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aws-asg-suspend-resume.sh
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#! /bin/bash
#
#
# ------------------------------------------------------------------------------------
#
# MIT License
#
# Copyright (c) 2017 Enterprise Group, Ltd.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# ------------------------------------------------------------------------------------
#
# File: aws-asg-suspend-resume.sh
#
script_version=1.0.72
#
# Dependencies:
# - bash shell
# - jq - JSON wrangler https://stedolan.github.io/jq/
# - AWS CLI tools (pre-installed on AWS AMIs)
# - AWS CLI profile with IAM permissions for the following AWS CLI commands:
# * autoscaling describe-auto-scaling-groups
# * autoscaling suspend-processes
# * autoscaling resume-processes
# * sts get-caller-identity
#
#
# Tested on:
# Windows Subsystem for Linux (WSL)
# OS Build: 15063.540
# bash.exe version: 10.0.15063.0
# Ubuntu 16.04
# GNU bash, version 4.3.48(1)
# jq 1.5-1-a5b5cbe
# aws-cli/1.11.134 Python/2.7.12 Linux/4.4.0-43-Microsoft botocore/1.6.1
#
# AWS EC2
# Amazon Linux AMI release 2017.03
# Linux 4.9.43-17.38.amzn1.x86_64
# GNU bash, version 4.2.46(2)
# jq-1.5
# aws-cli/1.11.133 Python/2.7.12 Linux/4.9.43-17.38.amzn1.x86_64 botocore/1.6.0
#
#
# By: Douglas Hackney
# https://github.com/dhackney
#
# Type: AWS utility
# Description:
# This shell script suspends or resumes autoscaling group processes
#
#
# Roadmap:
# * add -r region
# * add -r all regions
#
#
#
###############################################################################
#
# set the environmental variables
#
set -o pipefail
#
###############################################################################
#
# initialize the script variables
#
asg_modify_action=""
asg_modify_action_name=""
autoscaling_group_name=""
choices=""
cli_profile=""
count_asg_modify_process=0
count_cli_profile=0
count_error_lines=0
count_script_version_length=0
count_text_header_length=0
count_text_block_length=0
count_text_width_menu=0
count_text_width_header=0
count_text_side_length_menu=0
count_text_side_length_header=0
count_text_bar_menu=0
count_text_bar_header=0
count_this_file_tasks=0
counter_asg_modify_process=0
counter_report=0
counter_this_file_tasks=0
date_file=="$(date +"%Y-%m-%d-%H%M%S")"
date_now="$(date +"%Y-%m-%d-%H%M%S")"
_empty=""
_empty_task=""
_empty_task_sub=""
error_line_aws=""
error_line_pipeline=""
feed_write_log=""
filebytes_asg_list_asg_modify_process_txt=0
_fill=""
_fill_task=""
_fill_task_sub=""
full_path=""
let_done=""
let_done_task=""
let_done_task_sub=""
let_left=""
let_left_task=""
let_left_task_sub=""
let_progress=""
let_progress_task=""
let_progress_task_sub=""
list_asg_modify_process=""
logging=""
parameter1=""
paramter2=""
text_header=""
text_bar_menu_build=""
text_bar_header_build=""
text_side_menu=""
text_side_header=""
text_menu=""
text_menu_bar=""
text_header=""
text_header_bar=""
this_aws_account=""
this_aws_account_alias=""
this_file=""
this_log=""
thislogdate=""
this_log_file=""
this_log_file_errors=""
this_log_file_errors_full_path=""
this_log_file_full_path=""
this_log_temp_file_full_path=""
this_path=""
this_summary_report=""
this_summary_report_full_path=""
this_user=""
verbose=""
write_path=""
#
###############################################################################
#
#
# load the baseline variables
#
this_utility_acronym="asg"
this_utility_filename_plug="asg-process"
this_path="$(pwd)"
this_file="$(basename "$0")"
full_path="${this_path}"/"$this_file"
this_log_temp_file_full_path="$this_path"/aws-"$this_utility_filename_plug"-log-temp.log
this_user="$(whoami)"
date_file="$(date +"%Y-%m-%d-%H%M%S")"
count_this_file_tasks="$(cat "$full_path" | grep -c "\-\-\- begin\: " )"
counter_this_file_tasks=0
logging="n"
#
###############################################################################
#
# initialize the temp log file
#
echo "" > "$this_log_temp_file_full_path"
#
#
##############################################################################################################33
# Function definition begin
##############################################################################################################33
#
#
# Functions definitions
#
#######################################################################
#
#
# function to display the usage
#
function fnUsage()
{
echo ""
echo " ---------------------------------- AWS Autoscale Suspend / Resume utility usage -------------------------------------"
echo ""
echo " This utility suspends or resumes Autoscaling Group processes "
echo ""
echo " This script will: "
echo " * Suspend the processes in one or more Autoscaling Group(s) "
echo " * Resume the processes in one or more Autoscaling Group(s) "
echo ""
echo "----------------------------------------------------------------------------------------------------------------------"
echo ""
echo " usage:"
echo " aws-asg-suspend-resume.sh -a u -n all -p myAWSCLIprofile "
echo ""
echo " Optional parameters: -b y -g y "
echo ""
echo " Where: "
echo " -a - Modification action to apply - suspend or resume autoscaling. Enter s for suspend or u for resume. "
echo " Example: -a u "
echo ""
echo " -n - Name of the Autoscaling Group(s) to suspend or resume. Enter partial text to match similar "
echo " Autoscaling Group names. Enter 'all' for all Autoscaling Groups."
echo " Example: -n myAutoscalingGroupName "
echo " Example: -n myAuto "
echo " Example: -n all "
echo ""
echo " -p - Name of the AWS CLI cli_profile (i.e. what you would pass to the --profile parameter in an AWS CLI command)"
echo " Example: -p myAWSCLIprofile "
echo ""
echo " -b - Verbose console output. Set to 'y' for verbose console output. Note: verbose mode can be slow."
echo " Example: -b y "
echo ""
echo " -g - Logging on / off. Default is off. Set to 'y' to create a debug log. Note: logging mode can be slower. "
echo " Example: -g y "
echo ""
echo " -h - Display this message"
echo " Example: -h "
echo ""
echo " ---version - Display the script version"
echo " Example: --version "
echo ""
echo ""
exit 1
}
#
#######################################################################
#
#
# function to echo the progress bar to the console
#
# source: https://stackoverflow.com/questions/238073/how-to-add-a-progress-bar-to-a-shell-script
#
# 1. Create ProgressBar function
# 1.1 Input is currentState($1) and totalState($2)
function fnProgressBar()
{
# Process data
let _progress=(${1}*100/"${2}"*100)/100
let _done=(${_progress}*4)/10
let _left=40-"$_done"
# Build progressbar string lengths
_fill="$(printf "%${_done}s")"
_empty="$(printf "%${_left}s")"
#
# 1.2 Build progressbar strings and print the ProgressBar line
# 1.2.1 Output example:
# 1.2.1.1 Progress : [########################################] 100%
printf "\r Overall Progress : [${_fill// /#}${_empty// /-}] ${_progress}%%"
}
#
#######################################################################
#
#
# function to update the task progress bar
#
# source: https://stackoverflow.com/questions/238073/how-to-add-a-progress-bar-to-a-shell-script
#
# 1. Create ProgressBar function
# 1.1 Input is currentState($1) and totalState($2)
function fnProgressBarTask()
{
# Process data
let _progress_task=(${1}*100/"${2}"*100)/100
let _done_task=(${_progress_task}*4)/10
let _left_task=40-"$_done_task"
# Build progressbar string lengths
_fill_task="$(printf "%${_done_task}s")"
_empty_task="$(printf "%${_left_task}s")"
#
# 1.2 Build progressbar strings and print the ProgressBar line
# 1.2.1 Output example:
# 1.2.1.1 Progress : [########################################] 100%
printf "\r Task Progress : [${_fill_task// /#}${_empty_task// /-}] ${_progress_task}%%"
}
#
#######################################################################
#
#
# function to update the subtask progress bar
#
# source: https://stackoverflow.com/questions/238073/how-to-add-a-progress-bar-to-a-shell-script
#
# 1. Create ProgressBar function
# 1.1 Input is currentState($1) and totalState($2)
function fnProgressBarTaskSub()
{
# Process data
let _progress_task_sub=(${1}*100/"${2}"*100)/100
let _done_task_sub=(${_progress_task_sub}*4)/10
let _left_task_sub=40-"$_done_task_sub"
# Build progressbar string lengths
_fill_task_sub="$(printf "%${_done_task_sub}s")"
_empty_task_sub="$(printf "%${_left_task_sub}s")"
#
# 1.2 Build progressbar strings and print the ProgressBar line
# 1.2.1 Output example:
# 1.2.1.1 Progress : [########################################] 100%
printf "\r Sub-Task Progress : [${_fill_task_sub// /#}${_empty_task_sub// /-}] ${_progress_task_sub}%%"
}
#
#######################################################################
#
#
# function to display the task progress bar on the console
#
# parameter 1 = counter
# paramter 2 = count
#
function fnProgressBarTaskDisplay()
{
fnWriteLog ${LINENO} level_0 " ---------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnProgressBarTask "$1" "$2"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " ---------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
}
#
#######################################################################
#
#
# function to display the task progress bar on the console
#
# parameter 1 = counter
# paramter 2 = count
#
function fnProgressBarTaskSubDisplay()
{
fnWriteLog ${LINENO} level_0 " ---------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnProgressBarTaskSub "$1" "$2"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " ---------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
}
#
#######################################################################
#
#
# function to echo the header to the console
#
function fnHeader()
{
clear
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} "--------------------------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} "--------------------------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "$text_header"
fnWriteLog ${LINENO} level_0 ""
fnProgressBar ${counter_this_file_tasks} ${count_this_file_tasks}
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "$text_header_bar"
fnWriteLog ${LINENO} level_0 ""
}
#
#######################################################################
#
#
# function to echo to the console and write to the log file
#
function fnWriteLog()
{
# clear IFS parser
IFS=
# write the output to the console
fnOutputConsole "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9"
# if logging is enabled, then write to the log
if [[ ("$logging" = "y") || ("$logging" = "z") ]] ;
then
# write the output to the log
fnOutputLog "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9"
fi
# reset IFS parser to default values
unset IFS
}
#
#######################################################################
#
#
# function to echo to the console
#
function fnOutputConsole()
{
#
# console output section
#
# test for verbose
if [ "$verbose" = "y" ] ;
then
# if verbose console output then
# echo everything to the console
#
# strip the leading 'level_0'
if [ "$2" = "level_0" ] ;
then
# if the line is tagged for display in non-verbose mode
# then echo the line to the console without the leading 'level_0'
echo " Line: "$1" "$3" "$4" "$5" "$6" "$7" "$8" "$9""
else
# if a normal line echo all to the console
echo " Line: "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9""
fi
else
# test for minimum console output
if [ "$2" = "level_0" ] ;
then
# echo ""
# echo "console output no -v: the logic test for level_0 was true"
# echo ""
# if the line is tagged for display in non-verbose mode
# then echo the line to the console without the leading 'level_0'
echo " "$3" "$4" "$5" "$6" "$7" "$8" "$9""
fi
fi
#
#
}
#
#######################################################################
#
#
# function to write to the log file
#
function fnOutputLog()
{
# log output section
#
# load the timestamp
thislogdate="$(date +"%Y-%m-%d-%H:%M:%S")"
#
# ----------------------------------------------------------
#
# normal logging
#
# append the line to the log variable
# the variable is written to the log file on exit by function fnWriteLogFile
#
# if the script is crashing then comment out this section and enable the
# section below "use this logging for debug"
#
if [ "$2" = "level_0" ] ;
then
# if the line is tagged for logging in non-verbose mode
# then write the line to the log without the leading 'level_0'
this_log+="$(echo "${thislogdate} Line: "$1" "$3" "$4" "$5" "$6" "$7" "$8" "$9"" 2>&1)"
else
# if a normal line write the entire set to the log
this_log+="$(echo "${thislogdate} Line: "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9"" 2>&1)"
fi
#
# append the new line
# do not quote the following variable: $'\n'
this_log+=$'\n'
#
#
# ---------------------------------------------------------
#
# 'use this for debugging' - debug logging
#
# if the script is crashing then enable this logging section and
# comment out the prior logging into the 'this_log' variable
#
# note that this form of logging is VERY slow
#
# write to the log file with a prefix timestamp
# echo "${thislogdate} Line: "$1" "$2" "$3" "$4" "$5" "$6" "$7" "$8" "$9"" 2>&1 >> "$this_log_file_full_path"
#
#
}
#
#######################################################################
#
#
# function to append the log variable to the temp log file
#
function fnWriteLogTempFile()
{
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "Appending the log variable to the temp log file"
fnWriteLog ${LINENO} ""
echo "$this_log" >> "$this_log_temp_file_full_path"
# empty the temp log variable
this_log=""
}
#
#######################################################################
#
#
# function to write log variable to the log file
#
function fnWriteLogFile()
{
# append the temp log file onto the log file
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} "Writing temp log to log file"
fnWriteLog ${LINENO} "Value of variable 'this_log_temp_file_full_path': "
fnWriteLog ${LINENO} "$this_log_temp_file_full_path"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "Value of variable 'this_log_file_full_path': "
fnWriteLog ${LINENO} "$this_log_file_full_path"
fnWriteLog ${LINENO} level_0 ""
# write the contents of the variable to the temp log file
fnWriteLogTempFile
cat "$this_log_temp_file_full_path" >> "$this_log_file_full_path"
echo "" >> "$this_log_file_full_path"
echo "Log end" >> "$this_log_file_full_path"
# delete the temp log file
rm -f "$this_log_temp_file_full_path"
}
#
##########################################################################
#
#
# function to delete the work files
#
function fnDeleteWorkFiles()
{
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "in delete work files "
fnWriteLog ${LINENO} "value of variable 'verbose': "$verbose" "
fnWriteLog ${LINENO} ""
if [ "$verbose" != "y" ] ;
then
# if not verbose console output then delete the work files
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "In non-verbose mode: Deleting work files"
fnWriteLog ${LINENO} ""
feed_write_log="$(rm -f ./"$this_utility_acronym"-* 2>&1)"
fnWriteLog ${LINENO} "$feed_write_log"
feed_write_log="$(rm -f ./"$this_utility_acronym"_* 2>&1)"
fnWriteLog ${LINENO} "$feed_write_log"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable 'this_log_file_full_path' "$this_log_file_full_path" "
fnWriteLog ${LINENO} "$feed_write_log"
fnWriteLog ${LINENO} ""
#
# if no errors, then delete the error log file
count_error_lines="$(cat "$this_log_file_errors_full_path" | wc -l)"
if (( "$count_error_lines" < 3 ))
then
rm -f "$this_log_file_errors_full_path"
fi
else
# in verbose mode so preserve the work files
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "In verbose mode: Preserving work files "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "work files are here: "$this_path" "
fnWriteLog ${LINENO} level_0 ""
fi
}
#
##########################################################################
#
#
# function to log non-fatal errors
#
function fnErrorLog()
{
fnWriteLog ${LINENO} level_0 "-----------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Error message: "
fnWriteLog ${LINENO} level_0 " "$feed_write_log" "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-----------------------------------------------------------------------------------------------------"
echo "-----------------------------------------------------------------------------------------------------" >> "$this_log_file_errors_full_path"
echo "" >> "$this_log_file_errors_full_path"
echo " Error message: " >> "$this_log_file_errors_full_path"
echo " "$feed_write_log"" >> "$this_log_file_errors_full_path"
echo "" >> "$this_log_file_errors_full_path"
echo "-----------------------------------------------------------------------------------------------------" >> "$this_log_file_errors_full_path"
}
#
##########################################################################
#
#
# function to handle command or pipeline errors
#
function fnErrorPipeline()
{
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " System Error while running the previous command or pipeline "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Please check the error message above "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Error at script line number: "$error_line_pipeline" "
fnWriteLog ${LINENO} level_0 ""
if [[ "$logging" == "y" ]] ;
then
fnWriteLog ${LINENO} level_0 " The log will also show the error message and other environment, variable and diagnostic information "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " The log is located here: "
fnWriteLog ${LINENO} level_0 " "$this_log_file_full_path""
fi
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Exiting the script"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-----------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
# append the temp log onto the log file
fnWriteLogTempFile
# write the log variable to the log file
fnWriteLogFile
exit 1
}
#
##########################################################################
#
#
# function for AWS CLI errors
#
function fnErrorAws()
{
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " AWS Error while executing AWS CLI command"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Please check the AWS error message above "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Error at script line number: "$error_line_aws" "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " The log will also show the AWS error message and other diagnostic information "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " The log is located here: "
fnWriteLog ${LINENO} level_0 " "$this_log_file_full_path""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Exiting the script"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "--------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
# append the temp log onto the log file
fnWriteLogTempFile
# write the log variable to the log file
fnWriteLogFile
exit 1
}
#
##########################################################################
#
#
# function for jq errors
#
function fnErrorJq()
{
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Error at script line number: "$error_line_jq" "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " There was a jq error while processing JSON "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Please check the jq error message above "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " The log will also show the jq error message and other diagnostic information "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " The log is located here: "
fnWriteLog ${LINENO} level_0 " "$this_log_file_full_path""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Exiting the script"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "--------------------------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
# append the temp log onto the log file
fnWriteLogTempFile
# write the log variable to the log file
fnWriteLogFile
exit 1
}
#
##########################################################################
#
#
# function to increment the ASG modify process counter
#
function fnCounterIncrementAsgModifyProcess()
{
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "increment the ASG modify process counter: 'counter_asg_modify_process'"
counter_asg_modify_process="$((counter_asg_modify_process+1))"
fnWriteLog ${LINENO} "post-increment value of variable 'counter_asg_modify_process': "$counter_asg_modify_process" "
fnWriteLog ${LINENO} ""
#
}
#
##########################################################################
#
#
# function to increment the task counter
#
function fnCounterIncrementTask()
{
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "increment the task counter"
counter_this_file_tasks="$((counter_this_file_tasks+1))"
fnWriteLog ${LINENO} "value of variable 'counter_this_file_tasks': "$counter_this_file_tasks" "
fnWriteLog ${LINENO} "value of variable 'count_this_file_tasks': "$count_this_file_tasks" "
fnWriteLog ${LINENO} ""
}
#
##########################################################################
#
#
# function to increment the report counter
#
function fnCounterIncrementReport()
{
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "increment the report counter: 'counter_report'"
counter_report="$((counter_report+1))"
fnWriteLog ${LINENO} "post-increment value of variable 'counter_report': "$counter_report" "
fnWriteLog ${LINENO} ""
#
}
#
##############################################################################################################33
# Function definition end
##############################################################################################################33
#
#
###########################################################################################################################
#
#
# enable logging to capture initial segments
#
logging="z"
#
###########################################################################################################################
#
#
# build the menu and header text line and bars
#
text_header='Autoscaling Group Suspend / Resume Utility v'
count_script_version_length=${#script_version}
count_text_header_length=${#text_header}
count_text_block_length=$(( count_script_version_length + count_text_header_length ))
count_text_width_menu=104
count_text_width_header=83
count_text_side_length_menu=$(( (count_text_width_menu - count_text_block_length) / 2 ))
count_text_side_length_header=$(( (count_text_width_header - count_text_block_length) / 2 ))
count_text_bar_menu=$(( (count_text_side_length_menu * 2) + count_text_block_length + 2 ))
count_text_bar_header=$(( (count_text_side_length_header * 2) + count_text_block_length + 2 ))
# source and explanation for the following use of printf is here: https://stackoverflow.com/questions/5799303/print-a-character-repeatedly-in-bash
text_bar_menu_build="$(printf '%0.s-' $(seq 1 "$count_text_bar_menu") )"
text_bar_header_build="$(printf '%0.s-' $(seq 1 "$count_text_bar_header") )"
text_side_menu="$(printf '%0.s-' $(seq 1 "$count_text_side_length_menu") )"
text_side_header="$(printf '%0.s-' $(seq 1 "$count_text_side_length_header") )"
text_menu="$(echo "$text_side_menu"" ""$text_header""$script_version"" ""$text_side_menu")"
text_menu_bar="$(echo "$text_bar_menu_build")"
text_header="$(echo " ""$text_side_header"" ""$text_header""$script_version"" ""$text_side_header")"
text_header_bar="$(echo " ""$text_bar_header_build")"
#
###########################################################################################################################
#
#
# display initializing message
#
clear
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "$text_header"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " This utility suspends or resumes AWS AutoScaling Group processes "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " This script will: "
fnWriteLog ${LINENO} level_0 " - Suspend or resume the processes for Autoscaling Groups "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "$text_header_bar"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Please wait "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Checking the input parameters and initializing the app "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Depending on connection speed and AWS API response, this can take "
fnWriteLog ${LINENO} level_0 " from a few seconds to a few minutes "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Status messages and opening menu will appear below"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "$text_header_bar"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
#
#
###################################################
#
#
# check command line parameters
# check for -h
#
if [[ "$1" = "-h" ]] ; then
clear
fnUsage
fi
#
###################################################
#
#
# check command line parameters
# check for --version
#
if [[ "$1" = "--version" ]] ;
then
clear
echo ""
echo "'AWS Autoscaling Group Suspend / Resume' utility script version: "$script_version" "
echo ""
exit
fi
#
###################################################
#
#
# check command line parameters
# if less than 2, then display the usage
#
if [[ "$#" -lt 6 ]] ; then
clear
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " ERROR: You did not enter all of the required parameters "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " You must provide values for all three parameters: -p -a -n "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Example: "$0" -p MyProfileName -a s -n myAutoscalingGroupName "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnUsage
fi
#
###################################################
#
#
# check command line parameters
# if too many parameters, then display the error message and useage
#
if [[ "$#" -gt 10 ]] ; then
clear
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " ERROR: You entered too many parameters"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " You must provide only one value for all parameters: -p -a -n -b -g "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Example: "$0" -p MyProfileName -a r -n all -b y -g y "
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "-------------------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnUsage
fi
#
###################################################
#
#
# parameter values
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable '@': "$@" "
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of parameter '1' "$1" "
fnWriteLog ${LINENO} "value of parameter '2' "$2" "
fnWriteLog ${LINENO} "value of parameter '3' "$3" "
fnWriteLog ${LINENO} "value of parameter '4' "$4" "
fnWriteLog ${LINENO} "value of parameter '5' "$5" "
fnWriteLog ${LINENO} "value of parameter '6' "$6" "
#
###################################################
#
#
# load the main loop variables from the command line parameters
#
while getopts "p:a:n:b:g:h" opt;
do
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable '@': "$@" "
fnWriteLog ${LINENO} "value of variable 'opt': "$opt" "
fnWriteLog ${LINENO} "value of variable 'OPTIND': "$OPTIND" "
fnWriteLog ${LINENO} ""
#
case "$opt" in
p)
cli_profile="$OPTARG"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of -p 'cli_profile': "$cli_profile" "
;;
a)
asg_modify_action="$OPTARG"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of -a 'asg_modify_action': "$asg_modify_action" "
;;
n)
autoscaling_group_name="$OPTARG"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of -n 'autoscaling_group_name': "$autoscaling_group_name" "
;;
b)
verbose="$OPTARG"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of -b 'verbose': "$verbose" "
;;
g)
logging="$OPTARG"
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of -g 'logging': "$logging" "
;;
h)
fnUsage
;;
\?)
clear
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "---------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " ERROR: You entered an invalid option."
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 " Invalid option: -"$OPTARG""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 ""
fnWriteLog ${LINENO} level_0 "---------------------------------------------------------------------"
fnWriteLog ${LINENO} level_0 ""
fnUsage
;;
esac
done
#
###################################################
#
#
# check logging variable
#
#
###################################################
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable '@': "$@" "
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable 'logging': "$logging" "
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "if logging not enabled by parameter, then disabling logging "
if [[ "$logging" != "y" ]] ;
then
logging="n"
fi
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable 'logging': "$logging" "
fnWriteLog ${LINENO} ""
#
# parameter values
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "value of variable 'cli_profile' "$cli_profile" "
fnWriteLog ${LINENO} "value of variable 'verbose' "$verbose" "
fnWriteLog ${LINENO} "value of variable 'logging' "$logging" "
#
###################################################
#
#
# disable logging if not set by the -g parameter
#
if [[ "$logging" != "y" ]] ;
then
logging="n"
fi
#
###################################################
#
#
# check command line parameters
# check for valid AWS CLI profile
#
fnWriteLog ${LINENO} ""
fnWriteLog ${LINENO} "count the available AWS CLI profiles that match the -p parameter profile name "
count_cli_profile="$(cat /home/"$this_user"/.aws/config | grep -c "$cli_profile")"
# if no match, then display the error message and the available AWS CLI profiles
if [[ "$count_cli_profile" -ne 1 ]]
then