feat(gl): expose ledger application and grpc operations

domain/ledger/journal.go

@@ -80,6 +80,7 @@ type Journal struct {
 	Entries             []Entry
 	ReversalOfJournalID string
 	OccurredAt          time.Time
+	RecordedAt          time.Time
 	CorrelationID       string
 	ActorID             string
 	Blockchain          BlockchainReference
@@ -87,6 +88,20 @@ type Journal struct {
 	PayloadHash         string
 }
 
+type AppendResult struct {
+	JournalID     string
+	AlreadyExists bool
+}
+
+type JournalFilter struct {
+	Account      *AccountReference
+	AssetID      *int64
+	RecordedFrom *time.Time
+	RecordedTo   *time.Time
+	Limit        int
+	Offset       int
+}
+
 func (j Journal) Validate() error {
 	if j.ID == "" || j.SourceService == "" || j.IdempotencyKey == "" || j.SourceTransactionID == "" || j.EffectKind == "" {
 		return fmt.Errorf("journal identity fields are required")