Migration Script with Limit/Looping

migrate.sh

#!/bin/bash

migrate_loop()
{
  # Better readability with separation.
  echo "========================";
  # Get the output of the drush status.
  drush_output=$(drush ms "$1" --format string);

  # Split output string into an array.
  output=( $drush_output )
  # Output the status items.
  for index in "${!output[@]}"
  do
    if [ "$index" == "3" ]
    then
        echo "Migration: ${output[index]}";
    fi

    if [ "$index" == "4" ]
    then
        echo "Status: ${output[index]}";
    fi

    if [ "$index" == "5" ]
    then
        echo "Total: ${output[index]}";
    fi

    if [ "$index" == "6" ]
    then
        echo "Imported: ${output[index]}";
    fi

    if [ "$index" == "7" ]
    then
        echo "Remaining: ${output[index]}";
    fi
  done

  # Check if all items were imported.
  if [ "${output[7]}" == "0" ] || [ "${output[7]}" -lt "0" ]
  then
    echo "No items left to import.";
  else
    echo "There are ${output[7]} remaining ${output[3]} items to be imported.";
    echo "Running command: drush migrate:import $1";
    echo "...";
    # Run the migration until it stops.
    drush migrate:reset "$1";
    drush migrate:import "$1" --feedback 1000 --limit 10000;
    # Run the check on this migration again.
    migrate_loop "$1";
  fi
}
if [ "$1" == "reset" ]; then
  printf "\\nResetting migration status...\\n\\n"
  drush cr >/dev/null 2>&1
  drush migrate:status --format=var_export | grep -o "\\w*example_\\w*" | grep -v "example_migration" | xargs -n1 drush migrate:stop
  drush migrate:status --format=var_export | grep -o "\\w*example_\\w*" | grep -v "example_migration" | xargs -n1 drush migrate:reset-status
  printf "\\n\\nMigration status reset. Run ./scripts/migrate.sh to start migrating data or ./scripts/migrate.sh rollback to rollback data as well.\\n\\n"
elif [ "$1" == "rollback" ]; then
  drush migrate:status --format=var_export | grep -o "\\w*example_\\w*" | grep -v "example_migration" | xargs -n1 drush migrate:stop
  drush migrate:status --format=var_export | grep -o "\\w*example_\\w*" | grep -v "example_migration" | xargs -n1 drush migrate:reset-status
  drush migrate:status --format=var_export | grep -o "\\w*example_\\w*" | grep -v "example_migration" | xargs -n1 drush migrate:rollback
  printf "\\n\\nMigration rolled back. Run ./scripts/migrate.sh to start migrating data.\\n\\n"
else
  printf "Updating database and entity definitions...\\n"
  drush updb -y >/dev/null 2>&1
  drush entup -y >/dev/null 2>&1
  migrate_loop example_migration
  migrate_loop another_example_migration
  migrate_loop my_example_migration
fi