src/app.module.ts

@@ -37,6 +37,7 @@ import { RedisModule } from 'nestjs-redis';
         debug: configService.get<string>('env') !== 'prod',
         playground: true,
         autoSchemaFile: true,
+        installSubscriptionHandlers: true,
       }),
       inject: [ConfigService],
     }),

src/repos/list-logs.consumer.ts

@@ -0,0 +1,24 @@
+import { PubSub } from 'graphql-subscriptions';
+import { ReposService } from './repos.service';
+import { Processor, Process } from '@nestjs/bull';
+import { Job } from 'bull';
+import { ListLogsOption } from './models/list-logs.options';
+import {
+  LIST_LOGS_DONE,
+  LIST_LOGS_PUB_SUB,
+  LIST_LOGS_TASK,
+} from './repos.constants';
+import { Inject } from '@nestjs/common';
+@Processor(LIST_LOGS_TASK)
+export class ListLogsConsumer {
+  constructor(
+    private readonly service: ReposService,
+    @Inject(LIST_LOGS_PUB_SUB)
+    private readonly pubSub: PubSub,
+  ) {}
+  @Process()
+  async listLogs(job: Job<ListLogsOption>) {
+    const logs = await this.service.listLogs(job.data);
+    this.pubSub.publish(LIST_LOGS_DONE, logs);
+  }
+}

src/repos/repos.constants.ts

@@ -1 +1,3 @@
 export const LIST_LOGS_TASK = 'LIST_LOGS_TASK';
+export const LIST_LOGS_PUB_SUB = 'LIST_LOGS_PUB_SUB';
+export const LIST_LOGS_DONE = 'LIST_LOGS_DONE';

src/repos/repos.module.ts

@@ -5,10 +5,27 @@ import { ReposResolver } from './repos.resolver';
 import { ReposService } from './repos.service';
 import { ConfigModule } from '@nestjs/config';
 import { ProjectsModule } from '../projects/projects.module';
+import { BullModule } from '@nestjs/bull';
+import { LIST_LOGS_TASK, LIST_LOGS_PUB_SUB } from './repos.constants';
+import { PubSub } from 'graphql-subscriptions';
 
 @Module({
-  imports: [TypeOrmModule.forFeature([Project]), ConfigModule, ProjectsModule],
-  providers: [ReposResolver, ReposService],
+  imports: [
+    TypeOrmModule.forFeature([Project]),
+    ConfigModule,
+    ProjectsModule,
+    BullModule.registerQueue({
+      name: LIST_LOGS_TASK,
+    }),
+  ],
+  providers: [
+    ReposResolver,
+    ReposService,
+    {
+      provide: LIST_LOGS_PUB_SUB,
+      useValue: new PubSub(),
+    },
+  ],
   exports: [ReposService],
 })
 export class ReposModule {}

src/repos/repos.resolver.ts

@@ -1,26 +1,17 @@
-import { Args, Query, Resolver } from '@nestjs/graphql';
-import { ListLogsArgs } from './dtos/list-logs.args';
-import { ReposService } from './repos.service';
+import { LIST_LOGS_DONE, LIST_LOGS_PUB_SUB } from './repos.constants';
+import { Resolver, Subscription } from '@nestjs/graphql';
 import { LogList } from './dtos/log-list.model';
-import { ListBranchesArgs } from './dtos/list-branches.args';
-import { BranchList } from './dtos/branch-list.model';
+import { Inject } from '@nestjs/common';
+import { PubSub } from 'apollo-server-express';
 
 @Resolver()
 export class ReposResolver {
-  constructor(private readonly service: ReposService) {}
-  @Query(() => LogList)
-  async listLogs(@Args('listLogsArgs') dto: ListLogsArgs) {
-    return await this.service.listLogs(dto);
-  }
-  @Query(() => BranchList)
-  async listBranches(
-    @Args('listBranchesArgs') dto: ListBranchesArgs,
-  ): Promise<BranchList> {
-    return await this.service.listBranches(dto).then((data) => {
-      return {
-        ...data,
-        branches: Object.values(data.branches),
-      };
-    });
+  constructor(
+    @Inject(LIST_LOGS_PUB_SUB)
+    private readonly pubSub: PubSub,
+  ) {}
+  @Subscription(() => LogList)
+  listLogsDone() {
+    return this.pubSub.asyncIterator(LIST_LOGS_DONE);
   }
 }

src/repos/repos.service.ts

@@ -1,3 +1,4 @@
+import { ListLogsOption } from './models/list-logs.options';
 import { Pipeline } from './../pipelines/pipeline.entity';
 import { PipelineTask } from './../pipeline-tasks/pipeline-task.entity';
 import { Injectable, NotFoundException } from '@nestjs/common';
@@ -47,14 +48,9 @@ export class ReposService {
     return git;
   }
 
-  async listLogs(dto: ListLogsArgs) {
-    const project = await this.projectRepository.findOneOrFail({
-      id: dto.projectId,
-    });
+  async listLogs({ project, branch }: ListLogsOption) {
     const git = await this.getGit(project);
-    return await git.log(
-      dto.branch ? ['--branches', dto.branch, '--'] : ['--all'],
-    );
+    return await git.log(branch ? ['--branches', branch, '--'] : ['--all']);
   }
 
   async listBranches(dto: ListBranchesArgs) {