oci-gradle-build-cache-plugin

---

This is a custom Gradle build cache implementation which uses the Oracle Cloud to store the cache objects.

Warning

This plugin is not endorsed by Oracle nor does the company provide any support for it.

Prerequisites

1. An Oracle Cloud account. Sign up for an Always Free tier account at http://oracle.com/cloud/free.

2. A resource compartment. It’s recommended to use a compartment different from the default root.

3. Setup an Object Lifecycle Policy on the compartment. Refer to https://docs.cloud.oracle.com/iaas/Content/Object/Tasks/usinglifecyclepolicies.htm

Gradle 8.x and Java 11 are the minimum requirements to run this plugin.

Usage

Add the following to your settings.gradle file

buildscript {
    repositories {
        mavenCentral()
        gradlePluginPortal()
    }
    dependencies {
        classpath 'org.kordamp.gradle:oci-gradle-build-cache-plugin:0.10.0'
    }
}

apply plugin: 'org.kordamp.gradle.oci-build-cache'

Configuration

Add the following to your settings.gradle file

ext.isCiServer = System.getenv().containsKey('CI')

buildCache {
    local {
        enabled = !isCiServer
    }
    remote(org.kordamp.gradle.plugin.buildcache.OCIBuildCache) {
        compartmentId = <compartment-id>
        push = isCiServer
    }
}

The plugin offers the following configuration properties

Configuration Key	Description	Mandatory	Default Value
configFile	Location of the config file	no	~/.oci/config
profile	Name of the OCI profile to use	no	DEFAULT
compartmentId	Compartment that owns the bucket	yes
bucket	Bucket name	no	build-cache
policy	Object lifecycle policy (DELETE)	no	amount: 30L, unit: days
failOnError	Fail the build on config error	no	true

The default object lifecycle policy is to delete cached items after 30 days. You can change these defaults with the following snippet

settings.gradle

buildCache {
    local {
        enabled = !isCiServer
    }
    remote(org.kordamp.gradle.plugin.buildcache.OCIBuildCache) {
        compartmentId = <compartment-id>
        push = isCiServer
        policy {
            amount = 90L // 3 months
        }
    }
}

You can configure authentication in two ways:

1. Using the standard configuration file, typically located at ~/.oci/config.

2. Defining a config block on the remote block.

Standard Config File

The format of the configuration file is specified at this page, it looks something similar to

~/.oci/config

[DEFAULT]
user=ocid1.user.oc1...
tenancy=ocid1.tenancy.oc1...
region=eu-frankfurt-1
key_file=~/.oci/oci_api_key.pem
pass_phrase=<secret>
fingerprint=f9:14:d0:...

Config Block

Alternatively you may define a config block. This block defines properties that match settings found on the config file

settings.gradle

buildCache {
    local {
        enabled = !isCiServer
    }
    remote(org.kordamp.gradle.plugin.buildcache.OCIBuildCache) {
        compartmentId = <compartment-id>
        bucket = <bucket-name>
        push = isCiServer
        config {
            userId      = 'ocid1.user.oc1...'
            tenantId    = 'ocid1.tenancy.oc1...'
            region      = 'eu-frankfurt-1'
            keyfile     = '~/.oci/oci_api_key.pem'
            passphrase  = '<secret>'
            fingerprint = 'f9:14:d0:...'
        }
    }
}

More details about configuring the Gradle build cache can be found in the official Gradle documentation.