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120 lines
4.1 KiB
120 lines
4.1 KiB
from detectors.step_detector import StepDetector |
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from detectors.peaks_detector import PeaksDetector |
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from data_provider import DataProvider |
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import logging |
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from urllib.parse import urlparse |
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import os.path |
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import json |
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import config |
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import pandas as pd |
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logger = logging.getLogger('analytic_toolset') |
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def segments_box(segments): |
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max_time = 0 |
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min_time = float("inf") |
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for segment in segments: |
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min_time = min(min_time, segment['start']) |
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max_time = max(max_time, segment['finish']) |
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min_time = pd.to_datetime(min_time, unit='ms') |
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max_time = pd.to_datetime(max_time, unit='ms') |
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return min_time, max_time |
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class PatternDetectionModel: |
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def __init__(self, analytic_unit_id, pattern_type): |
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self.analytic_unit_id = analytic_unit_id |
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self.pattern_type = pattern_type |
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self.__load_anomaly_config() |
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parsedUrl = urlparse(self.anomaly_config['panelUrl']) |
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origin = parsedUrl.scheme + '://' + parsedUrl.netloc |
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datasource = self.anomaly_config['datasource'] |
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metric_name = self.anomaly_config['metric']['targets'][0] |
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target_filename = os.path.join(config.METRICS_FOLDER, metric_name + ".json") |
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datasource['origin'] = origin |
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dataset_filename = os.path.join(config.DATASET_FOLDER, metric_name + ".csv") |
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with open(target_filename, 'r') as file: |
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target = json.load(file) |
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self.data_prov = DataProvider(datasource, target, dataset_filename) |
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self.model = None |
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self.__load_model(pattern_type) |
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def learn(self, segments): |
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self.model = self.__create_model(self.pattern_type) |
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window_size = 200 |
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dataframe = self.data_prov.get_dataframe() |
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segments = self.data_prov.transform_anomalies(segments) |
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# TODO: pass only part of dataframe that has segments |
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self.model.fit(dataframe, segments) |
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self.__save_model() |
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return 0 |
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def predict(self, last_prediction_time): |
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if self.model is None: |
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return [], last_prediction_time |
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window_size = 100 |
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last_prediction_time = pd.to_datetime(last_prediction_time, unit='ms') |
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start_index = self.data_prov.get_upper_bound(last_prediction_time) |
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start_index = max(0, start_index - window_size) |
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dataframe = self.data_prov.get_data_range(start_index) |
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predicted_indexes = self.model.predict(dataframe) |
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predicted_indexes = [(x, y) for (x, y) in predicted_indexes if x >= start_index and y >= start_index] |
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predicted_times = self.data_prov.inverse_transform_indexes(predicted_indexes) |
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segments = [] |
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for time_value in predicted_times: |
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ts1 = int(time_value[0].timestamp() * 1000) |
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ts2 = int(time_value[1].timestamp() * 1000) |
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segments.append({ |
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'start': min(ts1, ts2), |
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'finish': max(ts1, ts2) |
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}) |
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last_dataframe_time = dataframe.iloc[- 1]['timestamp'] |
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last_prediction_time = int(last_dataframe_time.timestamp() * 1000) |
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return segments, last_prediction_time |
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# return predicted_anomalies, last_prediction_time |
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def synchronize_data(self): |
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self.data_prov.synchronize() |
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def __create_model(self, pattern): |
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if pattern == "peak": |
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return PeaksDetector() |
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if pattern == "jump" or pattern == "drop": |
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return StepDetector(pattern) |
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raise ValueError('Unknown pattern "%s"' % pattern) |
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def __load_anomaly_config(self): |
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with open(os.path.join(config.ANALYTIC_UNITS_FOLDER, self.analytic_unit_id + ".json"), 'r') as config_file: |
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self.anomaly_config = json.load(config_file) |
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def __save_model(self): |
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logger.info("Save model '%s'" % self.analytic_unit_id) |
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model_filename = os.path.join(config.MODELS_FOLDER, self.analytic_unit_id + ".m") |
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self.model.save(model_filename) |
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def __load_model(self, pattern): |
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logger.info("Load model '%s'" % self.analytic_unit_id) |
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model_filename = os.path.join(config.MODELS_FOLDER, self.pattern_type + ".m") |
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if os.path.exists(model_filename): |
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self.model = self.__create_model(pattern) |
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self.model.load(model_filename)
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