gradle-garmin

Gradle plugins to assist with Garmin wearable development

Adding the plugin to your project

Plugin DSL

Apps

plugins {
  id "us.ctic.gradle-garmin-app" version "0.3.0"
}

Barrels

plugins {
  id "us.ctic.gradle-garmin-barrel" version "0.3.0"
}

Legacy

OR via the legacy method:

buildscript {
    repositories {
        mavenLocal()
    }
    dependencies {
        classpath group: 'us.ctic',
                name: 'gradle-garmin',
                version: '0.3.0'
    }
}

Apps

apply plugin: 'us.ctic.gradle-garmin-app'

Barrels

apply plugin: 'us.ctic.gradle-garmin-barrel' 

Sample Usage

Setting Environment variables

There are two environment variables that can be set which reduces the amount of configuration needed in the Gradle script. It is recommended that these be set to generify the build.

• GARMIN_SDK_HOME - The path to your Garmin SDK installation
• GARMIN_DEV_KEY - The location of the user generated Garmin developer key. Information on generating a developer key for signing your Garmin applications can be found in the Garmin Getting Started Guide.

WINDOWS USERS - Make sure your dev key path contains the dev key extension - ie. C:\\<your_path>\\developer_key.der

Configuration

Both Apps and Barrels share some of the same configuration items.

Property	Description	Required	Default
sdkDirectory	Location of the Garmin SDK install	Yes - if GARMIN_SDK_HOME is not set	N/A
appDirectory	Base directory for the app/barrel	No	<Project Directory>
outputDirectory	Directory for generated output	No	<Java Build Directory>
jungleFiles	Array of jungle files to compile with	No	<Project Directory>/monkey.jungle
outName	The generated file name(s)	No	<Project Name>
typeCheckLevel	Type checker level	No	Disabled

TYPE CHECKER - Beginning in the System level of 4.0, Garmin added Monkey Types to the language. The type checker verifies the code passes the quick checks like a linting tool. By default, the checker is disabled but adding the property and a level will enabled it at build time for apps and barrels. Further details can be found at https://developer.garmin.com/connect-iq/monkey-c/monkey-types/. The levels available are as follows:

• 0 - Silent - No type checking; keep everything dynamically typed
• 1 - Gradual - Type check any statement where typing can be inferred, otherwise stay silent
• 2 - Informative - Type check only what has been typed, warn about ambiguity
• 3 - Strict - Do not allow compiler ambiguity

Garmin Apps

For the Garmin App plugin, use the garminApp extension. In addition to the shared configuration items listed above, the following configuration options are available:

Property	Description	Required	Default
developerKey	The developer key used to compile the binaries	Yes - if GARMIN_DEV_KEY is not set	N/A
devices	List of devices to produce binaries	Yes	N/A
parallel	Whether or not to compile all devices in parallel	No	true

Example:

garminApp {
    developerKey = "<path-to-key>" //not needed if GARMIN_DEV_KEY is set
    sdkDirectory = "<path-to-sdk>" //not needed if GARMIN_SDK_HOME is set
    targetDevices = ["fenix5plus", "fenix6pro"]
}

Garmin Barrels

For building a Garmin barrel, use the garminBarrel extension.

Example:

garminBarrel {
    outName = "MySpecialBarrel"
    sdkDirectory = "<path-to-sdk>" //not needed if GARMIN_SDK_HOME is set
}

Building

Both plugins extends the JavaPlugin so building is as simple as running gradlew build. However, specific tasks for building each type of project are provided.

• Apps: gradlew buildGarminApp
• Barrels: gradlew buildGarminBarrel

Testing

To run unit tests, the test configuration can be added to both apps and barrels. Adding the test configuration is as simple as:

garminApp {
    appName = 'my-app'
    targetDevices = ["fenix5plus", "fenix6pro"]

    test {
        device = 'fenix5plus'
    }
}

The device tag is a required element and tells the test phase which device to simulate and run tests against.

Once the configuration is set, execute gradle test to run all unit tests.

Publishing

This is a new feature that isn't available in Garmin's SDK or via the Eclipse plugin. Built artifacts can now be published to maven repositories by default.

In either an app or barrel project, execute gradle publishToMavenLocal which will publish the artifact to your local maven repository.

Any repository configured according to the maven-publish instruction set will be available as a target repository for Garmin project builds.

publishing {
    repositories {
        maven {
            // change to point to your repo, e.g. http://my.org/repo
            url = "$buildDir/repo"
        }
    }
}

Running gradle publish will publish your build artifact(s) to all of your defined repositories.

Barrel Dependencies

Another new and useful feature is the ability to depend on published barrel artifacts from any configured repository. Simply use the barrel scope in front of any barrel dependency:

dependencies {
    barrel "com.test:my-awesome-barrel:1.0.0@barrel"
}

Since barrel files have a .barrel extension, notice that we also have to specify the extension with the @ notation.