Add missing headers to the inspection callback

Somehow, it has worked correctly for years, but now I've discovered that
the new inspection is (no longer?) tolerant to the missing header.

While here, copy all headers from the heartbeat code.

Change-Id: I9e5c609eb4435e520bc225dea08aedfdf169744b

ironic_python_agent/inspector.py

@@ -133,6 +133,13 @@ def call_inspector(data, failures):
     data = encoder.encode(data)
     verify, cert = utils.get_ssl_client_options(CONF)
 
+    headers = {
+        'Content-Type': 'application/json',
+        'Accept': 'application/json',
+    }
+    if CONF.global_request_id:
+        headers["X-OpenStack-Request-ID"] = CONF.global_request_id
+
     @tenacity.retry(
         retry=tenacity.retry_if_exception_type(
             (requests.exceptions.ConnectionError,
@@ -143,7 +150,7 @@ def call_inspector(data, failures):
         reraise=True)
     def _post_to_inspector():
         inspector_resp = requests.post(
-            CONF.inspection_callback_url, data=data,
+            CONF.inspection_callback_url, data=data, headers=headers,
             verify=verify, cert=cert, timeout=CONF.http_request_timeout)
         if inspector_resp.status_code >= 500:
             raise requests.exceptions.HTTPError(response=inspector_resp)

ironic_python_agent/tests/unit/test_inspector.py

@@ -161,9 +161,11 @@ class TestCallInspector(base.IronicAgentTest):
 
         res = inspector.call_inspector(data, failures)
 
-        mock_post.assert_called_once_with('url',
+        mock_post.assert_called_once_with(
+            'url', data='{"data": 42, "error": null}',
             cert=None, verify=True,
-                                          data='{"data": 42, "error": null}',
+            headers={'Content-Type': 'application/json',
+                     'Accept': 'application/json'},
             timeout=30)
         self.assertEqual(mock_post.return_value.json.return_value, res)
 
@@ -178,6 +180,7 @@ class TestCallInspector(base.IronicAgentTest):
         mock_post.assert_called_once_with('url',
                                           cert=None, verify=True,
                                           data='{"data": 42, "error": "boom"}',
+                                          headers=mock.ANY,
                                           timeout=30)
         self.assertEqual(mock_post.return_value.json.return_value, res)
 
@@ -191,6 +194,7 @@ class TestCallInspector(base.IronicAgentTest):
         mock_post.assert_called_once_with('url',
                                           cert=None, verify=True,
                                           data='{"data": 42, "error": null}',
+                                          headers=mock.ANY,
                                           timeout=30)
         self.assertIsNone(res)
 
@@ -233,6 +237,7 @@ class TestCallInspector(base.IronicAgentTest):
         mock_post.assert_called_with('url',
                                      cert=None, verify=True,
                                      data='{"data": 42, "error": null}',
+                                     headers=mock.ANY,
                                      timeout=30)
 
 

releasenotes/notes/content-type-f4d5ab15adf37252.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes missing ``Content-Type`` header when sending inspection data back
+    to ironic-inspector or ironic. While ironic-inspector tolerates the
+    missing header, it may cause issues with the new inspection implementation.