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Merge pull request #7 from YounesOMK/feat/prometheus_up_time_deducer
✨ feat: add prometheus service availability
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from datetime import datetime | ||
from typing import Optional | ||
from pydantic import BaseModel | ||
from metricheq.connectors.base import Connector | ||
from metricheq.connectors.prometheus import PrometheusConnector | ||
from urllib.parse import quote | ||
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from metricheq.deducers.base import Deducer | ||
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# TODO: provide default value for step based on start, end date and points | ||
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class PrometheusServiceAvailabilityParams(BaseModel): | ||
labels: dict[str, str] | ||
start_time: datetime | ||
end_time: datetime | ||
step: Optional[int] = None | ||
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class PrometheusServiceAvailabilityDeducer(Deducer): | ||
def __init__(self, connector: Connector, params: dict): | ||
if not isinstance(connector, PrometheusConnector): | ||
raise TypeError( | ||
"The provided connector is not a valid prometheus connector" | ||
) | ||
self.params_model = PrometheusServiceAvailabilityParams(**params) | ||
super().__init__(connector, params) | ||
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def retrieve_data(self): | ||
label_filters = ",".join( | ||
[f'{key}="{value}"' for key, value in self.params_model.labels.items()] | ||
) | ||
start_date_rfc3339 = self.params_model.start_time.isoformat() + "Z" | ||
end_date_rfc3339 = self.params_model.end_time.isoformat() + "Z" | ||
step = self.params.get("step", 60) | ||
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query = f"up{{{label_filters}}}" | ||
encoded_query = quote(query) | ||
endpoint = f"query_range?query={encoded_query}&start={start_date_rfc3339}&end={end_date_rfc3339}&step={step}" | ||
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response = self.client.make_request(endpoint) | ||
if response.status_code == 200: | ||
return response.json() | ||
else: | ||
response.raise_for_status() | ||
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def process_data(self, data): | ||
results = data.get("data", {}).get("result", []) | ||
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up_times = 0 | ||
total_times = 0 | ||
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for result in results: | ||
for _, status in result.get("values", []): | ||
total_times += 1 | ||
if status == "1": # service was up | ||
up_times += 1 | ||
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availability_percentage = ( | ||
(up_times / total_times) * 100 if total_times > 0 else 0 | ||
) | ||
return availability_percentage | ||
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def finalize(self, processed_data): | ||
return processed_data |
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from datetime import datetime, timedelta | ||
import unittest | ||
from unittest.mock import Mock | ||
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from requests import HTTPError | ||
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from metricheq.connectors.prometheus import PrometheusConnector | ||
from metricheq.deducers.prometheus import PrometheusServiceAvailabilityDeducer | ||
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class TestPrometheusServiceAvailabilityDeducer(unittest.TestCase): | ||
def setUp(self): | ||
self.mock_client = Mock() | ||
self.mock_connector = Mock(spec=PrometheusConnector, client=self.mock_client) | ||
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start_time = datetime.now() - timedelta(days=1) | ||
end_time = datetime.now() | ||
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self.params = { | ||
"labels": {"job": "job_label"}, | ||
"start_time": start_time, | ||
"end_time": end_time, | ||
"step": 60, | ||
} | ||
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self.deducer = PrometheusServiceAvailabilityDeducer( | ||
self.mock_connector, self.params | ||
) | ||
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def test_init_with_invalid_connector(self): | ||
with self.assertRaises(TypeError): | ||
invalid_connector = Mock() | ||
PrometheusServiceAvailabilityDeducer(invalid_connector, self.params) | ||
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def test_retrieve_data_successful(self): | ||
mock_response = Mock() | ||
mock_response.status_code = 200 | ||
mock_response.json.return_value = {"data": {"result": []}} | ||
self.mock_client.make_request.return_value = mock_response | ||
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result = self.deducer.retrieve_data() | ||
self.assertIsNotNone(result) | ||
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def test_retrieve_data_failure(self): | ||
mock_response = Mock() | ||
mock_response.status_code = 500 | ||
mock_response.raise_for_status.side_effect = HTTPError("500 Server Error") | ||
self.mock_client.make_request.return_value = mock_response | ||
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with self.assertRaises(HTTPError): | ||
self.deducer.retrieve_data() | ||
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def test_process_data(self): | ||
mock_data = { | ||
"data": {"result": [{"values": [["timestamp", "1"], ["timestamp", "0"]]}]} | ||
} | ||
result = self.deducer.process_data(mock_data) | ||
expected_availability = ( | ||
50.0 # Assuming one 'up' and one 'down' in the mock data | ||
) | ||
self.assertEqual(result, expected_availability) | ||
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def test_finalize(self): | ||
processed_data = 75.0 | ||
result = self.deducer.finalize(processed_data) | ||
self.assertEqual(result, processed_data) | ||
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def test_deduce_integration(self): | ||
mock_retrieve_data = Mock(return_value={"data": {"result": []}}) | ||
mock_process_data = Mock(return_value=100.0) | ||
mock_finalize = Mock(return_value=100.0) | ||
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self.deducer.retrieve_data = mock_retrieve_data | ||
self.deducer.process_data = mock_process_data | ||
self.deducer.finalize = mock_finalize | ||
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result = self.deducer.deduce() | ||
self.assertEqual(result, 100.0) |