Add local acceleration info APIs

backend/src/repositories/AccelerationRepository.ts

@@ -3,6 +3,22 @@ import { ResultSetHeader, RowDataPacket } from 'mysql2';
 import DB from '../database';
 import logger from '../logger';
 import { IEsploraApi } from '../api/bitcoin/esplora-api.interface';
+import { Common } from '../api/common';
+import config from '../config';
+
+export interface PublicAcceleration {
+  txid: string,
+  height: number,
+  pool: {
+    id: number,
+    slug: string,
+    name: string,
+  },
+  effective_vsize: number,
+  effective_fee: number,
+  boost_rate: number,
+  boost_cost: number,
+}
 
 class AccelerationRepository {
   public async $saveAcceleration(acceleration: AccelerationInfo, block: IEsploraApi.Block, pool_id: number): Promise<void> {
@@ -38,6 +54,56 @@ class AccelerationRepository {
       // We don't throw, not a critical issue if we miss some accelerations
     }
   }
+
+  public async $getAccelerationInfo(poolSlug: string | null = null, height: number | null = null, interval: string | null = null): Promise<PublicAcceleration[]> {
+    interval = Common.getSqlInterval(interval);
+
+    if (!config.MEMPOOL_SERVICES.ACCELERATIONS || (interval == null && poolSlug == null && height == null)) {
+      return [];
+    }
+
+    let query = `
+      SELECT * FROM accelerations
+      JOIN pools on pools.unique_id = accelerations.pool
+    `;
+    let params: any[] = [];
+
+    if (interval) {
+      query += ` WHERE accelerations.added BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW() `;
+    } else if (height != null) {
+      query += ` WHERE accelerations.height = ? `;
+      params.push(height);
+    } else if (poolSlug != null) {
+      query += ` WHERE pools.slug = ? `;
+      params.push(poolSlug);
+    }
+
+    query += ` ORDER BY accelerations.added DESC `;
+
+    try {
+      const [rows] = await DB.query(query, params) as RowDataPacket[][];
+      if (rows?.length) {
+        return rows.map(row => ({
+          txid: row.txid,
+          height: row.height,
+          pool: {
+            id: row.id,
+            slug: row.slug,
+            name: row.name,
+          },
+          effective_vsize: row.effective_vsize,
+          effective_fee: row.effective_fee,
+          boost_rate: row.boost_rate,
+          boost_cost: row.boost_cost,
+        }));
+      } else {
+        return [];
+      }
+    } catch (e) {
+      logger.err(`Cannot query acceleration info. Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
 }
 
 export default new AccelerationRepository();