175 lines
6.0 KiB
Python
Executable File
175 lines
6.0 KiB
Python
Executable File
#!/usr/bin/env python
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# A service that mocks up various metadata providers. Used for testing,
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# can also be used standalone as a development aid.
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#
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# To run standalone:
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#
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# run: $ systemd-socket-activate -l 8000 python tools/test-cloud-meta-mock.py &
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# $ NM_CLOUD_SETUP_EC2_HOST=http://localhost:8000 \
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# NM_CLOUD_SETUP_LOG=trace \
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# NM_CLOUD_SETUP_EC2=yes src/nm-cloud-setup/nm-cloud-setup
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# or just: $ python tools/test-cloud-meta-mock.py
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#
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# By default, the utility will server some resources for each known cloud
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# providers, for convenience. The tests start this with "--empty" argument,
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# which starts with no resources.
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import os
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import socket
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from sys import argv
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from http.server import HTTPServer
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from http.server import BaseHTTPRequestHandler
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from socketserver import BaseServer
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class MockCloudMDRequestHandler(BaseHTTPRequestHandler):
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"""
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Respond to cloud metadata service requests.
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Currently implements a fairly minimal subset of AWS EC2 API.
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"""
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def log_message(self, format, *args):
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pass
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def do_GET(self):
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path = self.path.encode("ascii")
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if path in self.server._resources:
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self.send_response(200)
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self.end_headers()
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self.wfile.write(self.server._resources[path])
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else:
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self.send_response(404)
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self.end_headers()
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def do_PUT(self):
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path = self.path.encode("ascii")
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if path == b"/latest/api/token":
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self.send_response(200)
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self.end_headers()
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self.wfile.write(
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b"AQAAALH-k7i18JMkK-ORLZQfAa7nkNjQbKwpQPExNHqzk1oL_7eh-A=="
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)
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else:
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length = int(self.headers["content-length"])
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self.server._resources[path] = self.rfile.read(length)
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self.send_response(201)
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self.end_headers()
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def do_DELETE(self):
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path = self.path.encode("ascii")
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if path in self.server._resources:
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del self.server._resources[path]
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self.send_response(204)
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self.end_headers()
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else:
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self.send_response(404)
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self.end_headers()
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class SocketHTTPServer(HTTPServer):
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"""
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A HTTP server that accepts a socket (that has already been
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listen()-ed on). This is useful when the socket is passed
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fron the test runner.
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"""
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def __init__(self, server_address, RequestHandlerClass, socket, resources):
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BaseServer.__init__(self, server_address, RequestHandlerClass)
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self.socket = socket
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self.server_address = self.socket.getsockname()
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self._resources = resources
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def default_resources():
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ec2_macs = b"/2018-09-24/meta-data/network/interfaces/macs/"
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aliyun_meta = b"/2016-01-01/meta-data/"
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aliyun_macs = aliyun_meta + b"network/interfaces/macs/"
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azure_meta = b"/metadata/instance"
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azure_iface = azure_meta + b"/network/interface/"
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azure_query = b"?format=text&api-version=2017-04-02"
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gcp_meta = b"/computeMetadata/v1/instance/"
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gcp_iface = gcp_meta + b"network-interfaces/"
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mac1 = b"9e:c0:3e:92:24:2d"
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mac2 = b"53:e9:7e:52:8d:a8"
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ip1 = b"172.31.26.249"
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ip2 = b"172.31.176.249"
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return {
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b"/latest/meta-data/": b"ami-id\n",
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ec2_macs: mac2 + b"\n" + mac1,
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ec2_macs + mac2 + b"/subnet-ipv4-cidr-block": b"172.31.16.0/20",
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ec2_macs + mac2 + b"/local-ipv4s": ip1,
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ec2_macs + mac1 + b"/subnet-ipv4-cidr-block": b"172.31.166.0/20",
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ec2_macs + mac1 + b"/local-ipv4s": ip2,
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aliyun_meta: b"ami-id\n",
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aliyun_macs: mac2 + b"\n" + mac1,
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aliyun_macs + mac2 + b"/vpc-cidr-block": b"172.31.16.0/20",
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aliyun_macs + mac2 + b"/private-ipv4s": ip1,
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aliyun_macs + mac2 + b"/primary-ip-address": ip1,
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aliyun_macs + mac2 + b"/netmask": b"255.255.255.0",
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aliyun_macs + mac2 + b"/gateway": b"172.31.26.2",
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aliyun_macs + mac1 + b"/vpc-cidr-block": b"172.31.166.0/20",
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aliyun_macs + mac1 + b"/private-ipv4s": ip2,
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aliyun_macs + mac1 + b"/primary-ip-address": ip2,
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aliyun_macs + mac1 + b"/netmask": b"255.255.255.0",
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aliyun_macs + mac1 + b"/gateway": b"172.31.176.2",
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azure_meta + azure_query: b"",
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azure_iface + azure_query: b"0\n1\n",
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azure_iface + b"0/macAddress" + azure_query: mac1,
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azure_iface + b"1/macAddress" + azure_query: mac2,
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azure_iface + b"0/ipv4/ipAddress/" + azure_query: b"0\n",
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azure_iface + b"1/ipv4/ipAddress/" + azure_query: b"0\n",
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azure_iface + b"0/ipv4/ipAddress/0/privateIpAddress" + azure_query: ip1,
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azure_iface + b"1/ipv4/ipAddress/0/privateIpAddress" + azure_query: ip2,
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azure_iface + b"0/ipv4/subnet/0/address/" + azure_query: b"172.31.16.0",
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azure_iface + b"1/ipv4/subnet/0/address/" + azure_query: b"172.31.166.0",
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azure_iface + b"0/ipv4/subnet/0/prefix/" + azure_query: b"20",
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azure_iface + b"1/ipv4/subnet/0/prefix/" + azure_query: b"20",
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gcp_meta + b"id": b"",
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gcp_iface: b"0\n1\n",
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gcp_iface + b"0/mac": mac1,
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gcp_iface + b"1/mac": mac2,
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gcp_iface + b"0/forwarded-ips/": b"0\n",
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gcp_iface + b"0/forwarded-ips/0": ip1,
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gcp_iface + b"1/forwarded-ips/": b"0\n",
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gcp_iface + b"1/forwarded-ips/0": ip2,
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}
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resources = None
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try:
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if argv[1] == "--empty":
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resources = {}
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except IndexError:
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pass
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if resources is None:
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resources = default_resources()
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# See sd_listen_fds(3)
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fileno = os.getenv("LISTEN_FDS")
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if fileno is not None:
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if fileno != "1":
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raise Exception("Bad LISTEN_FDS")
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s = socket.socket(fileno=3)
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else:
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addr = ("localhost", 0)
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s = socket.socket()
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
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s.bind(addr)
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httpd = SocketHTTPServer(None, MockCloudMDRequestHandler, socket=s, resources=resources)
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print("Listening on http://%s:%d" % (httpd.server_address[0], httpd.server_address[1]))
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httpd.server_activate()
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httpd.serve_forever()
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httpd.server_close()
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