cfn: switch Forgejo pipeline to EventBridge-triggered S3 source

- Rename forgejo.yaml to forgejo-cl.yaml
- Make S3 bucket and IAM ARNs region-agnostic
- Disable CodePipeline S3 polling
- Enable S3 → EventBridge notifications
- Add EventBridge rule and IAM role to trigger pipeline on object creation
- Tighten IAM permissions for CodeBuild and CodePipeline
- Normalize file mode for forgejo-efs.yaml

infra/cfn/forgejo-cl.yaml

@@ -16,18 +16,19 @@ Parameters:
 
 Resources:
 
-  # S3 Bucket (Source)
   SourceBucket:
     Type: AWS::S3::Bucket
     Properties:
-      BucketName: !Sub "ap-northeast-1-${AWS::AccountId}-${SourceBucketName}"
+      BucketName: !Sub "${AWS::Region}-${AWS::AccountId}-${SourceBucketName}"
       Tags:
         - Key: Project
           Value: Git-server
       VersioningConfiguration:
         Status: Enabled
+      NotificationConfiguration:
+        EventBridgeConfiguration:
+          EventBridgeEnabled: true
 
-  # ECR Repository
   ForgejoRepository:
     Type: AWS::ECR::Repository
     Properties:
@@ -35,7 +36,6 @@ Resources:
       ImageScanningConfiguration:
         ScanOnPush: true
 
-  # IAM Role for CodeBuild
   CodeBuildRole:
     Type: AWS::IAM::Role
     Properties:
@@ -76,13 +76,12 @@ Resources:
                   - s3:PutObject
                   - s3:ListBucket
                 Resource:
-                  - !Sub "arn:aws:s3:::codebuild-ap-northeast-1-${AWS::AccountId}-input-bucket"
-                  - !Sub "arn:aws:s3:::codebuild-ap-northeast-1-${AWS::AccountId}-input-bucket/*"
-                  - !Sub "arn:aws:s3:::ap-northeast-1-${AWS::AccountId}-${SourceBucketName}"
-                  - !Sub "arn:aws:s3:::ap-northeast-1-${AWS::AccountId}-${SourceBucketName}/*"
+                  - !Sub "arn:aws:s3:::codebuild-${AWS::Region}-${AWS::AccountId}-input-bucket"
+                  - !Sub "arn:aws:s3:::codebuild-${AWS::Region}-${AWS::AccountId}-input-bucket/*"
+                  - !Sub "arn:aws:s3:::${AWS::Region}-${AWS::AccountId}-${SourceBucketName}"
+                  - !Sub "arn:aws:s3:::${AWS::Region}-${AWS::AccountId}-${SourceBucketName}/*"
 
 
-  # CodeBuild Project (ARM)
   ForgejoBuildProject:
     Type: AWS::CodeBuild::Project
     Properties:
@@ -101,7 +100,6 @@ Resources:
         Type: CODEPIPELINE
       TimeoutInMinutes: 30
 
-  # IAM Role for CodePipeline
   CodePipelineRole:
     Type: AWS::IAM::Role
     Properties:
@@ -117,9 +115,11 @@ Resources:
           PolicyDocument:
             Version: '2012-10-17'
             Statement:
-              # Permissions for accessing the artifacts bucket
               - Effect: Allow
                 Action:
+                  - s3:GetBucketAcl
+                  - s3:GetObjectTagging
+                  - s3:GetObjectVersionTagging
                   - s3:GetObject
                   - s3:GetObjectVersion
                   - s3:PutObject
@@ -127,23 +127,23 @@ Resources:
                   - s3:GetBucketLocation
                   - s3:GetBucketVersioning
                 Resource:
-                  - !Sub "arn:aws:s3:::codebuild-ap-northeast-1-${AWS::AccountId}-input-bucket"
-                  - !Sub "arn:aws:s3:::codebuild-ap-northeast-1-${AWS::AccountId}-input-bucket/*"
-                  - !Sub "arn:aws:s3:::ap-northeast-1-${AWS::AccountId}-${SourceBucketName}"
-                  - !Sub "arn:aws:s3:::ap-northeast-1-${AWS::AccountId}-${SourceBucketName}/*"
-              # Permissions for CodeBuild (if used)
+                  - !Sub "arn:aws:s3:::codebuild-${AWS::Region}-${AWS::AccountId}-input-bucket"
+                  - !Sub "arn:aws:s3:::codebuild-${AWS::Region}-${AWS::AccountId}-input-bucket/*"
+                  - !Sub "arn:aws:s3:::${AWS::Region}-${AWS::AccountId}-${SourceBucketName}"
+                  - !Sub "arn:aws:s3:::${AWS::Region}-${AWS::AccountId}-${SourceBucketName}/*"
               - Effect: Allow
                 Action:
                   - codebuild:StartBuild
                   - codebuild:BatchGetBuilds
-                Resource: "*"
-              # Permissions for manual approval actions in CodePipeline
+                Resource:
+                  - !Sub "arn:aws:codebuild:${AWS::Region}:${AWS::AccountId}:build/*"
+                  - !Sub "arn:aws:codebuild:${AWS::Region}:${AWS::AccountId}:project/*"
               - Effect: Allow
                 Action:
                   - codepipeline:PutApprovalResult
-                Resource: "*"
+                  - codepipeline:StartPipelineExecution
+                Resource: !Sub "arn:aws:codepipeline:${AWS::Region}:${AWS::AccountId}:*"
 
-  # CodePipeline
   ForgejoPipeline:
     Type: AWS::CodePipeline::Pipeline
     Properties:
@@ -164,7 +164,7 @@ Resources:
               Configuration:
                 S3Bucket: !Ref SourceBucket
                 S3ObjectKey: !Ref SourceObjectKey
-                PollForSourceChanges: true
+                PollForSourceChanges: false
               OutputArtifacts:
                 - Name: SourceOutput
         - Name: Build
@@ -179,3 +179,44 @@ Resources:
                 - Name: SourceOutput
               Configuration:
                 ProjectName: !Ref ForgejoBuildProject
+
+  S3SourceChangeRule:
+    Type: AWS::Events::Rule
+    Properties:
+      Description: Trigger CodePipeline on S3 source update
+      EventPattern:
+        source:
+          - aws.s3
+        detail-type:
+          - Object Created
+        detail:
+          bucket:
+            name:
+              - !Ref SourceBucket
+          object:
+            key:
+              - !Ref SourceObjectKey
+      Targets:
+        - Arn: !Sub arn:aws:codepipeline:${AWS::Region}:${AWS::AccountId}:${ForgejoPipeline}
+          RoleArn: !GetAtt EventBridgeInvokePipelineRole.Arn
+          Id: CodePipelineTarget
+
+  EventBridgeInvokePipelineRole:
+    Type: AWS::IAM::Role
+    Properties:
+      AssumeRolePolicyDocument:
+        Version: '2012-10-17'
+        Statement:
+          - Effect: Allow
+            Principal:
+              Service: events.amazonaws.com
+            Action: sts:AssumeRole
+      Policies:
+        - PolicyName: AllowStartPipeline
+          PolicyDocument:
+            Version: '2012-10-17'
+            Statement:
+              - Effect: Allow
+                Action:
+                  - codepipeline:StartPipelineExecution
+                Resource: !Sub arn:aws:codepipeline:${AWS::Region}:${AWS::AccountId}:${ForgejoPipeline}