def test_invalid_metric_names(self) -> None:
for invalid_metric_name in TestData.INVALID_STRS:
with pytest.raises(ValueError):
statsd_format(
metric_name=invalid_metric_name,
value=TestData.VALUE,
typ="c",
)
def test_basic_counter(self) -> None:
result = statsd_format(
metric_name=TestData.METRIC_NAME,
value=TestData.VALUE,
typ="c",
)
assert result == "some_metric:2.0|c"
def test_non_counter_with_sample_rate_doesnt_include_it(self) -> None:
result = statsd_format(
metric_name=TestData.METRIC_NAME,
value=TestData.VALUE,
sample_rate=TestData.SAMPLE_RATE,
typ="g",
)
assert result == "some_metric:2.0|g"
def test_counter_with_sample_rate(self) -> None:
result = statsd_format(
metric_name=TestData.METRIC_NAME,
value=TestData.VALUE,
sample_rate=TestData.SAMPLE_RATE,
typ="c",
)
assert result == "some_metric:2.0|c|@0.5"
def test_tags(self) -> None:
result = statsd_format(
metric_name=TestData.METRIC_NAME,
value=TestData.VALUE,
sample_rate=TestData.SAMPLE_RATE,
typ="ms",
tags=TestData.TAGS,
)
assert result == "some_metric:2.0|ms|#key:value,key2:value2"
def write_metric(
self,
metric_name: str,
value: Union[int, float],
typ: MetricType,
sample_rate: float = DEFAULT_SAMPLE_RATE,
tags: Sequence[TagPair] = (),
) -> None:
now = self.utc_now()
now_ts = self._format_time_for_cloudwatch(now)
statsd = statsd_format(
metric_name,
value,
typ,
sample_rate,
tags,
)
self.out.write(f"MONITORING|{self.service_name}|{now_ts}|{statsd}\n")