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feat: add graphql

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This commit is contained in:
Jon Lundy
2022-08-07 11:55:49 -06:00
parent f436393965
commit 82f23ae323
20 changed files with 5234 additions and 170 deletions
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58
pkg/es/driver/disk-store/disk-store.go
View File

@@ -53,11 +53,9 @@ func (es *diskStore) Save(ctx context.Context, agg event.Aggregate) (uint64, err
}
var last uint64
if last, err = l.w.LastIndex(); err != nil {
if last, err = l.LastIndex(); err != nil {
return 0, err
}
if agg.StreamVersion() != last {
return 0, fmt.Errorf("current version wrong %d != %d", agg.StreamVersion(), last)
}
@@ -75,7 +73,7 @@ func (es *diskStore) Save(ctx context.Context, agg event.Aggregate) (uint64, err
batch.Write(e.EventMeta().Position, b)
}
err = l.w.WriteBatch(batch)
err = l.WriteBatch(batch)
if err != nil {
return 0, err
}
@@ -92,8 +90,7 @@ func (es *diskStore) Append(ctx context.Context, streamID string, events event.E
}
var last uint64
if last, err = l.w.LastIndex(); err != nil {
if last, err = l.LastIndex(); err != nil {
return 0, err
}
@@ -111,7 +108,7 @@ func (es *diskStore) Append(ctx context.Context, streamID string, events event.E
batch.Write(pos, b)
}
err = l.w.WriteBatch(batch)
err = l.WriteBatch(batch)
if err != nil {
return 0, err
}
@@ -125,22 +122,20 @@ func (es *diskStore) Load(ctx context.Context, agg event.Aggregate) error {
var i, first, last uint64
if first, err = l.w.FirstIndex(); err != nil {
if first, err = l.FirstIndex(); err != nil {
return err
}
if last, err = l.w.LastIndex(); err != nil {
if last, err = l.LastIndex(); err != nil {
return err
}
if first == 0 || last == 0 {
return nil
}
var b []byte
events := make([]event.Event, last-i)
for i = 0; first+i <= last; i++ {
b, err = l.w.Read(first + i)
b, err = l.Read(first + i)
if err != nil {
return err
}
@@ -149,7 +144,6 @@ func (es *diskStore) Load(ctx context.Context, agg event.Aggregate) error {
return err
}
}
event.Append(agg, events...)
return nil
@@ -161,14 +155,12 @@ func (es *diskStore) Read(ctx context.Context, streamID string, pos, count int64
}
var first, last, start uint64
if first, err = l.w.FirstIndex(); err != nil {
if first, err = l.FirstIndex(); err != nil {
return nil, err
}
if last, err = l.w.LastIndex(); err != nil {
if last, err = l.LastIndex(); err != nil {
return nil, err
}
if first == 0 || last == 0 {
return nil, nil
}
@@ -190,7 +182,7 @@ func (es *diskStore) Read(ctx context.Context, streamID string, pos, count int64
for i := range events {
var b []byte
b, err = l.w.Read(start)
b, err = l.Read(start)
if err != nil {
return events, err
}
@@ -209,25 +201,25 @@ func (es *diskStore) Read(ctx context.Context, streamID string, pos, count int64
break
}
}
event.SetStreamID(streamID, events...)
return events, nil
}
func (es *diskStore) readLog(name string) (*eventLog, error) {
return newEventLog(name, filepath.Join(es.path, name))
func (es *diskStore) FirstIndex(ctx context.Context, streamID string) (uint64, error) {
l, err := es.readLog(streamID)
if err != nil {
return 0, err
}
return l.FirstIndex()
}
func (es *diskStore) LastIndex(ctx context.Context, streamID string) (uint64, error) {
l, err := es.readLog(streamID)
if err != nil {
return 0, err
}
return l.LastIndex()
}
type eventLog struct {
name string
path string
w *wal.Log
}
func newEventLog(name, path string) (*eventLog, error) {
var err error
el := &eventLog{name: name, path: path}
el.w, err = wal.Open(path, wal.DefaultOptions)
return el, err
func (es *diskStore) readLog(name string) (*wal.Log, error) {
return wal.Open(filepath.Join(es.path, name), wal.DefaultOptions)
}

2
pkg/es/driver/driver.go
View File

@@ -15,4 +15,6 @@ type EventStore interface {
Load(ctx context.Context, agg event.Aggregate) error
Read(ctx context.Context, streamID string, pos, count int64) (event.Events, error)
Append(ctx context.Context, streamID string, events event.Events) (uint64, error)
FirstIndex(ctx context.Context, streamID string) (uint64, error)
LastIndex(ctx context.Context, streamID string) (uint64, error)
}

16
pkg/es/driver/mem-store/mem-store.go
View File

@@ -140,3 +140,19 @@ func (m *memstore) Save(ctx context.Context, agg event.Aggregate) (uint64, error
return uint64(len(events)), nil
}
func (m *memstore) FirstIndex(ctx context.Context, streamID string) (uint64, error) {
stream, err := m.state.Copy(ctx)
if err != nil {
return 0, err
}
return stream.streams[streamID].First().EventMeta().Position, nil
}
func (m *memstore) LastIndex(ctx context.Context, streamID string) (uint64, error) {
stream, err := m.state.Copy(ctx)
if err != nil {
return 0, err
}
return stream.streams[streamID].Last().EventMeta().Position, nil
}