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Diffstat (limited to 'ethdb/memorydb/memorydb.go')
-rw-r--r--ethdb/memorydb/memorydb.go70
1 files changed, 35 insertions, 35 deletions
diff --git a/ethdb/memorydb/memorydb.go b/ethdb/memorydb/memorydb.go
index 9c6bd48be..cc2490ba2 100644
--- a/ethdb/memorydb/memorydb.go
+++ b/ethdb/memorydb/memorydb.go
@@ -37,33 +37,33 @@ var (
errMemorydbNotFound = errors.New("not found")
)
-// MemoryDatabase is an ephemeral key-value store. Apart from basic data storage
+// Database is an ephemeral key-value store. Apart from basic data storage
// functionality it also supports batch writes and iterating over the keyspace in
// binary-alphabetical order.
-type MemoryDatabase struct {
+type Database struct {
db map[string][]byte
lock sync.RWMutex
}
// New returns a wrapped map with all the required database interface methods
// implemented.
-func New() *MemoryDatabase {
- return &MemoryDatabase{
+func New() *Database {
+ return &Database{
db: make(map[string][]byte),
}
}
// NewWithCap returns a wrapped map pre-allocated to the provided capcity with
// all the required database interface methods implemented.
-func NewWithCap(size int) *MemoryDatabase {
- return &MemoryDatabase{
+func NewWithCap(size int) *Database {
+ return &Database{
db: make(map[string][]byte, size),
}
}
// Close deallocates the internal map and ensures any consecutive data access op
// failes with an error.
-func (db *MemoryDatabase) Close() error {
+func (db *Database) Close() error {
db.lock.Lock()
defer db.lock.Unlock()
@@ -72,7 +72,7 @@ func (db *MemoryDatabase) Close() error {
}
// Has retrieves if a key is present in the key-value store.
-func (db *MemoryDatabase) Has(key []byte) (bool, error) {
+func (db *Database) Has(key []byte) (bool, error) {
db.lock.RLock()
defer db.lock.RUnlock()
@@ -84,7 +84,7 @@ func (db *MemoryDatabase) Has(key []byte) (bool, error) {
}
// Get retrieves the given key if it's present in the key-value store.
-func (db *MemoryDatabase) Get(key []byte) ([]byte, error) {
+func (db *Database) Get(key []byte) ([]byte, error) {
db.lock.RLock()
defer db.lock.RUnlock()
@@ -98,7 +98,7 @@ func (db *MemoryDatabase) Get(key []byte) ([]byte, error) {
}
// Put inserts the given value into the key-value store.
-func (db *MemoryDatabase) Put(key []byte, value []byte) error {
+func (db *Database) Put(key []byte, value []byte) error {
db.lock.Lock()
defer db.lock.Unlock()
@@ -110,7 +110,7 @@ func (db *MemoryDatabase) Put(key []byte, value []byte) error {
}
// Delete removes the key from the key-value store.
-func (db *MemoryDatabase) Delete(key []byte) error {
+func (db *Database) Delete(key []byte) error {
db.lock.Lock()
defer db.lock.Unlock()
@@ -123,21 +123,21 @@ func (db *MemoryDatabase) Delete(key []byte) error {
// NewBatch creates a write-only key-value store that buffers changes to its host
// database until a final write is called.
-func (db *MemoryDatabase) NewBatch() ethdb.Batch {
- return &memoryBatch{
+func (db *Database) NewBatch() ethdb.Batch {
+ return &batch{
db: db,
}
}
// NewIterator creates a binary-alphabetical iterator over the entire keyspace
// contained within the memory database.
-func (db *MemoryDatabase) NewIterator() ethdb.Iterator {
+func (db *Database) NewIterator() ethdb.Iterator {
return db.NewIteratorWithPrefix(nil)
}
// NewIteratorWithPrefix creates a binary-alphabetical iterator over a subset
// of database content with a particular key prefix.
-func (db *MemoryDatabase) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
+func (db *Database) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
db.lock.RLock()
defer db.lock.RUnlock()
@@ -157,19 +157,19 @@ func (db *MemoryDatabase) NewIteratorWithPrefix(prefix []byte) ethdb.Iterator {
for _, key := range keys {
values = append(values, db.db[key])
}
- return &memoryIterator{
+ return &iterator{
keys: keys,
values: values,
}
}
// Stat returns a particular internal stat of the database.
-func (db *MemoryDatabase) Stat(property string) (string, error) {
+func (db *Database) Stat(property string) (string, error) {
return "", errors.New("unknown property")
}
// Compact is not supported on a memory database.
-func (db *MemoryDatabase) Compact(start []byte, limit []byte) error {
+func (db *Database) Compact(start []byte, limit []byte) error {
return errors.New("unsupported operation")
}
@@ -177,7 +177,7 @@ func (db *MemoryDatabase) Compact(start []byte, limit []byte) error {
//
// Note, this method is only used for testing (i.e. not public in general) and
// does not have explicit checks for closed-ness to allow simpler testing code.
-func (db *MemoryDatabase) Len() int {
+func (db *Database) Len() int {
db.lock.RLock()
defer db.lock.RUnlock()
@@ -192,35 +192,35 @@ type keyvalue struct {
delete bool
}
-// memoryBatch is a write-only memory batch that commits changes to its host
+// batch is a write-only memory batch that commits changes to its host
// database when Write is called. A batch cannot be used concurrently.
-type memoryBatch struct {
- db *MemoryDatabase
+type batch struct {
+ db *Database
writes []keyvalue
size int
}
// Put inserts the given value into the batch for later committing.
-func (b *memoryBatch) Put(key, value []byte) error {
+func (b *batch) Put(key, value []byte) error {
b.writes = append(b.writes, keyvalue{common.CopyBytes(key), common.CopyBytes(value), false})
b.size += len(value)
return nil
}
// Delete inserts the a key removal into the batch for later committing.
-func (b *memoryBatch) Delete(key []byte) error {
+func (b *batch) Delete(key []byte) error {
b.writes = append(b.writes, keyvalue{common.CopyBytes(key), nil, true})
b.size += 1
return nil
}
// ValueSize retrieves the amount of data queued up for writing.
-func (b *memoryBatch) ValueSize() int {
+func (b *batch) ValueSize() int {
return b.size
}
// Write flushes any accumulated data to the memory database.
-func (b *memoryBatch) Write() error {
+func (b *batch) Write() error {
b.db.lock.Lock()
defer b.db.lock.Unlock()
@@ -235,15 +235,15 @@ func (b *memoryBatch) Write() error {
}
// Reset resets the batch for reuse.
-func (b *memoryBatch) Reset() {
+func (b *batch) Reset() {
b.writes = b.writes[:0]
b.size = 0
}
-// memoryIterator can walk over the (potentially partial) keyspace of a memory
-// key value store. Internally it is a deep copy of the entire iterated state,
+// iterator can walk over the (potentially partial) keyspace of a memory key
+// value store. Internally it is a deep copy of the entire iterated state,
// sorted by keys.
-type memoryIterator struct {
+type iterator struct {
inited bool
keys []string
values [][]byte
@@ -251,7 +251,7 @@ type memoryIterator struct {
// Next moves the iterator to the next key/value pair. It returns whether the
// iterator is exhausted.
-func (it *memoryIterator) Next() bool {
+func (it *iterator) Next() bool {
// If the iterator was not yet initialized, do it now
if !it.inited {
it.inited = true
@@ -267,14 +267,14 @@ func (it *memoryIterator) Next() bool {
// Error returns any accumulated error. Exhausting all the key/value pairs
// is not considered to be an error. A memory iterator cannot encounter errors.
-func (it *memoryIterator) Error() error {
+func (it *iterator) Error() error {
return nil
}
// Key returns the key of the current key/value pair, or nil if done. The caller
// should not modify the contents of the returned slice, and its contents may
// change on the next call to Next.
-func (it *memoryIterator) Key() []byte {
+func (it *iterator) Key() []byte {
if len(it.keys) > 0 {
return []byte(it.keys[0])
}
@@ -284,7 +284,7 @@ func (it *memoryIterator) Key() []byte {
// Value returns the value of the current key/value pair, or nil if done. The
// caller should not modify the contents of the returned slice, and its contents
// may change on the next call to Next.
-func (it *memoryIterator) Value() []byte {
+func (it *iterator) Value() []byte {
if len(it.values) > 0 {
return it.values[0]
}
@@ -293,6 +293,6 @@ func (it *memoryIterator) Value() []byte {
// Release releases associated resources. Release should always succeed and can
// be called multiple times without causing error.
-func (it *memoryIterator) Release() {
+func (it *iterator) Release() {
it.keys, it.values = nil, nil
}