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from __future__ import absolute_import, division, print_function 

 

import argparse 

import copy 

import json 

import os 

import re 

 

import requests 

import yaml 

 

from appr.client import ApprClient 

from appr.utils import parse_package_name, parse_version, split_package_name 

from appr.render_jsonnet import RenderJsonnet 

 

 

def _set_package(parser, namespace, dest, package_parts): 

parsed_version = parse_version(package_parts['version']) 

setattr(namespace, "registry_host", package_parts['host']) 

setattr(namespace, 'version', parsed_version['value']) 

setattr(namespace, 'version_parts', parsed_version) 

package = "%s/%s" % (package_parts['namespace'], package_parts['package']) 

setattr(namespace, dest, package) 

setattr(namespace, "package_parts", package_parts) 

 

 

class PackageName(argparse.Action): 

def __call__(self, parser, namespace, value, option_string=None): 

try: 

name = value[0] 

package_parts = parse_package_name(name) 

_set_package(parser, namespace, self.dest, package_parts) 

except ValueError as exc: 

raise parser.error(str(exc)) 

 

 

class RegistryHost(argparse.Action): 

def __call__(self, parser, namespace, value, option_string=None): 

setattr(namespace, self.dest, value[0]) 

 

 

class PackageSplit(argparse.Action): 

def __call__(self, parser, namespace, value, option_string=None): 

name = value 

package_parts = split_package_name(name) 

_set_package(parser, namespace, self.dest, package_parts) 

 

 

class LoadVariables(argparse.Action): 

 

def _parse_cmd(self, var): 

r = {} 

try: 

return json.loads(var) 

except: 

for v in var.split(","): 

sp = re.match("(.+?)=(.+)", v) 

if sp is None: 

raise ValueError("Malformed variable: %s" % v) 

key, value = sp.group(1), sp.group(2) 

r[key] = value 

return r 

 

def _load_from_file(self, filename, ext): 

with open(filename, 'r') as f: 

if ext in ['.yml', '.yaml']: 

return yaml.load(f.read()) 

elif ext == '.json': 

return json.loads(f.read()) 

elif ext in [".jsonnet", "libjsonnet"]: 

r = RenderJsonnet() 

return r.render_jsonnet(f.read()) 

else: 

raise ValueError("File extension is not in [yaml, json, jsonnet]: %s" % filename) 

 

def load_variables(self, var): 

_, ext = os.path.splitext(var) 

if ext not in ['.yaml', '.yml', '.json', '.jsonnet']: 

return self._parse_cmd(var) 

else: 

return self._load_from_file(var, ext) 

 

def __call__(self, parser, namespace, values, option_string=None): 

items = copy.copy(argparse._ensure_value(namespace, self.dest, {})) 

try: 

items.update(self.load_variables(values)) 

except ValueError as exc: 

raise parser.error(option_string + ": " + str(exc)) 

setattr(namespace, self.dest, items) 

 

 

class CommandBase(object): 

name = 'command-base' 

help_message = 'describe the command' 

RegistryClient = ApprClient 

default_media_type = None 

parse_unknown = False 

output_default = 'text' 

 

def __init__(self, args_options, unknown=None): 

self.unknown = unknown 

self.args_options = args_options 

self.output = args_options.output 

 

def render(self): 

if self.output == 'none': 

return 

elif self.output == 'json': 

self._render_json() 

elif self.output == 'yaml': 

self._render_yaml() 

else: 

print(self._render_console()) 

 

@classmethod 

def call(cls, options, unknown=None, render=True): 

# @TODO(ant31): all methods should have the 'unknown' parameter 

if cls.parse_unknown: 

obj = cls(options, unknown) 

else: 

obj = cls(options) 

obj.exec_cmd(render=render) 

 

def exec_cmd(self, render=True): 

try: 

self._call() 

except requests.exceptions.RequestException as exc: 

payload = {"message": str(exc)} 

if exc.response is not None: 

payload["response"] = exc.response.content 

raise argparse.ArgumentTypeError("\n" + yaml.safe_dump( 

payload, default_flow_style=False, width=float("inf"))) 

if render: 

self.render() 

 

@classmethod 

def add_parser(cls, subparsers): 

parser = subparsers.add_parser(cls.name, help=cls.help_message) 

cls._add_output_option(parser) 

cls._add_arguments(parser) 

parser.set_defaults(func=cls.call, which_cmd=cls.name, parse_unknown=cls.parse_unknown) 

 

def _render_json(self): 

print(json.dumps(self._render_dict(), indent=2, separators=(',', ': '))) 

 

def _render_dict(self): 

raise NotImplementedError 

 

def _render_console(self): 

raise NotImplementedError 

 

def _render_yaml(self): 

print(yaml.safe_dump(self._render_dict(), default_flow_style=False)) 

 

def _call(self): 

raise NotImplementedError 

 

@classmethod 

def _add_arguments(cls, parser): 

raise NotImplementedError 

 

@classmethod 

def _add_registryhost_option(cls, parser): 

parser.add_argument("-H", "--registry-host", default=None, help=argparse.SUPPRESS) 

parser.add_argument("-k", "--insecure", action="store_true", 

default=False, help="turn off verification of the https certificate") 

parser.add_argument("--cacert", nargs='?', default=None, help="CA certificate to verify peer against (SSL)") 

 

@classmethod 

def _add_output_option(cls, parser): 

parser.add_argument("--output", default=cls.output_default, choices=['text', 'none', 'json', 'yaml'], 

help="output format") 

 

@classmethod 

def _add_mediatype_option(cls, parser, default=None, required=True): 

if default is None: 

default = cls.default_media_type 

if default is not None: 

required = False 

 

parser.add_argument( 

"-t", "--media-type", default=default, required=required, 

help='package format: [kpm, kpm-compose, helm, docker-compose, kubernetes]') 

 

@classmethod 

def _add_packagename_option(cls, parser): 

parser.add_argument('package', nargs=1, default=None, action=PackageName, 

help="package-name") 

 

@classmethod 

def _add_packagesplit_option(cls, parser): 

parser.add_argument('package', nargs="?", default=None, action=PackageSplit, 

help="registry-host.com/namespace/name") 

 

@classmethod 

def _add_packageversion_option(cls, parser): 

parser.add_argument("-v", "--version", help="package VERSION", default='default') 

 

@classmethod 

def _add_registryhost_arg(cls, parser): 

parser.add_argument("registry_host", nargs=1, action=RegistryHost, help='registry API url') 

parser.add_argument("-k", "--insecure", action="store_true", 

default=False, help="turn off verification of the https certificate") 

parser.add_argument("--cacert", nargs='?', default=None, help="CA certificate to verify peer against (SSL)")