aptoffline-downloader

README.md

Usage

Given an apt-offline.sig file, launch an AWS EC2 instance to download the corresponding packages and upload the resulting bundle to the configured S3 bucket:

$ download-apt-packages apt-offline.sig

download-apt-packages

#! /bin/bash

(( $# < 1 )) && { 1>&2 echo "Syntax: $0 <apt-offline.sig>" ; exit 1 ; }

KEY_NAME=romuloceccon@gmail.com
IMAGE_ID=ami-de8fb135
SUBNET_ID=subnet-83148dce
SECURITY_GROUP_IDS=sg-03b9799b5d1b185c1
INSTANCE_TYPE=t2.micro
IAM_PROFILE=s3-sns-full-access

ARG_SIG_FILE="$1"

interpolate-vars() {
  ARGS=("$@")
  echo "APTOFFLINE_SIG=\"$(cat ${ARG_SIG_FILE} | gzip - | base64 -w0)\""| python <(cat <<'EOF'
import sys

data = sys.stdin.read()
with open(sys.argv[1]) as f:
    section = 0
    while True:
        line = f.readline()
        if not line:
            break
        if line.find('--CUT--') != -1:
            section += 1
            if section == 1:
                sys.stdout.write(data)
        elif section != 1:
            sys.stdout.write(line)
EOF
) "${ARGS[@]}"
}

interpolate-vars init.sh > init.sh.tmp

aws ec2 run-instances \
    --key-name ${KEY_NAME} \
    --associate-public-ip-address \
    --instance-initiated-shutdown-behavior terminate \
    --image-id ${IMAGE_ID} \
    --subnet-id ${SUBNET_ID} \
    --security-group-ids ${SECURITY_GROUP_IDS} \
    --instance-type ${INSTANCE_TYPE} \
    --iam-instance-profile Name=${IAM_PROFILE} \
    --count 1 \
    --user-data file://init.sh.tmp

init.sh

#! /bin/bash

set -x

S3_REGION=eu-central-1
S3_BUCKET=romuloceccon
SNS_TOPIC="arn:aws:sns:eu-central-1:447480018313:aptoffline-completed"

# --CUT-- begin custom section
APTOFFLINE_SIG="Cg=="
# --CUT-- end custom section

WORKDIR="/root/download"
SIG_FILE="${WORKDIR}/apt-offline.sig"
BUNDLE_BASENAME="apt-offline-bundle-$(date -u +%Y%m%d%H%M).zip"
BUNDLE_NAME="${WORKDIR}/${BUNDLE_BASENAME}"
SUBJECT="S3 file ${BUNDLE_BASENAME}"

mkdir -p ${WORKDIR}
echo "${APTOFFLINE_SIG}"| base64 -d | gzip -d - > ${SIG_FILE}

apt-get update
apt-get install -y apt-offline awscli

aws configure set region ${S3_REGION}

apt-offline get --bundle ${BUNDLE_NAME} ${SIG_FILE}

aws s3 cp ${BUNDLE_NAME} s3://${S3_BUCKET}/ --storage-class STANDARD_IA
S3_RESULT="$?"
BUNDLE_SIZE=$(stat -c %s ${BUNDLE_NAME})
aws sns publish --topic-arn ${SNS_TOPIC} --subject "${SUBJECT}" --message \
    $'file size: '${BUNDLE_SIZE}$'\naws s3 cp result: '${S3_RESULT}
shutdown -h now

exit 0