first commit

core/modules/content_translation/migrations/d6_custom_block_translation.yml

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+id: d6_custom_block_translation
+label: Content block translations
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: d6_box_translation
+process:
+  id:
+    plugin: migration_lookup
+    migration: d6_custom_block
+    source:
+      - bid
+  langcode: language
+  info:
+    -
+      plugin: callback
+      source:
+        - title_translated
+        - title
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  'body/value':
+    -
+      plugin: callback
+      source:
+        - body_translated
+        - body
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  'body/format':
+    plugin: migration_lookup
+    migration: d6_filter_format
+    source: format
+destination:
+  plugin: entity:block_content
+  no_stub: true
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - d6_filter_format
+    - block_content_body_field
+    - d6_custom_block
+    - language

core/modules/content_translation/migrations/d6_entity_reference_translation.yml

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+id: d6_entity_reference_translation
+label: Entity reference translations
+migration_tags:
+  - Drupal 6
+  - Multilingual
+  - Follow-up migration
+deriver: Drupal\migrate_drupal\Plugin\migrate\EntityReferenceTranslationDeriver
+provider:
+  - content_translation
+  - migrate_drupal
+# Supported target types for entity reference translation migrations. The array
+# keys are the supported target types and the values are arrays of migrations
+# to lookup for the translated entity IDs.
+target_types:
+  node:
+    - d6_node_translation
+    - d6_node_complete
+# The source plugin will be set by the deriver.
+source:
+  plugin: empty
+  key: default
+  target: default
+# The process pipeline will be set by the deriver.
+process: []
+# The destination plugin will be set by the deriver.
+destination:
+  plugin: null
+migration_dependencies:
+  required:
+    - language

core/modules/content_translation/migrations/d6_language_content_comment_settings.yml

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+# cspell:ignore newnode
+id: d6_language_content_comment_settings
+label: Drupal 6 language content comment settings
+migration_tags:
+  - Drupal 6
+  - Configuration
+  - Multilingual
+source:
+  plugin: d6_language_content_settings
+  constants:
+    target_type: comment
+    id_prefix: comment_node_
+    label_suffix: comment
+process:
+  # Ignore i18n_node_options_[node_type] options not available in Drupal 8,
+  # i18n_required_node and i18n_newnode_current
+  target_bundle:
+    -
+      plugin: concat
+      source:
+        - constants/id_prefix
+        - type
+    -
+      plugin: static_map
+      bypass: true
+      # The Forum module provides its own comment type (comment_forum), which we
+      # want to reuse if it exists.
+      map:
+        comment_node_forum: comment_forum
+  target_entity_type_id: constants/target_type
+  default_langcode:
+    -
+      plugin: static_map
+      source: language_content_type
+      map:
+        0: site_default
+        1: current_interface
+        2: current_interface
+    -
+      plugin: skip_on_empty
+      method: row
+  language_alterable:
+    plugin: static_map
+    source: language_content_type
+    map:
+      0: false
+      1: true
+      2: true
+  'third_party_settings/content_translation/enabled':
+    plugin: static_map
+    source: language_content_type
+    map:
+      # In the case of being 0, it will be skipped. We are not actually setting
+      # a null value.
+      0: NULL
+      1: false
+      2: false
+destination:
+  plugin: entity:language_content_settings
+migration_dependencies:
+  required:
+    - language
+    - d6_comment_type

core/modules/content_translation/migrations/d6_menu_links_localized.yml

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+# cspell:ignore mlid plid
+id: d6_menu_links_localized
+label: Menu links localized
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: menu_link
+  constants:
+    bundle: menu_link_content
+process:
+  skip_not_localized:
+    plugin: skip_on_empty
+    source: is_localized
+    method: row
+  id: mlid
+  title: link_title
+  description: description
+  langcode: language
+  menu_name:
+    -
+      plugin: migration_lookup
+      # The menu migration is in the system module.
+      migration: d6_menu
+      source: menu_name
+    -
+      plugin: skip_on_empty
+      method: row
+    -
+      plugin: static_map
+      map:
+        management: admin
+      bypass: true
+  'link/uri':
+    plugin: link_uri
+    source: link_path
+  'link/options':
+    plugin: link_options
+    source: options
+  route:
+    plugin: route
+    source:
+      - link_path
+      - options
+  route_name: '@route/route_name'
+  route_parameters: '@route/route_parameters'
+  url: '@route/url'
+  options: '@route/options'
+  external: external
+  weight: weight
+  expanded: expanded
+  enabled: enabled
+  parent:
+    plugin: menu_link_parent
+    source:
+      - plid
+      - '@menu_name'
+      - parent_link_path
+  changed: updated
+destination:
+  plugin: entity:menu_link_content
+  no_stub: true
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d6_language_content_menu_settings
+    - d6_menu_links

core/modules/content_translation/migrations/d6_menu_links_translation.yml

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+# cspell:ignore mlid
+id: d6_menu_links_translation
+label: Menu links
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: d6_menu_link_translation
+process:
+  id: mlid
+  langcode: language
+  title:
+    -
+      plugin: callback
+      source:
+        - title_translated
+        - link_title
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  description:
+    -
+      plugin: callback
+      source:
+        - description_translated
+        - description
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  menu_name:
+    -
+      plugin: migration_lookup
+      # The menu migration is in the system module.
+      migration: d6_menu
+      source: menu_name
+    -
+      plugin: skip_on_empty
+      method: row
+    -
+      plugin: static_map
+      map:
+        management: admin
+      bypass: true
+destination:
+  plugin: entity:menu_link_content
+  default_bundle: menu_link_content
+  no_stub: true
+  translations: true
+migration_dependencies:
+  required:
+    - language
+    - d6_menu
+    - d6_menu_links

core/modules/content_translation/migrations/d6_node_translation.yml

@@ -0,0 +1,60 @@
+# cspell:ignore tnid
+id: d6_node_translation
+label: Node translations
+migration_tags:
+  - Drupal 6
+  - translation
+  - Content
+  - Multilingual
+class: Drupal\node\Plugin\migrate\D6NodeTranslation
+deriver: Drupal\node\Plugin\migrate\D6NodeDeriver
+source:
+  plugin: d6_node
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid field to allow incremental migrations.
+  nid: tnid
+  type: type
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  'body/format':
+    plugin: migration_lookup
+    migration: d6_filter_format
+    source: format
+  'body/value': body
+  'body/summary': teaser
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+  content_translation_source: source_langcode
+
+#  unmapped d6 fields.
+#  translate
+#  moderate
+#  comment
+
+destination:
+  plugin: entity:node
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - d6_user
+    - d6_node_type
+    - d6_node_settings
+    - d6_filter_format
+    - language
+  optional:
+    - d6_field_instance_widget_settings
+    - d6_field_formatter_settings
+    - d6_upload_field_instance

core/modules/content_translation/migrations/d6_taxonomy_term_localized_translation.yml

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+id: d6_taxonomy_term_localized_translation
+label: Taxonomy localized term translations
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: d6_term_localized_translation
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the tid field to allow incremental migrations.
+  tid: tid
+  langcode: language
+  vid:
+    plugin: migration_lookup
+    migration: d6_taxonomy_vocabulary
+    source: vid
+  name:
+    -
+      plugin: callback
+      source:
+        - name_translated
+        - name
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  description:
+    -
+      plugin: callback
+      source:
+        - description_translated
+        - description
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+destination:
+  plugin: entity:taxonomy_term
+  translations: true
+migration_dependencies:
+  required:
+    - d6_taxonomy_term
+    - language

core/modules/content_translation/migrations/d6_taxonomy_term_translation.yml

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+id: d6_taxonomy_term_translation
+label: Taxonomy terms
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+source:
+  plugin: d6_taxonomy_term
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the tid field to allow incremental migrations.
+  tid: tid
+  langcode: language
+  vid:
+    plugin: migration_lookup
+    migration: d6_taxonomy_vocabulary
+    source: vid
+  name: name
+  description: description
+  weight: weight
+  # Only attempt to stub real (non-zero) parents.
+  parent_id:
+    -
+      plugin: skip_on_empty
+      method: process
+      source: parent
+    -
+      plugin: migration_lookup
+      migration: d6_taxonomy_term
+  parent:
+    plugin: default_value
+    default_value: 0
+    source: '@parent_id'
+  changed: timestamp
+destination:
+  plugin: entity:taxonomy_term
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - d6_taxonomy_vocabulary
+    - d6_taxonomy_term
+    - language

core/modules/content_translation/migrations/d6_term_node_translation.yml

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+id: d6_term_node_translation
+label: Term/node translation relationships
+migration_tags:
+  - Drupal 6
+  - Content
+  - Multilingual
+deriver: Drupal\taxonomy\Plugin\migrate\D6TermNodeDeriver
+source:
+  plugin: d6_term_node
+process:
+  dest_nid:
+    -
+      plugin: migration_lookup
+      migration:
+        - d6_node_complete
+        - d6_node_translation
+      source: nid
+    -
+      plugin: node_complete_node_translation_lookup
+    -
+      plugin: skip_on_empty
+      method: row
+  nid:
+    -
+      plugin: extract
+      index: [0]
+      source: '@dest_nid'
+    -
+      plugin: skip_on_empty
+      method: row
+  langcode:
+    -
+      plugin: extract
+      index: [1]
+      source: '@dest_nid'
+    -
+      plugin: skip_on_empty
+      method: row
+  type: type
+  # The actual field name is dynamic and will be added by the builder.
+destination:
+  plugin: entity:node
+  translations: true
+migration_dependencies:
+  required:
+    - d6_vocabulary_entity_display
+    - d6_vocabulary_entity_form_display
+    - d6_node
+    - d6_node_translation
+    - language

core/modules/content_translation/migrations/d7_comment_entity_translation.yml

@@ -0,0 +1,28 @@
+id: d7_comment_entity_translation
+label: Comment entity translations
+migration_tags:
+  - Drupal 7
+  - translation
+  - Content
+class: Drupal\comment\Plugin\migrate\D7Comment
+source:
+  plugin: d7_comment_entity_translation
+process:
+  cid: entity_id
+  subject: subject
+  langcode: language
+  uid: uid
+  status: status
+  created: created
+  changed: changed
+  content_translation_source: source
+  content_translation_outdated: translate
+destination:
+  plugin: entity:comment
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d7_entity_translation_settings
+    - d7_comment

core/modules/content_translation/migrations/d7_custom_block_translation.yml

@@ -0,0 +1,50 @@
+id: d7_custom_block_translation
+label: Content block translations
+migration_tags:
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: d7_block_custom_translation
+process:
+  id:
+    plugin: migration_lookup
+    migration: d7_custom_block
+    source:
+      - bid
+  langcode: language
+  info:
+    -
+      plugin: callback
+      source:
+        - title_translated
+        - title
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  'body/value':
+    -
+      plugin: callback
+      source:
+        - body_translated
+        - body
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  'body/format':
+    plugin: migration_lookup
+    migration: d7_filter_format
+    source: format
+destination:
+  plugin: entity:block_content
+  no_stub: true
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - d7_filter_format
+    - block_content_body_field
+    - d7_custom_block
+    - language

core/modules/content_translation/migrations/d7_entity_reference_translation.yml

@@ -0,0 +1,30 @@
+id: d7_entity_reference_translation
+label: Entity reference translations
+migration_tags:
+  - Drupal 7
+  - Multilingual
+  - Follow-up migration
+deriver: Drupal\migrate_drupal\Plugin\migrate\EntityReferenceTranslationDeriver
+provider:
+  - content_translation
+  - migrate_drupal
+# Supported target types for entity reference translation migrations. The array
+# keys are the supported target types and the values are arrays of migrations
+# to lookup for the translated entity IDs.
+target_types:
+  node:
+    - d7_node_translation
+    - d7_node_complete
+# The source plugin will be set by the deriver.
+source:
+  plugin: empty
+  key: default
+  target: default
+# The process pipeline will be set by the deriver.
+process: []
+# The destination plugin will be set by the deriver.
+destination:
+  plugin: null
+migration_dependencies:
+  required:
+    - language

core/modules/content_translation/migrations/d7_entity_translation_settings.yml

@@ -0,0 +1,34 @@
+id: d7_entity_translation_settings
+label: Drupal 7 Entity Translation settings
+migration_tags:
+  - Drupal 7
+  - Configuration
+  - Multilingual
+source:
+  plugin: d7_entity_translation_settings
+process:
+  id: id
+  target_entity_type_id: target_entity_type_id
+  target_bundle: target_bundle
+  default_langcode:
+    plugin: static_map
+    source: default_langcode
+    bypass: true
+    map:
+      xx-et-default: site_default
+      xx-et-current: current_interface
+      xx-et-author: authors_default
+  language_alterable: language_alterable
+  third_party_settings/content_translation/enabled:
+    plugin: default_value
+    default_value: true
+  third_party_settings/content_translation/bundle_settings/untranslatable_fields_hide: untranslatable_fields_hide
+destination:
+  plugin: entity:language_content_settings
+migration_dependencies:
+  required:
+    - language
+  optional:
+    - d7_comment_type
+    - d7_node_type
+    - d7_taxonomy_vocabulary

core/modules/content_translation/migrations/d7_language_content_comment_settings.yml

@@ -0,0 +1,55 @@
+id: d7_language_content_comment_settings
+label: Drupal 7 language content comment settings
+migration_tags:
+  - Drupal 7
+  - Configuration
+  - Multilingual
+source:
+  plugin: d7_language_content_settings
+  constants:
+    target_type: comment
+process:
+  target_bundle:
+    -
+      plugin: migration_lookup
+      migration: d7_comment_type
+      no_stub: true
+      source:
+        - type
+    -
+      plugin: skip_on_empty
+      method: row
+  target_entity_type_id: constants/target_type
+  default_langcode:
+    -
+      plugin: static_map
+      source: language_content_type
+      map:
+        0: site_default
+        1: current_interface
+        2: current_interface
+        4: current_interface
+      default_value: NULL
+    -
+      plugin: skip_on_empty
+      method: row
+  language_alterable:
+    plugin: static_map
+    source: language_content_type
+    map:
+      0: false
+      1: true
+      2: true
+      4: true
+  third_party_settings/content_translation/enabled:
+    plugin: content_translation_enabled_setting
+    source:
+      - language_content_type
+      - entity_translation_entity_types
+      - constants/target_type
+destination:
+  plugin: entity:language_content_settings
+migration_dependencies:
+  required:
+    - language
+    - d7_comment_type

core/modules/content_translation/migrations/d7_menu_links_localized.yml

@@ -0,0 +1,46 @@
+# cspell:ignore mlid
+id: d7_menu_links_localized
+label: Menu links
+migration_tags:
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: d7_menu_link_localized
+  constants:
+    bundle: menu_link_content
+process:
+  skip_translation:
+    plugin: skip_on_empty
+    method: row
+    source: skip_source_translation
+  exists:
+    -
+      plugin: migration_lookup
+      migration: d7_menu_links
+      source: mlid
+    -
+      plugin: skip_on_empty
+      method: row
+  id: mlid
+  langcode: language
+  title: link_title
+  description: description
+  menu_name:
+    -
+      plugin: migration_lookup
+      migration: d7_menu
+      source: menu_name
+    -
+      plugin: skip_on_empty
+      method: row
+destination:
+  plugin: entity:menu_link_content
+  no_stub: true
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d7_language_content_menu_settings
+    - d7_menu_links

core/modules/content_translation/migrations/d7_menu_links_translation.yml

@@ -0,0 +1,51 @@
+# cspell:ignore mlid
+id: d7_menu_links_translation
+label: Menu links
+migration_tags:
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: d7_menu_link_translation
+process:
+  exists:
+    -
+      plugin: migration_lookup
+      migration: d7_menu_links
+      source: mlid
+    -
+      plugin: skip_on_empty
+      method: row
+  id: mlid
+  # Use the language from the locales_target table.
+  langcode: language
+  title:
+    -
+      plugin: callback
+      source:
+        - title_translated
+        - link_title
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  description:
+    -
+      plugin: callback
+      source:
+        - description_translated
+        - description
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+destination:
+  plugin: entity:menu_link_content
+  default_bundle: menu_link_content
+  no_stub: true
+  translations: true
+migration_dependencies:
+  required:
+    - language
+    - d7_language_content_menu_settings
+    - d7_menu_links

core/modules/content_translation/migrations/d7_node_entity_translation.yml

@@ -0,0 +1,36 @@
+id: d7_node_entity_translation
+label: Node entity translations
+migration_tags:
+  - Drupal 7
+  - translation
+  - Content
+  - Multilingual
+deriver: Drupal\node\Plugin\migrate\D7NodeDeriver
+source:
+  plugin: d7_node_entity_translation
+process:
+  nid: entity_id
+  type: type
+  langcode: language
+  title: title
+  uid: uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+  content_translation_source: source
+  # Boolean indicating whether this translation needs to be updated.
+  content_translation_outdated: translate
+destination:
+  plugin: entity:node
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d7_entity_translation_settings
+    - d7_node

core/modules/content_translation/migrations/d7_node_translation.yml

@@ -0,0 +1,44 @@
+# cspell:ignore tnid
+id: d7_node_translation
+label: Node translations
+migration_tags:
+  - Drupal 7
+  - translation
+  - Content
+  - Multilingual
+class: Drupal\node\Plugin\migrate\D7NodeTranslation
+deriver: Drupal\node\Plugin\migrate\D7NodeDeriver
+source:
+  plugin: d7_node
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the nid field to allow incremental migrations.
+  nid: tnid
+  type: type
+  langcode:
+    plugin: default_value
+    source: language
+    default_value: "und"
+  title: title
+  uid: node_uid
+  status: status
+  created: created
+  changed: changed
+  promote: promote
+  sticky: sticky
+  revision_uid: revision_uid
+  revision_log: log
+  revision_timestamp: timestamp
+  content_translation_source: source_langcode
+destination:
+  plugin: entity:node
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - d7_user
+    - d7_node_type
+    - language
+  optional:
+    - d7_field_instance

core/modules/content_translation/migrations/d7_taxonomy_term_entity_translation.yml

@@ -0,0 +1,33 @@
+id: d7_taxonomy_term_entity_translation
+label: Taxonomy term entity translations
+migration_tags:
+  - Drupal 7
+  - translation
+  - Content
+  - Multilingual
+deriver: Drupal\taxonomy\Plugin\migrate\D7TaxonomyTermDeriver
+source:
+  plugin: d7_taxonomy_term_entity_translation
+process:
+  tid: entity_id
+  name: name
+  description/value: description
+  description/format: format
+  langcode: language
+  status: status
+  content_translation_source: source
+  content_translation_outdated: translate
+  content_translation_uid: uid
+  content_translation_created: created
+  changed: changed
+destination:
+  plugin: entity:taxonomy_term
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d7_entity_translation_settings
+    - d7_taxonomy_term
+  optional:
+    - d7_language_content_taxonomy_vocabulary_settings

core/modules/content_translation/migrations/d7_taxonomy_term_localized_translation.yml

@@ -0,0 +1,49 @@
+# cspell:ignore ltlanguage
+id: d7_taxonomy_term_localized_translation
+label: Taxonomy localized term translations
+migration_tags:
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: d7_term_localized_translation
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the tid field to allow incremental migrations.
+  tid: tid
+  # Use the language from the locales_target table.
+  langcode: ltlanguage
+  vid:
+    plugin: migration_lookup
+    migration: d7_taxonomy_vocabulary
+    source: vid
+  name:
+    -
+      plugin: callback
+      source:
+        - name_translated
+        - name
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+  description:
+    -
+      plugin: callback
+      source:
+        - description_translated
+        - description
+      callable: array_filter
+    -
+      plugin: callback
+      callable: current
+destination:
+  plugin: entity:taxonomy_term
+  translations: true
+migration_dependencies:
+  required:
+    - language
+    - d7_taxonomy_term
+  optional:
+    - d7_language_content_taxonomy_vocabulary_settings

core/modules/content_translation/migrations/d7_taxonomy_term_translation.yml

@@ -0,0 +1,46 @@
+id: d7_taxonomy_term_translation
+label: Taxonomy terms
+migration_tags:
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: d7_taxonomy_term_translation
+  translations: true
+process:
+  # If you are using this file to build a custom migration consider removing
+  # the tid field to allow incremental migrations.
+  tid: tid
+  langcode: language
+  vid:
+    plugin: migration_lookup
+    migration: d7_taxonomy_vocabulary
+    source: vid
+  name: name
+  'description/value': description
+  'description/format': format
+  weight: weight
+  # Only attempt to stub real (non-zero) parents.
+  parent_id:
+    -
+      plugin: skip_on_empty
+      method: process
+      source: parent
+    -
+      plugin: migration_lookup
+      migration: d7_taxonomy_term
+  parent:
+    plugin: default_value
+    default_value: 0
+    source: '@parent_id'
+  changed: timestamp
+destination:
+  plugin: entity:taxonomy_term
+  destination_module: content_translation
+  translations: true
+migration_dependencies:
+  required:
+    - language
+    - d7_taxonomy_term
+  optional:
+    - d7_language_content_taxonomy_vocabulary_settings

core/modules/content_translation/migrations/d7_user_entity_translation.yml

@@ -0,0 +1,27 @@
+id: d7_user_entity_translation
+label: User accounts entity translations
+migration_tags:
+  - Drupal 7
+  - translation
+  - Content
+  - Multilingual
+class: Drupal\user\Plugin\migrate\User
+source:
+  plugin: d7_user_entity_translation
+process:
+  uid: entity_id
+  langcode: language
+  content_translation_source: source
+  content_translation_uid: uid
+  content_translation_status: status
+  content_translation_outdated: translate
+  content_translation_created: created
+destination:
+  plugin: entity:user
+  translations: true
+  destination_module: content_translation
+migration_dependencies:
+  required:
+    - language
+    - d7_entity_translation_settings
+    - d7_user

core/modules/content_translation/migrations/node_translation_menu_links.yml

@@ -0,0 +1,126 @@
+# cspell:ignore mlid plid
+id: node_translation_menu_links
+label: Node Translations Menu links
+audit: true
+migration_tags:
+  - Drupal 6
+  - Drupal 7
+  - Content
+  - Multilingual
+source:
+  plugin: menu_link
+  constants:
+    entity_prefix: 'entity:'
+    node_prefix: 'node/'
+process:
+  id: mlid
+  title: link_title
+  description: description
+  menu_name:
+    -
+      plugin: migration_lookup
+      # The menu migration is in the system module.
+      migration:
+        - d6_menu
+        - d7_menu
+      source: menu_name
+    -
+      plugin: skip_on_empty
+      method: row
+    -
+      plugin: static_map
+      map:
+        management: admin
+      bypass: true
+  # In this process pipeline, given a menu link path that might be for a
+  # translated node which has been merged with the default language node, we are
+  # trying to determine the new node ID, that is the ID of the default language
+  # node.
+  new_nid:
+    -
+      # If the path is of the form "node/<ID>" and is not routed, we will get
+      # back a URI of the form "base:node/<ID>".
+      plugin: link_uri
+      source: link_path
+      validate_route: false
+    -
+      # Isolate the node ID.
+      plugin: explode
+      delimiter: 'base:node/'
+    -
+      # Extract the node ID.
+      plugin: extract
+      default: false
+      index:
+        - 1
+    -
+      # Skip row if node ID is empty.
+      plugin: skip_on_empty
+      method: row
+    -
+      # With the old node ID in hand, lookup in the d6_node_translation or
+      # d7_node_translation mapping tables to find the new node ID.
+      plugin: migration_lookup
+      migration:
+        - d6_node_complete
+        - d7_node_complete
+        - d6_node_translation
+        - d7_node_translation
+      no_stub: true
+    -
+      # Skip row if the new node ID is empty.
+      plugin: skip_on_empty
+      method: row
+    -
+      # Extract the node ID. The migration lookup will return an array with two
+      # items, the new node ID and the translation langcode. We need the node ID
+      # which is at index 0.
+      plugin: extract
+      index:
+        - 0
+  # This will be used in the "link/uri" and "route" processes below.
+  link_path:
+    plugin: concat
+    source:
+      - 'constants/node_prefix'
+      - '@new_nid'
+  link/uri:
+    plugin: concat
+    source:
+      - 'constants/entity_prefix'
+      - '@link_path'
+  link/options: options
+  route:
+    plugin: route
+    source:
+      - '@link_path'
+      - options
+  route_name: '@route/route_name'
+  route_parameters: '@route/route_parameters'
+  url: '@route/url'
+  options: '@route/options'
+  external: external
+  weight: weight
+  expanded: expanded
+  enabled: enabled
+  parent:
+    plugin: menu_link_parent
+    source:
+      - plid
+      - '@menu_name'
+      - parent_link_path
+  changed: updated
+destination:
+  plugin: entity:menu_link_content
+  default_bundle: menu_link_content
+  no_stub: true
+migration_dependencies:
+  required:
+    - language
+  optional:
+    - d6_menu
+    - d6_menu_links
+    - d6_node_translation
+    - d7_menu
+    - d7_menu_links
+    - d7_node_translation

core/modules/content_translation/migrations/state/content_translation.migrate_drupal.yml

@@ -0,0 +1,35 @@
+finished:
+  6:
+    i18n: content_translation
+    i18nblocks:
+      - block
+      - block_content
+      - content_translation
+    i18ncontent: content_translation
+    i18nmenu:
+      - content_translation
+      - menu_link_content
+    i18npoll: content_translation
+    i18nstrings: content_translation
+    i18nsync: content_translation
+    i18ntaxonomy: content_translation
+    locale: content_translation
+    menu: content_translation
+    # Node revision translations.
+    node: content_translation
+    taxonomy: content_translation
+  7:
+    entity_translation: content_translation
+    i18n: content_translation
+    i18n_block:
+      - block
+      - block_content
+      - content_translation
+    locale: content_translation
+    menu: content_translation
+    # menu links.
+    i18n_menu: content_translation
+    i18n_string: content_translation
+    i18n_taxonomy: content_translation
+    # Node revision translations.
+    node: content_translation