Added script for sharding table cleaning

hardhat.config.ts

@@ -14,6 +14,7 @@ import { lazyObject } from 'hardhat/plugins';
 import { HardhatRuntimeEnvironment } from 'hardhat/types';
 
 import './tasks/address_converter';
+import './tasks/clear_sharding_table';
 import './tasks/deploy_test_token';
 import './tasks/low_level_call_data_encoder';
 import './tasks/mint_test_tokens';

tasks/clear_sharding_table.ts

@@ -0,0 +1,42 @@
+import fs from 'fs/promises';
+
+import { task } from 'hardhat/config';
+import { HardhatRuntimeEnvironment } from 'hardhat/types';
+
+type ConverterParameters = {
+  filePath: string;
+};
+
+task('clear_sharding_table', 'Removed nodes from sharding table by node IDs from the CSV file')
+  .addParam<string>('filePath', 'Path to CSV file with Node IDs')
+  .setAction(async (taskArgs: ConverterParameters, hre: HardhatRuntimeEnvironment) => {
+    const { filePath } = taskArgs;
+
+    let nodeIdsToDelete: string[];
+    try {
+      const data = await fs.readFile(filePath, 'utf8');
+      nodeIdsToDelete = data
+        .trim()
+        .split('\n')
+        .map((row) => row.split(',')[0]);
+    } catch (err) {
+      console.error(err);
+      nodeIdsToDelete = [];
+    }
+
+    const ShardingTableABI = hre.helpers.getAbi('ShardingTable');
+    const shardingTableAddress = hre.helpers.contractDeployments.contracts['ShardingTable'].evmAddress;
+    const ShardingTable = await hre.ethers.getContractAt(ShardingTableABI, shardingTableAddress);
+
+    const table = await ShardingTable['getShardingTable()']();
+
+    for (const node of table) {
+      const nodeIdString = hre.ethers.utils.toUtf8String(node.nodeId);
+
+      if (nodeIdsToDelete.includes(nodeIdString)) {
+        console.log(`Deleting node with identityId: ${node.identityId}`);
+
+        await ShardingTable.removeNode(node.identityId);
+      }
+    }
+  });