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purger_test.go
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purger_test.go
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package purger
import (
"context"
"fmt"
"sort"
"strings"
"testing"
"time"
"github.com/grafana/dskit/flagext"
"github.com/grafana/dskit/services"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/testutil"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/promql/parser"
"github.com/stretchr/testify/require"
"github.com/cortexproject/cortex/pkg/chunk"
"github.com/cortexproject/cortex/pkg/chunk/testutils"
util_log "github.com/cortexproject/cortex/pkg/util/log"
"github.com/cortexproject/cortex/pkg/util/test"
)
const (
userID = "userID"
modelTimeDay = model.Time(millisecondPerDay)
modelTimeHour = model.Time(time.Hour / time.Millisecond)
)
func setupTestDeleteStore(t *testing.T) *DeleteStore {
var (
deleteStoreConfig DeleteStoreConfig
tbmConfig chunk.TableManagerConfig
schemaCfg = chunk.DefaultSchemaConfig("", "v10", 0)
)
flagext.DefaultValues(&deleteStoreConfig)
flagext.DefaultValues(&tbmConfig)
mockStorage := chunk.NewMockStorage()
extraTables := []chunk.ExtraTables{{TableClient: mockStorage, Tables: deleteStoreConfig.GetTables()}}
tableManager, err := chunk.NewTableManager(tbmConfig, schemaCfg, 12*time.Hour, mockStorage, nil, extraTables, nil)
require.NoError(t, err)
require.NoError(t, tableManager.SyncTables(context.Background()))
deleteStore, err := NewDeleteStore(deleteStoreConfig, mockStorage)
require.NoError(t, err)
return deleteStore
}
func setupStoresAndPurger(t *testing.T) (*DeleteStore, chunk.Store, chunk.ObjectClient, *Purger, *prometheus.Registry) {
deleteStore := setupTestDeleteStore(t)
chunkStore, err := testutils.SetupTestChunkStore()
require.NoError(t, err)
storageClient, err := testutils.SetupTestObjectStore()
require.NoError(t, err)
purger, registry := setupPurger(t, deleteStore, chunkStore, storageClient)
return deleteStore, chunkStore, storageClient, purger, registry
}
func setupPurger(t *testing.T, deleteStore *DeleteStore, chunkStore chunk.Store, storageClient chunk.ObjectClient) (*Purger, *prometheus.Registry) {
registry := prometheus.NewRegistry()
var cfg Config
flagext.DefaultValues(&cfg)
purger, err := NewPurger(cfg, deleteStore, chunkStore, storageClient, registry)
require.NoError(t, err)
return purger, registry
}
func buildChunks(from, through model.Time, batchSize int) ([]chunk.Chunk, error) {
var chunks []chunk.Chunk
for ; from < through; from = from.Add(time.Hour) {
// creating batchSize number of chunks chunks per hour
_, testChunks, err := testutils.CreateChunks(0, batchSize, from, from.Add(time.Hour))
if err != nil {
return nil, err
}
chunks = append(chunks, testChunks...)
}
return chunks, nil
}
var purgePlanTestCases = []struct {
name string
chunkStoreDataInterval model.Interval
deleteRequestInterval model.Interval
expectedNumberOfPlans int
numChunksToDelete int
firstChunkPartialDeletionInterval *Interval
lastChunkPartialDeletionInterval *Interval
batchSize int
}{
{
name: "deleting whole hour from a one hour data",
chunkStoreDataInterval: model.Interval{End: modelTimeHour},
deleteRequestInterval: model.Interval{End: modelTimeHour},
expectedNumberOfPlans: 1,
numChunksToDelete: 1,
},
{
name: "deleting half a day from a days data",
chunkStoreDataInterval: model.Interval{End: modelTimeDay},
deleteRequestInterval: model.Interval{End: model.Time(millisecondPerDay / 2)},
expectedNumberOfPlans: 1,
numChunksToDelete: 12 + 1, // one chunk for each hour + end time touches chunk at boundary
lastChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(millisecondPerDay / 2),
EndTimestampMs: int64(millisecondPerDay / 2)},
},
{
name: "deleting a full day from 2 days data",
chunkStoreDataInterval: model.Interval{End: modelTimeDay * 2},
deleteRequestInterval: model.Interval{End: modelTimeDay},
expectedNumberOfPlans: 1,
numChunksToDelete: 24 + 1, // one chunk for each hour + end time touches chunk at boundary
lastChunkPartialDeletionInterval: &Interval{StartTimestampMs: millisecondPerDay,
EndTimestampMs: millisecondPerDay},
},
{
name: "deleting 2 days partially from 2 days data",
chunkStoreDataInterval: model.Interval{End: modelTimeDay * 2},
deleteRequestInterval: model.Interval{Start: model.Time(millisecondPerDay / 2),
End: model.Time(millisecondPerDay + millisecondPerDay/2)},
expectedNumberOfPlans: 2,
numChunksToDelete: 24 + 2, // one chunk for each hour + start and end time touches chunk at boundary
firstChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(millisecondPerDay / 2),
EndTimestampMs: int64(millisecondPerDay / 2)},
lastChunkPartialDeletionInterval: &Interval{StartTimestampMs: millisecondPerDay + millisecondPerDay/2,
EndTimestampMs: millisecondPerDay + millisecondPerDay/2},
},
{
name: "deleting 2 days partially, not aligned with hour, from 2 days data",
chunkStoreDataInterval: model.Interval{End: modelTimeDay * 2},
deleteRequestInterval: model.Interval{Start: model.Time(millisecondPerDay / 2).Add(time.Minute),
End: model.Time(millisecondPerDay + millisecondPerDay/2).Add(-time.Minute)},
expectedNumberOfPlans: 2,
numChunksToDelete: 24, // one chunk for each hour, no chunks touched at boundary
firstChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(model.Time(millisecondPerDay / 2).Add(time.Minute)),
EndTimestampMs: int64(model.Time(millisecondPerDay / 2).Add(time.Hour))},
lastChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(model.Time(millisecondPerDay + millisecondPerDay/2).Add(-time.Hour)),
EndTimestampMs: int64(model.Time(millisecondPerDay + millisecondPerDay/2).Add(-time.Minute))},
},
{
name: "deleting data outside of period of existing data",
chunkStoreDataInterval: model.Interval{End: modelTimeDay},
deleteRequestInterval: model.Interval{Start: model.Time(millisecondPerDay * 2), End: model.Time(millisecondPerDay * 3)},
expectedNumberOfPlans: 1,
numChunksToDelete: 0,
},
{
name: "building multi-day chunk and deleting part of it from first day",
chunkStoreDataInterval: model.Interval{Start: modelTimeDay.Add(-30 * time.Minute), End: modelTimeDay.Add(30 * time.Minute)},
deleteRequestInterval: model.Interval{Start: modelTimeDay.Add(-30 * time.Minute), End: modelTimeDay.Add(-15 * time.Minute)},
expectedNumberOfPlans: 1,
numChunksToDelete: 1,
firstChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(modelTimeDay.Add(-30 * time.Minute)),
EndTimestampMs: int64(modelTimeDay.Add(-15 * time.Minute))},
},
{
name: "building multi-day chunk and deleting part of it for each day",
chunkStoreDataInterval: model.Interval{Start: modelTimeDay.Add(-30 * time.Minute), End: modelTimeDay.Add(30 * time.Minute)},
deleteRequestInterval: model.Interval{Start: modelTimeDay.Add(-15 * time.Minute), End: modelTimeDay.Add(15 * time.Minute)},
expectedNumberOfPlans: 2,
numChunksToDelete: 1,
firstChunkPartialDeletionInterval: &Interval{StartTimestampMs: int64(modelTimeDay.Add(-15 * time.Minute)),
EndTimestampMs: int64(modelTimeDay.Add(15 * time.Minute))},
},
}
func TestPurger_BuildPlan(t *testing.T) {
for _, tc := range purgePlanTestCases {
for batchSize := 1; batchSize <= 5; batchSize++ {
t.Run(fmt.Sprintf("%s/batch-size=%d", tc.name, batchSize), func(t *testing.T) {
deleteStore, chunkStore, storageClient, purger, _ := setupStoresAndPurger(t)
defer func() {
purger.StopAsync()
chunkStore.Stop()
}()
chunks, err := buildChunks(tc.chunkStoreDataInterval.Start, tc.chunkStoreDataInterval.End, batchSize)
require.NoError(t, err)
require.NoError(t, chunkStore.Put(context.Background(), chunks))
err = deleteStore.AddDeleteRequest(context.Background(), userID, tc.deleteRequestInterval.Start,
tc.deleteRequestInterval.End, []string{"foo"})
require.NoError(t, err)
deleteRequests, err := deleteStore.GetAllDeleteRequestsForUser(context.Background(), userID)
require.NoError(t, err)
deleteRequest := deleteRequests[0]
requestWithLogger := makeDeleteRequestWithLogger(deleteRequest, util_log.Logger)
err = purger.buildDeletePlan(requestWithLogger)
require.NoError(t, err)
planPath := fmt.Sprintf("%s:%s/", userID, deleteRequest.RequestID)
plans, _, err := storageClient.List(context.Background(), planPath, "/")
require.NoError(t, err)
require.Equal(t, tc.expectedNumberOfPlans, len(plans))
numPlans := tc.expectedNumberOfPlans
var nilPurgePlanInterval *Interval
numChunks := 0
chunkIDs := map[string]struct{}{}
for i := range plans {
deletePlan, err := purger.getDeletePlan(context.Background(), userID, deleteRequest.RequestID, i)
require.NoError(t, err)
for _, chunksGroup := range deletePlan.ChunksGroup {
numChunksInGroup := len(chunksGroup.Chunks)
chunks := chunksGroup.Chunks
numChunks += numChunksInGroup
sort.Slice(chunks, func(i, j int) bool {
chunkI, err := chunk.ParseExternalKey(userID, chunks[i].ID)
require.NoError(t, err)
chunkJ, err := chunk.ParseExternalKey(userID, chunks[j].ID)
require.NoError(t, err)
return chunkI.From < chunkJ.From
})
for j, chunkDetails := range chunksGroup.Chunks {
chunkIDs[chunkDetails.ID] = struct{}{}
if i == 0 && j == 0 && tc.firstChunkPartialDeletionInterval != nil {
require.Equal(t, *tc.firstChunkPartialDeletionInterval, *chunkDetails.PartiallyDeletedInterval)
} else if i == numPlans-1 && j == numChunksInGroup-1 && tc.lastChunkPartialDeletionInterval != nil {
require.Equal(t, *tc.lastChunkPartialDeletionInterval, *chunkDetails.PartiallyDeletedInterval)
} else {
require.Equal(t, nilPurgePlanInterval, chunkDetails.PartiallyDeletedInterval)
}
}
}
}
require.Equal(t, tc.numChunksToDelete*batchSize, len(chunkIDs))
require.Equal(t, float64(tc.numChunksToDelete*batchSize), testutil.ToFloat64(purger.metrics.deleteRequestsChunksSelectedTotal))
})
}
}
}
func TestPurger_ExecutePlan(t *testing.T) {
fooMetricNameMatcher, err := parser.ParseMetricSelector(`foo`)
if err != nil {
t.Fatal(err)
}
for _, tc := range purgePlanTestCases {
for batchSize := 1; batchSize <= 5; batchSize++ {
t.Run(fmt.Sprintf("%s/batch-size=%d", tc.name, batchSize), func(t *testing.T) {
deleteStore, chunkStore, _, purger, _ := setupStoresAndPurger(t)
defer func() {
purger.StopAsync()
chunkStore.Stop()
}()
chunks, err := buildChunks(tc.chunkStoreDataInterval.Start, tc.chunkStoreDataInterval.End, batchSize)
require.NoError(t, err)
require.NoError(t, chunkStore.Put(context.Background(), chunks))
// calculate the expected number of chunks that should be there in store before deletion
chunkStoreDataIntervalTotal := tc.chunkStoreDataInterval.End - tc.chunkStoreDataInterval.Start
numChunksExpected := int(chunkStoreDataIntervalTotal / model.Time(time.Hour/time.Millisecond))
// see if store actually has expected number of chunks
chunks, err = chunkStore.Get(context.Background(), userID, tc.chunkStoreDataInterval.Start, tc.chunkStoreDataInterval.End, fooMetricNameMatcher...)
require.NoError(t, err)
require.Equal(t, numChunksExpected*batchSize, len(chunks))
// delete chunks
err = deleteStore.AddDeleteRequest(context.Background(), userID, tc.deleteRequestInterval.Start,
tc.deleteRequestInterval.End, []string{"foo"})
require.NoError(t, err)
// get the delete request
deleteRequests, err := deleteStore.GetAllDeleteRequestsForUser(context.Background(), userID)
require.NoError(t, err)
deleteRequest := deleteRequests[0]
requestWithLogger := makeDeleteRequestWithLogger(deleteRequest, util_log.Logger)
err = purger.buildDeletePlan(requestWithLogger)
require.NoError(t, err)
// execute all the plans
for i := 0; i < tc.expectedNumberOfPlans; i++ {
err := purger.executePlan(userID, deleteRequest.RequestID, i, requestWithLogger.logger)
require.NoError(t, err)
}
// calculate the expected number of chunks that should be there in store after deletion
numChunksExpectedAfterDeletion := 0
for chunkStart := tc.chunkStoreDataInterval.Start; chunkStart < tc.chunkStoreDataInterval.End; chunkStart += modelTimeHour {
numChunksExpectedAfterDeletion += len(getNonDeletedIntervals(model.Interval{Start: chunkStart, End: chunkStart + modelTimeHour}, tc.deleteRequestInterval))
}
// see if store actually has expected number of chunks
chunks, err = chunkStore.Get(context.Background(), userID, tc.chunkStoreDataInterval.Start, tc.chunkStoreDataInterval.End, fooMetricNameMatcher...)
require.NoError(t, err)
require.Equal(t, numChunksExpectedAfterDeletion*batchSize, len(chunks))
})
}
}
}
func TestPurger_Restarts(t *testing.T) {
fooMetricNameMatcher, err := parser.ParseMetricSelector(`foo`)
if err != nil {
t.Fatal(err)
}
deleteStore, chunkStore, storageClient, purger, _ := setupStoresAndPurger(t)
defer func() {
chunkStore.Stop()
}()
chunks, err := buildChunks(0, model.Time(0).Add(10*24*time.Hour), 1)
require.NoError(t, err)
require.NoError(t, chunkStore.Put(context.Background(), chunks))
// delete chunks
err = deleteStore.AddDeleteRequest(context.Background(), userID, model.Time(0).Add(24*time.Hour),
model.Time(0).Add(8*24*time.Hour), []string{"foo"})
require.NoError(t, err)
// get the delete request
deleteRequests, err := deleteStore.GetAllDeleteRequestsForUser(context.Background(), userID)
require.NoError(t, err)
deleteRequest := deleteRequests[0]
requestWithLogger := makeDeleteRequestWithLogger(deleteRequest, util_log.Logger)
err = purger.buildDeletePlan(requestWithLogger)
require.NoError(t, err)
// stop the existing purger
require.NoError(t, services.StopAndAwaitTerminated(context.Background(), purger))
// create a new purger to check whether it picks up in process delete requests
newPurger, _ := setupPurger(t, deleteStore, chunkStore, storageClient)
// load in process delete requests by calling Run
require.NoError(t, services.StartAndAwaitRunning(context.Background(), newPurger))
defer newPurger.StopAsync()
test.Poll(t, time.Minute, 0, func() interface{} {
return newPurger.inProcessRequests.len()
})
// check whether data got deleted from the store since delete request has been processed
chunks, err = chunkStore.Get(context.Background(), userID, 0, model.Time(0).Add(10*24*time.Hour), fooMetricNameMatcher...)
require.NoError(t, err)
// we are deleting 7 days out of 10 so there should we 3 days data left in store which means 72 chunks
require.Equal(t, 72, len(chunks))
deleteRequests, err = deleteStore.GetAllDeleteRequestsForUser(context.Background(), userID)
require.NoError(t, err)
require.Equal(t, StatusProcessed, deleteRequests[0].Status)
require.Equal(t, float64(1), testutil.ToFloat64(newPurger.metrics.deleteRequestsProcessedTotal))
require.PanicsWithError(t, "collected 0 metrics instead of exactly 1", func() {
testutil.ToFloat64(newPurger.metrics.deleteRequestsProcessingFailures)
})
}
func TestPurger_Metrics(t *testing.T) {
deleteStore, chunkStore, storageClient, purger, registry := setupStoresAndPurger(t)
defer func() {
purger.StopAsync()
chunkStore.Stop()
}()
// add delete requests without starting purger loops to load and process delete requests.
// add delete request whose createdAt is now
err := deleteStore.AddDeleteRequest(context.Background(), userID, model.Time(0).Add(24*time.Hour),
model.Time(0).Add(2*24*time.Hour), []string{"foo"})
require.NoError(t, err)
// add delete request whose createdAt is 2 days back
err = deleteStore.addDeleteRequest(context.Background(), userID, model.Now().Add(-2*24*time.Hour), model.Time(0).Add(24*time.Hour),
model.Time(0).Add(2*24*time.Hour), []string{"foo"})
require.NoError(t, err)
// add delete request whose createdAt is 3 days back
err = deleteStore.addDeleteRequest(context.Background(), userID, model.Now().Add(-3*24*time.Hour), model.Time(0).Add(24*time.Hour),
model.Time(0).Add(8*24*time.Hour), []string{"foo"})
require.NoError(t, err)
// load new delete requests for processing
require.NoError(t, purger.pullDeleteRequestsToPlanDeletes())
// there must be 2 pending delete requests, oldest being 2 days old since its cancellation time is over
require.InDelta(t, float64(2*86400), testutil.ToFloat64(purger.metrics.oldestPendingDeleteRequestAgeSeconds), 1)
require.Equal(t, float64(2), testutil.ToFloat64(purger.metrics.pendingDeleteRequestsCount))
// stop the existing purger
require.NoError(t, services.StopAndAwaitTerminated(context.Background(), purger))
// create a new purger
purger, registry = setupPurger(t, deleteStore, chunkStore, storageClient)
// load in process delete requests by starting the service
require.NoError(t, services.StartAndAwaitRunning(context.Background(), purger))
defer purger.StopAsync()
// wait until purger_delete_requests_processed_total starts to show up.
test.Poll(t, 2*time.Second, 1, func() interface{} {
count, err := testutil.GatherAndCount(registry, "cortex_purger_delete_requests_processed_total")
require.NoError(t, err)
return count
})
// wait until both the pending delete requests are processed.
test.Poll(t, 2*time.Second, float64(2), func() interface{} {
return testutil.ToFloat64(purger.metrics.deleteRequestsProcessedTotal)
})
// wait until oldest pending request age becomes 0
test.Poll(t, 2*time.Second, float64(0), func() interface{} {
return testutil.ToFloat64(purger.metrics.oldestPendingDeleteRequestAgeSeconds)
})
// wait until pending delete requests count becomes 0
test.Poll(t, 2*time.Second, float64(0), func() interface{} {
return testutil.ToFloat64(purger.metrics.pendingDeleteRequestsCount)
})
}
func TestPurger_retryFailedRequests(t *testing.T) {
// setup chunks store
indexMockStorage := chunk.NewMockStorage()
chunksMockStorage := chunk.NewMockStorage()
deleteStore := setupTestDeleteStore(t)
chunkStore, err := testutils.SetupTestChunkStoreWithClients(indexMockStorage, chunksMockStorage, indexMockStorage)
require.NoError(t, err)
// create a purger instance
purgerMockStorage := chunk.NewMockStorage()
purger, _ := setupPurger(t, deleteStore, chunkStore, purgerMockStorage)
require.NoError(t, services.StartAndAwaitRunning(context.Background(), purger))
defer func() {
require.NoError(t, services.StopAndAwaitTerminated(context.Background(), purger))
}()
// add some chunks
chunks, err := buildChunks(0, model.Time(0).Add(3*24*time.Hour), 1)
require.NoError(t, err)
require.NoError(t, chunkStore.Put(context.Background(), chunks))
// add a request to delete some chunks
err = deleteStore.addDeleteRequest(context.Background(), userID, model.Now().Add(-25*time.Hour), model.Time(0).Add(24*time.Hour),
model.Time(0).Add(2*24*time.Hour), []string{"foo"})
require.NoError(t, err)
// change purgerMockStorage to allow only reads. This would fail putting plans to the storage and hence fail build plans operation.
purgerMockStorage.SetMode(chunk.MockStorageModeReadOnly)
// pull requests to process and ensure that it has failed.
err = purger.pullDeleteRequestsToPlanDeletes()
require.Error(t, err)
require.True(t, strings.Contains(err.Error(), "permission denied"))
// there must be 1 delete request in process and the userID must be in failed requests list.
require.NotNil(t, purger.inProcessRequests.get(userID))
require.Len(t, purger.inProcessRequests.listUsersWithFailedRequest(), 1)
// now allow writes to purgerMockStorage to allow building plans to succeed.
purgerMockStorage.SetMode(chunk.MockStorageModeReadWrite)
// but change mode of chunksMockStorage to read only which would deny permission to delete any chunks and in turn
// fail to execute delete plans.
chunksMockStorage.SetMode(chunk.MockStorageModeReadOnly)
// retry processing of failed requests
purger.retryFailedRequests()
// the delete request status should now change to StatusDeleting since the building of plan should have succeeded.
test.Poll(t, time.Second, StatusDeleting, func() interface{} {
return purger.inProcessRequests.get(userID).Status
})
// the request should have failed again since we did not give permission to delete chunks.
test.Poll(t, time.Second, 1, func() interface{} {
return len(purger.inProcessRequests.listUsersWithFailedRequest())
})
// now allow writes to chunksMockStorage so the requests do not fail anymore.
chunksMockStorage.SetMode(chunk.MockStorageModeReadWrite)
// retry processing of failed requests.
purger.retryFailedRequests()
// there must be no in process requests anymore.
test.Poll(t, time.Second, true, func() interface{} {
return purger.inProcessRequests.get(userID) == nil
})
// there must be no users having failed requests.
require.Len(t, purger.inProcessRequests.listUsersWithFailedRequest(), 0)
}
func getNonDeletedIntervals(originalInterval, deletedInterval model.Interval) []model.Interval {
nonDeletedIntervals := []model.Interval{}
if deletedInterval.Start > originalInterval.Start {
nonDeletedIntervals = append(nonDeletedIntervals, model.Interval{Start: originalInterval.Start, End: deletedInterval.Start - 1})
}
if deletedInterval.End < originalInterval.End {
nonDeletedIntervals = append(nonDeletedIntervals, model.Interval{Start: deletedInterval.End + 1, End: originalInterval.End})
}
return nonDeletedIntervals
}