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// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tsdb
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import (
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"io/ioutil"
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"math"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/go-kit/kit/log"
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"github.com/pkg/errors"
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dto "github.com/prometheus/client_model/go"
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"github.com/prometheus/tsdb/chunks"
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"github.com/prometheus/tsdb/labels"
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"github.com/prometheus/tsdb/testutil"
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)
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func TestSplitByRange(t *testing.T) {
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cases := []struct {
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trange int64
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ranges [][2]int64
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output [][][2]int64
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}{
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{
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trange: 60,
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ranges: [][2]int64{{0, 10}},
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output: [][][2]int64{
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{{0, 10}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{0, 60}},
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output: [][][2]int64{
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{{0, 60}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{0, 10}, {9, 15}, {30, 60}},
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output: [][][2]int64{
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{{0, 10}, {9, 15}, {30, 60}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{70, 90}, {125, 130}, {130, 180}, {1000, 1001}},
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output: [][][2]int64{
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{{70, 90}},
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{{125, 130}, {130, 180}},
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{{1000, 1001}},
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},
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},
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// Mis-aligned or too-large blocks are ignored.
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{
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trange: 60,
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ranges: [][2]int64{{50, 70}, {70, 80}},
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output: [][][2]int64{
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{{70, 80}},
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},
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},
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{
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trange: 72,
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ranges: [][2]int64{{0, 144}, {144, 216}, {216, 288}},
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output: [][][2]int64{
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{{144, 216}},
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{{216, 288}},
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},
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},
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// Various awkward edge cases easy to hit with negative numbers.
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{
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trange: 60,
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ranges: [][2]int64{{-10, -5}},
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output: [][][2]int64{
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{{-10, -5}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{-60, -50}, {-10, -5}},
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output: [][][2]int64{
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{{-60, -50}, {-10, -5}},
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},
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},
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{
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trange: 60,
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ranges: [][2]int64{{-60, -50}, {-10, -5}, {0, 15}},
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output: [][][2]int64{
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{{-60, -50}, {-10, -5}},
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{{0, 15}},
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},
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},
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}
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for _, c := range cases {
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// Transform input range tuples into dirMetas.
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blocks := make([]dirMeta, 0, len(c.ranges))
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for _, r := range c.ranges {
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blocks = append(blocks, dirMeta{
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meta: &BlockMeta{
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MinTime: r[0],
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MaxTime: r[1],
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},
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})
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}
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// Transform output range tuples into dirMetas.
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exp := make([][]dirMeta, len(c.output))
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for i, group := range c.output {
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for _, r := range group {
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exp[i] = append(exp[i], dirMeta{
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meta: &BlockMeta{MinTime: r[0], MaxTime: r[1]},
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})
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}
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}
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testutil.Equals(t, exp, splitByRange(blocks, c.trange))
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}
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}
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// See https://github.com/prometheus/prometheus/issues/3064
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func TestNoPanicFor0Tombstones(t *testing.T) {
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metas := []dirMeta{
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{
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dir: "1",
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meta: &BlockMeta{
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MinTime: 0,
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MaxTime: 100,
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},
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},
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{
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dir: "2",
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meta: &BlockMeta{
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MinTime: 101,
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MaxTime: 200,
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},
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},
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}
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c, err := NewLeveledCompactor(nil, nil, []int64{50}, nil)
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testutil.Ok(t, err)
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c.plan(metas)
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}
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func TestLeveledCompactor_plan(t *testing.T) {
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// This mimicks our default ExponentialBlockRanges with min block size equals to 20.
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compactor, err := NewLeveledCompactor(nil, nil, []int64{
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20,
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60,
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180,
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540,
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1620,
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}, nil)
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testutil.Ok(t, err)
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cases := []struct {
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metas []dirMeta
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expected []string
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}{
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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},
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expected: nil,
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},
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// We should wait for four blocks of size 20 to appear before compacting.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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},
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expected: nil,
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},
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// We should wait for a next block of size 20 to appear before compacting
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// the existing ones. We have three, but we ignore the fresh one from WAl.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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},
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expected: nil,
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},
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// Block to fill the entire parent range appeared – should be compacted.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 80, nil),
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},
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expected: []string{"1", "2", "3"},
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},
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// Block for the next parent range appeared with gap with size 20. Nothing will happen in the first one
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// anymore but we ignore fresh one still, so no compaction.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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},
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expected: nil,
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},
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// Block for the next parent range appeared, and we have a gap with size 20 between second and third block.
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// We will not get this missed gap anymore and we should compact just these two.
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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metaRange("4", 80, 100, nil),
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},
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expected: []string{"1", "2"},
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},
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{
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// We have 20, 20, 20, 60, 60 range blocks. "5" is marked as fresh one.
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 120, 180, nil),
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},
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expected: []string{"1", "2", "3"},
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},
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{
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// We have 20, 60, 20, 60, 240 range blocks. We can compact 20 + 60 + 60.
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metas: []dirMeta{
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metaRange("2", 20, 40, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 960, 980, nil), // Fresh one.
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metaRange("6", 120, 180, nil),
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metaRange("7", 720, 960, nil),
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},
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expected: []string{"2", "4", "6"},
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},
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// Do not select large blocks that have many tombstones when there is no fresh block.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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},
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expected: nil,
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},
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// Select large blocks that have many tombstones when fresh appears.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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metaRange("2", 540, 560, nil),
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},
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expected: []string{"1"},
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},
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// For small blocks, do not compact tombstones, even when fresh appears.
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{
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metas: []dirMeta{
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metaRange("1", 0, 60, &BlockStats{
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NumSeries: 10,
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NumTombstones: 3,
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}),
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metaRange("2", 60, 80, nil),
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},
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expected: nil,
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},
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// Regression test: we were stuck in a compact loop where we always recompacted
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// the same block when tombstones and series counts were zero.
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{
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metas: []dirMeta{
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metaRange("1", 0, 540, &BlockStats{
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NumSeries: 0,
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NumTombstones: 0,
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}),
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metaRange("2", 540, 560, nil),
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},
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expected: nil,
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},
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// Regression test: we were wrongly assuming that new block is fresh from WAL when its ULID is newest.
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// We need to actually look on max time instead.
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//
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// With previous, wrong approach "8" block was ignored, so we were wrongly compacting 5 and 7 and introducing
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// block overlaps.
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{
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metas: []dirMeta{
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metaRange("5", 0, 360, nil),
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metaRange("6", 540, 560, nil), // Fresh one.
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metaRange("7", 360, 420, nil),
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metaRange("8", 420, 540, nil),
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},
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expected: []string{"7", "8"},
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},
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}
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for _, c := range cases {
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if !t.Run("", func(t *testing.T) {
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res, err := compactor.plan(c.metas)
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testutil.Ok(t, err)
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testutil.Equals(t, c.expected, res)
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}) {
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return
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}
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}
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}
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func TestRangeWithFailedCompactionWontGetSelected(t *testing.T) {
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compactor, err := NewLeveledCompactor(nil, nil, []int64{
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20,
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60,
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240,
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720,
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2160,
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}, nil)
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testutil.Ok(t, err)
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cases := []struct {
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metas []dirMeta
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}{
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 80, nil),
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},
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},
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 60, 80, nil),
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metaRange("4", 80, 100, nil),
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},
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},
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{
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metas: []dirMeta{
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metaRange("1", 0, 20, nil),
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metaRange("2", 20, 40, nil),
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metaRange("3", 40, 60, nil),
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metaRange("4", 60, 120, nil),
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metaRange("5", 120, 180, nil),
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metaRange("6", 180, 200, nil),
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},
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},
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}
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for _, c := range cases {
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c.metas[1].meta.Compaction.Failed = true
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res, err := compactor.plan(c.metas)
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testutil.Ok(t, err)
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testutil.Equals(t, []string(nil), res)
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}
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}
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func TestCompactionFailWillCleanUpTempDir(t *testing.T) {
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compactor, err := NewLeveledCompactor(nil, log.NewNopLogger(), []int64{
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20,
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60,
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240,
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720,
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2160,
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}, nil)
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testutil.Ok(t, err)
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tmpdir, err := ioutil.TempDir("", "test")
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testutil.Ok(t, err)
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defer os.RemoveAll(tmpdir)
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testutil.NotOk(t, compactor.write(tmpdir, &BlockMeta{}, erringBReader{}))
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_, err = os.Stat(filepath.Join(tmpdir, BlockMeta{}.ULID.String()) + ".tmp")
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testutil.Assert(t, os.IsNotExist(err), "directory is not cleaned up")
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}
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func metaRange(name string, mint, maxt int64, stats *BlockStats) dirMeta {
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meta := &BlockMeta{MinTime: mint, MaxTime: maxt}
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if stats != nil {
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meta.Stats = *stats
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}
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return dirMeta{
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dir: name,
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meta: meta,
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}
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}
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type erringBReader struct{}
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func (erringBReader) Index() (IndexReader, error) { return nil, errors.New("index") }
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func (erringBReader) Chunks() (ChunkReader, error) { return nil, errors.New("chunks") }
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func (erringBReader) Tombstones() (TombstoneReader, error) { return nil, errors.New("tombstones") }
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type nopChunkWriter struct{}
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func (nopChunkWriter) WriteChunks(chunks ...chunks.Meta) error { return nil }
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func (nopChunkWriter) Close() error { return nil }
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func TestCompaction_populateBlock(t *testing.T) {
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var populateBlocksCases = []struct {
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title string
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inputSeriesSamples [][]seriesSamples
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compactMinTime int64
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compactMaxTime int64 // When not defined the test runner sets a default of math.MaxInt64.
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expSeriesSamples []seriesSamples
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expErr error
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}{
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{
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title: "Populate block from empty input should return error.",
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inputSeriesSamples: [][]seriesSamples{},
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expErr: errors.New("cannot populate block from no readers"),
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},
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{
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// Populate from single block without chunks. We expect these kind of series being ignored.
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inputSeriesSamples: [][]seriesSamples{
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{
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{
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lset: map[string]string{"a": "b"},
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},
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},
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},
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},
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{
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title: "Populate from single block. We expect the same samples at the output.",
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inputSeriesSamples: [][]seriesSamples{
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{
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{
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lset: map[string]string{"a": "b"},
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chunks: [][]sample{{{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}},
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},
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},
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},
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expSeriesSamples: []seriesSamples{
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{
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lset: map[string]string{"a": "b"},
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chunks: [][]sample{{{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}},
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},
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},
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|
|
},
|
|
|
{
|
|
|
title: "Populate from two blocks.",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 9}}, {{t: 10}, {t: 19}}},
|
|
|
},
|
|
|
{
|
|
|
// no-chunk series should be dropped.
|
|
|
lset: map[string]string{"a": "empty"},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 21}, {t: 30}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 40}, {t: 45}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
expSeriesSamples: []seriesSamples{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}, {{t: 21}, {t: 30}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 9}}, {{t: 10}, {t: 19}}, {{t: 40}, {t: 45}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
title: "Populate from two blocks showing that order is maintained.",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 21}, {t: 30}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 40}, {t: 45}}},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 9}}, {{t: 10}, {t: 19}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
expSeriesSamples: []seriesSamples{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 21}, {t: 30}}, {{t: 0}, {t: 10}}, {{t: 11}, {t: 20}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "c"},
|
|
|
chunks: [][]sample{{{t: 40}, {t: 45}}, {{t: 1}, {t: 9}}, {{t: 10}, {t: 19}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
title: "Populate from two blocks showing that order or series is sorted.",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "4"},
|
|
|
chunks: [][]sample{{{t: 5}, {t: 7}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "3"},
|
|
|
chunks: [][]sample{{{t: 5}, {t: 6}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "same"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 4}}},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "2"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 3}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "1"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "same"},
|
|
|
chunks: [][]sample{{{t: 5}, {t: 8}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
expSeriesSamples: []seriesSamples{
|
|
|
{
|
|
|
lset: map[string]string{"a": "1"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "2"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 3}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "3"},
|
|
|
chunks: [][]sample{{{t: 5}, {t: 6}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "4"},
|
|
|
chunks: [][]sample{{{t: 5}, {t: 7}}},
|
|
|
},
|
|
|
{
|
|
|
lset: map[string]string{"a": "same"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 4}}, {{t: 5}, {t: 8}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
// This should not happened because head block is making sure the chunks are not crossing block boundaries.
|
|
|
title: "Populate from single block containing chunk outside of compact meta time range.",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}, {{t: 10}, {t: 30}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
compactMinTime: 0,
|
|
|
compactMaxTime: 20,
|
|
|
expErr: errors.New("found chunk with minTime: 10 maxTime: 30 outside of compacted minTime: 0 maxTime: 20"),
|
|
|
},
|
|
|
{
|
|
|
// Introduced by https://github.com/prometheus/tsdb/issues/347.
|
|
|
title: "Populate from single block containing extra chunk",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "issue347"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}, {{t: 10}, {t: 20}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
compactMinTime: 0,
|
|
|
compactMaxTime: 10,
|
|
|
expErr: errors.New("found chunk with minTime: 10 maxTime: 20 outside of compacted minTime: 0 maxTime: 10"),
|
|
|
},
|
|
|
{
|
|
|
// No special deduplication expected.
|
|
|
title: "Populate from two blocks containing duplicated chunk.",
|
|
|
inputSeriesSamples: [][]seriesSamples{
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}, {{t: 10}, {t: 20}}},
|
|
|
},
|
|
|
},
|
|
|
{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 10}, {t: 20}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
expSeriesSamples: []seriesSamples{
|
|
|
{
|
|
|
lset: map[string]string{"a": "b"},
|
|
|
chunks: [][]sample{{{t: 1}, {t: 2}}, {{t: 10}, {t: 20}}, {{t: 10}, {t: 20}}},
|
|
|
},
|
|
|
},
|
|
|
},
|
|
|
}
|
|
|
|
|
|
for _, tc := range populateBlocksCases {
|
|
|
if ok := t.Run(tc.title, func(t *testing.T) {
|
|
|
blocks := make([]BlockReader, 0, len(tc.inputSeriesSamples))
|
|
|
for _, b := range tc.inputSeriesSamples {
|
|
|
ir, cr := createIdxChkReaders(b)
|
|
|
blocks = append(blocks, &mockBReader{ir: ir, cr: cr})
|
|
|
}
|
|
|
|
|
|
c, err := NewLeveledCompactor(nil, nil, []int64{0}, nil)
|
|
|
testutil.Ok(t, err)
|
|
|
|
|
|
meta := &BlockMeta{
|
|
|
MinTime: tc.compactMinTime,
|
|
|
MaxTime: tc.compactMaxTime,
|
|
|
}
|
|
|
if meta.MaxTime == 0 {
|
|
|
meta.MaxTime = math.MaxInt64
|
|
|
}
|
|
|
|
|
|
iw := &mockIndexWriter{}
|
|
|
err = c.populateBlock(blocks, meta, iw, nopChunkWriter{})
|
|
|
if tc.expErr != nil {
|
|
|
testutil.NotOk(t, err)
|
|
|
testutil.Equals(t, tc.expErr.Error(), err.Error())
|
|
|
return
|
|
|
}
|
|
|
testutil.Ok(t, err)
|
|
|
|
|
|
testutil.Equals(t, tc.expSeriesSamples, iw.series)
|
|
|
|
|
|
// Check if stats are calculated properly.
|
|
|
s := BlockStats{
|
|
|
NumSeries: uint64(len(tc.expSeriesSamples)),
|
|
|
}
|
|
|
for _, series := range tc.expSeriesSamples {
|
|
|
s.NumChunks += uint64(len(series.chunks))
|
|
|
for _, chk := range series.chunks {
|
|
|
s.NumSamples += uint64(len(chk))
|
|
|
}
|
|
|
}
|
|
|
testutil.Equals(t, s, meta.Stats)
|
|
|
}); !ok {
|
|
|
return
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// TestDisableAutoCompactions checks that we can
|
|
|
// disable and enable the auto compaction.
|
|
|
// This is needed for unit tests that rely on
|
|
|
// checking state before and after a compaction.
|
|
|
func TestDisableAutoCompactions(t *testing.T) {
|
|
|
db, close := openTestDB(t, nil)
|
|
|
defer close()
|
|
|
defer db.Close()
|
|
|
|
|
|
blockRange := DefaultOptions.BlockRanges[0]
|
|
|
label := labels.FromStrings("foo", "bar")
|
|
|
|
|
|
// Trigger a compaction to check that it was skipped and
|
|
|
// no new blocks were created when compaction is disabled.
|
|
|
db.DisableCompactions()
|
|
|
app := db.Appender()
|
|
|
for i := int64(0); i < 3; i++ {
|
|
|
_, err := app.Add(label, i*blockRange, 0)
|
|
|
testutil.Ok(t, err)
|
|
|
_, err = app.Add(label, i*blockRange+1000, 0)
|
|
|
testutil.Ok(t, err)
|
|
|
}
|
|
|
testutil.Ok(t, app.Commit())
|
|
|
|
|
|
select {
|
|
|
case db.compactc <- struct{}{}:
|
|
|
default:
|
|
|
}
|
|
|
|
|
|
m := &dto.Metric{}
|
|
|
for x := 0; x < 10; x++ {
|
|
|
db.metrics.compactionsSkipped.Write(m)
|
|
|
if *m.Counter.Value > float64(0) {
|
|
|
break
|
|
|
}
|
|
|
time.Sleep(10 * time.Millisecond)
|
|
|
}
|
|
|
|
|
|
testutil.Assert(t, *m.Counter.Value > float64(0), "No compaction was skipped after the set timeout.")
|
|
|
testutil.Equals(t, 0, len(db.blocks))
|
|
|
|
|
|
// Enable the compaction, trigger it and check that the block is persisted.
|
|
|
db.EnableCompactions()
|
|
|
select {
|
|
|
case db.compactc <- struct{}{}:
|
|
|
default:
|
|
|
}
|
|
|
for x := 0; x < 100; x++ {
|
|
|
if len(db.Blocks()) > 0 {
|
|
|
break
|
|
|
}
|
|
|
time.Sleep(100 * time.Millisecond)
|
|
|
}
|
|
|
testutil.Assert(t, len(db.Blocks()) > 0, "No block was persisted after the set timeout.")
|
|
|
}
|
