How to use

delete

method

in

org.apache.james.backends.es.ElasticSearchIndexer

@Override
public void delete(MailboxSession session, Mailbox mailbox, List<MessageUid> expungedUids) throws MailboxException {
  try {
    elasticSearchIndexer.delete(expungedUids.stream()
      .map(uid ->  indexIdFor(mailbox, uid))
      .collect(Collectors.toList()));
  } catch (Exception e) {
    if (LOGGER.isErrorEnabled()) {
      LOGGER.error("Error when deleting messages {} in mailbox {} from index", mailbox.getMailboxId().serialize(), expungedUids.toArray(), e);
    }
  }
}

@Test
@SuppressWarnings("unchecked")
public void deleteShouldWork() throws Exception {
  //Given
  Mailbox mailbox = mock(Mailbox.class);
  when(mailbox.getMailboxId())
    .thenReturn(MAILBOX_ID);
  BulkResponse expectedBulkResponse = mock(BulkResponse.class);
  when(elasticSearchIndexer.delete(any(List.class)))
    .thenReturn(Optional.of(expectedBulkResponse));
  //When
  testee.delete(session, mailbox, Lists.newArrayList(MESSAGE_UID));
  //Then
  verify(elasticSearchIndexer).delete(eq(Lists.newArrayList(ELASTIC_SEARCH_ID)));
}

@Test
@SuppressWarnings("unchecked")
public void deleteShouldNotPropagateExceptionWhenExceptionOccurs() throws Exception {
  //Given
  Mailbox mailbox = mock(Mailbox.class);
  when(mailbox.getMailboxId())
    .thenReturn(MAILBOX_ID);
  
  when(elasticSearchIndexer.delete(any(List.class)))
    .thenThrow(new ElasticsearchException(""));
  
  //When
  testee.delete(session, mailbox, Lists.newArrayList(MESSAGE_UID));
  
  //Then
  //No exception
}

@Test
@SuppressWarnings("unchecked")
public void deleteShouldWorkWhenMultipleMessageIds() throws Exception {
  //Given
  Mailbox mailbox = mock(Mailbox.class);
  MessageUid messageId2 = MessageUid.of(2);
  MessageUid messageId3 = MessageUid.of(3);
  MessageUid messageId4 = MessageUid.of(4);
  MessageUid messageId5 = MessageUid.of(5);
  when(mailbox.getMailboxId())
    .thenReturn(MAILBOX_ID);
  BulkResponse expectedBulkResponse = mock(BulkResponse.class);
  when(elasticSearchIndexer.delete(any(List.class)))
    .thenReturn(Optional.of(expectedBulkResponse));
  
  //When
  testee.delete(session, mailbox, Lists.newArrayList(MESSAGE_UID, messageId2, messageId3, messageId4, messageId5));
  
  //Then
  verify(elasticSearchIndexer).delete(eq(Lists.newArrayList(ELASTIC_SEARCH_ID, "12:2", "12:3", "12:4", "12:5")));
}