fix: fix hash counter with delimeters containing non-utf8 data

https://jira.railsc.ru/browse/BPC-20533

Gemfile

@@ -1,5 +1,8 @@
+# frozen_string_literal: true
 source 'https://rubygems.org'
 
 gemspec
 
+gem 'nokogiri', '< 1.11.0', require: false
 gem 'parallel', '< 1.21.0'
+gem 'racc', ' < 1.6.0', require: false

lib/redis_counters/hash_counter.rb

@@ -1,5 +1,6 @@
 require 'redis_counters/base_counter'
 require 'redis_counters/clusterize_and_partitionize'
+require 'string_tools'
 
 module RedisCounters
   # Счетчик на основе redis-hash, с возможностью партиционирования и кластеризации значений.
@@ -53,6 +54,7 @@ def partition_data(cluster, partition)
       end
 
       redis.hgetall(key(partition, cluster)).inject(Array.new) do |result, (key, value)|
+        key = key.dup.to_utf8
         values = if delimiter_is_ary
                    if key.include?(new_delim)
                      key.split(new_delim, -1)

redis_counters.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_runtime_dependency 'activesupport', '>= 4.0', '< 5'
+  spec.add_runtime_dependency 'string_tools'
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'

spec/redis_counters/hash_counter_spec.rb

@@ -504,6 +504,27 @@
     end
   end
 
+  context 'when non-utf8 data contains delimeters' do
+    let(:options) do
+      {
+        counter_name:    :test_counter,
+        group_keys:      [:title, :url],
+        partition_keys:  [:date],
+        key_delimiter:   '&',
+        value_delimiter: '|'
+      }
+    end
+    let(:partition) { {title: "Erg\xE4nzendes", url: 'http://example.com', date: '2022-05-04'} }
+
+    before do
+      redis.hincrbyfloat('test_counter&2022-05-04', "Erg\xE4nzendes|http://example.com", 1.0)
+    end
+
+    it 'successfully splits data' do
+      expect(counter.data).to eq([{'value' => 1, 'title' => 'Ergänzendes', 'url' => 'http://example.com'}])
+    end
+  end
+
   context 'when check custom increment' do
     let(:options) { {
       :counter_name => :test_counter,