ENH: Add blackhole output bot

CHANGELOG.md

@@ -22,6 +22,7 @@ CHANGELOG
 
 #### Outputs
 - added `intelmq.bots.experts.mcafee.output_esm` (1265).
+- added `intelmq.bots.outputs.blackhole` (#1279).
 
 ### Documentation
 

docs/Bots.md

@@ -1187,6 +1187,20 @@ Note that SIGHUPs and reloads interrupt the sleeping.
 <a name="outputs"></a>
 ## Outputs
 
+### Blackhole
+
+This output bot discards all incoming messages.
+
+#### Information
+* `name`: blackhole
+* `lookup`: no
+* `public`: yes
+* `cache`: no
+* `description`: discards messages
+
+* * *
+
+
 ### File
 
 #### Information:

intelmq/bots/BOTS

@@ -806,6 +806,11 @@
                 "username": "<your amqp username>"
             }
         },
+        "Blackhole": {
+            "description": "AMQP Topic is the bot responsible to send events to a AMQP topic exchange.",
+            "module": "intelmq.bots.outputs.blackhole.output",
+            "parameters": {}
+        },
         "Elasticsearch": {
             "description": "Elasticsearch is the bot responsible to send events to a elasticsearch.",
             "module": "intelmq.bots.outputs.elasticsearch.output",

intelmq/bots/outputs/blackhole/output.py

@@ -0,0 +1,12 @@
+# -*- coding: utf-8 -*-
+from intelmq.lib.bot import Bot
+
+
+class BlackholeOutputBot(Bot):
+
+    def process(self):
+        self.receive_message()
+        self.acknowledge_message()
+
+
+BOT = BlackholeOutputBot

intelmq/tests/bots/outputs/blackhole/test_output.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+import unittest
+
+import intelmq.lib.test as test
+from intelmq.bots.outputs.blackhole.output import BlackholeOutputBot
+
+
+class TestBlackholeOutputBot(test.BotTestCase, unittest.TestCase):
+
+    @classmethod
+    def set_bot(cls):
+        cls.bot_reference = BlackholeOutputBot
+
+    def test_event(self):
+        self.run_bot()
+        self.assertOutputQueueLen(0)
+
+
+
+if __name__ == '__main__':  # pragma: no cover
+    unittest.main()