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wallabag-kindle-consumer
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Change config to use dataclasses 

This means that we depend on python 3.7 now. But it gives an easier
possibility to distinguish between required and optional parameters. It
also allows to pecify the type of the option drectly and access it via
the dataclasses fields.

This might fix #2
This commit is contained in:
Jan Losinski 2019-02-05 21:16:48 +01:00
parent a37468ce90
commit fdac477d09
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GPG Key ID: AF7958914F414B08
1 changed files with 28 additions and 35 deletions
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63
wallabag_kindle_consumer/config.py
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@ -1,36 +1,29 @@
import os
import dataclasses
import configparser
import os
from logbook import Logger
logger = Logger(__name__)
@dataclasses.dataclass
class Config:
known_values = ["wallabag_host", "db_uri", "client_id", "client_secret", "domain", "smtp_from", "smtp_host",
"smtp_port", "smtp_user", "smtp_passwd", "tag", "refresh_grace", "consume_interval",
"interface_host", "interface_port"]
required_values = ["wallabag_host", "db_uri", "client_id", "client_secret", "domain", "smtp_from", "smtp_host",
"smtp_port", "smtp_user", "smtp_passwd"]
def __init__(self, wallabag_host, db_uri, client_id, client_secret, domain, smtp_from, smtp_host, smtp_port,
smtp_user, smtp_passwd, tag='kindle', refresh_grace=120, consume_interval=30,
interface_host="127.0.0.1", interface_port=8080):
self.wallabag_host = wallabag_host
self.db_uri = db_uri
self.client_id = client_id
self.client_secret = client_secret
self.domain = domain
self.smtp_from = smtp_from
self.smtp_host = smtp_host
self.smtp_port = smtp_port
self.smtp_user = smtp_user
self.smtp_passwd = smtp_passwd
self.tag = tag
self.refresh_grace = refresh_grace
self.consume_interval = consume_interval
self.interface_host = interface_host
self.interface_port = interface_port
wallabag_host: str
db_uri: str
client_id: str
client_secret: str
domain: str
smtp_from: str
smtp_host: str
smtp_port: int
smtp_user: str
smtp_passwd: str
tag: str = "kindle"
refresh_grace: int = 120
consume_interval: int = 30
interface_host: str = "127.0.0.1"
interface_port: int = 8080
@staticmethod
def from_file(filename):
@ -51,12 +44,12 @@ class Config:
tmp = {}
missing = []
for key in Config.known_values:
if key in dflt:
tmp[key] = dflt[key]
for field in dataclasses.fields(Config):
if field.name in dflt:
tmp[field.name] = field.type(dflt[field.name])
else:
if key in Config.required_values:
missing.append(key)
if field.default is dataclasses.MISSING:
missing.append(field.name)
if 0 != len(missing):
logger.warn("Config file {filename} does not contain configs for: {lst}", filename=filename,
@ -70,12 +63,12 @@ class Config:
logger.info("Read config from environment")
tmp = {}
missing = []
for key in Config.known_values:
if key.upper() in os.environ:
tmp[key] = os.environ[key.upper()]
for field in dataclasses.fields(Config):
if field.name.upper() in os.environ:
tmp[field.name] = field.type(os.environ[field.name.upper()])
else:
if key in Config.required_values:
missing.append(key.upper())
if field.default is dataclasses.MISSING:
missing.append(field.name.upper())
if 0 != len(missing):
logger.warn("Environment config does not contain configs for: {lst}", lst=", ".join(missing))