Add support for CLUSTER MYSHARDID (#2528)

* Add support for CLUSTER.MYSHARDID command

* Update CLUSTER_MYSHARDID.ts

* Update CLUSTER_MYSHARDID.spec.ts

* add test and clean code

---------

Co-authored-by: Leibale Eidelman <me@leibale.com>

packages/client/lib/client/commands.ts

@@ -46,6 +46,7 @@ import * as CLUSTER_KEYSLOT from '../commands/CLUSTER_KEYSLOT';
 import * as CLUSTER_LINKS from '../commands/CLUSTER_LINKS';
 import * as CLUSTER_MEET from '../commands/CLUSTER_MEET';
 import * as CLUSTER_MYID from '../commands/CLUSTER_MYID';
+import * as CLUSTER_MYSHARDID from '../commands/CLUSTER_MYSHARDID';
 import * as CLUSTER_NODES from '../commands/CLUSTER_NODES';
 import * as CLUSTER_REPLICAS from '../commands/CLUSTER_REPLICAS';
 import * as CLUSTER_REPLICATE from '../commands/CLUSTER_REPLICATE';
@@ -216,6 +217,8 @@ export default {
     clusterMeet: CLUSTER_MEET,
     CLUSTER_MYID,
     clusterMyId: CLUSTER_MYID,
+    CLUSTER_MYSHARDID,
+    clusterMyShardId: CLUSTER_MYSHARDID,
     CLUSTER_NODES,
     clusterNodes: CLUSTER_NODES,
     CLUSTER_REPLICAS,

packages/client/lib/commands/CLUSTER_MYSHARDID.spec.ts

@@ -0,0 +1,22 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './CLUSTER_MYSHARDID';
+
+describe('CLUSTER MYSHARDID', () => {
+    testUtils.isVersionGreaterThanHook([7, 2]);
+
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments(),
+            ['CLUSTER', 'MYSHARDID']
+        );
+    });
+
+    testUtils.testWithCluster('clusterNode.clusterMyShardId', async cluster => {
+        const client = await cluster.nodeClient(cluster.masters[0]);
+        assert.equal(
+            typeof await client.clusterMyShardId(),
+            'string'
+        );
+    }, GLOBAL.CLUSTERS.OPEN);
+});

packages/client/lib/commands/CLUSTER_MYSHARDID.ts

@@ -0,0 +1,7 @@
+export const IS_READ_ONLY = true;
+
+export function transformArguments() {
+    return ['CLUSTER', 'MYSHARDID'];
+}
+
+export declare function transformReply(): string | Buffer;