feat: add ssm patching stack (#723)

Signed-off-by: Justin Alvarez <[email protected]>
runfinch · Sep 26, 2024 · 5e39bd7 · 5e39bd7
1 parent 5e6feb5
commit 5e39bd7
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Showing 9 changed files with 137 additions and 6 deletions.
diff --git a/config/runner-config.ts b/config/runner-config.ts
@@ -21,7 +21,7 @@ export interface RunnerType {
   availabilityZones: Array<string>;
 }
 
-export enum PlatformType {
+export const enum PlatformType {
   WINDOWS = 'windows',
   MAC = 'mac',
   AMAZONLINUX = 'amazonlinux',

diff --git a/lib/finch-pipeline-app-stage.ts b/lib/finch-pipeline-app-stage.ts
@@ -10,6 +10,7 @@ import { ContinuousIntegrationStack } from './continuous-integration-stack';
 import { ECRRepositoryStack } from './ecr-repo-stack';
 import { EventBridgeScanNotifsStack } from './event-bridge-scan-notifs-stack';
 import { PVREReportingStack } from './pvre-reporting-stack';
+import { SSMPatchingStack } from './ssm-patching-stack';
 
 export enum ENVIRONMENT_STAGE {
   Beta,
@@ -76,5 +77,7 @@ export class FinchPipelineAppStage extends cdk.Stage {
     }
 
     new PVREReportingStack(this, 'PVREReportingStack', { terminationProtection: true });
+
+    new SSMPatchingStack(this, 'SSMPatchingStack', { terminationProtection: true });
   }
 }
diff --git a/lib/ssm-patching-stack.ts b/lib/ssm-patching-stack.ts
@@ -0,0 +1,56 @@
+import * as cdk from 'aws-cdk-lib';
+import { CfnMaintenanceWindow, CfnMaintenanceWindowTarget, CfnMaintenanceWindowTask } from 'aws-cdk-lib/aws-ssm';
+import { Construct } from 'constructs';
+import { applyTerminationProtectionOnStacks } from './aspects/stack-termination-protection';
+
+export class SSMPatchingStack extends cdk.Stack {
+  constructor(scope: Construct, id: string, props?: cdk.StackProps) {
+    super(scope, id, props);
+    applyTerminationProtectionOnStacks([this]);
+
+    const maintenanceWindow = new CfnMaintenanceWindow(this, 'MaintenanceWindow', {
+      name: `Patching-Window`,
+      allowUnassociatedTargets: false,
+      cutoff: 0,
+      duration: 2,
+      // Every Sunday at 3 AM
+      schedule: 'cron(0 3 ? * SUN *)'
+    });
+
+    const maintenanceTarget = new CfnMaintenanceWindowTarget(this, 'MaintenanceWindowTarget', {
+      name: 'All-Instances-Patch-Target',
+      windowId: maintenanceWindow.ref,
+      resourceType: 'INSTANCE',
+      targets: [
+        {
+          key: 'tag:PVRE-Reporting',
+          values: ['SSM']
+        }
+      ]
+    });
+
+    new CfnMaintenanceWindowTask(this, 'MaintenanceWindowTask', {
+      taskArn: 'AWS-RunPatchBaseline',
+      priority: 1,
+      taskType: 'RUN_COMMAND',
+      windowId: maintenanceWindow.ref,
+      name: 'Patch-Task',
+      targets: [
+        {
+          key: 'WindowTargetIds',
+          values: [maintenanceTarget.ref]
+        }
+      ],
+      taskInvocationParameters: {
+        maintenanceWindowRunCommandParameters: {
+          parameters: {
+            Operation: ['Install']
+          },
+          documentVersion: '$LATEST'
+        }
+      },
+      maxErrors: '0',
+      maxConcurrency: '1'
+    });
+  }
+}
diff --git a/test/artifact-bucket-cloudfront.test.ts b/test/artifact-bucket-cloudfront.test.ts
@@ -1,5 +1,5 @@
 import * as cdk from 'aws-cdk-lib';
-import { Template, Match } from 'aws-cdk-lib/assertions';
+import { Match, Template } from 'aws-cdk-lib/assertions';
 import { ArtifactBucketCloudfrontStack } from '../lib/artifact-bucket-cloudfront';
 
 describe('ArtifactBucketCloudfrontStack', () => {

diff --git a/test/cloudfront_cdn.test.ts b/test/cloudfront_cdn.test.ts
@@ -1,5 +1,5 @@
 import * as cdk from 'aws-cdk-lib';
-import { Template, Match } from 'aws-cdk-lib/assertions';
+import { Match, Template } from 'aws-cdk-lib/assertions';
 import * as s3 from 'aws-cdk-lib/aws-s3';
 import { CfnBucket } from 'aws-cdk-lib/aws-s3';
 import { CloudfrontCdn } from '../lib/cloudfront_cdn';

diff --git a/test/ecr-repo-stack.test.ts b/test/ecr-repo-stack.test.ts
@@ -1,5 +1,5 @@
 import * as cdk from 'aws-cdk-lib';
-import { Template, Match } from 'aws-cdk-lib/assertions';
+import { Match, Template } from 'aws-cdk-lib/assertions';
 import { ECRRepositoryStack } from '../lib/ecr-repo-stack';
 
 describe('ECRRepositoryStack', () => {

diff --git a/test/event-bridge-scan-notifs-stack.test.ts b/test/event-bridge-scan-notifs-stack.test.ts
@@ -1,5 +1,5 @@
 import * as cdk from 'aws-cdk-lib';
-import { Template, Match } from 'aws-cdk-lib/assertions';
+import { Match, Template } from 'aws-cdk-lib/assertions';
 import { EventBridgeScanNotifsStack } from '../lib/event-bridge-scan-notifs-stack';
 
 describe('EventBridgeScanNotifsStack', () => {

diff --git a/test/finch-pipeline-stack.test.ts b/test/finch-pipeline-stack.test.ts
@@ -1,7 +1,7 @@
 import * as cdk from 'aws-cdk-lib';
 import { Template } from 'aws-cdk-lib/assertions';
-import { FinchPipelineStack } from '../lib/finch-pipeline-stack';
 import { EnvConfig } from '../config/env-config';
+import { FinchPipelineStack } from '../lib/finch-pipeline-stack';
 
 describe('FinchPipelineStack', () => {
   test('synthesizes the way we expect', () => {

diff --git a/test/ssm-patching-stack.test.ts b/test/ssm-patching-stack.test.ts
@@ -0,0 +1,72 @@
+import * as cdk from 'aws-cdk-lib';
+import { Template } from 'aws-cdk-lib/assertions';
+import { SSMPatchingStack } from '../lib/ssm-patching-stack';
+
+describe('SSMPatchingStack', () => {
+  test('synthesizes the way we expect', () => {
+    const app = new cdk.App();
+    const ssmPatchingStack = new SSMPatchingStack(app, 'SSMPatchingStack');
+
+    const template = Template.fromStack(ssmPatchingStack);
+
+    template.hasResource('AWS::SSM::MaintenanceWindow', {
+      Properties: {
+        AllowUnassociatedTargets: false,
+        Cutoff: 0,
+        Duration: 2,
+        Name: 'Patching-Window',
+        Schedule: 'cron(0 3 ? * SUN *)'
+      }
+    });
+
+    template.hasResource('AWS::SSM::MaintenanceWindowTarget', {
+      Properties: {
+        Name: 'All-Instances-Patch-Target',
+        ResourceType: 'INSTANCE',
+        Targets: [
+          {
+            Key: 'tag:PVRE-Reporting',
+            Values: ['SSM']
+          }
+        ],
+        WindowId: {
+          Ref: 'MaintenanceWindow'
+        }
+      }
+    });
+
+    template.hasResource('AWS::SSM::MaintenanceWindowTask', {
+      Properties: {
+        MaxConcurrency: '1',
+        MaxErrors: '0',
+        Name: 'Patch-Task',
+        Priority: 1,
+        Targets: [
+          {
+            Key: 'WindowTargetIds',
+            Values: [
+              {
+                Ref: 'MaintenanceWindowTarget'
+              }
+            ]
+          }
+        ],
+        TaskArn: 'AWS-RunPatchBaseline',
+        TaskInvocationParameters: {
+          MaintenanceWindowRunCommandParameters: {
+            Parameters: {
+              Operation: ['Install']
+            },
+            DocumentVersion: '$LATEST'
+          }
+        },
+        TaskType: 'RUN_COMMAND',
+        WindowId: {
+          Ref: 'MaintenanceWindow'
+        }
+      }
+    });
+
+    expect(ssmPatchingStack.terminationProtection).toBeTruthy();
+  });
+});