bwfiles/items/uberspace_web_backend.py

139 lines
4.1 KiB
Python

from bundlewrap.exceptions import BundleError
from bundlewrap.items import Item
def backend_segments_to_dict(segments):
attributes = {}
name = segments[0].strip()
attributes["backend"] = segments[1].strip().rstrip(",")
attributes["port"] = None
if ":" in attributes["backend"]:
backend_segments = attributes["backend"].split(":")
attributes["backend"] = backend_segments[0]
attributes["port"] = int(backend_segments[1])
attributes["remove_prefix"] = None
flag = segments[2]
if flag == "--remove-prefix":
attributes["remove_prefix"] = True
return attributes
def get_backend_config(node, name):
result = node.run("uberspace web backend list", may_fail=True)
backend_lines = result.stdout_text.splitlines()
for line in backend_lines:
segments = line.split("=>", 1)[0].strip().split(" ")
if segments[0] == name:
d = backend_segments_to_dict(segments)
return d
def make_display_string(name, attributes):
backend_name = attributes.get("backend")
if attributes.get("backend") == "http":
backend_name += f":{attributes.get('port')}"
args = [ backend_name ]
if attributes["remove_prefix"]:
args.append("--remove-prefix")
arg_string = ", ".join(args)
return f"{name} {arg_string}"
def make_option_string(name, attributes):
out = []
out.append(name)
out.append(f" --{attributes.get('backend')}")
if attributes.get("backend") == "http":
out.append("--port")
out.append(str(attributes.get('port')))
if attributes["remove_prefix"]:
out.append("--remove-prefix")
return " ".join(out)
class UberspaceWebBackend(Item):
"""
Manage uberspace web backends
"""
BUNDLE_ATTRIBUTE_NAME = "uberspace_web_backend"
ITEM_ATTRIBUTES = {
"backend": "apache",
"port": None,
"remove_prefix": None,
}
ITEM_TYPE_NAME = "uberspace_web_backend"
def __repr__(self):
return f"<UberspaceWebBackend {make_display_string(self.name, self.attributes)}>"
def cdict(self):
cdict = {}
for option, value in self.attributes.items():
if value is not None:
cdict[option] = value
return cdict
def fix(self, status):
self.node.run(f"uberspace web backend set {make_option_string(self.name, self.attributes)}", may_fail=True)
def sdict(self):
return get_backend_config(self.node, self.name)
@classmethod
def validate_attributes(cls, bundle, item_id, attributes):
if attributes.get("backend") == "apache":
if attributes.get("port") is not None:
raise BundleError(_(
"do not set 'port' while using 'apache' for 'backend' on {item} in bundle '{bundle}'"
).format(
item=item_id,
bundle=bundle.name,
))
if attributes.get("remove_prefix") is not None:
raise BundleError(_(
"do not set 'port' while using 'apache' for 'backend' on {item} in bundle '{bundle}'"
).format(
item=item_id,
bundle=bundle.name,
))
elif attributes.get("backend") == "http":
if not isinstance(attributes.get("port"), int):
raise BundleError(_(
"'port' required and needs to be numeric while using 'http' for 'backend' on {item} in bundle '{bundle}'"
).format(
item=item_id,
bundle=bundle.name,
))
if attributes.get("remove_prefix") not in [True, False, None]:
raise BundleError(_(
"expected boolean for 'remove_prefix' on {item} in bundle '{bundle}'"
).format(
item=item_id,
bundle=bundle.name,
))
else:
raise BundleError(_(
"expected 'apache' or 'http' for 'backend' on {item} in bundle '{bundle}'"
).format(
item=item_id,
bundle=bundle.name,
))