fix: add asset id index on nft_metadata table

Author: iccicci

packages/cardano-services/src/Projection/migrations/1726479765002-nft-metadata-index.ts

@@ -0,0 +1,16 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+import { NftMetadataEntity } from '@cardano-sdk/projection-typeorm';
+
+export class NftMetadataIndexMigration1726479765002 implements MigrationInterface {
+  static entity = NftMetadataEntity;
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      'CREATE INDEX "IDX_nft_metadata_user_token_asset_id" ON "nft_metadata" ("user_token_asset_id") '
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query('DROP INDEX "public"."IDX_nft_metadata_user_token_asset_id"');
+  }
+}

packages/cardano-services/src/Projection/migrations/index.ts

@@ -11,6 +11,7 @@ import { HandleDefaultMigrations1693830294136 } from './1693830294136-handle-def
 import { HandleMetadataTableMigrations1693490983715 } from './1693490983715-handle-metadata-table';
 import { HandleParentMigration1700556589063 } from './1700556589063-handle-parent';
 import { HandleTableMigration1686138943349 } from './1686138943349-handle-table';
+import { NftMetadataIndexMigration1726479765002 } from './1726479765002-nft-metadata-index';
 import { NftMetadataTableMigration1690269355640 } from './1690269355640-nft-metadata-table';
 import { OutputTableMigration1682519108367 } from './1682519108367-output-table';
 import { PoolDelistedTableMigration1695899010515 } from './1695899010515-pool-delisted-table';
@@ -55,5 +56,6 @@ export const migrations: ProjectionMigration[] = [
   PoolRewardsTableMigrations1698175956871,
   HandleParentMigration1700556589063,
   RewardsPledgeNumericMigration1715157190230,
-  GovernanceActionMigration1724168174191
+  GovernanceActionMigration1724168174191,
+  NftMetadataIndexMigration1726479765002
 ];

packages/projection-typeorm/src/entity/NftMetadata.entity.ts

@@ -1,7 +1,7 @@
 import { Asset, Cardano } from '@cardano-sdk/core';
 import { AssetEntity } from './Asset.entity';
 import { BlockEntity } from './Block.entity';
-import { Column, Entity, JoinColumn, ManyToOne, PrimaryGeneratedColumn } from 'typeorm';
+import { Column, Entity, Index, JoinColumn, ManyToOne, PrimaryGeneratedColumn } from 'typeorm';
 import { OnDeleteCascadeRelationOptions, OnDeleteSetNullRelationOptions } from './util';
 import { sanitizeNullCharacters, serializableObj } from './transformers';
 
@@ -34,6 +34,7 @@ export class NftMetadataEntity {
   parentAsset?: AssetEntity;
   @ManyToOne(() => AssetEntity, OnDeleteSetNullRelationOptions)
   userTokenAsset?: AssetEntity | null;
+  @Index()
   @Column('varchar', { nullable: true })
   userTokenAssetId?: Cardano.AssetId | null;
   @ManyToOne(() => BlockEntity, OnDeleteCascadeRelationOptions)