/
testutil.go
194 lines (149 loc) · 5.54 KB
/
testutil.go
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package testutil
import (
"context"
"fmt"
"io"
"os"
"path/filepath"
"strconv"
"sync"
"testing"
"github.com/cortexproject/cortex/pkg/chunk"
"github.com/cortexproject/cortex/pkg/chunk/local"
chunk_util "github.com/cortexproject/cortex/pkg/chunk/util"
"github.com/klauspost/compress/gzip"
"github.com/stretchr/testify/require"
"go.etcd.io/bbolt"
)
var boltBucketName = []byte("index")
func AddRecordsToDB(t *testing.T, path string, dbClient *local.BoltIndexClient, start, numRecords int) {
db, err := local.OpenBoltdbFile(path)
require.NoError(t, err)
batch := dbClient.NewWriteBatch()
AddRecordsToBatch(batch, "test", start, numRecords)
require.NoError(t, dbClient.WriteToDB(context.Background(), db, batch.(*local.BoltWriteBatch).Writes["test"]))
require.NoError(t, db.Sync())
require.NoError(t, db.Close())
}
func AddRecordsToBatch(batch chunk.WriteBatch, tableName string, start, numRecords int) {
for i := 0; i < numRecords; i++ {
rec := []byte(strconv.Itoa(start + i))
batch.Add(tableName, "", rec, rec)
}
}
type SingleTableQuerier interface {
MultiQueries(ctx context.Context, queries []chunk.IndexQuery, callback chunk_util.Callback) error
}
func TestSingleTableQuery(t *testing.T, queries []chunk.IndexQuery, querier SingleTableQuerier, start, numRecords int) {
minValue := start
maxValue := start + numRecords
fetchedRecords := make(map[string]string)
err := querier.MultiQueries(context.Background(), queries, makeTestCallback(t, minValue, maxValue, fetchedRecords))
require.NoError(t, err)
require.Len(t, fetchedRecords, numRecords)
}
type SingleDBQuerier interface {
QueryDB(ctx context.Context, db *bbolt.DB, query chunk.IndexQuery, callback func(chunk.IndexQuery, chunk.ReadBatch) (shouldContinue bool)) error
}
func TestSingleDBQuery(t *testing.T, query chunk.IndexQuery, db *bbolt.DB, querier SingleDBQuerier, start, numRecords int) {
minValue := start
maxValue := start + numRecords
fetchedRecords := make(map[string]string)
err := querier.QueryDB(context.Background(), db, query, makeTestCallback(t, minValue, maxValue, fetchedRecords))
require.NoError(t, err)
require.Len(t, fetchedRecords, numRecords)
}
type MultiTableQuerier interface {
QueryPages(ctx context.Context, queries []chunk.IndexQuery, callback chunk_util.Callback) error
}
func TestMultiTableQuery(t *testing.T, queries []chunk.IndexQuery, querier MultiTableQuerier, start, numRecords int) {
minValue := start
maxValue := start + numRecords
fetchedRecords := make(map[string]string)
err := querier.QueryPages(context.Background(), queries, makeTestCallback(t, minValue, maxValue, fetchedRecords))
require.NoError(t, err)
require.Len(t, fetchedRecords, numRecords)
}
func makeTestCallback(t *testing.T, minValue, maxValue int, records map[string]string) func(query chunk.IndexQuery, batch chunk.ReadBatch) (shouldContinue bool) {
recordsMtx := sync.Mutex{}
return func(query chunk.IndexQuery, batch chunk.ReadBatch) (shouldContinue bool) {
itr := batch.Iterator()
for itr.Next() {
require.Equal(t, itr.RangeValue(), itr.Value())
rec, err := strconv.Atoi(string(itr.Value()))
require.NoError(t, err)
require.GreaterOrEqual(t, rec, minValue)
require.LessOrEqual(t, rec, maxValue)
recordsMtx.Lock()
records[string(itr.RangeValue())] = string(itr.Value())
recordsMtx.Unlock()
}
return true
}
}
func CompareDBs(t *testing.T, db1, db2 *bbolt.DB) {
db1Records := readDB(t, db1)
db2Records := readDB(t, db2)
require.Equal(t, db1Records, db2Records)
}
func readDB(t *testing.T, db *bbolt.DB) map[string]string {
dbRecords := map[string]string{}
err := db.View(func(tx *bbolt.Tx) error {
b := tx.Bucket(boltBucketName)
require.NotNil(t, b)
return b.ForEach(func(k, v []byte) error {
dbRecords[string(k)] = string(v)
return nil
})
})
require.NoError(t, err)
return dbRecords
}
type DBRecords struct {
Start, NumRecords int
}
func SetupDBTablesAtPath(t *testing.T, tableName, path string, dbs map[string]DBRecords, compressRandomFiles bool) string {
boltIndexClient, err := local.NewBoltDBIndexClient(local.BoltDBConfig{Directory: path})
require.NoError(t, err)
defer boltIndexClient.Stop()
tablePath := filepath.Join(path, tableName)
require.NoError(t, chunk_util.EnsureDirectory(tablePath))
var i int
for name, dbRecords := range dbs {
AddRecordsToDB(t, filepath.Join(tablePath, name), boltIndexClient, dbRecords.Start, dbRecords.NumRecords)
if compressRandomFiles && i%2 == 0 {
compressFile(t, filepath.Join(tablePath, name))
}
i++
}
return tablePath
}
func compressFile(t *testing.T, filepath string) {
uncompressedFile, err := os.Open(filepath)
require.NoError(t, err)
compressedFile, err := os.Create(fmt.Sprintf("%s.gz", filepath))
require.NoError(t, err)
compressedWriter := gzip.NewWriter(compressedFile)
_, err = io.Copy(compressedWriter, uncompressedFile)
require.NoError(t, err)
require.NoError(t, compressedWriter.Close())
require.NoError(t, uncompressedFile.Close())
require.NoError(t, compressedFile.Close())
require.NoError(t, os.Remove(filepath))
}
func DecompressFile(t *testing.T, src, dest string) {
// open compressed file from storage
compressedFile, err := os.Open(src)
require.NoError(t, err)
// get a compressed reader
compressedReader, err := gzip.NewReader(compressedFile)
require.NoError(t, err)
decompressedFile, err := os.Create(dest)
require.NoError(t, err)
// do the decompression
_, err = io.Copy(decompressedFile, compressedReader)
require.NoError(t, err)
// close the references
require.NoError(t, compressedFile.Close())
require.NoError(t, decompressedFile.Close())
}