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fix_index_pointers.rb

require 'httpclient'
require 'json'
require 'uri'

# --------------------------------------
# Edit these variables
HOST = 'http://localhost:9200'
ELASTICSEARCH_USERNAME = 'elastic'
ELASTICSEARCH_PASSWORD = 'changeme'
DRY_RUN = false # don't actually edit anything yet
# --------------------------------------

INDEX_POINTER_INDEX_NAME = '.ent-search-actastic-index_pointers_v2'

client = HTTPClient.new
client.set_auth(nil, ELASTICSEARCH_USERNAME, ELASTICSEARCH_PASSWORD)

host = URI.parse(HOST)
index_pointer_search_uri = URI.join(host, "#{INDEX_POINTER_INDEX_NAME}/_search")

search_response = client.get(index_pointer_search_uri, nil, 'Content-Type' => 'application/json')

recreated_count = 0

index_pointers = JSON.parse(search_response.body).dig('hits', 'hits').select do |result|
  result.fetch('_id').include?('.app-search')
end

puts "There are #{index_pointers.size} records that need to be fixed."
puts

index_pointers.each do |index_pointer|
  index_pointer_id = index_pointer.fetch('_id')
  new_id = index_pointer_id.gsub('app-search', 'ent-search')

  source = index_pointer.fetch('_source')
  new_index_pointer_doc = source.merge(
    'name' => source.fetch('name').gsub('app-search', 'ent-search'),
    'read_weight' => 1.0,
    'write_enabled' => true
  )

  index_pointer_create_uri = URI.join(host, "#{INDEX_POINTER_INDEX_NAME}/_doc/#{URI.encode(new_id)}")

  puts "Creating a new record for index pointer id: #{index_pointer_id}"

  unless DRY_RUN
    create_response = client.put(
      index_pointer_create_uri,
      JSON.dump(new_index_pointer_doc),
      'Content-Type' => 'application/json'
    )

    raise StandardError.new(JSON.parse(create_response.body)) if create_response.status >= 400
  end

  index_pointer_delete_uri = URI.join(host, "#{INDEX_POINTER_INDEX_NAME}/_doc/#{URI.encode(index_pointer_id)}")

  puts "\tDeleting the old record for index pointer id: #{index_pointer_id}"

  unless DRY_RUN
    delete_response = client.delete(index_pointer_delete_uri)

    raise StandardError.new(JSON.parse(delete_response.body)) if delete_response.status >= 400
  end

  recreated_count += 1
end

puts
if DRY_RUN
  puts "Would have recreated #{index_pointers.size} index pointers."
else
  puts "Successfully recreated #{index_pointers.size} index pointers."
end

index_pointer_refresh_uri = URI.join(host, "#{INDEX_POINTER_INDEX_NAME}/_refresh")

puts "Refreshing the index."

refresh_response = client.post(
  index_pointer_refresh_uri,
  '',
  'Content-Type' => 'application/json'
)

raise StandardError.new(JSON.parse(refresh_response.body)) if refresh_response.status >= 400

puts "The underlying Elasticsearch index has been refreshed and documents can now be indexed into your Enterprise Search instance."