async def communities(participant: Participant, ) -> None:
"""Generate Participant-specific BGP Community Lists."""
log.info("Generating Communities for {}", participant.pretty)
create_file_structure()
participant_comms = template_env.get_template("participant-communities.j2")
for rs in params.route_servers:
result = await participant_comms.render_async(
p=participant, now=datetime.utcnow().isoformat())
output_file = POLICIES_DIR / rs.name / str(
participant.asn) / "communities.ios"
if not output_file.exists():
output_file.touch()
log.debug("Communities for {}\n{}", participant.pretty, result)
with output_file.open("w+") as of:
of.write(result)
if verify_complete(output_file):
log.success(
"Generated Communities for {} at {}",
participant.pretty,
str(output_file),
)
async def route_map(participant: Participant) -> None:
"""Generate Participant-specific Route Maps."""
log.info("Generating Route Maps for {}", participant.pretty)
create_file_structure()
participant_route_map = template_env.get_template(
"participant-route-map.j2")
for rs in params.route_servers:
result = await participant_route_map.render_async(
p=participant,
rs=rs.id,
loc=rs.loc_id,
metro=rs.metro_id,
now=datetime.utcnow().isoformat(),
)
output_file = POLICIES_DIR / rs.name / str(
participant.asn) / "route-map.ios"
if not output_file.exists():
output_file.touch()
log.debug("Route Maps for {}\n{}", participant.pretty, result)
with output_file.open("w+") as of:
of.write(result)
if verify_complete(output_file):
log.success(
"Generated Route Maps for {} at {}",
participant.pretty,
str(output_file),
)
async def bgp(participant: Participant) -> None:
"""Generate Participant-specific BGP Configs."""
log.info("Generating BGP Config for {}", participant.pretty)
create_file_structure()
max4, max6 = await max_prefixes(participant.asn)
for rs in params.route_servers:
output_file = POLICIES_DIR / rs.name / str(participant.asn) / "bgp.ios"
if not output_file.exists():
output_file.touch()
template = template_env.get_template("participant-bgp.j2")
result = await template.render_async(p=participant,
max4=max4,
max6=max6,
now=datetime.utcnow().isoformat())
log.debug("BGP Config for {}\n{}", participant.pretty, result)
with output_file.open("w+") as of:
of.write(result)
if verify_complete(output_file):
log.success(
"Generated BGP Config for {} at {}",
participant.pretty,
str(output_file),
)
async def run_whois(query: str) -> AsyncGenerator[str, None]:
"""Open raw socket to IRRd host and execute query."""
# Open the socket to IRRd
log.debug("Opening connection to IRRd server")
reader, writer = await asyncio.open_connection("rr.ntt.net", port=43)
# Send the query
writer.write(query.encode())
await writer.drain()
# Read the response
response = b""
while True:
data = await reader.read(128)
if data:
response += data
else:
log.debug("Closing connection to IRRd server")
writer.close()
break
if writer.can_write_eof():
writer.write_eof()
items = ",".join(response.decode().split()[1:-1]).split(",")
for item in (i for i in items if i):
yield item
async def send_policy(route_server: RouteServer, wait: int) -> str:
"""Read a generated policy & send it to a route server."""
result = ""
# Optionally block pause of execution.
if wait:
log.info("Waiting {} seconds before proceeding with update", wait)
time.sleep(wait)
try:
connection: Connection = rpyc.connect(route_server.name,
params.agent.port,
ipv6=True)
except ConnectionRefusedError:
result = "Connection refused to {}:{}".format(route_server.name,
params.agent.port)
except gaierror:
result = "Route Server {}:{} is unreachable".format(
route_server.name, params.agent.port)
# If an error has occurred, stop here & return a valuable error
# message.
if result:
log.critical(result)
await send_webhook(route_server.name, "Route Policy Error", result)
return result
config_file = POLICIES_DIR / route_server.name / "_all.ios"
# Read the combined configuration file & generate a SHA256 digest of
# its content. Then, encrypt the content, and generate another
# SHA256 digest of the encrypted contents.
with config_file.open("r") as f:
payload, predigest, postdigest = create_payload(f.read())
log.debug("Pre Encryption Digest: {}", predigest)
log.debug("Post Encryption Digest: {}", postdigest)
while not connection.closed:
log.info("Sending Policy to Route Server {} ({})", route_server.name,
predigest)
# Send the preflight payload digests.
connection.root.set_digest(postdigest, predigest)
# Send the encrypted payload.
response = connection.root.push_policy(payload)
result = "{}: {}".format(route_server.name, response)
log.success(result)
break
# Gracefully close the connection.
connection.close()
await send_webhook(route_server.name, "Route Policy Update", result)
return result
async def send_webhook(title: str, summary: str, message: str) -> None:
"""Send a Slack webhook."""
generated = generate_policy_block(title, summary, message)
log.debug("Generated Slack hook:\n{}", generated)
try:
async with AsyncClient(base_url="https://hooks.slack.com") as client:
await client.post(
str(params.slack.webhook.path),
json=generated,
)
except Exception as err:
log.error(str(err))
async def get_as_set(asn: str) -> Sequence[str]:
"""Search PeeringDB for an entry matching an ASN and return its IRR AS_Set."""
result = []
async with AsyncClient(
http2=True,
verify=True,
base_url="https://peeringdb.com",
headers={"Accept": "application/json"},
) as client:
log.debug("Getting max prefixes for AS{}", asn)
res = await client.get("/api/net", params={"asn__contains": asn})
res.raise_for_status()
for data in res.json()["data"]:
if "asn" in data and str(data["asn"]) == asn:
log.debug("Matched AS{} to {}", str(asn), data["name"])
log.debug(
"AS{} PeeringDB Org ID {}, last updated {}",
str(asn),
str(data["org_id"]),
data["updated"],
)
as_set = data.get("irr_as_set", "")
if as_set != "":
result = as_set.split(" ")
log.debug("Found AS-Set(s) {} for {}", result,
data["name"])
break
return result
async def max_prefixes(asn: int) -> Tuple[int, int]:
"""Search PeeringDB for an entry matching an ASN and return its max prefixes."""
prefixes = (200, 20)
async with AsyncClient(
http2=True,
verify=True,
base_url="https://peeringdb.com",
headers={"Accept": "application/json"},
) as client:
log.debug("Getting max prefixes for AS{}", str(asn))
res = await client.get("/api/net", params={"asn__contains": asn})
res.raise_for_status()
for data in res.json()["data"]:
if "asn" in data and data["asn"] == asn:
log.debug("Matched AS{} to {}", str(asn), data["name"])
log.debug(
"AS{} PeeringDB Org ID {}, last updated {}",
str(asn),
str(data["org_id"]),
data["updated"],
)
prefixes = (
data.get("info_prefixes4", 200),
data.get("info_prefixes6", 20),
)
return prefixes
async def prefixes(participant: Participant) -> None:
"""Generate Participant-specific Prefix Lists."""
log.info("Generating Prefix Lists for {}", participant.pretty)
create_file_structure()
for rs in params.route_servers:
async for family, render in render_prefixes(
participant,
max_ipv4=params.max_length.ipv4,
max_ipv6=params.max_length.ipv6,
template_env=template_env,
):
output_file = (POLICIES_DIR / rs.name / str(participant.asn) /
f"prefix-list-ipv{family}.ios")
if not output_file.exists():
output_file.touch()
rendered = await render
log.debug(
"IPv{} Prefix List for {}\n{}",
family,
participant.pretty,
rendered,
)
with output_file.open("w") as of:
of.write(rendered)
if verify_complete(output_file):
log.success(
"Generated IPv{} Prefix Lists for {} at {}",
family,
participant.pretty,
str(output_file),
)
def create_file_structure() -> bool:
"""Gracefully create output policy file structure."""
if not POLICIES_DIR.exists():
log.debug("Creating {}", str(POLICIES_DIR))
POLICIES_DIR.mkdir()
for rs in params.route_servers:
rs_dir = POLICIES_DIR / rs.name
if not rs_dir.exists():
log.debug("Creating {}", str(rs_dir))
rs_dir.mkdir()
for participant in params.participants:
participant_dir = rs_dir / str(participant.asn)
if not participant_dir.exists():
log.debug("Creating {}", str(participant_dir))
participant_dir.mkdir()
return True
async def send_acls( # noqa: C901 your mom's too complex
switches: List[Switch], participants: List[Participant]) -> str:
"""Send ACLs to IX switches, only if updates are required."""
messages: Tuple[str, ...] = ()
# Determine if an ACL push is required.
async for participant in requires_update(switches, participants):
for switch in switches:
async with AsyncClient(
auth=((switch.username,
switch.password.get_secret_value())),
verify=False,
) as client:
p_messages: Tuple[str, ...] = ()
p_errors: Tuple[str, ...] = ()
acl4 = await generate_acl4(participant)
acl6 = await generate_acl6(participant)
push_id = (
f"{participant.pretty} ACL Push {datetime.utcnow().isoformat()}"
)
data = {
"id": push_id,
"jsonrpc": "2.0",
"method": "runCmds",
"params": {
"version": 1,
"format": "json",
"timestamps": False,
"autoComplete": False,
"expandAliases": False,
"cmds": [
"configure",
*acl4,
*acl6,
],
},
}
log.info("Sending {} ACLs to {}", participant.pretty,
switch.name)
log.debug(json.dumps(data, indent=2))
res = await client.post(
f"https://{str(switch.address)}/command-api", json=data)
res_json = res.json()
# Handle errors returned from the switch.
if "error" in res_json:
res_error: Tuple[str, ...] = ()
error_data = [
d for d in res_json["error"].get("data", [])
if "errors" in d
]
for d in error_data:
for e in d.get("errors", []):
res_error += (e, )
if "message" in res_json["error"]:
res_error += (res_json["error"]["message"], )
p_errors += (", ".join(res_error), )
# Handle non-error messages returned from the switch.
elif "result" in res_json:
for d in [d for d in res_json["result"] if d]:
p_messages += (d, )
if len(p_errors) == 0:
messages += ("{} ACLs updated on {}".format(
participant.pretty, str(switch.address)), )
for err in p_errors:
msg = "Error while sending {} ACLs to {}:\n{}".format(
participant.pretty, str(switch.address), err)
log.error(msg)
messages += (msg, )
for m in p_messages:
msg = "Response while sending {} ACLs to {}:\n{}".format(
participant.pretty,
str(switch.address),
m,
)
log.info(msg)
messages += (msg, )
if len(messages) == 0:
message = "No particiapant ACLs require updates."
else:
message = ", ".join(messages)
await send_webhook("Detail", "Switch ACL Updates", "\n".join(messages)
or message)
return message