Index templates support (#1343)

* Initial implementation of index template support #916

� Conflicts:
�	tests/Unit/DependencyInjection/ConfigurationTest.php
�	tests/Unit/Elastica/ClientTest.php

* Minor fixes

* Added documentation about index templates

doc/index.md

@@ -9,6 +9,7 @@ Available documentation for FOSElasticaBundle
 * [Using a Serializer](serializer.md)
 * [Types](types.md)
 * [Provider](provider.md)
+* [Index templates](templates.md)
 
 Cookbook Entries
 ----------------

doc/templates.md

@@ -0,0 +1,47 @@
+Index templates
+================
+
+Index templates allow you to define templates that will automatically be applied when new indices are created 
+(see more in [official documentation](https://www.elastic.co/guide/en/elasticsearch/reference/6.6/indices-templates.html)).
+Index Templates widely is used to create historically indexes:
+
+* storing logs (Kibana) to prevent index growing because of incorrectly mapped fields
+* metrics (Marvel) to archive or delete old information
+
+Here's example on how to configure index templates:
+
+```yaml
+# app/config/config.yml
+
+fos_elastica:
+    index_templates:
+        <name>:
+            client: default
+            template_name: <template name>
+            template: some_index_*
+            settings:
+                number_of_shards: 1
+                number_of_replicas: 0
+            types:
+                auto_suggest:
+                    mappings:
+                        <field name>:  <params>
+                         ...
+```
+
+Index template is similar to index configuration and has the same fields like `types`, `settings`, `client`, etc. with additional fields:
+
+1. `template_name` - template name. If omitted then used key (`<name>`) of `index_templates` section. Example: `template_1`
+2. `template` - template pattern. Example: `te*` or `bar*`
+
+To apply templates changes, you should run `fos:elastica:reset-templates` command:
+
+* `--index` - index template name to reset. If no index template name specified than all templates will be reset
+* `--force-delete` - will delete all indexes that match index templates patterns. Aware that pattern may match various indexes.
+
+You must run the following command to sync templates configuration on ES server with YAML configurations:
+```bash
+php bin/console fos:elastica:reset-templates
+```
+
+You can build-in this command into the deployment process to automate template configuration sync.

src/Command/ResetTemplatesCommand.php

@@ -0,0 +1,90 @@
+<?php
+
+/*
+ * This file is part of the FOSElasticaBundle package.
+ *
+ * (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FOS\ElasticaBundle\Command;
+
+use FOS\ElasticaBundle\Index\TemplateResetter;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Question\ConfirmationQuestion;
+
+/**
+ * Reset search indexes templates.
+ */
+final class ResetTemplatesCommand extends Command
+{
+    protected static $defaultName = 'fos:elastica:reset-templates';
+
+    /** @var TemplateResetter */
+    private $resetter;
+
+    public function __construct(
+        TemplateResetter $resetter
+    ) {
+        parent::__construct();
+
+        $this->resetter = $resetter;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setName('fos:elastica:reset-templates')
+            ->addOption(
+                'index',
+                null,
+                InputOption::VALUE_REQUIRED,
+                'The index template to reset. If no index template name specified than all templates will be reset'
+            )
+            ->addOption(
+                'force-delete',
+                null,
+                InputOption::VALUE_NONE,
+                'Delete all indexes that matches index templates patterns. ' .
+                'Aware that pattern may match various indexes.'
+            )
+            ->setDescription('Reset search indexes templates')
+        ;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $indexTemplate = $input->getOption('index');
+        $deleteByPattern = $input->getOption('force-delete');
+
+        if ($deleteByPattern) {
+            $helper = $this->getHelper('question');
+            $question = new ConfirmationQuestion('You are going to remove all template indexes. Are you sure?', false);
+
+            if (!$helper->ask($input, $output, $question)) {
+                return 1;
+            }
+        }
+
+        if (null !== $indexTemplate) {
+            $output->writeln(sprintf('<info>Resetting template</info> <comment>%s</comment>', $indexTemplate));
+            $this->resetter->resetIndex($indexTemplate, $deleteByPattern);
+        } else {
+            $output->writeln('<info>Resetting all templates</info>');
+            $this->resetter->resetAllIndexes($deleteByPattern);
+        }
+
+        return 0;
+    }
+}

src/Configuration/IndexConfig.php

@@ -20,36 +20,9 @@
 
 namespace FOS\ElasticaBundle\Configuration;
 
-class IndexConfig
+class IndexConfig implements IndexConfigInterface
 {
-    /**
-     * The name of the index for ElasticSearch.
-     *
-     * @var string
-     */
-    private $elasticSearchName;
-
-    /**
-     * The internal name of the index. May not be the same as the name used in ElasticSearch,
-     * especially if aliases are enabled.
-     *
-     * @var string
-     */
-    private $name;
-
-    /**
-     * An array of settings sent to ElasticSearch when creating the index.
-     *
-     * @var array
-     */
-    private $settings;
-
-    /**
-     * All types that belong to this index.
-     *
-     * @var TypeConfig[]
-     */
-    private $types;
+    use IndexConfigTrait;
 
     /**
      * Indicates if the index should use an alias, allowing an index repopulation to occur
@@ -75,54 +48,6 @@ public function __construct($name, array $types, array $config)
         $this->useAlias = isset($config['useAlias']) ? $config['useAlias'] : false;
     }
 
-    /**
-     * @return string
-     */
-    public function getElasticSearchName()
-    {
-        return $this->elasticSearchName;
-    }
-
-    /**
-     * @return string
-     */
-    public function getName()
-    {
-        return $this->name;
-    }
-
-    /**
-     * @return array
-     */
-    public function getSettings()
-    {
-        return $this->settings;
-    }
-
-    /**
-     * @param string $typeName
-     *
-     * @return TypeConfig
-     *
-     * @throws \InvalidArgumentException
-     */
-    public function getType($typeName)
-    {
-        if (!array_key_exists($typeName, $this->types)) {
-            throw new \InvalidArgumentException(sprintf('Type "%s" does not exist on index "%s"', $typeName, $this->name));
-        }
-
-        return $this->types[$typeName];
-    }
-
-    /**
-     * @return \FOS\ElasticaBundle\Configuration\TypeConfig[]
-     */
-    public function getTypes()
-    {
-        return $this->types;
-    }
-
     /**
      * @return bool
      */

src/Configuration/IndexConfigInterface.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace FOS\ElasticaBundle\Configuration;
+
+/**
+ * Interface Index config interface
+ *
+ * @author Dmitry Balabka <dmitry.balabka@intexsys.lv>
+ */
+interface IndexConfigInterface
+{
+    /**
+     * @return string
+     */
+    public function getElasticSearchName();
+
+    /**
+     * @return string
+     */
+    public function getName();
+
+    /**
+     * @return array
+     */
+    public function getSettings();
+
+    /**
+     * @param string $typeName
+     *
+     * @return TypeConfig
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function getType($typeName);
+
+    /**
+     * @return \FOS\ElasticaBundle\Configuration\TypeConfig[]
+     */
+    public function getTypes();
+}

src/Configuration/IndexConfigTrait.php

@@ -0,0 +1,96 @@
+<?php
+/*
+ * This file is part of the OpCart software.
+ *
+ * (c) 2015, OpticsPlanet, Inc
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FOS\ElasticaBundle\Configuration;
+
+/**
+ * Index configuration trait class
+ *
+ * @author Dmitry Balabka <dmitry.balabka@intexsys.lv>
+ */
+trait IndexConfigTrait
+{
+    /**
+     * The name of the index for ElasticSearch.
+     *
+     * @var string
+     */
+    private $elasticSearchName;
+
+    /**
+     * The internal name of the index. May not be the same as the name used in ElasticSearch,
+     * especially if aliases are enabled.
+     *
+     * @var string
+     */
+    private $name;
+
+    /**
+     * An array of settings sent to ElasticSearch when creating the index.
+     *
+     * @var array
+     */
+    private $settings;
+
+    /**
+     * All types that belong to this index.
+     *
+     * @var TypeConfig[]
+     */
+    private $types;
+
+    /**
+     * @return string
+     */
+    public function getElasticSearchName()
+    {
+        return $this->elasticSearchName;
+    }
+
+    /**
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * @return array
+     */
+    public function getSettings()
+    {
+        return $this->settings;
+    }
+
+    /**
+     * @param string $typeName
+     *
+     * @return TypeConfig
+     *
+     * @throws \InvalidArgumentException
+     */
+    public function getType($typeName)
+    {
+        if (!array_key_exists($typeName, $this->types)) {
+            throw new \InvalidArgumentException(sprintf('Type "%s" does not exist on index "%s"', $typeName, $this->name));
+        }
+
+        return $this->types[$typeName];
+    }
+
+    /**
+     * @return \FOS\ElasticaBundle\Configuration\TypeConfig[]
+     */
+    public function getTypes()
+    {
+        return $this->types;
+    }
+}