def post_pfs_paths(
url: str, token_network_address: TokenNetworkAddress,
payload: Dict[str, Any]) -> Tuple[List[Dict[str, Any]], UUID]:
try:
response = requests.post(
f"{url}/api/v1/{to_checksum_address(token_network_address)}/paths",
json=payload,
timeout=DEFAULT_HTTP_REQUEST_TIMEOUT,
)
except requests.RequestException as e:
raise ServiceRequestFailed(
f"Could not connect to Pathfinding Service ({str(e)})",
dict(parameters=payload, exc_info=True),
)
if response.status_code != 200:
info = {"http_error": response.status_code}
try:
response_json = get_response_json(response)
except ValueError:
log.error(
"Pathfinding Service returned error code (malformed json in response)",
response=response,
)
raise ServiceRequestFailed(
"Pathfinding Service returned error code (malformed json in response)",
info)
error = info["error"] = response_json.get("errors")
error_code = info["error_code"] = response_json.get("error_code", 0)
if PFSError.is_iou_rejected(error_code):
raise ServiceRequestIOURejected(error, error_code)
raise ServiceRequestFailed(error, info)
try:
response_json = get_response_json(response)
return response_json["result"], UUID(response_json["feedback_token"])
except KeyError:
raise ServiceRequestFailed(
"Answer from Pathfinding Service not understood ('result' field missing)",
dict(response=get_response_json(response)),
)
except ValueError:
raise ServiceRequestFailed(
"Pathfinding Service returned invalid json",
dict(response_text=response.text, exc_info=True),
)
def get_pfs_info(url: str) -> PFSInfo:
try:
response = requests.get(f"{url}/api/v1/info",
timeout=DEFAULT_HTTP_REQUEST_TIMEOUT)
infos = get_response_json(response)
return PFSInfo(
url=url,
price=infos["price_info"],
chain_id=infos["network_info"]["chain_id"],
token_network_registry_address=TokenNetworkRegistryAddress(
to_canonical_address(
infos["network_info"]["token_network_registry_address"])),
user_deposit_address=Address(
to_canonical_address(
infos["network_info"]["user_deposit_address"])),
payment_address=to_canonical_address(infos["payment_address"]),
message=infos["message"],
operator=infos["operator"],
version=infos["version"],
)
except requests.exceptions.RequestException as e:
msg = "Selected Pathfinding Service did not respond"
raise ServiceRequestFailed(msg) from e
except (json.JSONDecodeError, requests.exceptions.RequestException,
KeyError) as e:
msg = "Selected Pathfinding Service returned unexpected reply"
raise ServiceRequestFailed(msg) from e
def get_pfs_info(url: str) -> PFSInfo:
try:
response = session.get(f"{url}/api/v1/info")
infos = get_response_json(response)
matrix_server_info = urlparse(infos["matrix_server"])
return PFSInfo(
url=url,
price=infos["price_info"],
chain_id=infos["network_info"]["chain_id"],
token_network_registry_address=TokenNetworkRegistryAddress(
to_canonical_address(infos["network_info"]["token_network_registry_address"])
),
user_deposit_address=Address(
to_canonical_address(infos["network_info"]["user_deposit_address"])
),
payment_address=to_canonical_address(infos["payment_address"]),
message=infos["message"],
operator=infos["operator"],
version=infos["version"],
confirmed_block_number=infos["network_info"]["confirmed_block"]["number"],
matrix_server=matrix_server_info.netloc,
matrix_room_id=infos.get("matrix_room_id"),
)
except RequestException as e:
msg = "Selected Pathfinding Service did not respond"
raise ServiceRequestFailed(msg) from e
except (json.JSONDecodeError, KeyError, ValueError) as e:
msg = "Selected Pathfinding Service returned unexpected reply"
raise ServiceRequestFailed(msg) from e
def post_pfs_paths(
url: str, token_network_address: TokenNetworkAddress, payload: Dict[str, Any]
) -> Tuple[List[Dict[str, Any]], UUID]:
try:
response = session.post(
f"{url}/api/v1/{to_checksum_address(token_network_address)}/paths", json=payload
)
except RequestException as e:
raise ServiceRequestFailed(
f"Could not connect to Pathfinding Service ({str(e)})",
dict(parameters=payload, exc_info=True),
)
if response.status_code != 200:
try:
response_json = get_response_json(response)
except ValueError:
log.error(
"Pathfinding Service returned error code (malformed json in response)",
response=response,
)
raise ServiceRequestFailed(
"Pathfinding Service returned error code (malformed json in response)",
{"http_error": response.status_code},
)
raise PFSReturnedError.from_response(response_json)
try:
response_json = get_response_json(response)
return response_json["result"], UUID(response_json["feedback_token"])
except KeyError:
raise ServiceRequestFailed(
"Answer from Pathfinding Service not understood ('result' field missing)",
dict(response=get_response_json(response)),
)
except ValueError:
raise ServiceRequestFailed(
"Pathfinding Service returned invalid json",
dict(response_text=response.text, exc_info=True),
)
def get_pfs_info(url: str) -> PFSInfo:
try:
response = requests.get(f"{url}/api/v1/info",
timeout=DEFAULT_HTTP_REQUEST_TIMEOUT)
infos = get_response_json(response)
return PFSInfo(
url=url,
price=infos["price_info"],
chain_id=infos["network_info"]["chain_id"],
token_network_registry_address=TokenNetworkRegistryAddress(
to_canonical_address(
infos["network_info"]["registry_address"])),
payment_address=to_canonical_address(infos["payment_address"]),
message=infos["message"],
operator=infos["operator"],
version=infos["version"],
)
except (json.JSONDecodeError, requests.exceptions.RequestException,
KeyError) as e:
raise ServiceRequestFailed(str(e)) from e