General

GET /api/events

Returns a list of events.

By setting the optional sign parameter to true, the method will pre-sign distribution urls if signing is turned on in Opencast. Remember to consider the maximum validity of signed URLs when caching this response.

Query String Parameter Type Description
sign boolean Whether public distribution urls should be signed.
withacl boolean Whether the acl metadata should be included in the response.
withmetadata boolean Whether the metadata catalogs should be included in the response.
withpublications boolean Whether the publication ids and urls should be included in the response.
filter string A comma seperated list of filters to limit the results with. A filter is the filter's name followed by a colon ":" and then the value to filter with so it is the form Filter Name:Value to Filter With. See the below table for the list of available filters.
sort string Sort the results based upon a list of comma seperated sorting criteria. In the comma seperated list each type of sorting is specified as a pair such as: Sort Name:ASC or Sort Name:DESC. Adding the suffix ASC or DESC sets the order as ascending or descending order and is mandatory. See the below table about the available sort names in the table below.
limit integer The maximum number of results to return for a single request.
offset integer Number of results to skip based on the limit. 0 is the first set of results up to the limit, 1 is the second set of results after the first limit, 2 is third set of results after skipping the first two sets of results etc.
Filter Name Description
contributors Events where the contributors match.
location Events based upon the location it is scheduled in.
series Events based upon which series they are a part of.
subject Filters events based upon which subject they are a part of.
textFilter Filters events where any part of the event's metadata fields match this value.
Sort Name Description
title By the title of the event.
presenter By the presenter of the event.
start_date By the start date of the event.
end_date By the end date of the event.
review_status By whether the event has been reviewed and approved or not.
workflow_state By the current processing state of the event. Is it scheduled to be recorded (INSTANTIATED), currently processing (RUNNING), paused waiting for a resource or user paused (PAUSED), cancelled (STOPPED), currently failing (FAILING), already failed (FAILED), or finally SUCCEEDED.
scheduling_status By the current scheduling status of the event.
series_name By the series name of the event.
location By the location (capture agent) that the event will be or has been recorded on.

Sample request

https://opencast.example.org/api/events?sort=title:DESC&limit=5&offset=1&filter=location:ca-01

Response

200 (OK): A (potentially empty) list of events is returned.

[
  {
    "archive_version": 2,
    "created": "2015-03-12T10:38:54Z",
    "creator": "Opencast Administrator",
    "contributors": ["Physics Department"],
    "description": "Cooling without moving parts and using only heat as an input",
    "duration": 7200000,
    "has_previews": true,
    "identifier": "e6aeb8df-a852-46cd-8128-b89de696f20e",
    "location": "physics-e-01",
    "presenters": ["Prof. A. Einstein"],
    "publication_status": [ "youtube", "internal" ],
    "processing_state": "SUCCEEDED",
    "start_time": "2015-03-20T04:00:00Z",
    "subjects": ["Space", "Final Frontier"],
    "title": "Einstein refrigerator"
  },
  {
    "archive_version": 5,
    "created": "2015-03-12T10:38:54Z",
    "creator": "Opencast Administrator",
    "contributors": ["Physics Department"],
    "description": "The history of the universe from the big bang to black holes",
    "duration": 7200000,
    "has_previews": true,
    "identifier": "f5aeb8df-a852-46cd-8128-b89de696f20e",
    "location": "physics-e-02",
    "presenters": ["Prof. Stephen Hawking"],
    "publication_status": [ "youtube", "internal" ],
    "processing_state": "SUCCEEDED",
    "start_time": "2015-03-20T04:00:00Z",
    "subjects": ["Space", "Final Frontier"],
    "title": "The Theory of Everything"
  }
]

POST /api/events

Creates an event by sending metadata, access control list, processing instructions and files in a multipart request.

Multipart Form Parameters Type Description
acl string A collection of roles with their possible action
metadata string Event metadata as Form param
presenter file Presenter movie track
presentation file Presentation movie track
audio file Audio track
processing string Processing instructions task configuration

Sample

metadata:

[
  {
    "flavor": "dublincore/episode",
    "fields": [
      {
        "id": "title",
        "value": "Captivating title"
      },
      {
        "id": "subjects",
        "value": ["John Clark", "Thiago Melo Costa"]
      },
      {
        "id": "description",
        "value": "A great description"
      },
      {
        "id": "startDate",
        "value": "2016-06-22"
      },
      {
        "id": "startTime",
        "value": "13:30:00Z"
      }
    ]
  }
]

processing:

{
  "workflow": "ng-schedule-and-upload",
  "configuration": {
    "flagForCutting": "false",
    "flagForReview": "false",
    "publishToEngage": "true",
    "publishToHarvesting": "true",
    "straightToPublishing": "true"
  }
}

acl:

[
  {
    "action": "write",
    "role": "ROLE_ADMIN"
  },
  {
    "action": "read",
    "role": "ROLE_USER"
  }
]

Response

201 (CREATED): A new event is created and its identifier is returned in the Location header.
400 (BAD REQUEST): The request is invalid or inconsistent.

Location: http://api.opencast.org/api/events/e6aeb8df-a852-46cd-8128-b89de696f20e
{
  "identifier": "e6aeb8df-a852-46cd-8128-b89de696f20e"
}

GET /api/events/{event_id}

Returns a single event.

By setting the optional sign parameter to true, the method will pre-sign distribution urls if signing is turned on in Opencast. Remember to consider the maximum validity of signed URLs when caching this response.

Query String Parameter Type Description
sign boolean Whether public distribution urls should be signed.
withacl boolean Whether the acl metadata should be included in the response.
withmetadata boolean Whether the metadata catalogs should be included in the response.
withpublications boolean Whether the publication ids and urls should be included in the response.

Response

200 (OK): The event is returned.
404 (NOT FOUND): The specified event does not exist.

{
  "archive_version": 2,
  "created": "2015-03-12T10:38:54Z",
  "creator": "Opencast Administrator",
  "contributors": ["Physics Department"],
  "description": "Cooling without moving parts and using only heat as an input",
  "duration": 7200000,
  "has_previews": true,
  "identifier": "e6aeb8df-a852-46cd-8128-b89de696f20e",
  "location": "physics-e-01",
  "presenters": ["Prof. A. Einstein"],
  "publication_status": [ "youtube", "internal" ],
  "processing_state": "SUCCEEDED",
  "start_time": "2015-03-20T04:00:00Z",
  "subjects": ["Space", "Final Frontier"],
  "title": "Einstein refrigerator"
}

POST /api/events/{event_id}

Updates an event.

Multipart Form Parameters Type Description
acl string A collection of roles with their possible action
metadata string Event metadata as Form param
presenter file Presenter movie track
presentation file Presentation movie track
audio file Audio track
processing string Processing instructions task configuration

Sample

This sample request will update the Dublin Core metadata section of the event only.

metadata:

[
  {
    "flavor": "dublincore/episode",
    "fields": [
      {
        "id": "title",
        "value": "Captivating title"
      },
      {
        "id": "subjects",
        "value": ["Space", "Final Frontier"]
      },
      {
        "id": "description",
        "value": "A great description"
      }
    ]
  }
]

Response

204 (NO CONTENT): The event has been updated.
404 (NOT FOUND): The specified event does not exist.

DELETE /api/events/{event_id}

Deletes an event.

Response

204 (NO CONTENT): The event has been deleted.
404 (NOT FOUND): The specified event does not exist.

Access Policy

Most events in Opencast come with an access control list (ACL), containing entries that map actions to roles, either allowing or denying that action.

The section on roles in the chapter on Authorization will help shed some light on what kind of roles are available and how they are assigned to the current user.

GET /api/events/{event_id}/acl

Returns an event's access policy.

Response

200 (OK): The access control list for the specified event is returned.
404 (NOT FOUND): The specified event does not exist.

[
  {
    "allow": true,
    "action": "write",
    "role": "ROLE_ADMIN"
  },
  {
    "allow": true,
    "action": "read",
    "role": "ROLE_USER"
  }
]

PUT /api/events/{event_id}/acl

Update an event's access policy.

Form Parameters Type Description
acl string Access policy

Sample

acl:

[
  {
    "allow": true,
    "action": "write",
    "role": "ROLE_ADMIN"
  },
  {
    "allow": true,
    "action": "read",
    "role": "ROLE_USER"
  }
]

Response

204 (NO CONTENT): The access control list for the specified event is updated.
404 (NOT FOUND): The specified event does not exist.

POST /api/events/{event_id}/acl/{action}

Grants permission to execute action on the specified event to any user with role role. Note that this is a convenience method to avoid having to build and post a complete access control list.

Path Parameters Type Description
event_id string Event identifier
action string The action that is allowed to be executed
Form Parameters Type Description
role string The role that is granted permission

Sample

role: "ROLE_STUDENT"

Response

204 (NO CONTENT): The permission has been created in the access control list of the specified event.
404 (NOT FOUND): The specified event does not exist.

DELETE /api/events/{event_id}/acl/{action}/{role}

Revokes permission to execute action on the specified event from any user with role role.

Path Parameters Type Description
event_id string Event identifier
action string The action that is no longer allowed to be executed
role string The role that is no longer granted permission

Response

204 (NO CONTENT): The permission has been revoked from the access control list of the specified event.
404 (NOT FOUND): The specified event does not exist.

Metadata

GET /api/events/{event_id}/metadata

Returns the complete set of metadata.

Response

200 (OK): The metadata collection is returned.
404 (OK): The specified event does not exist.

[
  {
    "label": "EVENTS.EVENTS.DETAILS.CATALOG.EPISODE",
    "flavor": "dublincore/episode",
    "fields": [
      {
        "id": "title",
        "readOnly": false,
        "value": "Captivating title",
        "label": "EVENTS.EVENTS.DETAILS.METADATA.TITLE",
        "type": "text",
        "required": true
      },
      {
        "id": "description",
        "readOnly": false,
        "value": "A great description",
        "label": "EVENTS.EVENTS.DETAILS.METADATA.DESCRIPTION",
        "type": "text_long",
        "required": false
      }
    ]
  },
  {
    "label": "EVENTS.EVENTS.DETAILS.CATALOG.LICENSE",
    "flavor": "license/episode",
    "fields": [
      {
        "id": "license",
        "readOnly": false,
        "value": "CCND",
        "label": "EVENTS.EVENTS.DETAILS.METADATA.LICENSE",
        "collection": {
          "BSD": "EVENTS.LICENSE.BSD",
          "GPL3": "EVENTS.LICENSE.GPL",
          "CCND": "EVENTS.LICENSE.CCND"
        },
        "type": "text",
        "required": false
      }
    ]
  }
]

GET /api/events/{event_id}/metadata

Returns the event's metadata of the specified type. For a metadata catalog there is the flavor such as "dublincore/episode" and this is the unique type.

Query String Parameters Type Description
type String The type of metadata to get

Response

200 (OK): The metadata collection is returned.
404 (NOT FOUND): The specified event does not exist.

[
  {
    "id": "title",
    "readOnly": false,
    "value": "Captivating title",
    "label": "EVENTS.EVENTS.DETAILS.METADATA.TITLE",
    "type": "text",
    "required": true
  },
  {
    "id": "description",
    "readOnly": false,
    "value": "A great description",
    "label": "EVENTS.EVENTS.DETAILS.METADATA.DESCRIPTION",
    "type": "text_long",
    "required": false
  }
]

PUT /api/events/{event_id}/metadata

Update the metadata with the matching type of the specified event. For a metadata catalog there is the flavor such as "dublincore/episode" and this is the unique type.

Query String Parameters Type Description
type String The type of metadata to update
Form Parameters Type Description
metadata string Metadata catalog in JSON format

Sample

metadata:

[
  {
    "id": "title",
    "value": "Captivating title"
  },
  {
    "id": "subjects",
    "value": ["Space", "Final Frontier"]
  },
  {
    "id": "description",
    "value": "A great description"
  }
]

Response

204 (NO CONTENT): The metadata of the given namespace has been updated.
400 (BAD REQUEST): The request is invalid or inconsistent.
404 (NOT FOUND): The specified event does not exist.

DELETE /api/events/{event_id}/metadata

Delete the metadata namespace catalog of the specified event. This will remove all fields and values of the catalog.

Query String Parameters Type Description
type String The type of metadata to delete

Response

204 (NO CONTENT): The metadata of the given namespace has been updated.
403 (FORBIDDEN): The main metadata catalog dublincore/episode cannot be deleted as it has mandatory fields.
404 (NOT FOUND): The specified event does not exist.

Publications

GET /api/events/{event_id}/publications

Returns an event's list of publications.

Response

200 (OK): The list of publications is returned.
404 (NOT FOUND): The specified event does not exist.

[
  {
    "id":"publication-1",
    "channel":"engage",
    "mediatype":"text/html",
    "url":"http://engage.opencast.org/engage/ui/player.html?id=123"
  },
  {
    "id":"publication-2",
    "channel":"oaipmh",
    "mediatype":"text/html",
    "url":"http://oaipmh.opencast.org/default/?verb=GetRecord&id=123"
  }
]

GET /api/events/{event_id}/publications/{publication_id}

Returns a single publication.

Response

200 (OK): The track details are returned.
404 (NOT FOUND): The specified event does not exist.
404 (NOT FOUND): The specified publication does not exist.

{
  "id":"publication-1",
  "channel":"engage",
  "mediatype":"text/html",
  "url":"http://engage.opencast.org/engage/ui/player.html?id=123",
  "media":[
    {
      "id":"track-1",
      "mediatype":"video/mp4",
      "url":"http://download.opencast.org/123/presenter.mp4",
      "flavor":"presenter/delivery",
      "size":84938490,
      "checksum":"58308405383094",
      "tags":[

      ],
      "has_audio":true,
      "has_video":true,
      "duration":3648,
      "description":"Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360, 447 kb/s, 25 fps, 25"
    },
    {
      "id":"track-2",
      "mediatype":"audio/aac",
      "url":"http://download.opencast.org/123/presenter.m4a",
      "flavor":"presenter/audio",
      "size":9364,
      "checksum":"839478372",
      "tags":[

      ],
      "has_audio":true,
      "has_video":false,
      "duration":3648,
      "description":"aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)"
    }
  ],
  "attachments":[
    {
      "id":"attachment-1",
      "mediatype":"image/png",
      "url":"http://download.opencast.org/123/preview.png",
      "flavor":"presenter/preview",
      "size":62728,
      "checksum":"389475737",
      "tags":[

      ]
    }
  ],
  "metadata":[
    {
      "id":"catalog-1",
      "mediatype":"text/xml",
      "url":"http://download.opencast.org/123/dublincore.xml",
      "flavor":"dublincore/episode",
      "size":364,
      "checksum":"18498498383",
      "tags":[

      ]
    }
  ]
}