waf

#!/bin/bash
###############################################################################
#   Copyright 2016 Cerbo.IO, LLC.
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
###############################################################################

function usage() {
    echo "Usage: $0 <customer> <s3-logs-bucket> <command>"
    echo 
    echo "<command> Options:"
    echo -e "\tcreate = create a new WAF setup for <customer>"
    echo -e "\tdelete = delete a given <customer> WAF setup"
    echo
    echo "Example: $0 cerbo s3-bucket-name create"
    echo "Example: $0 customer01 s3-bucket-name delete"
}


if [ $# -ne 3 ]; then
    usage
    exit
fi

cp -f .template.main.tf main.tf

PROJECT=""
S3=""


if [ $# -eq 0 ]; then
    echo "#############################################"
    echo "# NOTE: Please use only up to 15 characters #"
    echo "#############################################"
    echo
    read -p "[REQUIRED] Please enter Customer/Project name: " PROJECT
    echo
    echo
    read -p "[REQUIRED] CDN S3 Logs Bucket: " S3
else
    PROJECT=$1;
    S3=$2;
fi

sed -i -e "s/cerboXYZcerbo/$PROJECT/" main.tf
sed -i -e "s/cerboZYXcerbo/$S3/" main.tf

# NOTE: "-parallelism=1" is needed until Terraform fixes a nasty bug
# https://github.com/hashicorp/terraform/issues/10335

# UPDATE: fixed in version 0.9.4, but actually keeping it helps with
# AWS API gateway race condition which does not properly support
# dependencies.

if [ $3 == "create" ]; then
    mkdir -p env/$PROJECT
    terraform apply -parallelism=1 -state=env/$PROJECT/terraform.tfstate
elif [ $3 == "delete" ]; then
    echo "##############################"
    echo "# WARNING! WARNING! WARNING! #"
    echo "##############################"
    echo
    terraform destroy -parallelism=1 -state=env/$PROJECT/terraform.tfstate
else
    echo "Invalid Command: $3"
    echo
    usage
fi