feat(env-var): support extra environment variables for backend contai…

…ners

.env.template

@@ -7,4 +7,11 @@ export CERTIFICATE_ARN=abc123
 export ZONE_NAME=example.com
 export API_DOMAIN_NAME=api.example.com
 export BACKEND_API_URL=https://api.example.com
-export FRONTEND_URL=https://app.example.com
+export FRONTEND_URL=https://app.example.com
+
+# email settings for sending email with gmail
+export EMAIL_HOST=smtp.gmail.com
+export EMAIL_HOST_USER=email@gmail.com
+export EMAIL_HOST_PASSWORD=email-password
+export EMAIL_PORT=587
+export ADMINS=email@gmail.com

src/django-ecs.ts

@@ -94,6 +94,11 @@ export interface DjangoEcsProps {
    */
   readonly frontendUrl?: string;
 
+  /**
+   * Extra Environment Variables to set in the backend container
+   */
+  readonly environmentVariables?: { [key: string]: string };
+
 }
 
 /**
@@ -192,6 +197,14 @@ export class DjangoEcs extends cdk.Construct {
       ZONE_NAME: props.zoneName ?? '',
     };
 
+    if (props.environmentVariables ?? false) {
+      // add environment variables to environment
+      // merge the two objects (change const to let for `environment` declaration)
+      // environment = { ...environment, ...props.environmentVariables };
+      // or with Object.assign
+      Object.assign(environment, props.environmentVariables);
+    }
+
     taskDefinition.addContainer('backendContainer', {
       image: this.image,
       environment,

src/django-vue.ts

@@ -20,11 +20,10 @@
  *
  **/
 
-import * as cdk from '@aws-cdk/core';
-import { DjangoEcs } from './index';
-import { StaticSite } from './index';
 import * as acm from '@aws-cdk/aws-certificatemanager';
 import * as route53 from '@aws-cdk/aws-route53';
+import * as cdk from '@aws-cdk/core';
+import { DjangoEcs, StaticSite } from './index';
 
 /**
  * Django and Vue application stack props
@@ -58,8 +57,8 @@ export class DjangoVue extends cdk.Construct {
         domainName: props.domainName,
         hostedZone: route53.HostedZone.fromLookup(scope, 'HostedZone', {
           domainName: props.zoneName,
-        })
-      })
+        }),
+      });
     }
 
     const apiBackend = new DjangoEcs(scope, 'DjangoEcsSample', {
@@ -71,6 +70,14 @@ export class DjangoVue extends cdk.Construct {
       useEcsExec: true,
       frontendUrl: process.env.FRONTEND_URL,
       certificateArn: certificate.certificateArn,
+      environmentVariables: {
+        EMAIL_HOST: process.env.EMAIL_HOST || 'smtp.gmail.com',
+        EMAIL_PORT: process.env.EMAIL_PORT || '1025',
+        EMAIL_HOST_USER: process.env.EMAIL_HOST_USER || 'app@domain.com',
+        EMAIL_HOST_PASSWORD: process.env.EMAIL_HOST_PASSWORD || 'password',
+        // comma separated list of admin email addresses
+        ADMINS: process.env.ADMINS || 'superuser@email.com,admin@email.com,',
+      },
     });
 
     new StaticSite(scope, 'StaticSiteSample', {

src/integ/integ.django-ecs.ts

@@ -19,6 +19,7 @@ const construct = new DjangoEcs(stack, 'DjangoEcsSample', {
   zoneName: process.env.ZONE_NAME,
   useEcsExec: true,
   frontendUrl: process.env.FRONTEND_URL,
+  environmentVariables: { FOO_ENV_VAR: 'foo-env-var' },
 
   // certificateArn: process.env.CERTIFICATE_ARN,
 });