gistfile1.txt

langcode: en
status: true
dependencies: {  }
id: ya_node_article
migration_tags: null
migration_group: ya_example
label: 'Nodes (Article)'
source:
  plugin: d7_node
  node_type: article
process:
  nid: nid
  vid: vid
  langcode:
    plugin: default_value
    source: language
    default_value: und
  title: title
  # by not using plugin migration, this has potential of id collisions.
  uid: node_uid
  status: status
  created: created
  changed: changed
  promote: promote
  sticky: sticky
  revision_uid: revision_uid
  revision_log: log
  revision_timestamp: timestamp
  body: body
  # references migration ya_node_page for id migration integrity.
  field_drupal8_pages:
    plugin: migration
    migration: ya_node_page
    source: field_drupal7_pages
destination:
  plugin: 'entity:node'
  default_bundle: article
migration_dependencies:
  required:
    - ya_node_page

gistfile2.txt

<code>
Array
(
    [0] => lookupDestinationIds after conditions
    [1] => Array
        (
            [target_id] => 68
        )

    [2] => Array
        (
            [nid] => sourceid1
        )

    [3] => Array
        (
        )

    [4] => 02db060eff943c9d3e99f79dd573e1e2ab0d52d4dd041f59a0bc63f453f0af82
)

Processed 1 item (0 created, 0 updated, 1 failed, 0 ignored) - done with 'ya_node_article'                                          [status]

✝ vagrant@multi-vlad ✝ ../site/vlad_aux/d7d8-dev
$ drush mmsg ya_node_page
No messages for this migration                                                                                                      [status]

✝ vagrant@multi-vlad ✝ ../site/vlad_aux/d7d8-dev
$ drush mmsg ya_node_article
 source_ids_hash                                                   level   message                           
 34bf071f7083187c532015c732883ef4cd27d0351b55d4a5c6233fefa9a5d0a5  1       Extra unknown items in source IDs 
 33c8981f3a32ae575f410557a535f68eead82c0d3535cbfa5025bb9658e93d64  1       Extra unknown items in source IDs

</code>

gistfile3.txt

drush_print_r(array('lookupDestinationIds after conditions',$source_id_values,$this->sourceIdFields(),$conditions,$this->getSourceIDsHash(array_values($conditions))));

✝ vagrant@multi-vlad ✝ ../site/vlad_aux/d7d8-dev
$ drush mi ya_node_article --limit=1
Array
(
[0] => lookupDestinationIds begin
[1] => Array
(
[target_id] => 68
)

)

Array
(
[0] => lookupDestinationIds inside foreach
[1] => nid
[2] => sourceid1
)

lookupDestinationIds after conditions
$source_id_values
Array
(
[target_id] => 68
)

$this->sourceIdFields()
Array
(
[nid] => sourceid1
)

$conditions
Array
(
)

$this->getSourceIDsHash(array_values($conditions))
02db060eff943c9d3e99f79dd573e1e2ab0d52d4dd041f59a0bc63f453f0af82
Processed 1 item (0 created, 0 updated, 1 failed, 0 ignored) - done with 'ya_node_article' [status]

✝ vagrant@multi-vlad ✝ ../site/vlad_aux/d7d8-dev
$ drush mmsg ya_node_article
source_ids_hash level message
33c8981f3a32ae575f410557a535f68eead82c0d3535cbfa5025bb9658e93d64 1 Extra unknown items in source IDs

✝ vagrant@multi-vlad ✝ ../site/vlad_aux/d7d8-dev