### Runtime Dependency Management in Java

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Demonstrates initializing DependencyManager, adding dependencies with hashes, defining relocations, and then downloading, relocating, and loading them asynchronously. Requires implementing a ClasspathAppender.

```java
DependencyManager manager = new DependencyManager(DependencyPathProvider.directory(Paths.get("cache")));
manager.addDependencies(new StandardDependency("com.example", "examplepackage", "1.0.0", "<hash>", "SHA-256"));
manager.addRelocations(new Relocation("com.example", "relocated.com.example"));

Executor executor = Executors.newCachedThreadPool();

// All of these return CompletableFuture it is important to let the previous step finishing before starting the next
manager.downloadAll(executor, Collections.singletonList(new StandardRepository("https://repo.example.com/maven2"))).join();
manager.relocateAll(executor).join();
manager.loadAll(executor, classpathAppender).join(); // ClasspathAppender is a interface that you need to implement to append a Path to the classpath
```

--------------------------------

### Add DependencyDownload Runtime to Project

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Includes the DependencyDownload runtime library as an implementation dependency. Ensure you have the mavenCentral repository configured.

```groovy
repositories {
    mavenCentral()
}

dependencies {
    implementation 'dev.vankka:dependencydownload-runtime:2.0.0'
}
```

--------------------------------

### Runtime Loading with Jar-Relocator in Java

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Loads dependencies using a resource file generated for jar-relocator. Then, it proceeds to download and load all dependencies using a specified executor and repository. This assumes jar-relocator has been added to the classpath.

```java
DependencyManager manager = new DependencyManager(DependencyPathProvider.directory(Paths.get("cache")));
manager.loadResource(DependencyDownloadResource.parse(getClass().getResource("jarRelocator.txt")));

Executor executor = Executors.newCachedThreadPool(2);

manager.downloadAll(executor, Collections.singletonList(new StandardRepository("https://repo.example.com/maven2"))).join();
manager.loadAll(executor, classpathAppender).join();
// now jar-relocator is in the classpath and we can load (and relocate) dependencies from a regular configuration
```

--------------------------------

### Customize DependencyDownload Resource Generation Task

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Configures the Gradle task responsible for generating the dependency resource file. Allows specifying the configuration to use, whether to include relocations, the hashing algorithm, and the output file name.

```groovy
import dev.vankka.dependencydownload.task.GenerateDependencyDownloadResourceTask

task generateResource(type: GenerateDependencyDownloadResourceTask) {
    configuration = project.configurations.runtimeDownload
    includeRelocations = true
    hashingAlgorithm = 'SHA-256'
    file = 'dependencies.txt'
}
```

--------------------------------

### Add DependencyDownload Runtime Snapshot Dependency

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Adds the snapshot version of the DependencyDownload runtime library. This requires configuring a snapshot repository, such as Sonatype's snapshot repository.

```groovy
repositories {
    maven {
        url 'https://central.sonatype.com/repository/maven-snapshots/'
    }
}

dependencies {
    implementation 'dev.vankka:dependencydownload-runtime:2.0.1-SNAPSHOT'
}
```

--------------------------------

### Apply DependencyDownload Gradle Plugin

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Applies the DependencyDownload Gradle plugin to your project. This allows you to declare runtime dependencies and dependencies to be downloaded only, which will be processed by the plugin.

```groovy
plugins {
    id 'dev.vankka.dependencydownload.plugin' version '2.0.0'
}

dependencies {
    runtimeDownload 'some:dependency:x.y.z'
    runtimeDownloadOnly 'some.other:dependency:x.y.z'
}

jar.dependsOn generateRuntimeDownloadResourceForRuntimeDownloadOnly, generateRuntimeDownloadResourceForRuntimeDownload
This would generate two files `runtimeDownloadOnly.txt` and `runtimeDownload.txt`
```

--------------------------------

### Integrate Jar-Relocator with DependencyDownload Gradle

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Configures the Gradle build to download and generate a resource file for the jar-relocator dependency separately. This allows using jar-relocator's functionality for further relocations after initial downloads.

```groovy
import dev.vankka.dependencydownload.task.GenerateDependencyDownloadResourceTask
plugins {
    id 'dev.vankka.dependencydownload.plugin' version '2.0.0'
}

configurations {
    jarRelocator
}

repositories {
    mavenCentral()
}

dependencies {
    implementation('dev.vankka:dependencydownload-runtime:2.0.0') {
        exclude module: 'jar-relocator'
    }
    jarRelocator 'me.lucko:jar-relocator:1.4'
}

task generateJarRelocatorResource(type: GenerateDependencyDownloadResourceTask) {
    configuration = project.configurations.jarRelocator
}
processResources.dependsOn generateJarRelocatorResource
```

--------------------------------

### Load Dependencies from Plugin Generated File in Java

Source: https://github.com/vankka/dependencydownload/blob/main/README.md

Loads dependencies that were previously generated into a resource file by the Gradle plugin. This allows runtime loading without re-declaring them in code.

```java
DependencyManager manager = new DependencyManager(DependencyPathProvider.directory(Paths.get("cache")));
manager.loadResource(DependencyDownloadResource.parse(getClass().getResource("runtimeDownloadOnly.txt")));
```

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