adding script cutover.sh to allow manual cutover from blue to green environment

Author: Elliot

Dockerfile

@@ -8,8 +8,8 @@ RUN pip3 install --no-cache --upgrade boto3
 
 ADD src .
 
-RUN chmod +x deploy.sh task-deploy.sh run-task.sh tail-task-logs.py
+RUN chmod +x deploy.sh task-deploy.sh run-task.sh cutover.sh tail-task-logs.py
 
 ENTRYPOINT [ "/bin/bash", "-c" ]
 
-CMD [ "/work/deploy.sh" ]
+CMD [ "/work/deploy.sh" ]

src/cutover.sh

@@ -0,0 +1,31 @@
+#!/bin/bash -e
+
+ERROR=0
+if [[ -z "$AWS_DEFAULT_REGION" ]]; then echo "---> ERROR: Missing variable AWS_DEFAULT_REGION"; ERROR=1; fi
+if [[ -z "$APP_NAME" ]];           then echo "---> ERROR: Missing variable APP_NAME"; ERROR=1; fi
+if [[ -z "$CLUSTER_NAME" ]];       then echo "---> ERROR: Missing variable CLUSTER_NAME"; ERROR=1; fi
+if [[ -z "$CONTAINER_PORT" ]];     then echo "---> ERROR: Missing variable CONTAINER_PORT"; ERROR=1; fi
+if [[ -z "$IMAGE_NAME" ]];         then echo "---> ERROR: Missing variable IMAGE_NAME"; ERROR=1; fi
+if [[ "$ERROR" == "1" ]]; then exit 1; fi
+
+# Fetch deployment ID pending cutover to the green(new) enviroment
+DEPLOYMENT_ID=$(aws deploy list-deployments --application-name=$CLUSTER_NAME-$APP_NAME --deployment-group=$CLUSTER_NAME-$APP_NAME --max-items=1 --query="deployments[0]" --output=text | head -n 1)
+
+DEPLOYMENT_PID=$!
+
+#echo "---> For More Deployment info: https://$AWS_DEFAULT_REGION.console.aws.amazon.com/codesuite/codedeploy/deployments/$DEPLOYMENT_ID"
+
+#echo "---> Waiting for Deployment ..."
+
+aws deploy continue-deployment --deployment-id $DEPLOYMENT_ID --deployment-wait-type "READY_WAIT"
+
+wait $DEPLOYMENT_PID
+RET=$?
+
+if [ $RET -eq 0 ]; then
+  echo "---> Deployment completed!"
+else
+  echo "---> ERROR: Deployment FAILED!"
+fi
+
+exit $RET