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| author | Rafael Weingärtner <rafael@apache.org> | 2020-05-29 12:42:28 -0300 |
|---|---|---|
| committer | Rafael Weingärtner <rafael@apache.org> | 2020-07-21 23:44:15 -0300 |
| commit | 51119ddc1c7a98674ac9216cbfb890b1a2dab6a2 (patch) | |
| tree | 48693d497fecac7f236d3eef21b2654bcf55450d /ceilometer/polling | |
| parent | 57017afbcb2bab1791fe50ee6143f89368ba909e (diff) | |
| download | ceilometer-51119ddc1c7a98674ac9216cbfb890b1a2dab6a2.tar.gz | |
Allow operations on Ceilometer dynamic pollster to reference the sample itself
This issue is to allow operators to create expressions that can reference the
sample itself. Currently, the expression is allowed only for fields in the
sample, and not the sample itself.
We discovered this requirement when developing pollsters for Cinder;
the attribute `volume_image_metadata` is not returned in the API response when
it does not exist, therefore, we need a method to check if it exist before
trying to retrieve it.
Change-Id: I5d3eb04534afaeb556ddab4ef603a205745883b8
Diffstat (limited to 'ceilometer/polling')
| -rw-r--r-- | ceilometer/polling/dynamic_pollster.py | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/ceilometer/polling/dynamic_pollster.py b/ceilometer/polling/dynamic_pollster.py index 6cb5442a..db183308 100644 --- a/ceilometer/polling/dynamic_pollster.py +++ b/ceilometer/polling/dynamic_pollster.py @@ -138,8 +138,12 @@ class PollsterSampleExtractor(object): attribute_key, json_object) keys_and_operations = attribute_key.split("|") attribute_key = keys_and_operations[0].strip() - nested_keys = attribute_key.split(".") - value = reduce(operator.getitem, nested_keys, json_object) + + if attribute_key == ".": + value = json_object + else: + nested_keys = attribute_key.split(".") + value = reduce(operator.getitem, nested_keys, json_object) return self.operate_value(keys_and_operations, value) |