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package main
import (
"context"
"flag"
"fmt"
"io"
"strings"
"gitlab.com/gitlab-org/gitaly/v15/internal/praefect/config"
"gitlab.com/gitlab-org/gitaly/v15/proto/go/gitalypb"
)
const (
setReplicationFactorCmdName = "set-replication-factor"
paramReplicationFactor = "replication-factor"
)
type setReplicationFactorSubcommand struct {
stdout io.Writer
virtualStorage string
relativePath string
replicationFactor int
}
func newSetReplicatioFactorSubcommand(stdout io.Writer) *setReplicationFactorSubcommand {
return &setReplicationFactorSubcommand{stdout: stdout}
}
func (cmd *setReplicationFactorSubcommand) FlagSet() *flag.FlagSet {
fs := flag.NewFlagSet(setReplicationFactorCmdName, flag.ContinueOnError)
fs.StringVar(&cmd.virtualStorage, paramVirtualStorage, "", "name of the repository's virtual storage")
fs.StringVar(&cmd.relativePath, paramRelativePath, "", "repository to set the replication factor for")
fs.IntVar(&cmd.replicationFactor, paramReplicationFactor, -1, "desired replication factor")
return fs
}
func (cmd *setReplicationFactorSubcommand) Exec(flags *flag.FlagSet, cfg config.Config) error {
if flags.NArg() > 0 {
return unexpectedPositionalArgsError{Command: flags.Name()}
} else if cmd.virtualStorage == "" {
return requiredParameterError(paramVirtualStorage)
} else if cmd.relativePath == "" {
return requiredParameterError(paramRelativePath)
} else if cmd.replicationFactor < 0 {
return requiredParameterError(paramReplicationFactor)
}
nodeAddr, err := getNodeAddress(cfg)
if err != nil {
return err
}
conn, err := subCmdDial(context.TODO(), nodeAddr, cfg.Auth.Token, defaultDialTimeout)
if err != nil {
return fmt.Errorf("error dialing: %w", err)
}
defer conn.Close()
client := gitalypb.NewPraefectInfoServiceClient(conn)
resp, err := client.SetReplicationFactor(context.TODO(), &gitalypb.SetReplicationFactorRequest{
VirtualStorage: cmd.virtualStorage,
RelativePath: cmd.relativePath,
ReplicationFactor: int32(cmd.replicationFactor),
})
if err != nil {
return err
}
fmt.Fprintf(cmd.stdout, "current assignments: %v\n", strings.Join(resp.Storages, ", "))
return nil
}
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