feat: compare chainId and compare app version

package.json

@@ -33,6 +33,7 @@
     "@chainsafe/ssz": "^0.9.2",
     "@ethersproject/providers": "^5.4.5",
     "@lido-nestjs/fetch": "^1.3.1",
+    "@lido-nestjs/key-validation": "^7.4.0",
     "@lido-nestjs/middleware": "^1.1.1",
     "@lido-sdk/constants": "^3.2.1",
     "@nestjs/common": "^8.0.0",
@@ -41,24 +42,24 @@
     "@nestjs/platform-express": "^8.1.1",
     "@nestjs/schedule": "^2.1.0",
     "@nestjs/terminus": "^8.0.1",
-    "@lido-nestjs/key-validation": "^7.4.0",
     "@willsoto/nestjs-prometheus": "^4.0.1",
     "app-root-path": "^3.0.0",
     "cache-manager": "^3.6.3",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.0",
+    "compare-versions": "^6.1.0",
     "ethers": "^5.4.7",
     "glob": "^7.1.2",
     "kafkajs": "^1.15.0",
+    "lru-cache": "^9.1.1",
     "nest-winston": "^1.6.1",
     "node-abort-controller": "^3.0.1",
     "prom-client": "^14.0.0",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
     "rxjs": "^7.2.0",
     "winston": "^3.3.3",
-    "ws": "^8.10.0",
-    "lru-cache": "^9.1.1"
+    "ws": "^8.10.0"
   },
   "devDependencies": {
     "@nestjs/cli": "^8.2.5",

src/guardian/guardian.constants.ts

@@ -3,3 +3,4 @@ import { CronExpression } from '@nestjs/schedule';
 export const GUARDIAN_DEPOSIT_RESIGNING_BLOCKS = 10;
 export const GUARDIAN_DEPOSIT_JOB_NAME = 'guardian-deposit-job';
 export const GUARDIAN_DEPOSIT_JOB_DURATION = CronExpression.EVERY_5_SECONDS;
+export const MIN_KAPI_VERSION = '0.10.2';

src/guardian/guardian.module.ts

@@ -10,6 +10,7 @@ import { BlockGuardModule } from './block-guard/block-guard.module';
 import { StakingModuleGuardModule } from './staking-module-guard';
 import { GuardianMessageModule } from './guardian-message';
 import { GuardianMetricsModule } from './guardian-metrics';
+import { KeysApiModule } from 'keys-api/keys-api.module';
 
 @Module({
   imports: [
@@ -23,6 +24,7 @@ import { GuardianMetricsModule } from './guardian-metrics';
     StakingModuleGuardModule,
     GuardianMessageModule,
     GuardianMetricsModule,
+    KeysApiModule,
   ],
   providers: [GuardianService],
   exports: [GuardianService],

src/guardian/guardian.service.ts

@@ -4,6 +4,7 @@ import {
   LoggerService,
   OnModuleInit,
 } from '@nestjs/common';
+import { compare } from 'compare-versions';
 import { WINSTON_MODULE_NEST_PROVIDER } from 'nest-winston';
 import { SchedulerRegistry } from '@nestjs/schedule';
 import { CronJob } from 'cron';
@@ -22,6 +23,9 @@ import { StakingModuleGuardService } from './staking-module-guard';
 import { GuardianMessageService } from './guardian-message';
 import { GuardianMetricsService } from './guardian-metrics';
 import { StakingModuleData } from './interfaces';
+import { ProviderService } from 'provider';
+import { KeysApiService } from 'keys-api/keys-api.service';
+import { MIN_KAPI_VERSION } from './guardian.constants';
 
 @Injectable()
 export class GuardianService implements OnModuleInit {
@@ -42,6 +46,9 @@ export class GuardianService implements OnModuleInit {
     private stakingModuleGuardService: StakingModuleGuardService,
     private guardianMessageService: GuardianMessageService,
     private guardianMetricsService: GuardianMetricsService,
+
+    private providerService: ProviderService,
+    private keysApiService: KeysApiService,
   ) {}
 
   public async onModuleInit(): Promise<void> {
@@ -57,6 +64,29 @@ export class GuardianService implements OnModuleInit {
           this.securityService.initialize({ blockHash }),
         ]);
 
+        const chainId = await this.providerService.getChainId();
+        const keysApiStatus = await this.keysApiService.getKeysApiStatus();
+
+        if (chainId !== keysApiStatus.chainId) {
+          this.logger.warn('Wrong KAPI chainId', {
+            chainId,
+            keysApiChainId: keysApiStatus.chainId,
+          });
+          throw new Error(
+            'The ChainId in KeysAPI must match the ChainId in EL Node',
+          );
+        }
+
+        if (!compare(keysApiStatus.appVersion, MIN_KAPI_VERSION, '>=')) {
+          this.logger.warn('Wrong KAPI version', {
+            minKAPIVersion: MIN_KAPI_VERSION,
+            keysApiVersion: keysApiStatus.appVersion,
+          });
+          throw new Error(
+            `The KAPI version must be greater than or equal to ${MIN_KAPI_VERSION}`,
+          );
+        }
+
         // The event cache is stored with an N block lag to avoid caching data from uncle blocks
         // so we don't worry about blockHash here
         await this.depositService.updateEventsCache();

src/keys-api/interfaces/Status.ts

@@ -0,0 +1,6 @@
+export type Status = {
+  /** @description App version */
+  appVersion: string;
+  /** @description Chain id */
+  chainId: number;
+};

src/keys-api/interfaces/index.ts

@@ -1,2 +1,3 @@
 export type { SRModule } from './SRModule';
 export type { KeyListResponse } from './KeyListResponse';
+export type { Status } from './Status';

src/keys-api/keys-api.service.ts

@@ -2,7 +2,7 @@ import { Injectable, LoggerService, Inject } from '@nestjs/common';
 import { FetchService, RequestInit } from '@lido-nestjs/fetch';
 import { AbortController } from 'node-abort-controller';
 import { FETCH_REQUEST_TIMEOUT } from './keys-api.constants';
-import { KeyListResponse } from './interfaces';
+import { KeyListResponse, Status } from './interfaces';
 import { WINSTON_MODULE_NEST_PROVIDER } from 'nest-winston';
 import { Configuration } from 'common/config';
 import { GroupedByModuleOperatorListResponse } from './interfaces/GroupedByModuleOperatorListResponse';
@@ -68,4 +68,14 @@ export class KeysApiService {
     );
     return result;
   }
+
+  /**
+   *
+   * @param The /v1/status API endpoint returns chainId, appVersion, El and Cl meta
+   * @returns
+   */
+  public async getKeysApiStatus(): Promise<Status> {
+    const result = await this.fetch<Status>(`/v1/status`);
+    return result;
+  }
 }

yarn.lock

@@ -2909,6 +2909,11 @@ commander@^2.20.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
+compare-versions@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/compare-versions/-/compare-versions-6.1.0.tgz#3f2131e3ae93577df111dba133e6db876ffe127a"
+  integrity sha512-LNZQXhqUvqUTotpZ00qLSaify3b4VFD588aRr8MKFw4CMUr98ytzCW5wDH5qx/DEY5kCDXcbcRuCqL0szEf2tg==
+
 component-emitter@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"