Table of contents

Workers

This page list all the currently available workers on the cozy-stack. It describes their input arguments object. See the jobs document to know more about the API context in which you can see how to use these arguments.

log worker

The log worker will just print in the log file the job sent to it. It can useful for debugging for example.

thumbnail worker

The thumbnail worker is used internally by the stack to generate thumbnails from the image files of a cozy instance.

service worker

The service worker is used to process background jobs, generally to compute non-realtime user data.

push worker

The push worker can be used to send push-notifications to a user’s device. The options are:

Example

{
    "client_id": "abcdef123123123",
    "title": "My Notification",
    "message": "My notification content.",
    "priority": "high"
}

Permissions

To use this worker from a client-side application, you will need to ask the permission. It is done by adding this to the manifest:

{
    "permissions": {
        "push-notification": {
            "description": "Required to send notifications",
            "type": "io.cozy.jobs",
            "verbs": ["POST"],
            "selector": "worker",
            "values": ["push"]
        }
    }
}

unzip worker

The unzip worker can take a zip archive from the VFS, and will unzip the files inside it to a directory of the VFS. The options are:

Example

{
    "zip": "8737b5d6-51b6-11e7-9194-bf5b64b3bc9e",
    "destination": "88750a84-51b6-11e7-ba90-4f0b1cb62b7b"
}

Permissions

To use this worker from a client-side application, you will need to ask the permission. It is done by adding this to the manifest:

{
    "permissions": {
        "unzip-to-a-directory": {
            "description": "Required to unzip a file inside the cozy",
            "type": "io.cozy.jobs",
            "verbs": ["POST"],
            "selector": "worker",
            "values": ["unzip"]
        }
    }
}

sendmail worker

The sendmail worker can be used to send mail from the stack. It implies that the stack has properly configured an access to an SMTP server. You can see an example of configuration in the cozy.example.yaml file at the root of this repository.

sendmail options fields are the following:

Examples

// from mode sending mail from the user to a list of recipients
{
    "mode": "from",
    "to": [
        {"name": "John Doe 1", "email":"john1@doe"},
        {"name": "John Doe 2", "email":"john2@doe"}
    ],
    "subject": "Hey !",
    "parts": [
        {"type":"text/html", "body": "<h1>Hey !</h1>"},
        {"type":"text/plain", "body": "Hey !"}
    ]
}

// noreply mode, sending a notification mail to the user
{
    "mode": "noreply",
    "subject": "You've got a new file !",
    "parts": [
        {"type":"text/html", "body": "<h1>Hey !</h1>"},
        {"type":"text/plain", "body": "Hey !"}
    ]
}

Permissions

To use this worker from a client-side application, you will need to ask the permission. It is done by adding this to the manifest:

{
    "permissions": {
        "mail-from-the-user": {
            "description": "Required to send mails from the user to his/her friends",
            "type": "io.cozy.jobs",
            "verbs": ["POST"],
            "selector": "worker",
            "values": ["sendmail"]
        }
    }
}

export

The export worker can be used to generate allow the export of all data contained in the cozy. At the end of the export, a mail is sent to the user containing a link to access to its data.

The progress of the export process can be followed with realtime events on the doctype io.cozy.exports.

Its options are:

Example

{
    "parts_size": 52428800,
    "max_age": 60000000000, // 1 minute
    "with_doctypes": ["io.cozy.accounts"], // empty or null means all doctypes
    "without_files": false
}

Permissions

To use this worker from a client-side application, you will need to ask the permission. It is done by adding this to the manifest:

{
    "permissions": {
        "mail-from-the-user": {
            "description": "Required to create a export of the user's data",
            "type": "io.cozy.jobs",
            "verbs": ["POST"],
            "selector": "worker",
            "values": ["export"]
        }
    }
}

share workers

The stack have 3 workers to power the sharings (internal usage only):

  1. share-track, to update the io.cozy.shared database
  2. share-replicate, to start a replicator for most documents
  3. share-upload, to upload files

Share-track

The message is composed of 3 fields: the sharing ID, the rule index, and the doctype. The event is similar to a realtime event: a verb, a document, and optionaly the old version of this document.

Share-replicate and share-upload

The message is composed of a sharing ID and a count of the number of errors (i.e. the number of times this job was retried).

Deprecated workers

migrations

The migrations worker was used for migrating cozy instance that had their files in swift from a V1 layout to a V2 layout. The code is probably not in a good shape, and it would be safer to rework it before using it.

updates

The updates worker was used for updating applications when there were no auto-update mechanism.