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Add support for adding callables as extra tags
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,54 @@ | ||
import logging | ||
import time | ||
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import logging_loki | ||
from logging_loki.emitter import LokiEmitterV1 | ||
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def test_callable_tags(): | ||
class MyEmitter(LokiEmitterV1): | ||
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def build_payload(self, record, line) -> dict: | ||
labels = self.build_tags(record) | ||
ns = 1e9 | ||
ts = str(int(time.time() * ns)) | ||
stream = { | ||
"stream": labels, | ||
"values": [[ts, line, self.get_entry_labels(record, line)]], | ||
} | ||
return {"streams": [stream]} | ||
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def __call__(self, record, line_no): | ||
payload = self.build_payload(record, line_no) | ||
stream = payload['streams'][0]['values'][0][2] | ||
assert 'application' in stream | ||
assert stream['value'] == 5 | ||
assert stream['device'] == 'test' | ||
assert stream['levelname'] == 'WARNING' | ||
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# Register a mock emitter | ||
logging_loki.LokiHandler.emitters['mock_emitter'] = MyEmitter | ||
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handler = logging_loki.LokiHandler( | ||
url="https://example.com/loki/api/v1/push", | ||
tags={"application": "my-app", 'value': lambda: 5}, | ||
auth=("username", "password"), | ||
version="mock_emitter" | ||
) | ||
logger = logging.getLogger("my-logger") | ||
logger.addHandler(handler) | ||
logger.warning('Error occurred', extra={'tags': {'device': 'test'}}) | ||
logger.warning('Error occurred', extra={'device': 'test'}) | ||
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def test_not_support_v0(): | ||
try: | ||
logging_loki.LokiHandler( | ||
url="https://example.com/loki/api/v1/push", | ||
tags={"application": "my-app", 'value': lambda: 5}, | ||
auth=("username", "password"), | ||
version="0") | ||
except ValueError: | ||
pass | ||
else: | ||
assert False, 'V0 supports callable labels' |