Wait for pending update method

- Implement wait_for_pending_update method
- Add tests for wait_for_pending_update

lib/meilisearch/index.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
 
 require 'meilisearch/http_request'
+require 'timeout'
 
 module MeiliSearch
-  class Index < HTTPRequest
+  class Index < HTTPRequest # rubocop:disable Metrics/ClassLength
     attr_reader :uid
 
     def initialize(index_uid, url, api_key = nil)
@@ -231,5 +232,16 @@ def accept_new_fields
     def update_accept_new_fields(accept_new_fields)
       http_post "/indexes/#{@uid}/settings/accept-new-fields", accept_new_fields
     end
+
+    def wait_for_pending_update(update_id, timeout_in_ms = 5000, interval_in_ms = 50)
+      Timeout.timeout(timeout_in_ms.to_f / 1000) do
+        loop do
+          get_update = get_update_status(update_id)
+          return get_update if get_update['status'] != 'enqueued'
+
+          sleep interval_in_ms.to_f / 1000
+        end
+      end
+    end
   end
 end

spec/meilisearch/index/wait_for_pending_update_spec.rb

@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+RSpec.describe MeiliSearch::Index do
+  before(:all) do
+    @documents = [
+      { objectId: 123,  title: 'Pride and Prejudice' },
+      { objectId: 456,  title: 'Le Petit Prince' },
+      { objectId: 1,    title: 'Alice In Wonderland' },
+      { objectId: 1344, title: 'The Hobbit' },
+      { objectId: 4,    title: 'Harry Potter and the Half-Blood Prince' },
+      { objectId: 42,   title: 'The Hitchhiker\'s Guide to the Galaxy' }
+    ]
+    client = MeiliSearch::Client.new($URL, $MASTER_KEY)
+    clear_all_indexes(client)
+    @index = client.create_index(uid: 'books', primaryKey: 'objectId')
+  end
+
+  it 'waits for pending update with default values' do
+    response = @index.add_documents(@documents)
+    update_id = response['updateId']
+    status = @index.wait_for_pending_update(update_id)
+    expect(status).to be_a(Hash)
+    expect(status['status']).not_to eq('enqueued')
+  end
+
+  it 'waits for pending update with default values after several updates' do
+    @index.add_documents(@documents)
+    @index.add_documents(@documents)
+    @index.add_documents(@documents)
+    @index.add_documents(@documents)
+    @index.add_documents(@documents)
+    response = @index.add_documents(@documents)
+    update_id = response['updateId']
+    status = @index.wait_for_pending_update(update_id)
+    expect(status).to be_a(Hash)
+    expect(status['status']).not_to eq('enqueued')
+  end
+
+  it 'waits for pending update with custom timeout_in_ms and raises error' do
+    @index.add_documents(@documents)
+    response = @index.add_documents(@documents)
+    update_id = response['updateId']
+    lambda {
+      @index.wait_for_pending_update(update_id, 1)
+    }.should raise_error(Timeout::Error)
+  end
+
+  it 'waits for pending update with custom interval_in_ms and raises error' do
+    @index.add_documents(@documents)
+    response = @index.add_documents(@documents)
+    update_id = response['updateId']
+    lambda {
+      Timeout.timeout(0.1) do
+        @index.wait_for_pending_update(update_id, 5000, 200)
+      end
+    }.should raise_error(Timeout::Error)
+  end
+end