Simpan method ini di ~/.mongoshrc.js

.mongoshrc.js

function copyCollections(
  sourceDbName,
  collectionNames = [],
  targetDbName = "tenant_operation",
  batchSize = 1000
) {
  const sourceDb = db.getSiblingDB(sourceDbName);
  const targetDb = db.getSiblingDB(targetDbName);

  for (const collectionName of collectionNames) {
    targetDb.getCollection(collectionName).drop();

    let totalMoved = 0;
    const cursor = sourceDb.getCollection(collectionName).find();

    while (cursor.hasNext()) {
      const batch = [];

      // Mengambil batch dokumen
      for (let i = 0; i < batchSize && cursor.hasNext(); i++) {
        batch.push(cursor.next());
      }

      if (batch.length > 0) {
        targetDb.getCollection(collectionName).insertMany(batch);
        totalMoved += batch.length;
        print(`Copy ${batch.length} documents... Total copied: ${totalMoved}`);
      }
    }
    print(
      `Successfully copied a total of ${totalMoved} documents from ${sourceDbName}.${collectionName} to ${targetDbName}.${collectionName}.`
    );
  }
}