feat: implement RuntimeConfig (#144)

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RuntimeConfig can be injected in tegg and standalone

It contains

- baseDir
- env
- name


##### Checklist
<!-- Remove items that do not apply. For completed items, change [ ] to
[x]. -->

- [ ] `npm test` passes
- [ ] tests and/or benchmarks are included
- [ ] documentation is changed or added
- [ ] commit message follows commit guidelines

##### Affected core subsystem(s)
<!-- Provide affected core subsystem(s). -->


##### Description of change
<!-- Provide a description of the change below this comment. -->

<!--
- any feature?
- close https://github.com/eggjs/egg/ISSUE_URL
-->

core/common-util/index.ts

@@ -7,3 +7,4 @@ export * from './src/StackUtil';
 export * from './src/ProxyUtil';
 export * from './src/ModuleConfig';
 export * from './src/TimerUtil';
+export * from './src/RuntimeConfig';

core/common-util/src/RuntimeConfig.ts

@@ -0,0 +1,18 @@
+export type EnvType = 'local' | 'unittest' | 'prod' | string;
+
+export interface RuntimeConfig {
+  /**
+   * Application name
+   */
+  name: string;
+
+  /**
+   * Application environment
+   */
+  env: EnvType;
+
+  /**
+   * Application directory
+   */
+  baseDir: string;
+}

core/tegg/index.ts

@@ -7,3 +7,4 @@ export * from '@eggjs/tegg-background-task';
 export * as aop from '@eggjs/aop-decorator';
 export * as orm from '@eggjs/tegg-orm-decorator';
 export * as schedule from '@eggjs/tegg-schedule-decorator';
+export { RuntimeConfig } from '@eggjs/tegg-common-util';

plugin/tegg/app/extend/application.ts

@@ -16,7 +16,8 @@ import {
   LoadUnitInstanceLifecycleUtil,
 } from '@eggjs/tegg-runtime';
 import { LoaderFactory } from '@eggjs/tegg-loader';
-import { EggProtoImplClass, PrototypeUtil, IdenticalUtil } from '@eggjs/tegg';
+import { EggProtoImplClass, PrototypeUtil, IdenticalUtil, RuntimeConfig } from '@eggjs/tegg';
+import type { Application } from 'egg';
 
 export default {
   // @eggjs/tegg-metadata should not depend by other egg plugins.
@@ -78,6 +79,16 @@ export default {
     return IdenticalUtil;
   },
 
+  get runtimeConfig(): RuntimeConfig {
+    const app = this as unknown as Application;
+    const config = app.config;
+    return {
+      baseDir: config.baseDir,
+      env: config.env,
+      name: config.name,
+    };
+  },
+
   async getEggObject(clazz: EggProtoImplClass) {
     const proto = PrototypeUtil.getClazzProto(clazz);
     if (!proto) {

plugin/tegg/test/EggCompatible.test.ts

@@ -81,6 +81,13 @@ describe('test/EggCompatible.test.ts', () => {
     await app.mockModuleContextScope(async () => {
       const baseDir = app.module.multiModuleService.configService.getBaseDir();
       assert(baseDir);
+
+      const runtimeConfig = app.module.multiModuleService.configService.getRuntimeConfig();
+      assert.deepEqual(runtimeConfig, {
+        baseDir: path.join(__dirname, 'fixtures/apps/egg-app'),
+        env: 'unittest',
+        name: 'egg-app',
+      });
     });
   });
 

plugin/tegg/test/fixtures/apps/egg-app/modules/multi-module-service/ConfigService.ts

@@ -1,4 +1,4 @@
-import { AccessLevel, SingletonProto, Inject } from '@eggjs/tegg';
+import { AccessLevel, SingletonProto, Inject, RuntimeConfig } from '@eggjs/tegg';
 import { EggAppConfig } from 'egg';
 
 interface XSessionUser {
@@ -10,10 +10,13 @@ interface XSessionUser {
 })
 export default class ConfigService {
   @Inject()
-  user: XSessionUser;
+  private user: XSessionUser;
 
   @Inject()
-  config: EggAppConfig;
+  private config: EggAppConfig;
+
+  @Inject()
+  private runtimeConfig: RuntimeConfig;
 
   getBaseDir(): string {
     return this.config.baseDir;
@@ -22,4 +25,9 @@ export default class ConfigService {
   async getCurrentUserName(): Promise<string> {
     return this.user.userName;
   }
+
+  getRuntimeConfig(): RuntimeConfig {
+    return this.runtimeConfig;
+  }
+
 }

standalone/standalone/src/Runner.ts

@@ -1,4 +1,4 @@
-import { ModuleConfigUtil, ModuleReference } from '@eggjs/tegg-common-util';
+import { ModuleConfigUtil, ModuleReference, RuntimeConfig } from '@eggjs/tegg-common-util';
 import {
   EggPrototype,
   LoadUnit,
@@ -55,6 +55,14 @@ export class Runner {
       moduleConfig: [],
     };
 
+    const runtimeConfig: Partial<RuntimeConfig> = {
+      baseDir: this.cwd,
+    };
+    // Inject runtimeConfig
+    this.innerObjects.runtimeConfig = [{
+      obj: runtimeConfig,
+    }];
+
     for (const reference of this.moduleReferences) {
       const absoluteRef = {
         path: ModuleConfigUtil.resolveModuleDir(reference.path, this.cwd),

standalone/standalone/src/StandaloneLoadUnit.ts

@@ -40,7 +40,6 @@ export class StandaloneLoadUnit implements LoadUnit {
     }
   }
 
-
   containPrototype(proto: EggPrototype): boolean {
     return !!(this.protoMap.get(proto.name)?.find(t => t === proto));
   }

standalone/standalone/test/fixtures/inner-object/foo.ts

@@ -14,4 +14,5 @@ export class Foo implements MainRunner<string> {
   async main(): Promise<string> {
     return this.hello.hello();
   }
+
 }

standalone/standalone/test/fixtures/runtime-config/foo.ts

@@ -0,0 +1,15 @@
+import { Inject, SingletonProto } from '@eggjs/tegg';
+import { RuntimeConfig } from '@eggjs/tegg-common-util';
+import { Runner, MainRunner } from '@eggjs/tegg/standalone';
+
+@Runner()
+@SingletonProto()
+export class Foo implements MainRunner<RuntimeConfig> {
+  @Inject()
+  runtimeConfig: RuntimeConfig;
+
+  async main(): Promise<RuntimeConfig> {
+    return this.runtimeConfig;
+  }
+
+}

standalone/standalone/test/fixtures/runtime-config/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "runtime-config",
+  "eggModule": {
+    "name": "runtime-config"
+  }
+}

standalone/standalone/test/index.test.ts

@@ -65,4 +65,12 @@ describe('test/index.test.ts', () => {
       assert.deepStrictEqual(configs.get('bar'), bar);
     });
   });
+
+  describe('runner with runtimeConfig', () => {
+    it('should work', async () => {
+      const msg = await main(path.join(__dirname, './fixtures/runtime-config'));
+      assert.deepEqual(msg, { baseDir: path.join(__dirname, './fixtures/runtime-config') });
+    });
+  });
+
 });