Add XAutoClaim command (#1780)

Author: ericmillin

command.go

@@ -1501,6 +1501,122 @@ func (cmd *XPendingExtCmd) readReply(rd *proto.Reader) error {
 
 //------------------------------------------------------------------------------
 
+type XAutoClaimCmd struct {
+	baseCmd
+
+	start string
+	val   []XMessage
+}
+
+var _ Cmder = (*XAutoClaimCmd)(nil)
+
+func NewXAutoClaimCmd(ctx context.Context, args ...interface{}) *XAutoClaimCmd {
+	return &XAutoClaimCmd{
+		baseCmd: baseCmd{
+			ctx:  ctx,
+			args: args,
+		},
+	}
+}
+
+func (cmd *XAutoClaimCmd) Val() (messages []XMessage, start string) {
+	return cmd.val, cmd.start
+}
+
+func (cmd *XAutoClaimCmd) Result() (messages []XMessage, start string, err error) {
+	return cmd.val, cmd.start, cmd.err
+}
+
+func (cmd *XAutoClaimCmd) String() string {
+	return cmdString(cmd, cmd.val)
+}
+
+func (cmd *XAutoClaimCmd) readReply(rd *proto.Reader) error {
+	_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		if n != 2 {
+			return nil, fmt.Errorf("got %d, wanted 2", n)
+		}
+		var err error
+
+		cmd.start, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
+
+		cmd.val, err = readXMessageSlice(rd)
+		if err != nil {
+			return nil, err
+		}
+
+		return nil, nil
+	})
+	return err
+}
+
+//------------------------------------------------------------------------------
+
+type XAutoClaimJustIDCmd struct {
+	baseCmd
+
+	start string
+	val   []string
+}
+
+var _ Cmder = (*XAutoClaimJustIDCmd)(nil)
+
+func NewXAutoClaimJustIDCmd(ctx context.Context, args ...interface{}) *XAutoClaimJustIDCmd {
+	return &XAutoClaimJustIDCmd{
+		baseCmd: baseCmd{
+			ctx:  ctx,
+			args: args,
+		},
+	}
+}
+
+func (cmd *XAutoClaimJustIDCmd) Val() (ids []string, start string) {
+	return cmd.val, cmd.start
+}
+
+func (cmd *XAutoClaimJustIDCmd) Result() (ids []string, start string, err error) {
+	return cmd.val, cmd.start, cmd.err
+}
+
+func (cmd *XAutoClaimJustIDCmd) String() string {
+	return cmdString(cmd, cmd.val)
+}
+
+func (cmd *XAutoClaimJustIDCmd) readReply(rd *proto.Reader) error {
+	_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		if n != 2 {
+			return nil, fmt.Errorf("got %d, wanted 2", n)
+		}
+		var err error
+
+		cmd.start, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
+
+		nn, err := rd.ReadArrayLen()
+		if err != nil {
+			return nil, err
+		}
+
+		cmd.val = make([]string, nn)
+		for i := 0; i < nn; i++ {
+			cmd.val[i], err = rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
+		}
+
+		return nil, nil
+	})
+	return err
+}
+
+//------------------------------------------------------------------------------
+
 type XInfoConsumersCmd struct {
 	baseCmd
 	val []XInfoConsumer

commands.go

@@ -1845,6 +1845,39 @@ func (c cmdable) XPendingExt(ctx context.Context, a *XPendingExtArgs) *XPendingE
 	return cmd
 }
 
+type XAutoClaimArgs struct {
+	Stream   string
+	Group    string
+	MinIdle  time.Duration
+	Start    string
+	Count    int64
+	Consumer string
+}
+
+func (c cmdable) XAutoClaim(ctx context.Context, a *XAutoClaimArgs) *XAutoClaimCmd {
+	args := xAutoClaimArgs(ctx, a)
+	cmd := NewXAutoClaimCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func (c cmdable) XAutoClaimJustID(ctx context.Context, a *XAutoClaimArgs) *XAutoClaimJustIDCmd {
+	args := xAutoClaimArgs(ctx, a)
+	args = append(args, "justid")
+	cmd := NewXAutoClaimJustIDCmd(ctx, args...)
+	_ = c(ctx, cmd)
+	return cmd
+}
+
+func xAutoClaimArgs(ctx context.Context, a *XAutoClaimArgs) []interface{} {
+	args := make([]interface{}, 0, 9)
+	args = append(args, "xautoclaim", a.Stream, a.Group, a.Consumer, formatMs(ctx, a.MinIdle), a.Start)
+	if a.Count > 0 {
+		args = append(args, "count", a.Count)
+	}
+	return args
+}
+
 type XClaimArgs struct {
 	Stream   string
 	Group    string

commands_test.go

@@ -4386,6 +4386,43 @@ var _ = Describe("Commands", func() {
 				Expect(n).To(Equal(int64(3)))
 			})
 
+			It("should XAutoClaim", func() {
+				xca := &redis.XAutoClaimArgs{
+					Stream:   "stream",
+					Group:    "group",
+					Consumer: "consumer",
+					Start:    "-",
+					Count:    2,
+				}
+				msgs, start, err := client.XAutoClaim(ctx, xca).Result()
+				Expect(err).NotTo(HaveOccurred())
+				Expect(start).To(Equal("2-0"))
+				Expect(msgs).To(Equal([]redis.XMessage{{
+					ID:     "1-0",
+					Values: map[string]interface{}{"uno": "un"},
+				}, {
+					ID:     "2-0",
+					Values: map[string]interface{}{"dos": "deux"},
+				}}))
+
+				xca.Start = start
+				msgs, start, err = client.XAutoClaim(ctx, xca).Result()
+				Expect(err).NotTo(HaveOccurred())
+				Expect(start).To(Equal("3-0"))
+				Expect(msgs).To(Equal([]redis.XMessage{{
+					ID:     "2-0",
+					Values: map[string]interface{}{"dos": "deux"},
+				}, {
+					ID:     "3-0",
+					Values: map[string]interface{}{"tres": "troix"},
+				}}))
+
+				ids, start, err := client.XAutoClaimJustID(ctx, xca).Result()
+				Expect(err).NotTo(HaveOccurred())
+				Expect(start).To(Equal("3-0"))
+				Expect(ids).To(Equal([]string{"2-0", "3-0"}))
+			})
+
 			It("should XClaim", func() {
 				msgs, err := client.XClaim(ctx, &redis.XClaimArgs{
 					Stream:   "stream",