86 lines
2.1 KiB
Python
Executable File
86 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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import argparse
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import io
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import yaml
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def migrate(values):
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"""Actual changes here"""
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# Remove various keys as they have been merged into the metrics template
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deleteKey(values["metrics"]['kube-prometheus-stack']["alertmanager"]["alertmanagerSpec"], "podMetadata")
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deleteKey(values["metrics"]['kube-prometheus-stack']["alertmanager"], "config")
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deleteKey(values["metrics"]['kube-prometheus-stack']["prometheus"]["prometheusSpec"], "externalLabels")
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return values
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def deleteKey(values, key):
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"""Delete key from dictionary if exists"""
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try:
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values.pop(key)
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except KeyError:
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pass
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return values
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class MyDumper(yaml.Dumper):
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"""
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Required to add additional indent for arrays to match yq behaviour to reduce noise in diffs
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"""
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def increase_indent(self, flow=False, indentless=False):
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return super(MyDumper, self).increase_indent(flow, False)
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def str_presenter(dumper, data):
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if len(data.splitlines()) > 1: # check for multiline string
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return dumper.represent_scalar("tag:yaml.org,2002:str", data, style="|")
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return dumper.represent_scalar("tag:yaml.org,2002:str", data)
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def rec_sort(d):
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if isinstance(d, dict):
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res = dict()
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# Always have "enabled" first if present
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if "enabled" in d.keys():
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res["enabled"] = rec_sort(d["enabled"])
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d.pop("enabled")
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# next is "name" if present
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if "name" in d.keys():
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res["name"] = rec_sort(d["name"])
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d.pop("name")
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for k in sorted(d.keys()):
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res[k] = rec_sort(d[k])
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return res
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if isinstance(d, list):
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for idx, elem in enumerate(d):
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d[idx] = rec_sort(elem)
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return d
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yaml.add_representer(str, str_presenter)
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# to use with safe_dump:
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yaml.representer.SafeRepresenter.add_representer(str, str_presenter)
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# Read values
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values = yaml.safe_load(sys.stdin)
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# Output new values
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buffer = io.StringIO()
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yaml.dump(
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rec_sort(migrate(values)),
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sys.stdout,
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default_flow_style=False,
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indent=2,
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sort_keys=False,
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Dumper=MyDumper,
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)
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