Allow using the quantityt metric type outside of Gecko

HISTORY.rst

@@ -8,6 +8,7 @@ Unreleased
 * The `SUPERFLUOUS_NO_LINT` warning has been removed from the glinter. It likely did more harm than good, and makes it hard to make `metrics.yaml` files that pass across different versions of `glean_parser`.
 * Expired metrics will now produce a linter warning, `EXPIRED_METRIC`.
 * Expiry dates that are more than 730 days (~2 years) in the future will produce a linter warning, `EXPIRATION_DATE_TOO_FAR`.
+* Allow using the Quantity metric type outside of Gecko.
 
 1.28.3 (2020-07-28)
 -------------------

glean_parser/markdown.py

@@ -36,6 +36,9 @@ def extra_info(obj: Union[metrics.Metric, pings.Ping]) -> List[Tuple[str, str]]:
     if isinstance(obj, metrics.Jwe):
         extra_info.append(("decrypted_name", obj.decrypted_name))
 
+    if isinstance(obj, metrics.Quantity):
+        extra_info.append(("unit", obj.unit))
+
     return extra_info
 
 

glean_parser/schemas/metrics.1-0-0.schema.yaml

@@ -83,8 +83,7 @@ definitions:
 
             - `counter`: A numeric value that can only be incremented.
 
-            - `quantity`: A numeric value that is set directly. Only allowed for
-              metrics coming from GeckoView.
+            - `quantity`: A numeric value that is set directly.
 
             - `timespan`: Represents a time interval. Additional properties:
               `time_unit`.
@@ -548,12 +547,11 @@ additionalProperties:
             type:
               enum:
                 - custom_distribution
-                - quantity
         then:
           required:
             - gecko_datapoint
           description: |
-            `custom_distribution` and `quantity` is only allowed for Gecko
+            `custom_distribution` is only allowed for Gecko
             metrics.
       -
         if:

tests/test_parser.py

@@ -575,11 +575,10 @@ def test_quantity():
     contents = [util.add_required(x) for x in contents]
     all_metrics = parser.parse_objects(contents)
     errors = list(all_metrics)
-    assert len(errors) == 2
+    assert len(errors) == 1
     assert any(
         "`quantity` is missing required parameter `unit`" in err for err in errors
     )
-    assert any("is only allowed for Gecko" in err for err in errors)
 
     # Test that quantity works
     contents = [