SyncM8/syncm8

#!/bin/bash

AWS_KEYS=(AWS_ACCESS_KEY_ID AWS_SECRET_ACCESS_KEY AWS_DEFAULT_REGION)
EXTERNAL_KEYS=(DEV_SENDGRID_API_KEY)
DEV_ECR_REPO="public.ecr.aws/a5f0m6q3/syncm8_dev"
DEVBOX_VERSION=$(cat DEVBOX_VERSION)

# Read value for specified key fron dev.env
# args:
#   1: Name of key to read
#   2: Name of variable to set "$key=$value"
getKeyValFromDevEnv(){
    local key=$1
    local _res=$2
    local value=$(cat dev.env | grep $key)
    eval $_res="'$value'"
}

# Set all the values for aws keys
# Only available inside the subshell
addAWSToEnv(){
    for key in ${AWS_KEYS[@]}; do
        getKeyValFromDevEnv $key keyValPair
        export $keyValPair
    done
}

# Authenticate docker with aws ecr
dockerLogin(){
    addAWSToEnv
    local command="aws ecr-public get-login-password --region us-east-1 | docker login --username AWS --password-stdin public.ecr.aws"
    bin/util logAndRun $command
}

# Push dev image to aws ecr
# Must be authenticated with ecr
dockerPush(){
    bin/util logAndRun "docker push $DEV_ECR_REPO:$DEVBOX_VERSION"
}

# Pull image from aws ecr
dockerPull(){
    dockerLogin
    bin/util logAndRun "docker pull $DEV_ECR_REPO:$DEVBOX_VERSION"
}

# Build dev image
dockerBuild(){
    bin/util logAndRun "docker build --target dev --pull --rm -t $DEV_ECR_REPO:$DEVBOX_VERSION - < Dockerfile"
}

# Pulls secrets from AWS Parameter Store
pullEnv(){
    # load aws env for authentication to parameter store
    addAWSToEnv

    # create new file
    echo "" > new.dev.env

    # copy aws keys from dev.env to new.dev.env
    for key in ${AWS_KEYS[@]}; do
        getKeyValFromDevEnv $key keyValPair
        echo $keyValPair >> new.dev.env
    done

    # acquire keys from aws parameter store
    for ac in ${EXTERNAL_KEYS[@]}; do
        ret=$(aws ssm get-parameter --name $ac)
        value=$(echo $ret | perl -nle'print $& while m{"Value":.*?[^\\]",}g'| cut -d \" -f4)
        key=$(echo $ac| cut -d _ -f2-)
        echo $key=$value >> new.dev.env
    done

    # replace contents of dev.env with new.dev.env
    mv new.dev.env dev.env
}


runPrivileged(){
    addAWSToEnv
    eval $*
}

# Print help message
printHelp(){
    echo "Usage:  bin/infra COMMAND

Command Runner for syncm8 infra commands.

Commands:
  build       Build dev image.
  login       Authenticate docker with aws ecr.
  priv        Run command with aws authentication enabled.
  pull        Pull image from aws ecr.
  pull-env    Pulls secrets from AWS Parameter Store
  push        Push dev image to aws ecr.
                  N.b. Must be authenticated with ecr."
}

op=$1
restArgs="${@:2}"

case $op in
    build)
        dockerBuild
        ;;
    login)
        dockerLogin
        ;;
    pull)
        dockerPull
        ;;
    pull-env)
        pullEnv
        ;;
    push)
        dockerPush
        ;;
    priv)
        runPrivileged $restArgs
        ;;
    *)
        printHelp
        ;;
esac