Standardize region handling for Global Accelerator

Author: mwunderl

tuts/145-aws-globalaccelerator-gs/aws-globalaccelerator-gs.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 WORK_DIR=$(mktemp -d); exec > >(tee -a "$WORK_DIR/ga.log") 2>&1
-export AWS_DEFAULT_REGION=us-west-2; echo "Region: us-west-2 (Global Accelerator)"
+REGION=us-west-2  # Global Accelerator requires us-west-2
+export AWS_DEFAULT_REGION="$REGION"; export AWS_REGION="$REGION"; echo "Region: $REGION (Global Accelerator)"
 RANDOM_ID=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 8 | head -n 1); GA_NAME="tut-ga-${RANDOM_ID}"
 handle_error() { echo "ERROR on line $1"; trap - ERR; cleanup; exit 1; }; trap 'handle_error $LINENO' ERR
 cleanup() { echo ""; echo "Cleaning up..."; [ -n "$GA_ARN" ] && { aws globalaccelerator update-accelerator --accelerator-arn "$GA_ARN" --no-enabled 2>/dev/null; sleep 5; aws globalaccelerator delete-accelerator --accelerator-arn "$GA_ARN" 2>/dev/null && echo "  Deleted accelerator"; }; rm -rf "$WORK_DIR"; echo "Done."; }