feat(gl): expose ledger application and grpc operations

2026-08-14 19:11:29 +03:30
parent 0b3eaa0c3d
commit 76905ab451
17 changed files with 1724 additions and 16 deletions
@@ -0,0 +1,106 @@
+package postgres
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"gl/domain/ledger"
+
+	"github.com/jackc/pgx/v5"
+)
+
+func (r *JournalRepository) AppendEvent(ctx context.Context, event ledger.TransactionEvent) (ledger.TransactionEvent, bool, error) {
+	if err := event.Validate(); err != nil {
+		return ledger.TransactionEvent{}, false, fmt.Errorf("validate transaction event: %w", err)
+	}
+	metadataValues := event.Metadata
+	if metadataValues == nil {
+		metadataValues = map[string]string{}
+	}
+	metadata, err := json.Marshal(metadataValues)
+	if err != nil {
+		return ledger.TransactionEvent{}, false, fmt.Errorf("encode event metadata: %w", err)
+	}
+
+	err = r.database.QueryRow(ctx, insertEventSQL,
+		event.ID,
+		event.SourceService,
+		event.IdempotencyKey,
+		event.SourceTransactionID,
+		event.TrackingCode,
+		event.EventVersion,
+		event.State,
+		event.ErrorCode,
+		event.ErrorMessage,
+		event.OccurredAt,
+		event.CorrelationID,
+		event.ActorID,
+		event.Blockchain.Network,
+		event.Blockchain.TransactionHash,
+		event.Blockchain.LedgerSequence,
+		metadata,
+		event.PayloadHash,
+	).Scan(&event.RecordedAt)
+	if !errors.Is(err, pgx.ErrNoRows) {
+		if err != nil {
+			return ledger.TransactionEvent{}, false, fmt.Errorf("insert transaction event: %w", err)
+		}
+		return event, false, nil
+	}
+
+	var stored ledger.TransactionEvent
+	var storedMetadata []byte
+	err = r.database.QueryRow(ctx, selectEventByIdempotencySQL, event.IdempotencyKey).Scan(
+		&stored.ID,
+		&stored.SourceService,
+		&stored.IdempotencyKey,
+		&stored.SourceTransactionID,
+		&stored.TrackingCode,
+		&stored.EventVersion,
+		&stored.State,
+		&stored.ErrorCode,
+		&stored.ErrorMessage,
+		&stored.OccurredAt,
+		&stored.RecordedAt,
+		&stored.CorrelationID,
+		&stored.ActorID,
+		&stored.Blockchain.Network,
+		&stored.Blockchain.TransactionHash,
+		&stored.Blockchain.LedgerSequence,
+		&storedMetadata,
+		&stored.PayloadHash,
+	)
+	if err != nil {
+		return ledger.TransactionEvent{}, false, fmt.Errorf("read idempotent transaction event: %w", err)
+	}
+	if stored.PayloadHash != event.PayloadHash {
+		return ledger.TransactionEvent{}, false, ErrIdempotencyConflict
+	}
+	if err := json.Unmarshal(storedMetadata, &stored.Metadata); err != nil {
+		return ledger.TransactionEvent{}, false, fmt.Errorf("decode event metadata: %w", err)
+	}
+	return stored, true, nil
+}
+
+const insertEventSQL = `
+INSERT INTO transaction_events (
+    id, source_service, idempotency_key, source_transaction_id, tracking_code,
+    event_version, state, error_code, error_message, occurred_at, correlation_id,
+    actor_id, blockchain_network, blockchain_transaction_hash,
+    blockchain_ledger_sequence, metadata, payload_hash
+) VALUES (
+    $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17
+)
+ON CONFLICT (idempotency_key) DO NOTHING
+RETURNING recorded_at`
+
+const selectEventByIdempotencySQL = `
+SELECT id, source_service, idempotency_key, source_transaction_id,
+       tracking_code, event_version, state, error_code, error_message,
+       occurred_at, recorded_at, correlation_id, actor_id, blockchain_network,
+       blockchain_transaction_hash, blockchain_ledger_sequence, metadata,
+       payload_hash
+FROM transaction_events
+WHERE idempotency_key = $1`