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66 lines
2.0 KiB
66 lines
2.0 KiB
package shell
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import (
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"flag"
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"fmt"
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"io"
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)
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func init() {
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Commands = append(Commands, &commandEcBalance{})
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}
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type commandEcBalance struct {
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}
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func (c *commandEcBalance) Name() string {
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return "ec.balance"
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}
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func (c *commandEcBalance) Help() string {
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return `balance all ec shards among all racks and volume servers
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ec.balance [-c EACH_COLLECTION|<collection_name>] [-force] [-dataCenter <data_center>] [-shardReplicaPlacement <replica_placement>]
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Algorithm:
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` + ecBalanceAlgorithmDescription
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}
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func (c *commandEcBalance) HasTag(CommandTag) bool {
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return false
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}
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func (c *commandEcBalance) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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balanceCommand := flag.NewFlagSet(c.Name(), flag.ContinueOnError)
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collection := balanceCommand.String("collection", "EACH_COLLECTION", "collection name, or \"EACH_COLLECTION\" for each collection")
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dc := balanceCommand.String("dataCenter", "", "only apply the balancing for this dataCenter")
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shardReplicaPlacement := balanceCommand.String("shardReplicaPlacement", "", "replica placement for EC shards, or master default if empty")
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maxParallelization := balanceCommand.Int("maxParallelization", DefaultMaxParallelization, "run up to X tasks in parallel, whenever possible")
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applyBalancing := balanceCommand.Bool("force", false, "apply the balancing plan")
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if err = balanceCommand.Parse(args); err != nil {
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return nil
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}
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infoAboutSimulationMode(writer, *applyBalancing, "-force")
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if err = commandEnv.confirmIsLocked(args); err != nil {
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return
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}
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var collections []string
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if *collection == "EACH_COLLECTION" {
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collections, err = ListCollectionNames(commandEnv, false, true)
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if err != nil {
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return err
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}
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} else {
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collections = append(collections, *collection)
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}
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fmt.Printf("balanceEcVolumes collections %+v\n", len(collections))
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rp, err := parseReplicaPlacementArg(commandEnv, *shardReplicaPlacement)
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if err != nil {
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return err
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}
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return EcBalance(commandEnv, collections, *dc, rp, *maxParallelization, *applyBalancing)
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}
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