extract health to module

src/app.module.ts

@@ -3,12 +3,14 @@ import { AutomapperModule } from '@automapper/nestjs';
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
 import { ConfigurationModule } from './modules/configuration/configuration.module';
+import { HealthModule } from './modules/health/health.module';
 
 @Module({
   imports: [
     ConfigModule.forRoot({ isGlobal: true }),
     AutomapperModule.forRoot({ strategyInitializer: classes() }),
     ConfigurationModule,
+    HealthModule,
   ],
   controllers: [],
   providers: [],

src/main.ts

@@ -9,11 +9,14 @@ async function bootstrap() {
     {
       transport: Transport.GRPC,
       options: {
-        package: 'configuration',
-        protoPath: join(
-          __dirname,
-          'modules/configuration/adapters/primaries/configuration.proto',
-        ),
+        package: ['configuration', 'health'],
+        protoPath: [
+          join(
+            __dirname,
+            'modules/configuration/adapters/primaries/configuration.proto',
+          ),
+          join(__dirname, 'modules/health/adapters/primaries/health.proto'),
+        ],
         url: process.env.SERVICE_URL + ':' + process.env.SERVICE_PORT,
         loader: { keepCase: true },
       },

src/modules/health/adapters/primaries/health.controller.ts

@@ -0,0 +1,27 @@
+import { Controller } from '@nestjs/common';
+import { GrpcMethod } from '@nestjs/microservices';
+
+enum ServingStatus {
+  UNKNOWN = 0,
+  SERVING = 1,
+  NOT_SERVING = 2,
+}
+
+interface HealthCheckRequest {
+  service: string;
+}
+
+interface HealthCheckResponse {
+  status: ServingStatus;
+}
+
+@Controller()
+export class HealthController {
+  @GrpcMethod('Health', 'Check')
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  check(data: HealthCheckRequest, metadata: any): HealthCheckResponse {
+    return {
+      status: ServingStatus.SERVING,
+    };
+  }
+}

src/modules/health/adapters/primaries/health.proto

@@ -0,0 +1,21 @@
+syntax = "proto3";
+
+package health;
+
+
+service Health {
+  rpc Check(HealthCheckRequest) returns (HealthCheckResponse);
+}
+
+message HealthCheckRequest {
+  string service = 1;
+}
+
+message HealthCheckResponse {
+  enum ServingStatus {
+    UNKNOWN = 0;
+    SERVING = 1;
+    NOT_SERVING = 2;
+  }
+  ServingStatus status = 1;
+}

src/modules/health/health.module.ts

@@ -0,0 +1,7 @@
+import { Module } from '@nestjs/common';
+import { HealthController } from './adapters/primaries/health.controller';
+
+@Module({
+  controllers: [HealthController],
+})
+export class HealthModule {}