calculate & index cpfp packages

backend/src/repositories/CpfpRepository.ts

@@ -0,0 +1,43 @@
+import DB from '../database';
+import logger from '../logger';
+import { Ancestor } from '../mempool.interfaces';
+
+class CpfpRepository {
+  public async $saveCluster(height: number, txs: Ancestor[], effectiveFeePerVsize: number): Promise<void> {
+    try {
+      const txsJson = JSON.stringify(txs);
+      await DB.query(
+        `
+          INSERT INTO cpfp_clusters(root, height, txs, fee_rate)
+          VALUE (?, ?, ?, ?)
+          ON DUPLICATE KEY UPDATE
+            height = ?,
+            txs = ?,
+            fee_rate = ?
+        `,
+        [txs[0].txid, height, txsJson, effectiveFeePerVsize, height, txsJson, effectiveFeePerVsize, height]
+      );
+    } catch (e: any) {
+      logger.err(`Cannot save cpfp cluster into db. Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+
+  public async $deleteClustersFrom(height: number): Promise<void> {
+    logger.info(`Delete newer cpfp clusters from height ${height} from the database`);
+    try {
+      await DB.query(
+        `
+          DELETE from cpfp_clusters
+          WHERE height >= ?
+        `,
+        [height]
+      );
+    } catch (e: any) {
+      logger.err(`Cannot delete cpfp clusters from db. Reason: ` + (e instanceof Error ? e.message : e));
+      throw e;
+    }
+  }
+}
+
+export default new CpfpRepository();