Publish maven artifact to S3

One minute read in Gradle Highlights

Create AWS account

https://aws.amazon.com/

Create AWS S3 Bucket and make it public

Bucket policy

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "PublicRead",
            "Effect": "Allow",
            "Principal": "*",
            "Action": [
                "s3:GetObject",
                "s3:ListBucket"
            ],
            "Resource": [
                "arn:aws:s3:::bucket-name",
                "arn:aws:s3:::bucket-name/*"
            ]
        }
    ]
}

Create AWS Credentials

  1. Create IAM Policy
  2. Create IAM Group
  3. Create IAM User

AWS Credentials

AWS_ACCESS_KEY_ID: AKIAWEMDLXBHKYY2SV45
AWS_SECRET_ACCESS_KEY: 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

Setup maven-publish plugin in Gradle

plugins {
    kotlin("jvm").version("1.4.21")
    `maven-publish`
}

group = "io.heapy.deploy-sample"
version = "1.0"

repositories {
    mavenCentral()
}

dependencies {
    implementation(kotlin("stdlib"))
}

publishing {
    repositories {
        maven {
            url = uri("s3://simple-repo")
            credentials(AwsCredentials::class) {
                accessKey = System.getenv("AWS_ACCESS_KEY_ID")
                secretKey = System.getenv("AWS_SECRET_ACCESS_KEY")
            }
        }
    }

    publications {
        create<MavenPublication>("sample") {
            from(project.components["java"])
        }
    }
}

Publish command

export AWS_ACCESS_KEY_ID=AKIAWEMDLXBHKYY2SV45; export AWS_SECRET_ACCESS_KEY=kUr2HUHcDlDkqBkIZw6//HXzk3j7Wmzs3fFBB+JV; ./gradlew publish

Use repo in project

plugins {
    kotlin("jvm").version("1.4.21")
}

group = "io.heapy.deploy-sample"
version = "1.0"

repositories {
    maven {
        url = uri("https://simple-repo.s3.eu-central-1.amazonaws.com")
    }
}

dependencies {
    implementation(kotlin("stdlib"))
    implementation("io.heapy.deploy-sample:deploy-sample:1.0")
}

Caveats

  1. Don’t use + symbol in artifact version! Because + interpreted as space in s3.

In Heapy/repo.kotlin.link edit index.yml:

"https://simple-repo.s3.eu-central-1.amazonaws.com":
    - "io.heapy.deploy-sample"

After your PR accepted, you can replace https://simple-repo.s3.eu-central-1.amazonaws.com with https://repo.kotlin.link in build.gradle.kts:

plugins {
    kotlin("jvm").version("1.4.21")
}

group = "io.heapy.deploy-sample"
version = "1.0"

repositories {
    maven {
        url = uri("https://repo.kotlin.link")
    }
}

dependencies {
    implementation(kotlin("stdlib"))
    implementation("io.heapy.deploy-sample:deploy-sample:1.0")
}
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