCount: uint32(*volumeGrowthCount),
}
// check collection
if *collection != "" && strings.HasPrefix(*locationPrefix, "/buckets/") {
return fmt.Errorf("one s3 bucket goes to one collection and not customizable.")
}
// check replication
if *replication != "" {
rp, err := super_block.NewReplicaPlacementFromString(*replication)
if err != nil {
return fmt.Errorf("parse replication %s: %v", *replication, err)
}
if *volumeGrowthCount%rp.GetCopyCount() != 0 {
return fmt.Errorf("volumeGrowthCount %d should be devided by replication copy count %d", *volumeGrowthCount, rp.GetCopyCount())
}
}
// save it
if *isDelete {
fc.DeleteLocationConf(*locationPrefix)
} else {
fc.AddLocationConf(locConf)
}
}
buf.Reset()
fc.ToText(&buf)
fmt.Fprintf(writer, string(buf.Bytes()))
fmt.Fprintln(writer)
if *apply {
if err := filer.SaveAs(commandEnv.option.FilerHost, int(commandEnv.option.FilerPort), filer.DirectoryEtcSeaweedFS, filer.FilerConfName, "text/plain; charset=utf-8", &buf); err != nil {
return err
}
}
return nil
}
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