180 lines
4 KiB
Python
Executable file
180 lines
4 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
|
|
import os as _os
|
|
import sys as _sys
|
|
import json as _json
|
|
import argparse as _argparse
|
|
|
|
|
|
def convey(
|
|
x,
|
|
fs
|
|
):
|
|
y = x
|
|
for f in fs:
|
|
y = f(y)
|
|
return y
|
|
|
|
|
|
def file_read(
|
|
path
|
|
):
|
|
handle = open(path, "r")
|
|
content = handle.read()
|
|
handle.close()
|
|
return content
|
|
|
|
|
|
class interface_option(object):
|
|
def is_filled(self):
|
|
raise NotImplementedError()
|
|
def cull(self):
|
|
raise NotImplementedError()
|
|
def propagate(self, function):
|
|
raise NotImplementedError()
|
|
|
|
|
|
class class_option_empty(interface_option):
|
|
def __init__(self):
|
|
pass
|
|
def is_filled(self):
|
|
return False
|
|
def cull(self):
|
|
raise ValueError("cull from empty")
|
|
def propagate(self, function):
|
|
return class_option_empty()
|
|
|
|
|
|
class class_option_filled(interface_option):
|
|
def __init__(self, value):
|
|
self.value = value
|
|
def is_filled(self):
|
|
return True
|
|
def cull(self):
|
|
return self.value
|
|
def propagate(self, function):
|
|
return function(self.value)
|
|
|
|
|
|
def generate_defaults(
|
|
schema_node
|
|
):
|
|
if ("anyOf" in schema_node):
|
|
## todo: o'rly?
|
|
return generate_defaults(schema_node["anyOf"][0])
|
|
else:
|
|
if (not ("type" in schema_node)):
|
|
raise ValueError(":?")
|
|
else:
|
|
if (not (schema_node["type"] == "object")):
|
|
if (not ("default" in schema_node)):
|
|
return class_option_empty()
|
|
else:
|
|
return class_option_filled(schema_node["default"])
|
|
else:
|
|
result = {}
|
|
for (key, value, ) in schema_node["properties"].items():
|
|
sub_result = generate_defaults(value)
|
|
if (not sub_result.is_filled()):
|
|
pass
|
|
else:
|
|
result[key] = sub_result.cull()
|
|
return class_option_filled(result)
|
|
|
|
|
|
def generate_overrides(
|
|
schema_node
|
|
):
|
|
if ("anyOf" in schema_node):
|
|
## todo: o'rly?
|
|
return generate_overrides(schema_node["anyOf"][0])
|
|
else:
|
|
if (not ("type" in schema_node)):
|
|
raise ValueError(":?")
|
|
else:
|
|
if (not (schema_node["type"] == "object")):
|
|
if ("default" in schema_node):
|
|
return class_option_empty()
|
|
else:
|
|
if ("enum" in schema_node):
|
|
return class_option_filled(schema_node["enum"][0])
|
|
else:
|
|
if (schema_node.get("nullable", False)):
|
|
return class_option_filled(None)
|
|
else:
|
|
if (schema_node["type"] == "boolean"):
|
|
return class_option_filled(False)
|
|
elif (schema_node["type"] == "integer"):
|
|
return class_option_filled(0)
|
|
elif (schema_node["type"] == "number"):
|
|
return class_option_filled(0)
|
|
elif (schema_node["type"] == "string"):
|
|
return class_option_filled("")
|
|
else:
|
|
raise ValueError("unhandled type: %s" % schema_node["type"])
|
|
else:
|
|
result = {}
|
|
for (key, value, ) in schema_node["properties"].items():
|
|
sub_result = generate_overrides(value)
|
|
if (not sub_result.is_filled()):
|
|
pass
|
|
else:
|
|
result[key] = sub_result.cull()
|
|
return (
|
|
class_option_empty()
|
|
if (len(result) <= 0) else
|
|
class_option_filled(result)
|
|
)
|
|
|
|
|
|
def role_name_derive(
|
|
role_name
|
|
):
|
|
return role_name.replace("-", "_")
|
|
|
|
|
|
def main(
|
|
):
|
|
## args
|
|
argument_parser = _argparse.ArgumentParser()
|
|
argument_parser.add_argument(
|
|
"action",
|
|
type = str,
|
|
choices = [
|
|
"defaults",
|
|
"overrides",
|
|
],
|
|
metavar = "<action>",
|
|
)
|
|
argument_parser.add_argument(
|
|
"role",
|
|
type = str,
|
|
metavar = "<role>",
|
|
)
|
|
args = argument_parser.parse_args()
|
|
|
|
## exec
|
|
cfg_schema = convey(
|
|
args.role,
|
|
[
|
|
lambda x: _os.path.join("roles", x, "cfg.schema.json"),
|
|
file_read,
|
|
_json.loads,
|
|
]
|
|
)
|
|
if args.action == "defaults":
|
|
raw = generate_defaults(cfg_schema)
|
|
key = ("cfg_%s_defaults" % (role_name_derive(args.role)))
|
|
result = {key: (raw.cull() if raw.is_filled() else {})}
|
|
_sys.stdout.write(_json.dumps(result, indent = "\t") + "\n")
|
|
elif args.action == "overrides":
|
|
raw = generate_overrides(cfg_schema)
|
|
key = ("cfg_%s_overrides" % (role_name_derive(args.role)))
|
|
result = {key: (raw.cull() if raw.is_filled() else {})}
|
|
_sys.stdout.write(_json.dumps(result, indent = "\t") + "\n")
|
|
else:
|
|
raise ValueError("invalid action: %s" % args.action)
|
|
|
|
|
|
main()
|