Add view, task and post upgrade signal handler to verify all documents for embedded signatures.

mayan/apps/document_signatures/tasks.py

@@ -11,7 +11,7 @@ logger = logging.getLogger(__name__)
 
 
 @app.task(bind=True, ignore_result=True)
-def task_unverify_signatures(self, key_id):
+def task_unverify_key_signatures(self, key_id):
     DetachedSignature = apps.get_model(
         app_label='document_signatures', model_name='DetachedSignature'
     )
@@ -28,7 +28,7 @@ def task_unverify_signatures(self, key_id):
 
 
 @app.task(bind=True, ignore_result=True)
-def task_verify_signatures(self, key_pk):
+def task_verify_key_signatures(self, key_pk):
     Key = apps.get_model(
         app_label='django_gpg', model_name='Key'
     )
@@ -48,3 +48,29 @@ def task_verify_signatures(self, key_pk):
 
     for signature in EmbeddedSignature.objects.filter(key_id__endswith=key.key_id).filter(signature_id__isnull=True):
         signature.save()
+
+
+@app.task(bind=True, ignore_result=True)
+def task_verify_missing_embedded_signature(self):
+    EmbeddedSignature = apps.get_model(
+        app_label='document_signatures', model_name='EmbeddedSignature'
+    )
+
+    for document_version in EmbeddedSignature.objects.unsigned_document_versions():
+        task_verify_document_version.apply_async(
+            kwargs=dict(document_version_pk=document_version.pk)
+        )
+
+
+@app.task(bind=True, ignore_result=True)
+def task_verify_document_version(self, document_version_pk):
+    DocumentVersion = apps.get_model(
+        app_label='documents', model_name='DocumentVersion'
+    )
+
+    EmbeddedSignature = apps.get_model(
+        app_label='document_signatures', model_name='EmbeddedSignature'
+    )
+
+    document_version = DocumentVersion.objects.get(pk=document_version_pk)
+    EmbeddedSignature.objects.create(document_version=document_version)