Added readme

packages/cron-job/README.md

@@ -0,0 +1,65 @@
+# Cron Job
+
+This library is used to manage and process cron jobs.
+
+## Configuration
+
+The package can be enabled as follows:
+> **_NOTE:_** Below are the default configs which can be overwritten by your needs.
+
+### Framework extra
+
+```yaml
+draw_framework_extra:
+  # ...
+  cron_job:
+    enabled: true
+    doctrine:
+      orm:
+        mappings:
+          DrawCronJob:
+            is_bundle: false
+            type: attribute
+            dir: ...
+            prefix: Draw\Component\CronJob\Entity
+```
+
+> **_NOTE:_** The following services are available:
+> - **draw.cron_job.command.queue_cron_job_by_name_command**: Draw\Component\CronJob\Command\QueueCronJobByNameCommand
+> - **draw.cron_job.command.queue_due_cron_jobs_command**: Draw\Component\CronJob\Command\QueueDueCronJobsCommand
+> - **draw.cron_job.cron_job_processor**: Draw\Component\CronJob\CronJobProcessor
+> - **draw.cron_job.message_handler.execute_cron_job_message_handler**: Draw\Component\CronJob\MessageHandler\ExecuteCronJobMessageHandler
+
+### Sonata integration
+
+```yaml
+draw_sonata_integration:
+  cron_job:
+    enabled: true
+    admin:
+      cron_job:
+        group: Cron Job
+        entity_class: Draw\Component\CronJob\Entity\CronJob
+        controller_class: Draw\Bundle\SonataIntegrationBundle\CronJob\Controller\CronJobController
+        icon: fas fa-clock
+        label: Cron Job
+        pager_type: simple
+        show_in_dashboard: true
+        translation_domain: SonataAdminBundle
+      cron_job_execution:
+        group: Cron Job
+        entity_class: Draw\Component\CronJob\Entity\CronJobExecution
+        controller_class: sonata.admin.controller.crud
+        icon: null
+        label: Cron Job Execution
+        pager_type: simple
+        show_in_dashboard: true
+        translation_domain: SonataAdminBundle
+```
+
+## Usage
+
+Once the package is enabled, a new admin page will be available - **Cron Job**. The package also provides
+2 console commands:
+- **draw:cron-job:queue-due** - it is used to process due cron jobs by their configs; it can be configured in the **crontab**
+- **draw:cron-job:queue-by-name** - it allows to manually process a cron job by its name passed as an argument