For gradle projects! Convenience script to build, pack and upload code to an AWS Lambda function, using the AWS CLI. For personal and experimental use only!

lambda-publish.sh

#!/usr/bin/env bash
#title          : lambda-publish.sh
#description    : For gradle or mvn projects! Convenience script to build, pack and upload code to an AWS Lambda function, using the AWS CLI. For personal and experimental use only!
#author         : Christian-André Giehl <christian@emailbrief.de>
#date           : 20170410
#version        : 1.1
#usage          : sh lambda-publish.sh
#==============================================================================

# Exits in case the supplied state is != 0. State is typically supplied via $?
exitOnError() {
    state=$1
    msg=$2
    if [ $state -ne 0 ]; then
        echo "!!! ${msg}"
        echo "### Exiting."
        exit $state
    fi
}

# Check is AWS CLI is there
command -v aws
exitOnError $? "AWS CLI not found or not accessible!"

#
# AWS cfg
#
ARN=arn:aws:lambda:eu-central-1:someId:function:someFunction
PROFILE=internal-user # make sure profile exists in ~/.aws/config
REGION=eu-central-1

useMaven=true # or e.g. [[ -e "pom.xml" ]]
if [ useMaven ]
then
    echo "### Starting mvn..."
    mvn clean package
    JAR=$(find ./target -iname *-jar-with-dependencies.jar -print -quit)
else
    echo "### Starting gradle..."
    ./gradlew clean test fatJar
    JAR=$(find ./build -iname *.jar -print -quit)
fi
exitOnError $? "Unable to build!"

if [ -z "${JAR}" ]; then
    echo "JAR-file could not be found (yields: '${JAR}'. Stopping..."
    exit 1
fi

echo "### Using file '${JAR}' to deploy to lambda..."

read -p "-----> DO YOU REALLY WANT TO DEPLOY? [Yy]es " -n 1 -r
if ! [[ $REPLY =~ ^[Yy]$ ]]
then
    echo "!!! ABORTED !!!"
    exit 1
fi

#
# Deploy!
#
aws --profile ${PROFILE} \
--region ${REGION} \
lambda update-function-code \
--function-name ${ARN} \
--zip-file fileb://${JAR} \
--publish
exitOnError $? "Deployment failed!"

echo "### Done!"