seaweedfs/weed/command/compact.go

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package command
import (
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/storage"
)
func init() {
cmdCompact.Run = runCompact // break init cycle
}
var cmdCompact = &Command{
UsageLine: "compact -dir=/tmp -volumeId=234",
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Short: "run weed tool compact on volume file",
Long: `Force an compaction to remove deleted files from volume files.
The compacted .dat file is stored as .cpd file.
The compacted .idx file is stored as .cpx file.
`,
}
var (
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compactVolumePath = cmdCompact.Flag.String("dir", ".", "data directory to store files")
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compactVolumeCollection = cmdCompact.Flag.String("collection", "", "volume collection name")
compactVolumeId = cmdCompact.Flag.Int("volumeId", -1, "a volume id. The volume should already exist in the dir.")
compactMethod = cmdCompact.Flag.Int("method", 0, "option to choose which compact method. use 0 or 1.")
)
func runCompact(cmd *Command, args []string) bool {
if *compactVolumeId == -1 {
return false
}
vid := storage.VolumeId(*compactVolumeId)
v, err := storage.NewVolume(*compactVolumePath, *compactVolumeCollection, vid,
storage.NeedleMapInMemory, nil, nil)
if err != nil {
glog.Fatalf("Load Volume [ERROR] %s\n", err)
}
if *compactMethod == 0 {
if err = v.Compact(); err != nil {
glog.Fatalf("Compact Volume [ERROR] %s\n", err)
}
} else {
if err = v.Compact2(); err != nil {
glog.Fatalf("Compact Volume [ERROR] %s\n", err)
}
}
return true
}