Add possibility to notify by mail in case of attachment processing failure

base_attachment_queue/__manifest__.py

@@ -19,6 +19,7 @@
         'security/ir.model.access.csv',
         'data/cron.xml',
         'data/ir_config_parameter.xml',
+        'data/mail_template.xml',
     ],
     'demo': [
         'demo/attachment_metadata_demo.xml'

base_attachment_queue/data/mail_template.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo noupdate="1">
+
+        <record id="attachment_failure_notification" model="mail.template">
+            <field name="email_to">${object.failure_emails}</field>
+            <field name="name">Attachment Failure notification</field>
+            <field name="subject">The attachment ${object.name} has failed</field>
+            <field name="model_id" ref="base_attachment_queue.model_ir_attachment_metadata"/>
+            <field name="body_html"><![CDATA[
+                <p style="margin:0px 0px 10px 0px;font-size:13px;font-family:&quot;Lucida Grande&quot;, Helvetica, Verdana, Arial, sans-serif;">Hello,<br><br></p>
+                <p style="margin:0px 0px 10px 0px;font-size:13px;font-family:&quot;Lucida Grande&quot;, Helvetica, Verdana, Arial, sans-serif;">The attachment ${object.name} has failed with the following error message : <br>${object.state_message}<br></p><p style="margin:0px 0px 10px 0px;font-size:13px;font-family:&quot;Lucida Grande&quot;, Helvetica, Verdana, Arial, sans-serif;"></p>
+                <p style="margin:0px 0px 10px 0px;font-size:13px;font-family:&quot;Lucida Grande&quot;, Helvetica, Verdana, Arial, sans-serif;">Regards,<br></p>
+            ]]></field>
+        </record>
+
+</odoo>

base_attachment_queue/models/attachment.py

@@ -26,6 +26,20 @@ class IrAttachmentMetadata(models.Model):
         ('done', 'Done'),
         ], readonly=False, required=True, default='pending')
     state_message = fields.Text()
+    failure_emails = fields.Char(
+        compute='_compute_failure_emails',
+        string="Failure Emails",
+        help="list of email (separated by comma) which should be notified in "
+             "case of failure")
+
+    def _compute_failure_emails(self):
+        for attach in self:
+            attach.failure_emails = attach._get_failure_emails()
+
+    def _get_failure_emails(self):
+        # to be overriden in submodules implementing the file_type
+        self.ensure_one()
+        return ""
 
     @api.model
     def run_attachment_metadata_scheduler(self, domain=None):
@@ -47,6 +61,8 @@ class IrAttachmentMetadata(models.Model):
         """
         Run the process for each attachment metadata
         """
+        failure_tmpl = self.env.ref(
+            'base_attachment_queue.attachment_failure_notification')
         for attachment in self:
             with api.Environment.manage():
                 with registry(self.env.cr.dbname).cursor() as new_cr:
@@ -63,6 +79,9 @@ class IrAttachmentMetadata(models.Model):
                             'state': 'failed',
                             'state_message': str(e),
                         })
+                        emails = attach.failure_emails
+                        if emails:
+                            failure_tmpl.send_mail(attach.id)
                         attach.env.cr.commit()
                     else:
                         vals = {