Upload APK file S3 bucket

README.md

Publish Android APKs to S3

Usage

Setup your S3 variables. Highly recommend that the access key and id are referred to as environment variables then they don't end up in your source repo. The snippet below sets up the variables for all projects in your build but you can do it on an individual project basis as well if you prefer.

allprojects {

    project.ext.AWS_S3_BUCKET = "my.bucket"
    project.ext.AWS_S3_KEY_SECRET = "${aws_accesskey}"
    project.ext.AWS_S3_KEY_ID = "${aws_accessid}"
    project.ext.AWS_S3_APK_TARGET_FOLDER = "apks"
}

In the gradle script for each application you want to upload simply include the s3-upload script

apply from: 's3-upload.gradle'

You should then find you get additional task(s) for your application in the form

publish${flavor}ApkToS3

This script makes use of CURL so you need to make sure it is installed on the machine where you run the task.

s3-upload.gradle

import javax.crypto.Mac
import javax.crypto.spec.SecretKeySpec
import java.text.SimpleDateFormat

android.applicationVariants.all { variant ->
    task ("publish${variant.name.capitalize()}ApkToS3", dependsOn: "${variant.name}CustomPlatformSigning") << {
        if (!project.hasProperty('AWS_S3_BUCKET') || !project.hasProperty('AWS_S3_KEY_ID') || !project.hasProperty('AWS_S3_KEY_SECRET')) {
            throw new GradleException("Please set AWS_S3_BUCKET, AWS_S3_KEY_ID and AWS_S3_KEY_SECRET properties.")
        }

        def bucket = project.AWS_S3_BUCKET
        def keyId = project.AWS_S3_KEY_ID
        def keySecret = project.AWS_S3_KEY_SECRET

        def prefix = project.hasProperty('AWS_S3_APK_TARGET_FOLDER') ? project.AWS_S3_APK_TARGET_FOLDER + "/" : ""

        def targetPath = prefix + "${project.name}-${variant.versionName}.apk"
        def apkFile = variant.outputs[0].outputFile

        def contentType = "application/vnd.android.package-archive"
        def date = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss ZZZZ").format(new Date())

        def resource = "/${bucket}/${targetPath}"
        def data = "PUT\n\n${contentType}\n${date}\n${resource}"
        def signingKey = new SecretKeySpec(keySecret.getBytes(), "HmacSHA1");
        def mac = Mac.getInstance("HmacSHA1");
        mac.init(signingKey);
        def sig = mac.doFinal(data.getBytes()).encodeBase64()

        exec {
            executable "curl"
            args '-k', '-X', 'PUT',
                    '-T', apkFile.getAbsolutePath(),
                    '-H', 'Date: ' + date,
                    '-H', 'Authorization: AWS ' + keyId + ':' + sig,
                    '-H', 'Content-Type: ' + contentType,
                    '-H', "Host: ${bucket}.s3.amazonaws.com",
                    'https://' + bucket + '.s3.amazonaws.com/' + targetPath
        }
    }
}