<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="http://ontariohealth.ca/fhir/pubsub/StructureDefinition/ext-SubscriptionNotificationRetryPeriod" />
  <name value="SubscriptionNotificationRetryPeriod" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Subscription.channel" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <definition value="Interval in hours to retry sending notification." />
    </element>
    <element id="Extension.extension:retry-period">
      <path value="Extension.extension" />
      <sliceName value="retry-period" />
      <short value="Notification retry period." />
      <definition value="If the notification delivery fails, system would make a retry attempt to deliver the notification after period of time indicated in this element." />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:retry-period.url">
      <path value="Extension.extension.url" />
      <fixedUri value="retry-period" />
    </element>
    <element id="Extension.extension:retry-period.value[x]">
      <path value="Extension.extension.value[x]" />
      <min value="1" />
      <type>
        <code value="Duration" />
      </type>
    </element>
    <element id="Extension.extension:retry-enabled">
      <path value="Extension.extension" />
      <sliceName value="retry-enabled" />
      <short value="Enabled indicator for notification retry submission" />
      <definition value="If the value of the element is true, the system will retry notification submission according to the predefined period." />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:retry-enabled.url">
      <path value="Extension.extension.url" />
      <fixedUri value="retry-enabled" />
    </element>
    <element id="Extension.extension:retry-enabled.value[x]">
      <path value="Extension.extension.value[x]" />
      <min value="1" />
      <type>
        <code value="boolean" />
      </type>
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://ontariohealth.ca/fhir/StructureDefinition/ca-on-ext-SubscriptionNotificationRetryPeriod" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>