Download-manager

This download-manager provides functionality for downloading and caching files from various sources.

It handles downloading files from local or remote locations, caching them locally, and tracking download progress.

JAVAYAML

.configureResource(DownloadManagerConfigBuilder.builder()
    .withPrintDownloadProgress(value)
    .withCache(builder -> builder
        .withDirectory(value)
        .withMaxCacheSize(value)
        .withExpirationTime(value)
        .withCleanupOnStart(value)
    )
)

resource:
  download-manager:
    printDownloadProgress: value
    cache:
      directory: value
      maxCacheSize: value
      expirationTime: value
      cleanupOnStart: value

Java dependency management

Add this declaration to your dependency management system to access the configuration DSL for this plugin in Java.

MavenGradle

<dependency>
    <groupId>org.voltdb</groupId>
    <artifactId>volt-stream-plugin-onnx-api</artifactId>
    <version>1.0-20250910-124207-release-1.5.3</version>
</dependency>

implementation group: 'org.voltdb', name: 'volt-stream-plugin-onnx-api', version: '1.0-20250910-124207-release-1.5.3'

Properties

printDownloadProgress

Whether to display progress information during file downloads. Type: boolean

Default value: false

cache

This configuration controls how files are cached locally, including the cache location, size limits, expiration policy, and cleanup behavior. If not provided files will be cached in the /tmp directory.

Type: object

Fields of cache:

cache.directory

Directory where files will be cached. If not specified, a temporary directory will be created. Type: string

cache.maxCacheSize

Maximum size of the cache in bytes. Files will be evicted when the cache exceeds this size. Use 0 for unlimited. Type: number

Default value: 0

cache.expirationTime

Duration after which cached files are considered stale and will not be used by the system. Type: object

cache.cleanupOnStart

Whether to clean up expired or invalid cache entries when the cache is initialized. Type: boolean

Default value: false

Usage Examples

YAML

version: 1 name: DownloadExample

resources: - name: "fileDownloader" download-manager: printDownloadProgress: true cache: directory: "/media/cache" expirationTime: "P1D" cleanupOnStart: true