return latch info in version response

inventory_provider/routes/default.py

 import pkg_resources
 
-from flask import Blueprint, jsonify
+from flask import Blueprint, jsonify, current_app
 from inventory_provider.routes import common
+from inventory_provider.tasks.common import get_current_redis, get_latch
 
 routes = Blueprint("inventory-data-default-routes", __name__)
 
@@ -16,8 +17,11 @@ def after_request(resp):
 @routes.route("/version", methods=['GET', 'POST'])
 @common.require_accepts_json
 def version():
+    config = current_app.config["INVENTORY_PROVIDER_CONFIG"]
+
     return jsonify({
         'api': API_VERSION,
         'module':
-            pkg_resources.get_distribution('inventory_provider').version
+            pkg_resources.get_distribution('inventory_provider').version,
+        'latch': get_latch(get_current_redis(config))
     })

test/conftest.py

@@ -79,7 +79,9 @@ class MockedRedis(object):
                 MockedRedis.db['db:latch'] = json.dumps({
                     'current': 0,
                     'next': 0,
-                    'this': 0
+                    'this': 0,
+                    'pending': False,
+                    'failure': False
                 })
 
     def set(self, name, value):
@@ -139,6 +141,15 @@ def flask_config_filename():
 
 @pytest.fixture
 def mocked_redis(mocker):
+
+    MockedRedis().db['db:latch'] = json.dumps({
+        'current': 0,
+        'next': 0,
+        'this': 0,
+        'pending': False,
+        'failure': False
+    })
+
     mocker.patch(
         'inventory_provider.tasks.common.redis.StrictRedis',
         MockedRedis)

test/test_general_routes.py

@@ -7,9 +7,26 @@ DEFAULT_REQUEST_HEADERS = {
 }
 
 
-def test_version_request(client):
+def test_version_request(client, mocked_redis):
+
     version_schema = {
         "$schema": "http://json-schema.org/draft-07/schema#",
+
+        "definitions": {
+            "latch": {
+                "type": "object",
+                "properties": {
+                    "current": {"type": "integer"},
+                    "next": {"type": "integer"},
+                    "this": {"type": "integer"},
+                    "failure": {"type": "boolean"},
+                    "pending": {"type": "boolean"},
+                },
+                "required": ["current", "next", "this", "pending", "failure"],
+                "additionalProperties": False
+            }
+        },
+
         "type": "object",
         "properties": {
             "api": {
@@ -19,7 +36,8 @@ def test_version_request(client):
             "module": {
                 "type": "string",
                 "pattern": r'\d+\.\d+'
-            }
+            },
+            "latch": {"$ref": "#/definitions/latch"}
         },
         "required": ["api", "module"],
         "additionalProperties": False