Feat: removed count to make queries faster

Author: LukaAvbreht

src/services/indexer-services/utxo-indexer.service.ts

@@ -108,9 +108,7 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
    * @param blockNumber
    * @returns
    */
-  public async confirmedBlockAt(
-    blockNumber: number,
-  ): Promise<ApiDBBlock> {
+  public async confirmedBlockAt(blockNumber: number): Promise<ApiDBBlock> {
     const query = this.manager
       .createQueryBuilder(this.blockTable, 'block')
       .andWhere('block.block_number = :blockNumber', { blockNumber });
@@ -124,9 +122,15 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
   /**
    * Gets a confirmed block from the indexer database in the given block number range and pagination props.
    */
-  public async listBlock({ from, to }: QueryBlock): Promise<PaginatedList<ApiDBBlock>> {
+  public async listBlock({
+    from,
+    to,
+  }: QueryBlock): Promise<PaginatedList<ApiDBBlock>> {
+    // TODO: (Luka) add pagination
     let theLimit = this.indexerServerPageLimit;
-    let query = this.manager.createQueryBuilder(this.blockTable, 'block').orderBy('block.block_number', 'ASC');
+    let query = this.manager
+      .createQueryBuilder(this.blockTable, 'block')
+      .orderBy('block.block_number', 'ASC');
     const count = await query.getCount();
     theLimit = Math.min(theLimit, count);
 
@@ -139,9 +143,11 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
     }
     if (to !== undefined) {
       if (from === undefined) {
-        query = query.andWhere('block.block_number <= :to', { to }).take(theLimit);
+        query = query
+          .andWhere('block.block_number <= :to', { to })
+          .take(theLimit);
       } else {
-        const tempTo = Math.min(to, from + theLimit - 1)
+        const tempTo = Math.min(to, from + theLimit - 1);
         theLimit = tempTo - from + 1;
         query = query.andWhere('block.block_number <= :tempTo', { tempTo });
       }
@@ -154,7 +160,7 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
       return res.toApiDBBlock();
     });
 
-    return new PaginatedList(items, count, theLimit, 0);
+    return new PaginatedList(items, theLimit, 0);
   }
 
   /**
@@ -171,7 +177,6 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
       return res.toApiDBBlock();
     }
     throw new Error('Block not found');
-
   }
 
   /**
@@ -218,23 +223,20 @@ abstract class UtxoExternalIndexerEngineService extends IIndexerEngineService {
     if (returnResponse) {
       query = this.joinTransactionQuery(query);
     }
-    const count = await query.getCount();
     const results = await query.getMany();
     const items = results.map((res) => {
       return res.toApiDBTransaction(this.chainType, returnResponse);
     });
 
-    return new PaginatedList(items, count, theLimit, theOffset);
+    return new PaginatedList(items, theLimit, theOffset);
   }
 
   /**
    * Gets the confirmed transaction from the indexer database for a given transaction id (hash).
    * @param txHash
    * @returns
    */
-  public async getTransaction(
-    txHash: string,
-  ): Promise<ApiDBTransaction> {
+  public async getTransaction(txHash: string): Promise<ApiDBTransaction> {
     const query = this.joinTransactionQuery(
       this.manager
         .createQueryBuilder(this.transactionTable, 'transaction')

src/services/indexer-services/xrp-indexer.service.ts

@@ -82,10 +82,13 @@ export class XrpExternalIndexerEngineService extends IIndexerEngineService {
 
   public async listBlock({
     from,
-    to
+    to,
   }: QueryBlock): Promise<PaginatedList<ApiDBBlock>> {
+    // TODO: (Luka) add pagination
     let theLimit = this.indexerServerPageLimit;
-    let query = this.manager.createQueryBuilder(this.blockTable, 'block').orderBy('block.block_number', 'ASC');
+    let query = this.manager
+      .createQueryBuilder(this.blockTable, 'block')
+      .orderBy('block.block_number', 'ASC');
     const count = await query.getCount();
     theLimit = Math.min(theLimit, count);
 
@@ -98,9 +101,11 @@ export class XrpExternalIndexerEngineService extends IIndexerEngineService {
     }
     if (to !== undefined) {
       if (from === undefined) {
-        query = query.andWhere('block.block_number <= :to', { to }).take(theLimit);
+        query = query
+          .andWhere('block.block_number <= :to', { to })
+          .take(theLimit);
       } else {
-        const tempTo = Math.min(to, from + theLimit - 1)
+        const tempTo = Math.min(to, from + theLimit - 1);
         theLimit = tempTo - from + 1;
         query = query.andWhere('block.block_number <= :tempTo', { tempTo });
       }
@@ -113,7 +118,7 @@ export class XrpExternalIndexerEngineService extends IIndexerEngineService {
       return res.toApiDBBlock();
     });
 
-    return new PaginatedList(items, count, theLimit, 0);
+    return new PaginatedList(items, theLimit, 0);
   }
 
   public async getBlock(blockHash: string): Promise<ApiDBBlock> {
@@ -166,18 +171,15 @@ export class XrpExternalIndexerEngineService extends IIndexerEngineService {
       .limit(theLimit)
       .offset(theOffset);
 
-    const count = await query.getCount();
     const results = await query.getMany();
     const items = results.map((res) => {
       return res.toApiDBTransaction(returnResponse);
     });
 
-    return new PaginatedList(items, count, theLimit, theOffset);
+    return new PaginatedList(items, theLimit, theOffset);
   }
 
-  public async getTransaction(
-    txHash: string,
-  ): Promise<ApiDBTransaction> {
+  public async getTransaction(txHash: string): Promise<ApiDBTransaction> {
     const query = this.manager
       .createQueryBuilder(this.transactionTable, 'transaction')
       .andWhere('transaction.hash = :txHash', { txHash });
@@ -188,7 +190,6 @@ export class XrpExternalIndexerEngineService extends IIndexerEngineService {
     throw new Error('Transaction not found');
   }
 
-
   public async getTransactionBlock(txHash: string): Promise<ApiDBBlock | null> {
     const tx = await this.getTransaction(txHash);
     if (!tx) {

src/utils/api-models/PaginatedList.ts

@@ -1,11 +1,11 @@
 import { ApiProperty } from "@nestjs/swagger";
 
 export class PaginatedList<T> {
-  /**
-   * Count of all items satisfying 'paginatable' request.
-   */
-  @ApiProperty()
-  count: number;
+  // /**
+  //  * Count of all items satisfying 'paginatable' request.
+  //  */
+  // @ApiProperty()
+  // count: number;
   /**
    * Response items.
    */
@@ -21,9 +21,8 @@ export class PaginatedList<T> {
   @ApiProperty()
   offset: number;
 
-  constructor(items: T[], count: number, limit: number, offset: number) {
+  constructor(items: T[], limit: number, offset: number) {
     this.items = items;
-    this.count = count;
     this.limit = limit;
     this.offset = offset;
   }