compose-viz/compose_viz/parser.py
2022-05-21 18:26:39 +08:00

89 lines
3 KiB
Python

from typing import List, Optional
from ruamel.yaml import YAML
from compose_viz.compose import Compose, Service
from compose_viz.extends import Extends
class Parser:
def __init__(self):
pass
def parse(self, file_path: str) -> Compose:
# load the yaml file
with open(file_path, "r") as f:
try:
yaml = YAML(typ="safe", pure=True)
yaml_data = yaml.load(f)
except Exception as e:
raise RuntimeError(f"Error parsing file '{file_path}': {e}")
# validate the yaml file
if not yaml_data:
raise RuntimeError("Empty yaml file, aborting.")
if not yaml_data.get("services"):
raise RuntimeError("No services found, aborting.")
# parse services data into Service objects
services_data = yaml_data["services"]
services = self.parse_service_data(yaml_data["services"])
# create Compose object
compose = Compose(services)
return compose
def parse_service_data(self, services_yaml_data: List):
services = []
for service, service_name in zip(services_yaml_data.values(), services_yaml_data.keys()):
service_image: Optional[str] = None
if service.get("image"):
service_image = service["image"]
elif service.get("build"):
service_image = "build from " + service["build"]
service_networks: List[str] = []
if service.get("networks"):
if type(service["networks"]) is list:
service_networks = service["networks"]
else:
service_networks = list(service["networks"].keys())
service_extends: Optional[Extends] = None
if service.get("extends"):
service_extends = Extends(service_name=service["extends"]["service"])
service_ports: List[str] = []
if service.get("ports"):
service_ports = service["ports"]
service_depends_on: List[str] = []
if service.get("depends_on"):
service_depends_on = service["depends_on"]
services.append(
Service(
name=service_name,
image=service_image,
networks=service_networks,
extends=service_extends,
ports=service_ports,
depends_on=service_depends_on,
)
)
# Service print debug
#print("--------------------")
#print("Service name: {}".format(service_name))
#print("image: {}".format(service_image))
#print("networks: {}".format(service_networks))
#print("image: {}".format(service_image))
#print("extends: {}".format(service_extends))
#print("ports: {}".format(service_ports))
#print("depends: {}".format(service_depends_on))
return services