AWS Helpers functions

aws-helpers.sh

# AWS Helpers functions
#
# prerequisites:
# - awscli
# - jq

# parse aws arn
parse_arn() {
    echo $1 | sed 's/\"//g;s/^.*\///'
}

# get hostname from instance tag name
hostname_from_instance() {
    echo $(aws ec2 describe-instances --filters "{\"Name\":\"tag:Name\", \"Values\":[\"$1\"]}" --query='Reservations[0].Instances[0].PublicDnsName' | tr -d '"')
}

# get ip from instance tag name
ip_from_instance() {
    echo $(aws ec2 describe-instances --filters "{\"Name\":\"tag:Name\", \"Values\":[\"$1\"]}" --query='Reservations[0].Instances[0].PublicIpAddress' | tr -d '"')
}

# ssh to instance using tag name
ssh_aws() {
    ssh $(hostname_from_instance $1)
}

# get cloudformation stack status
stack_status() {
    aws cloudformation describe-stacks --stack-name $1 | jq '.Stacks[0].StackStatus'
}

# get cloudformation stacks and status
stacks() {
    stacks=$(aws cloudformation list-stacks --stack-status-filter CREATE_IN_PROGRESS CREATE_COMPLETE ROLLBACK_IN_PROGRESS ROLLBACK_FAILED ROLLBACK_COMPLETE DELETE_IN_PROGRESS DELETE_FAILED UPDATE_IN_PROGRESS UPDATE_COMPLETE_CLEANUP_IN_PROGRESS UPDATE_COMPLETE UPDATE_ROLLBACK_IN_PROGRESS UPDATE_ROLLBACK_FAILED UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS UPDATE_ROLLBACK_COMPLETE REVIEW_IN_PROGRESS --query 'StackSummaries[*].[StackStatus,StackName]' --output text | sort -k 2 | column -t)
    if [[ $# -ge 1 ]]
    then
        echo $stacks | grep -i $1
    else
        echo $stacks | less -FS
    fi
}

# get cloudformation stack resources and status
stack_resources() {
    aws cloudformation describe-stack-resources --stack-name $1 --query 'StackResources[*].[ResourceStatus,ResourceType,LogicalResourceId,PhysicalResourceId]' --output text | sort -k2 | column -t | less -FS
}

# get cloudformation stack parameters
stack_params() {
    aws cloudformation describe-stacks --stack-name $1 --query 'Stacks[*].Parameters[*].[ParameterKey,ParameterValue]' #--output text | sort | column -t
}

# get cloudformation stack outputs
stack_outputs() {
    aws cloudformation describe-stacks --stack-name $1 --query 'Stacks[*].Outputs[*].[OutputKey,OutputValue]' --output text | sort | column -t
}

# get ecs clusters
ecs_clusters() {
    clusters="
        for c in $(aws ecs list-clusters | jq .clusterArns[])
        do
            parse_arn $c
        done)"
    if [[ $# -ge 1 ]]
    then
        echo $clusters | sed 's/ /\n/g' | grep -i $1
    else
        echo $clusters | sed 's/ /\n/g'
    fi
}

# get ecs services from cluster
ecs_services() {
   services="
        for s in $(aws ecs list-services --cluster $1 | jq .serviceArns[])
        do
            parse_arn $s
        done)"
    if [[ $# -ge 2 ]]
    then
        echo $services | sed 's/ /\n/g;s/\"//' | grep -i $2
    else
        echo $services | sed 's/ /\n/g;s/\"//'
    fi
}

# get ecs tasks from cluster and service name
ecs_service_tasks() {
    aws ecs list-tasks --cluster $1 --service-name $2
}

# stop ecs task from cluster and service name
ecs_stop_task() {
    aws ecs stop-task --cluster $1 --task $2
}