fix: add prometheus for every service

Author: naman22a

apps/auth-service/src/app.module.ts

@@ -4,6 +4,7 @@ import { MailModule } from './mail/mail.module';
 import { ConfigModule } from '@nestjs/config';
 import { configuration, validate } from '@leetcode/config';
 import { DatabaseModule } from '@leetcode/database';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -17,6 +18,7 @@ import { DatabaseModule } from '@leetcode/database';
         DatabaseModule,
         AuthModule,
         MailModule,
+        PrometheusModule.register(),
     ],
     controllers: [],
     providers: [],

apps/companies-service/src/app.module.ts

@@ -3,6 +3,7 @@ import { DatabaseModule } from '@leetcode/database';
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
 import { CompaniesController } from './companies/companies.controller';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -14,6 +15,7 @@ import { CompaniesController } from './companies/companies.controller';
             validate,
         }),
         DatabaseModule,
+        PrometheusModule.register(),
     ],
     controllers: [CompaniesController],
     providers: [],

apps/execution-service/src/app.module.ts

@@ -5,6 +5,7 @@ import { Configuration, configuration, validate } from '@leetcode/config';
 import { DatabaseModule } from '@leetcode/database';
 import { ExecutionConsumer } from './execution/execution.worker';
 import { BullModule } from '@nestjs/bullmq';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -32,6 +33,7 @@ import { BullModule } from '@nestjs/bullmq';
         BullModule.registerQueue({
             name: 'results-queue',
         }),
+        PrometheusModule.register(),
     ],
     controllers: [],
     providers: [ExecutionService, ExecutionConsumer],

apps/problems-service/src/app.module.ts

@@ -4,6 +4,7 @@ import { DatabaseModule } from '@leetcode/database';
 import { ConfigModule } from '@nestjs/config';
 import { configuration, validate } from '@leetcode/config';
 import { ProblemsService } from './problems/problems.service';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -15,6 +16,7 @@ import { ProblemsService } from './problems/problems.service';
             validate,
         }),
         DatabaseModule,
+        PrometheusModule.register(),
     ],
     controllers: [ProblemsController],
     providers: [ProblemsService],

apps/submissions-service/src/app.module.ts

@@ -5,6 +5,7 @@ import { ConfigModule, ConfigService } from '@nestjs/config';
 import { Configuration, configuration, validate } from '@leetcode/config';
 import { BullModule } from '@nestjs/bullmq';
 import { ResultsConsumer } from './submissions/submissions.worker';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -32,6 +33,7 @@ import { ResultsConsumer } from './submissions/submissions.worker';
         BullModule.registerQueue({
             name: 'notifications-queue',
         }),
+        PrometheusModule.register(),
     ],
     controllers: [SubmissionsController],
     providers: [ResultsConsumer],

apps/tags-service/src/app.module.ts

@@ -3,6 +3,7 @@ import { DatabaseModule } from '@leetcode/database';
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
 import { TagsController } from './tags/tags.controller';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -14,6 +15,7 @@ import { TagsController } from './tags/tags.controller';
             validate,
         }),
         DatabaseModule,
+        PrometheusModule.register(),
     ],
     controllers: [TagsController],
     providers: [],

apps/users-service/src/app.module.ts

@@ -3,6 +3,7 @@ import { UsersController } from './users/users.controller';
 import { DatabaseModule } from '@leetcode/database';
 import { ConfigModule } from '@nestjs/config';
 import { configuration, validate } from '@leetcode/config';
+import { PrometheusModule } from '@willsoto/nestjs-prometheus';
 
 @Module({
     imports: [
@@ -14,6 +15,7 @@ import { configuration, validate } from '@leetcode/config';
             validate,
         }),
         DatabaseModule,
+        PrometheusModule.register(),
     ],
     controllers: [UsersController],
     providers: [],

prometheus.yml

@@ -2,6 +2,16 @@ global:
     scrape_interval: 4s
 
 scrape_configs:
-    - job_name: 'api-gateway'
+    - job_name: 'prometheus'
       static_configs:
-          - targets: ['api-gateway:5000']
+          - targets:
+                [
+                    'api-gateway:5000',
+                    'users-service:5001',
+                    'auth-service:5002',
+                    'problems-service:5003',
+                    'tags-service:5004',
+                    'companies-service:5005',
+                    'submissions-service:5006',
+                    'execution-service:5007',
+                ]