fix: fix mempool transaction issue response issue

 make changes to mempool response as per rosetta

Author: asimm241

src/api/routes/rosetta/mempool.ts

@@ -6,6 +6,7 @@ import { parseLimitQuery, parsePagingQueryInput } from '../../pagination';
 import { rosettaValidateRequest, ValidSchema, makeRosettaError } from '../../rosetta-validate';
 import {
   RosettaMempoolResponse,
+  RosettaMempoolTransactionResponse,
   RosettaTransaction,
 } from '@blockstack/stacks-blockchain-api-types';
 import { getOperations } from '../../../rosetta-helpers';
@@ -28,23 +29,17 @@ export function createRosettaMempoolRouter(db: DataStore): RouterWithAsync {
       return;
     }
 
-    const limit = req.body.metadata
-      ? parseMempoolTxQueryLimit(req.body.metadata.limit ?? 100)
-      : 100;
-    const offset = req.body.metadata ? parsePagingQueryInput(req.body.metadata.offset ?? 0) : 0;
-    const { results: txResults, total } = await db.getMempoolTxIdList({ offset, limit });
+    // const limit = req.body.metadata
+    //   ? parseMempoolTxQueryLimit(req.body.metadata.limit ?? 100)
+    //   : 100;
+    // const offset = req.body.metadata ? parsePagingQueryInput(req.body.metadata.offset ?? 0) : 0;
+    const { results: txResults, total } = await db.getMempoolTxIdList();
 
     const transaction_identifiers = txResults.map(tx => {
       return { hash: tx.tx_id };
     });
-    const metadata = {
-      limit: limit,
-      total: total,
-      offset: offset,
-    };
     const response: RosettaMempoolResponse = {
       transaction_identifiers,
-      metadata,
     };
     res.json(response);
   });
@@ -68,10 +63,13 @@ export function createRosettaMempoolRouter(db: DataStore): RouterWithAsync {
     }
 
     const operations = getOperations(mempoolTxQuery.result);
-    const result: RosettaTransaction = {
+    const transaction: RosettaTransaction = {
       transaction_identifier: { hash: tx_id },
       operations: operations,
     };
+    const result: RosettaMempoolTransactionResponse = {
+      transaction: transaction,
+    };
     res.json(result);
   });
 

src/datastore/common.ts

@@ -249,10 +249,7 @@ export interface DataStore extends DataStoreEventEmitter {
     limit: number;
     offset: number;
   }): Promise<{ results: DbMempoolTx[]; total: number }>;
-  getMempoolTxIdList(args: {
-    limit: number;
-    offset: number;
-  }): Promise<{ results: DbMempoolTxId[]; total: number }>;
+  getMempoolTxIdList(): Promise<{ results: DbMempoolTxId[]; total: number }>;
   getTx(txId: string): Promise<FoundOrNot<DbTx>>;
   getTxList(args: {
     limit: number;

src/datastore/memory-store.ts

@@ -178,10 +178,7 @@ export class MemoryDataStore extends (EventEmitter as { new (): DataStoreEventEm
     throw new Error('not yet implemented');
   }
 
-  getMempoolTxIdList(args: {
-    limit: number;
-    offset: number;
-  }): Promise<{ results: DbMempoolTx[]; total: number }> {
+  getMempoolTxIdList(): Promise<{ results: DbMempoolTx[]; total: number }> {
     throw new Error('not yet implemented');
   }
 

src/datastore/postgres-store.ts

@@ -1152,13 +1152,7 @@ export class PgDataStore extends (EventEmitter as { new (): DataStoreEventEmitte
     return { results: parsed, total: totalQuery.rows[0].count };
   }
 
-  async getMempoolTxIdList({
-    limit,
-    offset,
-  }: {
-    limit: number;
-    offset: number;
-  }): Promise<{ results: DbMempoolTxId[]; total: number }> {
+  async getMempoolTxIdList(): Promise<{ results: DbMempoolTxId[]; total: number }> {
     const totalQuery = await this.pool.query<{ count: number }>(
       `
       SELECT COUNT(*)::integer
@@ -1170,10 +1164,7 @@ export class PgDataStore extends (EventEmitter as { new (): DataStoreEventEmitte
       SELECT ${MEMPOOL_TX_ID_COLUMNS}
       FROM mempool_txs
       ORDER BY receipt_time DESC
-      LIMIT $1
-      OFFSET $2
-      `,
-      [limit, offset]
+      `
     );
     const parsed = resultQuery.rows.map(r => {
       const tx: DbMempoolTxId = {