Add support for filtering by {min,max} x {create,mod} x {revision} to…

… etcdctl.

Signed-off-by: Cristian Ferretti <[email protected]>

etcdctl/README.md

@@ -125,6 +125,14 @@ RPC: Range
 
 - keys-only -- Get only the keys
 
+- max-create-revision -- restrict results to kvs with create revision lower or equal than the supplied revision
+
+- min-create-revision -- restrict results to kvs with create revision greater or equal than the supplied revision
+
+- max-mod-revision -- restrict results to kvs with modified revision lower or equal than the supplied revision
+
+- min-mod-revision -- restrict results to kvs with modified revision greater or equal than the supplied revision
+
 #### Output
 Prints the data in format below,
 ```

etcdctl/ctlv3/command/get_command.go

@@ -25,16 +25,20 @@ import (
 )
 
 var (
-	getConsistency string
-	getLimit       int64
-	getSortOrder   string
-	getSortTarget  string
-	getPrefix      bool
-	getFromKey     bool
-	getRev         int64
-	getKeysOnly    bool
-	getCountOnly   bool
-	printValueOnly bool
+	getConsistency       string
+	getLimit             int64
+	getSortOrder         string
+	getSortTarget        string
+	getPrefix            bool
+	getFromKey           bool
+	getRev               int64
+	getKeysOnly          bool
+	getCountOnly         bool
+	printValueOnly       bool
+	getMinCreateRevision int64
+	getMaxCreateRevision int64
+	getMinModRevision    int64
+	getMaxModRevision    int64
 )
 
 // NewGetCommand returns the cobra command for "get".
@@ -55,6 +59,10 @@ func NewGetCommand() *cobra.Command {
 	cmd.Flags().BoolVar(&getKeysOnly, "keys-only", false, "Get only the keys")
 	cmd.Flags().BoolVar(&getCountOnly, "count-only", false, "Get only the count")
 	cmd.Flags().BoolVar(&printValueOnly, "print-value-only", false, `Only write values when using the "simple" output format`)
+	cmd.Flags().Int64Var(&getMinCreateRevision, "min-create-revision", 0, "Minimum create revision")
+	cmd.Flags().Int64Var(&getMaxCreateRevision, "max-create-revision", 0, "Maximum create revision")
+	cmd.Flags().Int64Var(&getMinModRevision, "min-mod-revision", 0, "Minimum modification revision")
+	cmd.Flags().Int64Var(&getMaxModRevision, "max-mod-revision", 0, "Maximum modification revision")
 
 	cmd.RegisterFlagCompletionFunc("consistency", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
 		return []string{"l", "s"}, cobra.ShellCompDirectiveDefault
@@ -184,5 +192,21 @@ func getGetOp(args []string) (string, []clientv3.OpOption) {
 		opts = append(opts, clientv3.WithCountOnly())
 	}
 
+	if getMinCreateRevision > 0 {
+		opts = append(opts, clientv3.WithMinCreateRev(getMinCreateRevision))
+	}
+
+	if getMaxCreateRevision > 0 {
+		opts = append(opts, clientv3.WithMaxCreateRev(getMaxCreateRevision))
+	}
+
+	if getMinModRevision > 0 {
+		opts = append(opts, clientv3.WithMinModRev(getMinModRevision))
+	}
+
+	if getMaxModRevision > 0 {
+		opts = append(opts, clientv3.WithMaxModRev(getMaxModRevision))
+	}
+
 	return key, opts
 }