inital commit

migrate_json_source.drush.inc

+<?php
+
+/**
+ * @file
+ * Drush integration for migrate_json_source.
+ */
+
+function migrate_json_source_drush_command() {
+  $commands['entity-json'] = [
+    'description' => 'Get JSON for an entity.',
+    'aliases' => ['ejs'],
+    'arguments' => [
+      'entity_type' => 'The entity type',
+      'ids' => 'The entity IDs',
+    ],
+    'options' => [
+      'all' => 'Get all entities of the specified type.'
+    ],
+  ];
+
+  return $commands;
+}
+
+/**
+ * Drush callback for entity-json command.
+ */
+function drush_migrate_json_source_entity_json($entity_type = NULL, $ids = NULL) {
+  if (!$entity_type) {
+    return drush_set_error('', dt("Must specify entity type."));
+  }
+
+  try {
+    $storage = \Drupal::entityTypeManager()->getStorage($entity_type);
+  }
+  catch (\Exception $e) {
+    return drush_set_error('', dt("Invalid entity type."));
+  }
+
+  $all = drush_get_option('all', FALSE);
+  $ids = array_filter(explode(',', $ids));
+
+  if ($all) {
+    $output = [];
+    foreach ($storage->loadMultiple() as $entity) {
+      $output[$entity->id()] = $entity->toArray();
+    }
+    drush_print(json_encode($output, JSON_PRETTY_PRINT));
+    return;
+  }
+
+  if (!$all && empty($ids)) {
+    return drush_set_error('', dt("Must specify entity IDs or use --all option."));
+  }
+
+  // Single entity.
+  if (count($ids) == 1) {
+    $id = reset($ids);
+    $entity = $storage->load($id);
+    if (!$entity) {
+      $args = [
+        '@type' => $entity_type,
+        '@id' => $id,
+      ];
+      return drush_set_error('', dt("Unable to load entity @type:@id", $args));
+    }
+    drush_print(json_encode($entity->toArray(), JSON_PRETTY_PRINT));
+    return;
+  }
+
+  // Multiple entities.
+  $output = [];
+  foreach ($storage->loadMultiple($ids) as $entity) {
+    $output[$entity->id()] = $entity->toArray();
+  }
+  drush_print(json_encode($output, JSON_PRETTY_PRINT));
+}

migrate_json_source.info.yml

+type: module
+name: Migrate JSON Source
+description: 'A migration source for JSON encoded data files.'
+package: Migration
+core: 8.x

src/JsonGlobIterator.php

+<?php
+
+namespace Drupal\migrate_json_source;
+
+use GlobIterator;
+
+class JsonGlobIterator extends GlobIterator {
+
+  public function __construct($path) {
+    $path = rtrim($path, '/');
+    $path = $path . '/*.json';
+    parent::__construct($path);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function current() {
+    /** @var \SplFileInfo $current */
+    $current = parent::current();
+    $data = json_decode(file_get_contents($current->getPathname()), TRUE);
+    if (!is_array($data)) {
+      $data = [];
+    }
+    $data['id'] = $current->getBasename();
+    return $data;
+  }
+
+}

src/Plugin/migrate/source/JsonFilesetSource.php

+<?php
+
+namespace Drupal\migrate_json_source\Plugin\migrate\source;
+
+use Drupal\Component\Plugin\ConfigurablePluginInterface;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\migrate\Plugin\migrate\source\SourcePluginBase;
+use Drupal\migrate\Row;
+use Drupal\migrate_json_source\JsonGlobIterator;
+use FilesystemIterator;
+use GlobIterator;
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+
+/**
+ * JSON file set source.
+ *
+ * @MigrateSource(
+ *   id = "json_fileset",
+ *   source_module = "migrate_json_source"
+ * )
+ */
+class JsonFilesetSource extends SourcePluginBase implements ConfigurablePluginInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fields() {
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __toString() {
+    return 'JSON encoded file set.';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getIds() {
+    return [
+      'id' => [
+        'type' => 'string',
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function initializeIterator() {
+    return new JsonGlobIterator($this->getConfiguration()['path']);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfiguration() {
+    return $this->configuration;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setConfiguration(array $configuration) {
+    $this->configuration = NestedArray::mergeDeep(
+      $this->defaultConfiguration(),
+      $configuration
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function calculateDependencies() {
+    return [];
+  }
+
+}