Downloader


The downloader component provides a service to download files. It will raise an error and not continue to set itself up when the download directory does not exist. The directory needs to be writable for the user that is running Home Assistant.

To enable it, add the following lines to your configuration.yaml file:

# Example configuration.yaml entry
downloader:
  download_dir: downloads

Configuration Variables

download_dir

(string)(Required)If the path is not absolute, it’s assumed to be relative to the Home Assistant configuration directory (eg. .homeassistant/downloads).

Use the service

Go to the “Developer Tools”, then to “Call Service”, and choose downloader/download_file from the list of available services. Fill the “Service Data” field as shown in the example below and hit “CALL SERVICE”.

{"url":"http://domain.tld/path/to/file"}

This will download the file from the given URL.

Service data attribute Optional Description
url no The URL of the file to download.
subdir yes Download into subdirectory of download_dir
filename yes Determine the filename.
overwrite yes Whether to overwrite the file or not, defaults to false.

Download Status Events

When a download finished successfully, Home Assistant will emit a ‘downloader_download_completed’ event to the event bus which you can use to write automations against. In case download failed another event ‘downloader_download_failed’ is emitted to indicate that the download did not complete successfully.

Along with the event the following payload parameters are available:

Parameter Description
url The url that was requested.
filename The name of the file that was being downloaded.

Example Automation:

- alias: Download Failed Notification
  trigger:
    platform: event
    event_type: downloader_download_failed
  action:
    service: persistent_notification.create
    data_template:
      message: " download failed"
      title: "Download Failed"