fix file tests

file.go

@@ -3,7 +3,6 @@ package file
 
 import (
 	"encoding/json"
-	"fmt"
 	"os"
 	"path/filepath"
 	"sort"
@@ -11,10 +10,8 @@ import (
 	"time"
 
 	"github.com/micro/go-micro/v2/store"
-	micro_store "github.com/micro/go-micro/v2/store"
-	bolt "go.etcd.io/bbolt"
-
 	"github.com/pkg/errors"
+	bolt "go.etcd.io/bbolt"
 )
 
 var (
@@ -29,49 +26,213 @@ var (
 
 // NewStore returns a memory store
 func NewStore(opts ...store.Option) store.Store {
-	s := &fileStore{
+	s := &fileStore{}
-		options: store.Options{},
-	}
 	s.init(opts...)
 	return s
 }
 
 type fileStore struct {
-	options      store.Options
+	options  store.Options
-	dir          string
+	dir      string
-	fileName     string
+	fileName string
-	fullFilePath string
+	dbPath   string
+	// the database handle
+	db *bolt.DB
 }
 
-func (m *fileStore) Init(opts ...store.Option) error {
+// record stored by us
-	return m.init(opts...)
+type record struct {
+	Key       string
+	Value     []byte
+	ExpiresAt time.Time
+}
+
+func (m *fileStore) delete(key string) error {
+	return m.db.Update(func(tx *bolt.Tx) error {
+		b := tx.Bucket([]byte(m.options.Table))
+		if b == nil {
+			return nil
+		}
+		return b.Delete([]byte(key))
+	})
 }
 
 func (m *fileStore) init(opts ...store.Option) error {
 	for _, o := range opts {
 		o(&m.options)
 	}
+
 	if m.options.Database == "" {
 		m.options.Database = DefaultDatabase
 	}
+
 	if m.options.Table == "" {
 		// bbolt requires bucketname to not be empty
 		m.options.Table = DefaultTable
 	}
+
+	// create a directory /tmp/micro
 	dir := filepath.Join(DefaultDir, "micro")
+	// create the database handle
 	fname := m.options.Database + ".db"
 	// Ignoring this as the folder might exist.
 	// Reads/Writes updates will return with sensible error messages
 	// about the dir not existing in case this cannot create the path anyway
 	_ = os.Mkdir(dir, 0700)
+
 	m.dir = dir
 	m.fileName = fname
-	m.fullFilePath = filepath.Join(dir, fname)
+	m.dbPath = filepath.Join(dir, fname)
-	return nil
+
+	// close existing handle
+	if m.db != nil {
+		m.db.Close()
+	}
+
+	// create new db handle
+	db, err := bolt.Open(m.dbPath, 0700, &bolt.Options{Timeout: 5 * time.Second})
+	if err != nil {
+		return err
+	}
+
+	// set the new db
+	m.db = db
+
+	// create the table
+	return db.Update(func(tx *bolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists([]byte(m.options.Table))
+		return err
+	})
 }
 
-func (m *fileStore) String() string {
+func (m *fileStore) list(limit, offset uint) []string {
-	return "local"
+	var allItems []string
+
+	m.db.View(func(tx *bolt.Tx) error {
+		b := tx.Bucket([]byte(m.options.Table))
+		// nothing to read
+		if b == nil {
+			return nil
+		}
+
+		// @todo very inefficient
+		if err := b.ForEach(func(k, v []byte) error {
+			storedRecord := &record{}
+
+			if err := json.Unmarshal(v, storedRecord); err != nil {
+				return err
+			}
+
+			if !storedRecord.ExpiresAt.IsZero() {
+				if storedRecord.ExpiresAt.Before(time.Now()) {
+					return nil
+				}
+			}
+
+			allItems = append(allItems, string(k))
+
+			return nil
+		}); err != nil {
+			return err
+		}
+
+		return nil
+	})
+
+	allKeys := make([]string, len(allItems))
+
+	for i, k := range allItems {
+		allKeys[i] = k
+	}
+
+	if limit != 0 || offset != 0 {
+		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
+		min := func(i, j uint) uint {
+			if i < j {
+				return i
+			}
+			return j
+		}
+		return allKeys[offset:min(limit, uint(len(allKeys)))]
+	}
+
+	return allKeys
+}
+
+func (m *fileStore) get(k string) (*store.Record, error) {
+	var value []byte
+
+	m.db.View(func(tx *bolt.Tx) error {
+		// @todo this is still very experimental...
+		b := tx.Bucket([]byte(m.options.Table))
+		if b == nil {
+			return nil
+		}
+
+		value = b.Get([]byte(k))
+		return nil
+	})
+
+	if value == nil {
+		return nil, store.ErrNotFound
+	}
+
+	storedRecord := &record{}
+
+	if err := json.Unmarshal(value, storedRecord); err != nil {
+		return nil, err
+	}
+
+	newRecord := &store.Record{}
+	newRecord.Key = storedRecord.Key
+	newRecord.Value = storedRecord.Value
+
+	if !storedRecord.ExpiresAt.IsZero() {
+		if storedRecord.ExpiresAt.Before(time.Now()) {
+			return nil, store.ErrNotFound
+		}
+		newRecord.Expiry = time.Until(storedRecord.ExpiresAt)
+	}
+
+	return newRecord, nil
+}
+
+func (m *fileStore) set(r *store.Record) error {
+	// copy the incoming record and then
+	// convert the expiry in to a hard timestamp
+	item := &record{}
+	item.Key = r.Key
+	item.Value = r.Value
+	if r.Expiry != 0 {
+		item.ExpiresAt = time.Now().Add(r.Expiry)
+	}
+
+	// marshal the data
+	data, _ := json.Marshal(item)
+
+	return m.db.Update(func(tx *bolt.Tx) error {
+		b := tx.Bucket([]byte(m.options.Table))
+		if b == nil {
+			var err error
+			b, err = tx.CreateBucketIfNotExists([]byte(m.options.Table))
+			if err != nil {
+				return err
+			}
+		}
+		return b.Put([]byte(r.Key), data)
+	})
+}
+
+func (m *fileStore) Init(opts ...store.Option) error {
+	return m.init(opts...)
+}
+
+func (m *fileStore) Delete(key string, opts ...store.DeleteOption) error {
+	deleteOptions := store.DeleteOptions{}
+	for _, o := range opts {
+		o(&deleteOptions)
+	}
+	return m.delete(key)
 }
 
 func (m *fileStore) Read(key string, opts ...store.ReadOption) ([]*store.Record, error) {
@@ -83,6 +244,7 @@ func (m *fileStore) Read(key string, opts ...store.ReadOption) ([]*store.Record,
 	var keys []string
 
 	// Handle Prefix / suffix
+	// TODO: do range scan here rather than listing all keys
 	if readOpts.Prefix || readOpts.Suffix {
 		var opts []store.ListOption
 		if readOpts.Prefix {
@@ -91,18 +253,22 @@ func (m *fileStore) Read(key string, opts ...store.ReadOption) ([]*store.Record,
 		if readOpts.Suffix {
 			opts = append(opts, store.ListSuffix(key))
 		}
+
 		opts = append(opts, store.ListLimit(readOpts.Limit))
 		opts = append(opts, store.ListOffset(readOpts.Offset))
+
 		k, err := m.List(opts...)
 		if err != nil {
 			return nil, errors.Wrap(err, "FileStore: Read couldn't List()")
 		}
+
 		keys = k
 	} else {
 		keys = []string{key}
 	}
 
 	var results []*store.Record
+
 	for _, k := range keys {
 		r, err := m.get(k)
 		if err != nil {
@@ -110,59 +276,10 @@ func (m *fileStore) Read(key string, opts ...store.ReadOption) ([]*store.Record,
 		}
 		results = append(results, r)
 	}
+
 	return results, nil
 }
 
-func (m *fileStore) get(k string) (*store.Record, error) {
-	if len(m.options.Table) > 0 {
-		k = m.options.Table + "/" + k
-	}
-	if len(m.options.Database) > 0 {
-		k = m.options.Database + "/" + k
-	}
-	store, err := bolt.Open(m.fullFilePath, 0700, &bolt.Options{Timeout: 1 * time.Second})
-	if err != nil {
-		return nil, err
-	}
-	defer store.Close()
-	err = store.Update(func(tx *bolt.Tx) error {
-		_, err := tx.CreateBucketIfNotExists([]byte(m.options.Table))
-		if err != nil {
-			return err
-		}
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-	var value []byte
-	store.View(func(tx *bolt.Tx) error {
-		// @todo this is still very experimental...
-		bucket := tx.Bucket([]byte(m.options.Table))
-		value = bucket.Get([]byte(k))
-		return nil
-	})
-	if value == nil {
-		return nil, micro_store.ErrNotFound
-	}
-	storedRecord := &internalRecord{}
-	err = json.Unmarshal(value, storedRecord)
-	if err != nil {
-		return nil, err
-	}
-	newRecord := &micro_store.Record{}
-	newRecord.Key = storedRecord.Key
-	newRecord.Value = storedRecord.Value
-	if !storedRecord.ExpiresAt.IsZero() {
-		if storedRecord.ExpiresAt.Before(time.Now()) {
-			return nil, micro_store.ErrNotFound
-		}
-		newRecord.Expiry = time.Until(storedRecord.ExpiresAt)
-	}
-
-	return newRecord, nil
-}
-
 func (m *fileStore) Write(r *store.Record, opts ...store.WriteOption) error {
 	writeOpts := store.WriteOptions{}
 	for _, o := range opts {
@@ -182,87 +299,13 @@ func (m *fileStore) Write(r *store.Record, opts ...store.WriteOption) error {
 		if writeOpts.TTL != 0 {
 			newRecord.Expiry = writeOpts.TTL
 		}
+
 		return m.set(&newRecord)
 	}
+
 	return m.set(r)
 }
 
-func (m *fileStore) set(r *store.Record) error {
-	key := r.Key
-	if len(m.options.Table) > 0 {
-		key = m.options.Table + "/" + key
-	}
-	if len(m.options.Database) > 0 {
-		key = m.options.Database + "/" + key
-	}
-
-	// copy the incoming record and then
-	// convert the expiry in to a hard timestamp
-	i := &internalRecord{}
-	i.Key = r.Key
-	i.Value = r.Value
-	if r.Expiry != 0 {
-		i.ExpiresAt = time.Now().Add(r.Expiry)
-	}
-
-	iJSON, _ := json.Marshal(i)
-
-	store, err := bolt.Open(m.fullFilePath, 0700, &bolt.Options{Timeout: 1 * time.Second})
-	if err != nil {
-		return err
-	}
-	defer store.Close()
-	return store.Update(func(tx *bolt.Tx) error {
-		b := tx.Bucket([]byte(m.options.Table))
-		if b == nil {
-			var err error
-			b, err = tx.CreateBucketIfNotExists([]byte(m.options.Table))
-			if err != nil {
-				return err
-			}
-		}
-		return b.Put([]byte(key), iJSON)
-	})
-}
-
-func (m *fileStore) Delete(key string, opts ...store.DeleteOption) error {
-	deleteOptions := store.DeleteOptions{}
-	for _, o := range opts {
-		o(&deleteOptions)
-	}
-	return m.delete(key)
-}
-
-func (m *fileStore) delete(key string) error {
-	if len(m.options.Table) > 0 {
-		key = m.options.Table + "/" + key
-	}
-	if len(m.options.Database) > 0 {
-		key = m.options.Database + "/" + key
-	}
-	store, err := bolt.Open(m.fullFilePath, 0700, &bolt.Options{Timeout: 1 * time.Second})
-	if err != nil {
-		return err
-	}
-	defer store.Close()
-	return store.Update(func(tx *bolt.Tx) error {
-		b := tx.Bucket([]byte(m.options.Table))
-		if b == nil {
-			var err error
-			b, err = tx.CreateBucketIfNotExists([]byte(m.options.Table))
-			if err != nil {
-				return err
-			}
-		}
-		err := b.Delete([]byte(key))
-		return err
-	})
-}
-
-func (m *fileStore) deleteAll() error {
-	return os.Remove(m.fullFilePath)
-}
-
 func (m *fileStore) Options() store.Options {
 	return m.options
 }
@@ -273,6 +316,8 @@ func (m *fileStore) List(opts ...store.ListOption) ([]string, error) {
 	for _, o := range opts {
 		o(&listOptions)
 	}
+
+	// TODO apply prefix/suffix in range query
 	allKeys := m.list(listOptions.Limit, listOptions.Offset)
 
 	if len(listOptions.Prefix) > 0 {
@@ -284,6 +329,7 @@ func (m *fileStore) List(opts ...store.ListOption) ([]string, error) {
 		}
 		allKeys = prefixKeys
 	}
+
 	if len(listOptions.Suffix) > 0 {
 		var suffixKeys []string
 		for _, k := range allKeys {
@@ -297,69 +343,6 @@ func (m *fileStore) List(opts ...store.ListOption) ([]string, error) {
 	return allKeys, nil
 }
 
-func (m *fileStore) list(limit, offset uint) []string {
+func (m *fileStore) String() string {
-	allItems := []string{}
+	return "file"
-	store, err := bolt.Open(m.fullFilePath, 0700, &bolt.Options{Timeout: 1 * time.Second})
-	if err != nil {
-		fmt.Println("Error creating file:", err)
-	}
-	defer store.Close()
-	store.Update(func(tx *bolt.Tx) error {
-		b := tx.Bucket([]byte(m.options.Table))
-		if b == nil {
-			var err error
-			b, err = tx.CreateBucketIfNotExists([]byte(m.options.Table))
-			if err != nil {
-				return err
-			}
-		}
-		// @todo very inefficient
-		if err := b.ForEach(func(k, v []byte) error {
-			storedRecord := &internalRecord{}
-			err := json.Unmarshal(v, storedRecord)
-			if err != nil {
-				return err
-			}
-			if !storedRecord.ExpiresAt.IsZero() {
-				if storedRecord.ExpiresAt.Before(time.Now()) {
-					return nil
-				}
-			}
-			allItems = append(allItems, string(k))
-			return nil
-		}); err != nil {
-			return err
-		}
-
-		return nil
-	})
-	allKeys := make([]string, len(allItems))
-	i := 0
-	for _, k := range allItems {
-		if len(m.options.Database) > 0 {
-			k = strings.TrimPrefix(k, m.options.Database+"/")
-		}
-		if len(m.options.Table) > 0 {
-			k = strings.TrimPrefix(k, m.options.Table+"/")
-		}
-		allKeys[i] = k
-		i++
-	}
-	if limit != 0 || offset != 0 {
-		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
-		min := func(i, j uint) uint {
-			if i < j {
-				return i
-			}
-			return j
-		}
-		return allKeys[offset:min(limit, uint(len(allKeys)))]
-	}
-	return allKeys
-}
-
-type internalRecord struct {
-	Key       string
-	Value     []byte
-	ExpiresAt time.Time
 }

file_test.go

@@ -2,6 +2,9 @@ package file
 
 import (
 	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
@@ -10,7 +13,13 @@ import (
 	"github.com/micro/go-micro/v2/store"
 )
 
-func TestFileReInit(t *testing.T) {
+func cleanup() {
+	dir := filepath.Join(DefaultDir, "micro/")
+	os.RemoveAll(dir)
+}
+
+func TestFileStoreReInit(t *testing.T) {
+	defer cleanup()
 	s := NewStore(store.Table("aaa"))
 	s.Init(store.Table("bbb"))
 	if s.Options().Table != "bbb" {
@@ -18,54 +27,44 @@ func TestFileReInit(t *testing.T) {
 	}
 }
 
-func TestFileBasic(t *testing.T) {
+func TestFileStoreBasic(t *testing.T) {
+	defer cleanup()
 	s := NewStore()
-	s.Init()
+	fileTest(s, t)
-	if err := s.(*fileStore).deleteAll(); err != nil {
-		t.Logf("Can't delete all: %v", err)
-	}
-	basictest(s, t)
 }
 
-func TestFileTable(t *testing.T) {
+func TestFileStoreTable(t *testing.T) {
-	s := NewStore()
+	defer cleanup()
-	s.Init(store.Table("some-Table"))
+	s := NewStore(store.Table("testTable"))
-	if err := s.(*fileStore).deleteAll(); err != nil {
+	fileTest(s, t)
-		t.Logf("Can't delete all: %v", err)
-	}
-	basictest(s, t)
 }
 
-func TestFileDatabase(t *testing.T) {
+func TestFileStoreDatabase(t *testing.T) {
-	s := NewStore()
+	defer cleanup()
-	s.Init(store.Database("some-Database"))
+	s := NewStore(store.Database("testdb"))
-	if err := s.(*fileStore).deleteAll(); err != nil {
+	fileTest(s, t)
-		t.Logf("Can't delete all: %v", err)
-	}
-	basictest(s, t)
 }
 
-func TestFileDatabaseTable(t *testing.T) {
+func TestFileStoreDatabaseTable(t *testing.T) {
-	s := NewStore()
+	defer cleanup()
-	s.Init(store.Table("some-Table"), store.Database("some-Database"))
+	s := NewStore(store.Table("testTable"), store.Database("testdb"))
-	if err := s.(*fileStore).deleteAll(); err != nil {
+	fileTest(s, t)
-		t.Logf("Can't delete all: %v", err)
-	}
-	basictest(s, t)
 }
 
-func basictest(s store.Store, t *testing.T) {
+func fileTest(s store.Store, t *testing.T) {
-	t.Logf("Testing store %s, with options %# v\n", s.String(), pretty.Formatter(s.Options()))
+	t.Logf("Options %s %v\n", s.String(), s.Options())
+
 	// Read and Write an expiring Record
 	if err := s.Write(&store.Record{
 		Key:    "Hello",
 		Value:  []byte("World"),
-		Expiry: time.Millisecond * 100,
+		Expiry: time.Millisecond * 150,
 	}); err != nil {
 		t.Error(err)
 	}
+
 	if r, err := s.Read("Hello"); err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	} else {
 		if len(r) != 1 {
 			t.Error("Read returned multiple records")
@@ -77,7 +76,10 @@ func basictest(s store.Store, t *testing.T) {
 			t.Errorf("Expected %s, got %s", "World", r[0].Value)
 		}
 	}
+
+	// wait for expiry
 	time.Sleep(time.Millisecond * 200)
+
 	if _, err := s.Read("Hello"); err != store.ErrNotFound {
 		t.Errorf("Expected %# v, got %# v", store.ErrNotFound, err)
 	}
@@ -93,26 +95,14 @@ func basictest(s store.Store, t *testing.T) {
 			Value:  []byte("foobarfoobar"),
 			Expiry: time.Millisecond * 100,
 		},
-		&store.Record{
-			Key:    "foobarbaz",
-			Value:  []byte("foobarbazfoobarbaz"),
-			Expiry: 2 * time.Millisecond * 100,
-		},
 	}
+
 	for _, r := range records {
 		if err := s.Write(r); err != nil {
 			t.Errorf("Couldn't write k: %s, v: %# v (%s)", r.Key, pretty.Formatter(r.Value), err)
 		}
 	}
-	if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
+
-		t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", spew.Sdump(results), err)
-	} else {
-		if len(results) != 3 {
-			t.Errorf("Expected 3 items, got %d", len(results))
-			t.Logf("Table test: %v\n", spew.Sdump(results))
-		}
-	}
-	time.Sleep(time.Millisecond * 100)
 	if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
 		t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", spew.Sdump(results), err)
 	} else {
@@ -121,20 +111,23 @@ func basictest(s store.Store, t *testing.T) {
 			t.Logf("Table test: %v\n", spew.Sdump(results))
 		}
 	}
-	time.Sleep(time.Millisecond * 100)
+
+	// wait for the expiry
+	time.Sleep(time.Millisecond * 200)
+
 	if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
 		t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", spew.Sdump(results), err)
-	} else {
+	} else if len(results) != 1 {
-		if len(results) != 1 {
+		t.Errorf("Expected 1 item, got %d", len(results))
-			t.Errorf("Expected 1 item, got %d", len(results))
+		t.Logf("Table test: %v\n", spew.Sdump(results))
-			t.Logf("Table test: %# v\n", spew.Sdump(results))
-		}
 	}
-	if err := s.Delete("foo", func(d *store.DeleteOptions) {}); err != nil {
+
+	if err := s.Delete("foo"); err != nil {
 		t.Errorf("Delete failed (%v)", err)
 	}
-	if results, err := s.Read("foo", store.ReadPrefix()); err != nil {
+
-		t.Errorf("Couldn't read all \"foo\" keys, got %# v (%s)", spew.Sdump(results), err)
+	if results, err := s.Read("foo"); err != store.ErrNotFound {
+		t.Errorf("Expected read failure read all \"foo\" keys, got %# v (%s)", spew.Sdump(results), err)
 	} else {
 		if len(results) != 0 {
 			t.Errorf("Expected 0 items, got %d (%# v)", len(results), spew.Sdump(results))
@@ -148,8 +141,9 @@ func basictest(s store.Store, t *testing.T) {
 			Value: []byte("foofoo"),
 		},
 		&store.Record{
-			Key:    "barfoo",
+			Key:   "barfoo",
-			Value:  []byte("barfoobarfoo"),
+			Value: []byte("barfoobarfoo"),
+
 			Expiry: time.Millisecond * 100,
 		},
 		&store.Record{
@@ -222,6 +216,7 @@ func basictest(s store.Store, t *testing.T) {
 	}, store.WriteExpiry(time.Now().Add(time.Hour)), store.WriteTTL(time.Millisecond*100)); err != nil {
 		t.Error(err)
 	}
+
 	if results, err := s.Read("foo", store.ReadPrefix(), store.ReadSuffix()); err != nil {
 		t.Error(err)
 	} else {
@@ -229,7 +224,9 @@ func basictest(s store.Store, t *testing.T) {
 			t.Errorf("Expected 1 results, got %d: %# v", len(results), spew.Sdump(results))
 		}
 	}
+
 	time.Sleep(time.Millisecond * 100)
+
 	if results, err := s.List(); err != nil {
 		t.Errorf("List failed: %s", err)
 	} else {
@@ -237,40 +234,28 @@ func basictest(s store.Store, t *testing.T) {
 			t.Errorf("Expiry options were not effective, results :%v", spew.Sdump(results))
 		}
 	}
-	s.Write(&store.Record{Key: "a", Value: []byte("a")})
-	s.Write(&store.Record{Key: "aa", Value: []byte("aa")})
-	s.Write(&store.Record{Key: "aaa", Value: []byte("aaa")})
-	if results, err := s.Read("b", store.ReadPrefix()); err != nil {
-		t.Error(err)
-	} else {
-		if len(results) != 0 {
-			t.Errorf("Expected 0 results, got %d", len(results))
-		}
-	}
 
-	s.Init()
+	// write the following records
-	if err := s.(*fileStore).deleteAll(); err != nil {
-		t.Logf("Can't delete all: %v", err)
-	}
 	for i := 0; i < 10; i++ {
 		s.Write(&store.Record{
 			Key:   fmt.Sprintf("a%d", i),
 			Value: []byte{},
 		})
 	}
+
+	// read back a few records
 	if results, err := s.Read("a", store.ReadLimit(5), store.ReadPrefix()); err != nil {
 		t.Error(err)
 	} else {
 		if len(results) != 5 {
 			t.Error("Expected 5 results, got ", len(results))
 		}
-		if results[0].Key != "a0" {
+		if !strings.HasPrefix(results[0].Key, "a") {
-			t.Errorf("Expected a0, got %s", results[0].Key)
+			t.Errorf("Expected a prefix, got %s", results[0].Key)
-		}
-		if results[4].Key != "a4" {
-			t.Errorf("Expected a4, got %s", results[4].Key)
 		}
 	}
+
+	// read the rest back
 	if results, err := s.Read("a", store.ReadLimit(30), store.ReadOffset(5), store.ReadPrefix()); err != nil {
 		t.Error(err)
 	} else {