環境変数もデプロイできるように

Author: to-higashiguchi

.github/workflows/deploy_lambda.yml

@@ -32,6 +32,31 @@ jobs:
       - name: Build
         run: pip install -r requirements.txt
 
+      - name: Load environment variables from .env file
+        id: load-env
+        run: |
+          if [ -f .env ]; then
+            echo "Loading environment variables from .env file"
+            # .envファイルから環境変数を読み取りJSON形式に変換
+            env_json="{"
+            while IFS='=' read -r key value || [ -n "$key" ]; do
+              # コメント行と空行をスキップ
+              if [[ "$key" =~ ^#.*$ ]] || [[ -z "$key" ]]; then
+                continue
+              fi
+              # 値をクォートで囲んでJSONに追加
+              if [ -n "$env_json" ] && [ "$env_json" != "{" ]; then
+                env_json="$env_json,"
+              fi
+              env_json="$env_json\"$key\":\"$value\""
+            done < .env
+            env_json="$env_json}"
+            echo "env-vars=$env_json" >> $GITHUB_OUTPUT
+          else
+            echo "No .env file found, using default environment variables"
+            echo 'env-vars={"ENVIRONMENT":"production","LOG_LEVEL":"info","PYTHON_VERSION":"${{ env.PYTHON_VERSION }}"}' >> $GITHUB_OUTPUT
+          fi
+
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
         with:
@@ -48,3 +73,4 @@ jobs:
           runtime: python${{ env.PYTHON_VERSION }}
           role: ${{ env.lambda-role-arn }}
           dry-run: false
+          environment-variables: ${{ steps.load-env.outputs.env-vars }}

hello_lambda/.env

@@ -0,0 +1,5 @@
+# Lambda環境変数設定例
+ENVIRONMENT=production
+LOG_LEVEL=info
+DEBUG=false
+APP_NAME=hello_lambda_actions

hello_lambda/app.py

@@ -1,12 +1,21 @@
 import json
+import os
 
 
 def lambda_handler(event, context):
+    # 環境変数を取得
+    environment = os.environ.get("ENVIRONMENT", "development")
+    log_level = os.environ.get("LOG_LEVEL", "debug")
+    app_name = os.environ.get("APP_NAME", "hello_lambda")
+
     return {
         "statusCode": 200,
         "body": json.dumps(
             {
                 "message": "hello_world",
+                "environment": environment,
+                "log_level": log_level,
+                "app_name": app_name,
             }
         ),
     }