354 lines
9.1 KiB
Python
Executable file
354 lines
9.1 KiB
Python
Executable file
#!/usr/bin/env python3
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import os as _os
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import sys as _sys
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import json as _json
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import argparse as _argparse
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def convey(
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x,
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fs
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):
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y = x
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for f in fs:
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y = f(y)
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return y
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def file_read(
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path
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):
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handle = open(path, "r")
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content = handle.read()
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handle.close()
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return content
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class interface_option(object):
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def is_filled(self):
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raise NotImplementedError()
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def cull(self):
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raise NotImplementedError()
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def propagate(self, function):
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raise NotImplementedError()
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class class_option_empty(interface_option):
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def __init__(self):
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pass
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def is_filled(self):
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return False
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def cull(self):
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raise ValueError("cull from empty")
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def propagate(self, function):
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return class_option_empty()
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class class_option_filled(interface_option):
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def __init__(self, value):
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self.value = value
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def is_filled(self):
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return True
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def cull(self):
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return self.value
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def propagate(self, function):
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return function(self.value)
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def generate_defaults(
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schema_node
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):
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if ("anyOf" in schema_node):
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## todo: o'rly?
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return generate_defaults(schema_node["anyOf"][0])
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else:
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if (not ("type" in schema_node)):
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raise ValueError(":?")
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else:
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if (not (schema_node["type"] == "object")):
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if (not ("default" in schema_node)):
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return class_option_empty()
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else:
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return class_option_filled(schema_node["default"])
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else:
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result = {}
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for (key, value, ) in schema_node["properties"].items():
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sub_result = generate_defaults(value)
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if (not sub_result.is_filled()):
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pass
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else:
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result[key] = sub_result.cull()
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return class_option_filled(result)
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def generate_overrides(
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schema_node
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):
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if ("anyOf" in schema_node):
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## todo: o'rly?
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return generate_overrides(schema_node["anyOf"][0])
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else:
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if (not ("type" in schema_node)):
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raise ValueError(":?")
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else:
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if (not (schema_node["type"] == "object")):
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if ("default" in schema_node):
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return class_option_empty()
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else:
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if ("enum" in schema_node):
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return class_option_filled(schema_node["enum"][0])
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else:
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if (schema_node.get("nullable", False)):
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return class_option_filled(None)
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else:
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if (schema_node["type"] == "boolean"):
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return class_option_filled(False)
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elif (schema_node["type"] == "integer"):
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return class_option_filled(0)
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elif (schema_node["type"] == "number"):
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return class_option_filled(0)
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elif (schema_node["type"] == "string"):
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return class_option_filled("")
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else:
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raise ValueError("unhandled type: %s" % schema_node["type"])
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else:
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result = {}
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for (key, value, ) in schema_node["properties"].items():
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sub_result = generate_overrides(value)
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if (not sub_result.is_filled()):
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pass
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else:
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result[key] = sub_result.cull()
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return (
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class_option_empty()
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if (len(result) <= 0) else
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class_option_filled(result)
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)
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def investigate(
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schema,
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value
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):
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flaws = []
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if ("anyOf" in schema):
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found = False
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entries = []
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for sub_schema in schema["anyOf"]:
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sub_flaws = investigate(sub_schema, value)
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if (len(sub_flaws) <= 0):
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found = True
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break
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else:
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entries.append({"schema": sub_schema, "flaws": sub_flaws})
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if found:
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pass
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else:
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flaws.append({"incident": "not_valid_against_any_sub_schema", "details": {"value": value, "results": entries}})
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else:
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if (value is None):
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if (not schema.get("nullable", False)):
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flaws.append({"incident": "not_nullable", "details": {"value": str(type(value))}})
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else:
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if (not ("type" in schema)):
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raise ValueError("unhandled: %s" % _json.dumps(schema))
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else:
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if (schema["type"] == "boolean"):
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if (not (type(value) == bool)):
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flaws.append({"incident": "wrong_type", "details": {"shall": str(bool), "is": str(type(value))}})
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else:
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if (("enum" in schema) and not (value in schema["enum"])):
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flaws.append({"incident": "not_in_enum", "details": {"enum": schema["enum"], "value": value}})
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elif (schema["type"] == "integer"):
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if (not (type(value) == int)):
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flaws.append({"incident": "wrong_type", "details": {"shall": str(int), "is": str(type(value))}})
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else:
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if (("enum" in schema) and not (value in schema["enum"])):
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flaws.append({"incident": "not_in_enum", "details": {"enum": schema["enum"], "value": value}})
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# todo: min,max,step,etc.
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elif (schema["type"] == "number"):
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if (not (type(value) == int) and not (type(value) == float)):
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flaws.append({"incident": "wrong_type", "details": {"shall": str(float), "is": str(type(value))}})
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else:
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if (("enum" in schema) and not (value in schema["enum"])):
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flaws.append({"incident": "not_in_enum", "details": {"enum": schema["enum"], "value": value}})
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# todo: min,max,step,etc.
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elif (schema["type"] == "string"):
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if (not (type(value) == str)):
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flaws.append({"incident": "wrong_type", "details": {"shall": str(str), "is": str(type(value))}})
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else:
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if (("enum" in schema) and not (value in schema["enum"])):
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flaws.append({"incident": "not_in_enum", "details": {"enum": schema["enum"], "value": value}})
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# todo: min,max,pattern,etc.
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elif (schema["type"] == "object"):
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if (not (type(value) == dict)):
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flaws.append({"incident": "wrong_type", "details": {"shall": str(dict), "is": str(type(value))}})
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else:
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entries = []
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for (property_key, property_value, ) in schema["properties"].items():
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if (not (property_key in value)):
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if (not (property_key in schema.get("required", []))):
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pass
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else:
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flaws.append({"incident": "mandatory_field_missing", "details": {"key": property_key}})
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else:
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sub_flaws = investigate(property_value, value[property_key])
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if (len(sub_flaws) <= 0):
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pass
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else:
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entries.append({"key": property_key, "result": sub_flaws})
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if (len(entries) <= 0):
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pass
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else:
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flaws.append({"incident": "field_flaws", "details": entries})
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# todo: additionalProperties
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# todo: required
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else:
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raise ValueError("unhandled: %s" % _json.dumps(schema))
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return flaws
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def validate(
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schema,
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value
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):
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investigation = investigate(schema, value)
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if False:
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_sys.stderr.write(
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_json.dumps(
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investigation,
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indent = "\t"
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)
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+
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"\n"
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)
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return (
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len(investigation)
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<=
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0
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)
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def reduce(
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schema,
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value
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):
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if False:
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_sys.stderr.write(
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_json.dumps(
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{
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"schema": schema,
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"value": value,
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},
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indent = "\t"
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)
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+
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"\n"
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)
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if ("anyOf" in schema):
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for sub_schema in schema["anyOf"]:
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if validate(sub_schema, value):
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return reduce(sub_schema, value)
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else:
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pass
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raise ValueError("not valid against any sub schema")
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else:
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if (not ("default" in schema)):
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return class_option_filled(value)
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else:
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if (
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(schema["type"] == "boolean")
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or
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(schema["type"] == "integer")
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or
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(schema["type"] == "number")
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or
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(schema["type"] == "string")
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):
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if (value == schema["default"]):
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return class_option_empty()
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else:
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return class_option_filled(value)
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elif (schema["type"] == "array"):
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if (value == schema["default"]):
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return class_option_empty()
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else:
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return class_option_filled(value)
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elif (schema["type"] == "object"):
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if (not (type(value) == dict)):
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raise ValueError("dict expected")
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else:
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value_out = {}
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for (property_key, property_value, ) in schema["properties"].items():
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sub_result = reduce(property_value, value[property_key])
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if (not sub_result.is_filled()):
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pass
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else:
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value_out[property_key] = sub_result.cull()
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return class_option_filled(value_out)
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# todo: additionalProperties
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# toto: required
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else:
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raise ValueError("unhandled: %s" % _json.dumps(schema))
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def role_name_derive(
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role_name
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):
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return role_name.replace("-", "_")
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def main(
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):
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## args
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argument_parser = _argparse.ArgumentParser()
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argument_parser.add_argument(
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"action",
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type = str,
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choices = [
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"defaults",
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"overrides",
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"reduce",
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],
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metavar = "<action>",
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)
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argument_parser.add_argument(
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"role",
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type = str,
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metavar = "<role>",
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)
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args = argument_parser.parse_args()
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## exec
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cfg_schema = convey(
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args.role,
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[
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lambda x: _os.path.join("roles", x, "cfg.schema.json"),
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file_read,
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_json.loads,
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]
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)
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if args.action == "defaults":
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raw = generate_defaults(cfg_schema)
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key = ("cfg_%s_defaults" % (role_name_derive(args.role)))
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result = {key: (raw.cull() if raw.is_filled() else {})}
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_sys.stdout.write(_json.dumps(result, indent = "\t") + "\n")
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elif args.action == "overrides":
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raw = generate_overrides(cfg_schema)
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key = ("cfg_%s_overrides" % (role_name_derive(args.role)))
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result = {key: (raw.cull() if raw.is_filled() else {})}
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_sys.stdout.write(_json.dumps(result, indent = "\t") + "\n")
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elif args.action == 'reduce':
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cfg = _json.loads(_sys.stdin.read())
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result = reduce(cfg_schema, cfg)
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if (not result.is_filled()):
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print("?")
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else:
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_sys.stdout.write(_json.dumps(result.cull(), indent = "\t") + "\n")
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else:
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raise ValueError("invalid action: %s" % args.action)
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main()
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