Specifies where and whether to send notifications upon changes to a data store.

Attributes

• filter (type: String.t, default: nil) - Restricts notifications sent for messages matching a filter. If this is empty, all messages are matched. Syntax: https://cloud.google.com/appengine/docs/standard/python/search/query_strings

  The following fields and functions are available for filtering:

  • message_type, from the MSH-9.1 field. For example, NOT message_type = "ADT".
  • send_date or sendDate, the YYYY-MM-DD date the message was sent in the dataset's time_zone, from the MSH-7 segment. For example, send_date < "2017-01-02".
  • send_time, the timestamp when the message was sent, using the RFC3339 time format for comparisons, from the MSH-7 segment. For example, send_time < "2017-01-02T00:00:00-05:00".
  • send_facility, the care center that the message came from, from the MSH-4 segment. For example, send_facility = "ABC".
  • PatientId(value, type), which matches if the message lists a patient having an ID of the given value and type in the PID-2, PID-3, or PID-4 segments. For example, PatientId("123456", "MRN").
  • labels.x, a string value of the label with key x as set using the Message.labels map. For example, labels."priority"="high". The operator :* can be used to assert the existence of a label. For example, labels."priority":*.

• pubsubTopic (type: String.t, default: nil) - The Cloud Pub/Sub topic that notifications of changes are published on. Supplied by the client. The notification is a PubsubMessage with the following fields:

  • PubsubMessage.Data contains the resource name.
  • PubsubMessage.MessageId is the ID of this notification. It is guaranteed to be unique within the topic.
  • PubsubMessage.PublishTime is the time when the message was published. Note that notifications are only sent if the topic is non-empty. Topic names must be scoped to a project. Cloud Healthcare API service account must have publisher permissions on the given Pub/Sub topic. Not having adequate permissions causes the calls that send notifications to fail. If a notification can't be published to Cloud Pub/Sub, errors are logged to Cloud Logging. For more information, see Viewing error logs in Cloud Logging.