fixed func slaveInfoFieldByName range panic

Author: polefishu

pkg/client/redis/client.go

@@ -117,7 +117,7 @@ func slaveInfoFieldByName(name string, slaveInfoBlob interface{}) string {
 	slaveInfo := slaveInfoBlob.([]interface{})
 	infoLens := len(slaveInfo)
 	i := 0
-	for i < infoLens {
+	for i+1 < infoLens {
 		stringValue := slaveInfo[i].(string)
 		if stringValue == name {
 			return slaveInfo[i+1].(string)

pkg/client/redis/client_test.go

@@ -37,6 +37,8 @@ func TestGetAllRedisConfig(t *testing.T) {
 func Test_slaveInfoFieldByName(t *testing.T) {
 	slaveInfoBlobA := []interface{}{"name", "[xxxxA]:6379", "ip", "xxxxA", "port", "6379", "runid", "6f792839ab551e8dbec58e0eb3b3838d14f19a37", "flags", "slave", "link-pending-commands", "1", "link-refcount", "1", "last-ping-sent", "0", "last-ok-ping-reply", "1055", "last-ping-reply", "1055", "down-after-milliseconds", "5000", "info-refresh", "2074", "role-reported", "slave", "role-reported-time", "2983115", "master-link-down-time", "0", "master-link-status", "ok", "master-host", "xxxxA", "master-port", "6379", "slave-priority", "1", "slave-repl-offset", "124614695"}
 	slaveInfoBlobB := []interface{}{"name", "[xxxxB]:6371", "ip", "xxxxB", "port", "6371", "runid", "fake_slave_8bb90711-8f37-44e8-b3b2-589af", "flags", "slave", "link-pending-commands", "1", "link-refcount", "1", "last-ping-sent", "0", "last-ok-ping-reply", "1055", "last-ping-reply", "1055", "down-after-milliseconds", "5000", "info-refresh", "2075", "role-reported", "slave", "role-reported-time", "2983114", "master-link-down-time", "0", "master-link-status", "ok", "master-host", "xxxxB", "master-port", "6379", "slave-priority", "0", "slave-repl-offset", "124614695"}
+	slaveInfoBlobC := []interface{}{"name", "[xxxxB]:6371", "ip", "slave-priority", "slave-priority", "100"}
+	slaveInfoBlobD := []interface{}{"name", "[xxxxB]:6371", "ip", "xxxxB", "slave-priority"}
 	type args struct {
 		name          string
 		slaveInfoBlob interface{}
@@ -62,6 +64,22 @@ func Test_slaveInfoFieldByName(t *testing.T) {
 			},
 			want: "0",
 		},
+		{
+			name: "slaveC",
+			args: args{
+				name:          "slave-priority",
+				slaveInfoBlob: slaveInfoBlobC,
+			},
+			want: "100",
+		},
+		{
+			name: "slaveD",
+			args: args{
+				name:          "slave-priority",
+				slaveInfoBlob: slaveInfoBlobD,
+			},
+			want: "",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {