97 lines
2.5 KiB
Python
97 lines
2.5 KiB
Python
import os
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import argparse
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from flask import Flask, request
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from flask_restful import Resource, Api
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from werkzeug.exceptions import HTTPException
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from uncloud.common.settings import settings
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from uncloud.shared import shared
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app = Flask(__name__)
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api = Api(app)
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app.logger.handlers.clear()
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arg_parser = argparse.ArgumentParser('metadata', add_help=False)
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arg_parser.add_argument('--port', '-p', default=80, help='By default bind to port 80')
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@app.errorhandler(Exception)
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def handle_exception(e):
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app.logger.error(e)
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# pass through HTTP errors
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if isinstance(e, HTTPException):
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return e
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# now you're handling non-HTTP exceptions only
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return {"message": "Server Error"}, 500
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def get_vm_entry(mac_addr):
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return next(
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filter(
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lambda vm: mac_addr in list(zip(*vm.network))[1],
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shared.vm_pool.vms,
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),
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None,
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)
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# https://stackoverflow.com/questions/37140846/how-to-convert-ipv6-link-local-address-to-mac-address-in-python
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def ipv62mac(ipv6):
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# remove subnet info if given
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subnet_index = ipv6.find("/")
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if subnet_index != -1:
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ipv6 = ipv6[:subnet_index]
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ipv6_parts = ipv6.split(":")
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mac_parts = list()
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for ipv6_part in ipv6_parts[-4:]:
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while len(ipv6_part) < 4:
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ipv6_part = "0" + ipv6_part
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mac_parts.append(ipv6_part[:2])
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mac_parts.append(ipv6_part[-2:])
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# modify parts to match MAC value
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mac_parts[0] = "%02x" % (int(mac_parts[0], 16) ^ 2)
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del mac_parts[4]
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del mac_parts[3]
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return ":".join(mac_parts)
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class Root(Resource):
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@staticmethod
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def get():
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data = get_vm_entry(ipv62mac(request.remote_addr))
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if not data:
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return (
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{"message": "Metadata for such VM does not exists."},
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404,
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)
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else:
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etcd_key = os.path.join(
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settings["etcd"]["user_prefix"],
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data.value["owner_realm"],
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data.value["owner"],
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"key",
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)
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etcd_entry = shared.etcd_client.get_prefix(
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etcd_key, value_in_json=True
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)
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user_personal_ssh_keys = [key.value for key in etcd_entry]
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data.value["metadata"]["ssh-keys"] += user_personal_ssh_keys
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return data.value["metadata"], 200
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api.add_resource(Root, "/")
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def main(port=None, debug=False):
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app.run(debug=debug, host="::", port=port)
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if __name__ == "__main__":
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main()
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