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# PyPy does not have ultrajson |
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2
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# See https://github.com/esnme/ultrajson/issues/98 |
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3
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try: |
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4
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import ujson as json |
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5
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except ImportError: |
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6
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import json |
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7
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8
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import logging |
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9
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10
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11
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class Encoder(object): |
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12
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""" |
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13
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An encoder for the Collectd JSON format |
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14
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See https://collectd.org/wiki/index.php/JSON |
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15
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16
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Sample measurements: |
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17
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18
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[{"values":[0],"dstypes":["derive"],"dsnames":["value"],"time":1436372292.412,"interval":10.000,"host":"26f2fc918f50","plugin":"cpu","plugin_instance":"1","type":"cpu","type_instance":"interrupt"}] |
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19
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20
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[ |
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21
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{ |
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22
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"values": [1901474177], |
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"dstypes": ["counter"], |
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"dsnames": ["value"], |
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"time": 1280959128, |
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26
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"interval": 10, |
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"host": "leeloo.octo.it", |
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28
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"plugin": "cpu", |
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29
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"plugin_instance": "0", |
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"type": "cpu", |
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31
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"type_instance": "idle" |
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32
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} |
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33
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] |
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34
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""" |
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35
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def encode(self, msg): |
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36
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measurements = [] |
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37
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38
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for line in msg.decode().split("\n"): |
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39
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try: |
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40
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# Set flag for float precision to get the same |
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41
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# results for Python 2 and 3. |
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42
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json_object = self.parse_line(line) |
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43
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except ValueError as e: |
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44
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logging.debug("Error in encoder: %s", e) |
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45
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continue |
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46
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for entry in json_object: |
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47
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measurement = [entry['plugin']] |
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48
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# Check if plugin_instance is set and not empty |
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49
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if 'plugin_instance' in entry and entry['plugin_instance']: |
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50
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measurement.append('-') |
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51
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measurement.append(entry['plugin_instance']) |
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52
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# Todo: Read all values from collect json message |
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53
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value = str(entry['values'][0]) |
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54
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# Always use millisecond precision for the timestamp |
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55
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timestamp = "{:.3f}".format(entry['time']) |
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56
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measurement.extend([ |
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57
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'_', |
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58
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entry['plugin'], |
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59
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'-', |
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60
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entry['type_instance'], |
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61
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',', |
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62
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'host=', |
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63
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entry['host'], |
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64
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' ', |
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65
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'value', |
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66
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'=', |
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67
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value, |
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68
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' ', |
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69
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timestamp |
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70
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]) |
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71
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measurements.append(''.join(measurement)) |
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72
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return measurements |
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73
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74
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@staticmethod |
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75
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def parse_line(line): |
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76
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return json.loads(line, {'precise_float': True}) |
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77
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mre /
kafka-influxdb
