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63 lines
1.5 KiB
63 lines
1.5 KiB
package command
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import (
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"context"
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"fmt"
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"io"
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"github.com/chrislusf/seaweedfs/weed/pb"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/security"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func init() {
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cmdWatch.Run = runWatch // break init cycle
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}
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var cmdWatch = &Command{
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UsageLine: "watch <wip> [-filer=localhost:8888] [-target=/]",
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Short: "see recent changes on a filer",
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Long: `See recent changes on a filer.
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`,
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}
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var (
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watchFiler = cmdWatch.Flag.String("filer", "localhost:8888", "filer hostname:port")
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watchTarget = cmdWatch.Flag.String("pathPrefix", "/", "path to a folder or file, or common prefix for the folders or files on filer")
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)
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func runWatch(cmd *Command, args []string) bool {
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grpcDialOption := security.LoadClientTLS(util.GetViper(), "grpc.client")
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watchErr := pb.WithFilerClient(*watchFiler, grpcDialOption, func(client filer_pb.SeaweedFilerClient) error {
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stream, err := client.SubscribeMetadata(context.Background(), &filer_pb.SubscribeMetadataRequest{
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ClientName: "watch",
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PathPrefix: *watchTarget,
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SinceNs: 0,
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})
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if err != nil {
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return fmt.Errorf("listen: %v", err)
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}
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for {
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resp, listenErr := stream.Recv()
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if listenErr == io.EOF {
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return nil
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}
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if listenErr != nil {
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return listenErr
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}
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fmt.Printf("events: %+v\n", resp.EventNotification)
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}
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})
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if watchErr != nil {
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fmt.Printf("watch %s: %v\n", *watchFiler, watchErr)
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}
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return true
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}
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