unused aws instace and vpcs cleanup

Signed-off-by: shiva kumar <[email protected]>

Author: shivakunv

.github/workflows/awscleanup.yaml

@@ -0,0 +1,90 @@
+name: Daily AWS Cleanup Bot
+
+# on:
+#   schedule:
+#     - cron: '0 8 * * *'
+
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+    branches:
+      - awsresourcecleanup
+  push:
+    branches:
+      - awsresourcecleanup
+
+jobs:
+  cleanup:
+    runs-on: linux-amd64-cpu4
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up AWS CLI
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: us-west-1
+
+      - name: Identify resources running longer than 4 hours
+        id: identify-resources
+        run: |
+          # Find EC2 instances with names ci* running longer than 4 hours
+          running_instances=$(aws ec2 describe-instances \
+            --filters Name=instance-state-name,Values=running Name=tag:Name,Values=ci* \
+            --query "Reservations[*].Instances[?LaunchTime<=\`$(date -u -d '4 hours ago' +%Y-%m-%dT%H:%M:%SZ)\`].InstanceId" \
+            --output text | tr -d '\r' | tr '\n' ' ')
+          echo "Found instances: $running_instances"
+          echo "instances=$running_instances" >> $GITHUB_ENV
+
+          # Find vpcs with names ci*
+          # vpc does not have creation/launch time,try to delete all vpcs
+          # if there is any resource dependency it will not be deleted and only gives warning
+          vpcs=$(aws ec2 describe-vpcs \
+            --filters "Name=tag:Name,Values=ci*" \
+            --query "Vpcs[].VpcId" \
+            --output text | tr -d '\r' | tr '\n' ' ')
+
+          echo "Found VPCs: $vpcs"
+          echo "vpcs=$vpcs" >> $GITHUB_ENV
+
+      - name: Terminate EC2 Instances
+        if: env.instances != ''
+        run: |
+          for instance in $instances; do
+            echo "Terminating instance: $instance"
+            aws ec2 terminate-instances --instance-ids "$instance"
+          done
+
+      - name: Clean up VPCs
+        if: env.vpcs != ''
+        run: |
+          for vpc in $vpcs; do
+            attempts=0
+            # try 3 times with 5 minutes interval
+            while [ $attempts -lt 3 ]; do
+              echo "Attempting to delete VPC: $vpc (Attempt $((attempts+1)))"
+              if aws ec2 delete-vpc --vpc-id "$vpc"; then
+                echo "Successfully deleted VPC: $vpc"
+                break
+              else
+                attempts=$((attempts + 1))
+                if [ $attempts -lt 3 ]; then
+                  echo "Failed to delete VPC: $vpc. Retrying in 5 minutes..."
+                  sleep 300
+                fi
+              fi
+            done
+
+            if [ $attempts -eq 3 ]; then
+              echo "Failed to delete VPC: $vpc after 3 attempts. Skipping."
+            fi
+          done
+
+      - name: Post cleanup
+        run: |
+          echo "Cleanup completed."