tradehub.decentralized_client.NetworkCrawlerClient.__init__() - Code Metrics - Inspection of "Merge pull request #47 from Mai-Te-Pora/bugfix/nod..." - Mai-Te-Pora/tradehub-python - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — main ( ac2663...40d33d )

by Switcheolytics

created 2021-03-13 05:49 UTC

NetworkCrawlerClient.init() D

↳ Parent: tradehub.decentralized_client

Complexity

Conditions

Size

Total Lines	77
Code Lines	56

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	13
eloc	56
nop	6
dl	0
loc	77
rs	4.2
c	0
b	0
f	0

How to fix Long Method Complexity

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

If many parameters/temporary variables are present:
- Replace temporary variables with Query
- Introduce parameter object; often combined with preserve whole object
- If the above two are insufficient: Replace method with method object
If you have long conditionals: Decompose Conditional
Otherwise: Extract method

Complexity

Complex classes like tradehub.decentralized_client.NetworkCrawlerClient.__init__() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

"""
Description:

    Decentralized Client Class for Crawling the Tradehub network.
    This client is the basis to all classes because it allows network calls to fail over to other nodes.
    This class is designed to find available public nodes to interact with for API and Websocket calls.

Usage::

    from tradehub.decentralized_client import NetworkCrawlerClient
"""

import multiprocessing as mp
from tradehub.utils import Request
import random
from requests.exceptions import ConnectionError, HTTPError, Timeout
import socket
# import threading


class NetworkCrawlerClient(object):
    """
    This class crawls the Switcheo Validator network to build a list of accessible endpoints for APIs and Websockets.
    Execution of this function is as follows::

        NetworkCrawlerClient(network='mainnet',
                             trusted_ip_list=None,
                             trusted_uri_list=None,
                             is_secure=False,
                             is_websocket_client=True)
    """

    def __init__(self,
                 network: str = "testnet",
                 trusted_ip_list: list = None,
                 trusted_uri_list: list = None,
                 is_secure: bool = False,
                 is_websocket_client: bool = False):
        """
        :param network: The network you want to interact with. Accepts "testnet" or "mainnet".
        :type network: str
        :param trusted_ip_list: Known and trusted IPs to connect to for your API requests.
        :type trusted_ip_list: list
        :param trusted_uri_list: Known and trusted URIs to connect to for your API requests.
        :type trusted_uri_list: list
        :param is_secure: Flag for setting secure connection on or off.
        :type is_secure: bool
        :param is_websocket_client: Flag for finding and setting websocket variables.
        :type is_websocket_client: bool
        """
        if network.lower() not in ["main", "mainnet", "test", "testnet"]:
            raise ValueError("Parameter network - {} - is not valid, requires main, mainnent, test, or testnet.".format(network))

        if trusted_ip_list and trusted_uri_list:
            raise ValueError("Can't use both IP and URI list, only pass one option.")

        if trusted_ip_list or trusted_uri_list:
            self.BYPASS_NETWORK_CRAWLER = True
        else:
            self.BYPASS_NETWORK_CRAWLER = False

        self.is_secure = is_secure
        if self.is_secure:
            self.http_string = 'https'
            self.ws_string = 'wss'
        else:
            self.http_string = 'http'
            self.ws_string = 'ws'
        self.is_websocket_client = is_websocket_client
        self.active_ws_uri_list = []

        if not self.BYPASS_NETWORK_CRAWLER:
            self.seed_peers_list = {
                "main": ["54.255.5.46", "175.41.151.35"],
                "mainnet": ["54.255.5.46", "175.41.151.35"],
                "test": ["54.255.42.175", "52.220.152.108"],
                "testnet": ["54.255.42.175", "52.220.152.108"],
            }
            self.tradescan_node_url = {
                "main": "https://switcheo.org/nodes?net=main",
                "mainnet": "https://switcheo.org/nodes?net=main",
                "test": "https://switcheo.org/nodes?net=test",
                "testnet": "https://switcheo.org/nodes?net=test",
            }

            self.all_peers_list = self.seed_peers_list[network.lower()]
            self.active_validator_list = []
            self.active_sentry_api_list = []
            self.validator_crawler_mp()
            self.sentry_status_request(uri=False)
        elif trusted_ip_list:
            self.all_peers_list = trusted_ip_list
            self.active_validator_list = trusted_ip_list
            self.active_sentry_api_list = []
            self.sentry_status_request(uri=False)
            if not self.active_sentry_api_list:
                self.active_sentry_api_list = trusted_ip_list
        elif trusted_uri_list:
            self.all_peers_list = trusted_uri_list
            self.active_validator_list = trusted_uri_list
            self.active_sentry_api_list = []
            self.sentry_status_request(uri=True)
            if not self.active_sentry_api_list:
                self.active_sentry_api_list = trusted_uri_list
        self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
        self.active_sentry_api_ip = self.active_sentry_uri.split(':')[1][2:]
        if self.is_websocket_client:
            self.active_ws_uri = self.active_ws_uri_list[random.randint(a=0, b=len(self.active_ws_uri_list)-1)]
            self.active_ws_ip = self.active_ws_uri.split(':')[1][2:]

    def validator_crawler_mp(self):
        """
        Crawl the Tradehub Validators to test for available API endpoints.

        Execution of this function is as follows::

            validator_crawler_mp()
        """
        checked_peers_list = []
        unchecked_peers_list = list(set(self.all_peers_list) - set(checked_peers_list))

        while unchecked_peers_list:

            pool = mp.Pool(processes=10)
            validator_outputs = pool.map(self.validator_status_request, unchecked_peers_list)
            pool.close()
            pool.join()

            for validator in validator_outputs:
                self.all_peers_list.append(validator["ip"])
                checked_peers_list.append(validator["ip"])
                if validator["validator_status"] == "Active" and not validator["catching_up"]:
                    self.active_validator_list.append(validator["ip"])
                for connected_node in validator["connected_nodes"]:
                    self.all_peers_list.append(connected_node["node_ip"])

            self.all_peers_list = list(dict.fromkeys(self.all_peers_list))
            checked_peers_list = list(dict.fromkeys(checked_peers_list))
            self.active_validator_list = list(dict.fromkeys(self.active_validator_list))
            unchecked_peers_list = list(set(self.all_peers_list) - set(checked_peers_list))

            # If the initial peers do not return any reults, query Tradescan API.
            # if not self.active_peers_list:
            #     validators = Request(api_url=self.tradescan_node_url, timeout=30).get()
            #     for validator in validators:
            #         unchecked_peers_list.append(validator["ip"])

    def validator_status_request(self, validator_ip: str):
        """
        Function that makes the network requests to the Tradehub validators across the network.

        Execution of this function is as follows::

            validator_status_request(validator_ip='54.255.5.46')

        The expected return result for this function is as follows::

            {
                'moniker': 'spock',
                'id': 'ca1189045e84d2be5db0a1ed326ce7cd56015f11',
                'ip': '54.255.5.46',
                'version': '0.33.7',
                'network': 'switcheo-tradehub-1',
                'latest_block_hash': 'DF194D43058D3CD89DD98A7DA28164B239B9693C822A1DB16CCC27FB49CA587B',
                'latest_block_height': '7995864',
                'latest_block_time': '2021-02-27T19:51:00.162091183Z',
                'earliest_block_height': '1',
                'earliest_block_time': '2020-08-14T07:32:27.856700491Z',
                'catching_up': False,
                'validator_address': '7091A72888509B3F3069231081621DC988D63542',
                'validator_pub_key_type': 'tendermint/PubKeyEd25519',
                'validator_pub_key': 'epMp0h65WflL7r8tPGQwusVMbCHgy7ucRg8eDlEJPW0=',
                'validator_voting_power': '0',
                'validator_status': 'Active',
                'connected_nodes': [
                    {
                        'node_id': 'd57a64f41487b5e421e91b71dceb0784cae57733',
                        'node_ip': '195.201.82.228',
                        'node_full': '[email protected]'
                    },
                    ...
                ]
            }

        :param validator_ip: String of the IP address to connect to.
        :return: Dictionary of validators that the crawler has found with the status.
        """
        validator_status = {}
        try:
            process_peer = True
            validator_status["ip"] = validator_ip
            i = Request(api_url="{}://{}:26657".format(self.http_string, validator_ip), timeout=1).get(path='/net_info')
        except (ValueError, ConnectionError, HTTPError, Timeout) as e:
            validator_status["validator_status"] = "Unknown - Cannot Connect to Retrieve Validator INFO - {}".format(e)
            validator_status["connected_nodes"] = []
            process_peer = False

        if process_peer:
            connected_nodes = []

            for connected_peer in i["result"]["peers"]:
                connected_nodes.append({
                    "node_id": connected_peer["node_info"]["id"],
                    "node_ip": connected_peer["remote_ip"],
                    "node_full": "{}@{}".format(connected_peer["node_info"]["id"], connected_peer["remote_ip"])
                })

            try:
                s = Request(api_url="{}://{}:26657".format(self.http_string, validator_ip), timeout=1).get(path='/status')
            except (ValueError, ConnectionError, HTTPError, Timeout) as e:
                validator_status["validator_status"] = "Unknown - Cannot Connect to Retrieve Status end point - {}".format(e)
                validator_status["connected_nodes"] = []
                process_peer = False

            if process_peer:
                validator_status = self.parse_validator_status(request_json=s, validator_ip=validator_ip)
                validator_status["validator_status"] = "Active"
                validator_status["connected_nodes"] = connected_nodes

        return validator_status

    def parse_validator_status(self, request_json: dict, validator_ip: str):
        """
        Function to parse each peer's JSON element and build information about each.

        Execution of this function is as follows::

            parse_validator_status(request_json='/status', validator_ip='54.255.5.46')

        The expected return result for this function is as follows::

            {
                'moniker': 'spock',
                'id': 'ca1189045e84d2be5db0a1ed326ce7cd56015f11',
                'ip': '54.255.5.46',
                'version': '0.33.7',
                'network': 'switcheo-tradehub-1',
                'latest_block_hash': 'DF194D43058D3CD89DD98A7DA28164B239B9693C822A1DB16CCC27FB49CA587B',
                'latest_block_height': '7995864',
                'latest_block_time': '2021-02-27T19:51:00.162091183Z',
                'earliest_block_height': '1',
                'earliest_block_time': '2020-08-14T07:32:27.856700491Z',
                'catching_up': False,
                'validator_address': '7091A72888509B3F3069231081621DC988D63542',
                'validator_pub_key_type': 'tendermint/PubKeyEd25519',
                'validator_pub_key': 'epMp0h65WflL7r8tPGQwusVMbCHgy7ucRg8eDlEJPW0=',
                'validator_voting_power': '0'
            }

        :param request_json: Dictionary of the return response from the validator status request.
        :param validator_ip: String of the IP address to connect to.
        :return: Dictionary of validator information.
        """
        return {
            "moniker": request_json["result"]["node_info"]["moniker"],
            "id": request_json["result"]["node_info"]["id"],
            "ip": validator_ip,
            "version": request_json["result"]["node_info"]["version"],
            "network": request_json["result"]["node_info"]["network"],
            "latest_block_hash": request_json["result"]["sync_info"]["latest_block_hash"],
            "latest_block_height": request_json["result"]["sync_info"]["latest_block_height"],
            "latest_block_time": request_json["result"]["sync_info"]["latest_block_time"],
            "earliest_block_height": request_json["result"]["sync_info"]["earliest_block_height"],
            "earliest_block_time": request_json["result"]["sync_info"]["earliest_block_time"],
            "catching_up": request_json["result"]["sync_info"]["catching_up"],
            "validator_address": request_json["result"]["validator_info"]["address"],
            "validator_pub_key_type": request_json["result"]["validator_info"]["pub_key"]["type"],
            "validator_pub_key": request_json["result"]["validator_info"]["pub_key"]["value"],
            "validator_voting_power": request_json["result"]["validator_info"]["voting_power"]
        }

    def sentry_status_request(self, uri: bool = False):
        """
        This function is here to ensure the nodes that have open network connections also have their persistence service running.
        Many times the network connection is open for communication but the persistence service will not be on.

        Execution of this function is as follows::

            sentry_status_request(uri=True)

        :param uri: Bool value for a URI or IP address.
        """
        for active_validator in self.active_validator_list:
            if uri:
                try:
                    # Have to check the "/get_status" endpoint because the port could be open and the validator fully synced but have the persistence service inactive, shutdown, stopped, or non-repsonsive.
                    Request(api_url=active_validator, timeout=1).get(path='/get_status')
                    self.active_sentry_api_list.append(active_validator)
                    if self.is_websocket_client:
                        self.websocket_status_check(ip=active_validator)
                except (ValueError, ConnectionError, HTTPError, Timeout):
                    pass
            else:
                # 1318 - Cosmos REST; 5001 - Demex REST; 5002 - Reverse Proxy for Demex and Cosmos REST; Recommended to not use proxy
                for port in ["5001"]:
                    try:
                        # Have to check the "/get_status" endpoint because the port could be open and the validator fully synced but have the persistence service inactive, shutdown, stopped, or non-repsonsive.
                        Request(api_url="{}://{}:{}".format(self.http_string, active_validator, port), timeout=1).get(path='/get_status')
                        self.active_sentry_api_list.append('{}://{}:{}'.format(self.http_string, active_validator, port))
                        if self.is_websocket_client:
                            self.websocket_status_check(ip=active_validator)
                    except (ValueError, ConnectionError, HTTPError, Timeout):
                        pass

        self.active_sentry_api_list = list(dict.fromkeys(self.active_sentry_api_list))
        self.active_ws_uri_list = list(dict.fromkeys(self.active_ws_uri_list))

    def websocket_status_check(self, ip: str, port: int = 5000):
        """
        Function to check if the websocket port is open for communication.
        This is called as part of the sentry check because calling the websocket also requires the persistence service to be available.

        Execution of this function is as follows::

            websocket_status_check(ip='54.255.5.46', port=5000)

        :param ip: String of the IP address to connect to.
        :param port: Int value for the port to be checked.
        """
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            location = (ip, port)
            result_of_check = s.connect_ex(location)
            if result_of_check == 0:
                self.active_ws_uri_list.append('{}://{}:{}/ws'.format(self.ws_string, ip, port))
            s.close()
        except socket.error:
            pass

    # def update_validators_and_sentries(self):
    #     threading.Timer(5.0, self.update_validators_and_sentries).start()
    #     self.validator_crawler_mp()
    #     self.sentry_status_request()
    #     self.active_sentry_api_ip = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]

    def tradehub_get_request(self, path: str, params: dict = None):
        """
        This is a wrapper for the get request function to allow for retrying network calls on different available validators if a request fails.

        Execution of this function is as follows::

            tradehub_get_request(path='/txs')

        :param path: String of the path being used for the network request that is going to be made.
        :param params: Dict values that will added to the get request.
        :return: Dictionary of the return request based on the network path sent.
        """
        try:
            req = Request(api_url=self.active_sentry_uri, timeout=2).get(path=path, params=params)
            return req
        except (ValueError, ConnectionError, HTTPError, Timeout):
            self.active_sentry_api_list.remove(self.active_sentry_uri)
            if not self.active_sentry_api_list and not self.BYPASS_NETWORK_CRAWLER:
                self.validator_crawler_mp()
                self.sentry_status_request()
            elif not self.active_sentry_api_list and self.BYPASS_NETWORK_CRAWLER:
                raise ValueError("Provided Sentry API IP addresses are not responding.")
            self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
            return self.tradehub_get_request(path=path, params=params)

    def tradehub_post_request(self, path: str, data: dict = None, json_data: dict = None, params: dict = None):
        """
        This is a wrapper for the post request function to allow for retrying network calls on different available validators if a request fails.

        Execution of this function is as follows::

            tradehub_post_request(path='/txs')

        :param path: String of the path being used for the network request that is going to be made.
        :param data: Dict values that will added to the post request.
        :param json_data: Dict values that will added to the post request.
        :param params: Dict values that will added to the post request.
        :return: Dictionary of the return request based on the network path sent.
        """
        try:
            req = Request(api_url=self.active_sentry_uri, timeout=2).post(path=path, data=data, json_data=json_data, params=params)
            return req
        except (ValueError, ConnectionError, HTTPError, Timeout):
            self.active_sentry_api_list.remove(self.active_sentry_uri)
            if not self.active_sentry_api_list and not self.BYPASS_NETWORK_CRAWLER:
                self.validator_crawler_mp()
                self.sentry_status_request()
            elif not self.active_sentry_api_list and self.BYPASS_NETWORK_CRAWLER:
                raise ValueError("Provided Sentry API IP addresses are not responding.")
            self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
            return self.tradehub_post_request(path=path, data=data, json_data=json_data, params=params)


1			"""
2			Description:
3
4			Decentralized Client Class for Crawling the Tradehub network.
5			This client is the basis to all classes because it allows network calls to fail over to other nodes.
6			This class is designed to find available public nodes to interact with for API and Websocket calls.
7
8			Usage::
9
10			from tradehub.decentralized_client import NetworkCrawlerClient
11			"""
12
13			import multiprocessing as mp
14			from tradehub.utils import Request
15			import random
16			from requests.exceptions import ConnectionError, HTTPError, Timeout
17			import socket
18			# import threading
19
20
21			class NetworkCrawlerClient(object):
22			"""
23			This class crawls the Switcheo Validator network to build a list of accessible endpoints for APIs and Websockets.
24			Execution of this function is as follows::
25
26			NetworkCrawlerClient(network='mainnet',
27			trusted_ip_list=None,
28			trusted_uri_list=None,
29			is_secure=False,
30			is_websocket_client=True)
31			"""
32
33			def __init__(self,
34			network: str = "testnet",
35			trusted_ip_list: list = None,
36			trusted_uri_list: list = None,
37			is_secure: bool = False,
38			is_websocket_client: bool = False):
39			"""
40			:param network: The network you want to interact with. Accepts "testnet" or "mainnet".
41			:type network: str
42			:param trusted_ip_list: Known and trusted IPs to connect to for your API requests.
43			:type trusted_ip_list: list
44			:param trusted_uri_list: Known and trusted URIs to connect to for your API requests.
45			:type trusted_uri_list: list
46			:param is_secure: Flag for setting secure connection on or off.
47			:type is_secure: bool
48			:param is_websocket_client: Flag for finding and setting websocket variables.
49			:type is_websocket_client: bool
50			"""
51			if network.lower() not in ["main", "mainnet", "test", "testnet"]:
52			raise ValueError("Parameter network - {} - is not valid, requires main, mainnent, test, or testnet.".format(network))
53
54			if trusted_ip_list and trusted_uri_list:
55			raise ValueError("Can't use both IP and URI list, only pass one option.")
56
57			if trusted_ip_list or trusted_uri_list:
58			self.BYPASS_NETWORK_CRAWLER = True
59			else:
60			self.BYPASS_NETWORK_CRAWLER = False
61
62			self.is_secure = is_secure
63			if self.is_secure:
64			self.http_string = 'https'
65			self.ws_string = 'wss'
66			else:
67			self.http_string = 'http'
68			self.ws_string = 'ws'
69			self.is_websocket_client = is_websocket_client
70			self.active_ws_uri_list = []
71
72			if not self.BYPASS_NETWORK_CRAWLER:
73			self.seed_peers_list = {
74			"main": ["54.255.5.46", "175.41.151.35"],
75			"mainnet": ["54.255.5.46", "175.41.151.35"],
76			"test": ["54.255.42.175", "52.220.152.108"],
77			"testnet": ["54.255.42.175", "52.220.152.108"],
78			}
79			self.tradescan_node_url = {
80			"main": "https://switcheo.org/nodes?net=main",
81			"mainnet": "https://switcheo.org/nodes?net=main",
82			"test": "https://switcheo.org/nodes?net=test",
83			"testnet": "https://switcheo.org/nodes?net=test",
84			}
85
86			self.all_peers_list = self.seed_peers_list[network.lower()]
87			self.active_validator_list = []
88			self.active_sentry_api_list = []
89			self.validator_crawler_mp()
90			self.sentry_status_request(uri=False)
91			elif trusted_ip_list:
92			self.all_peers_list = trusted_ip_list
93			self.active_validator_list = trusted_ip_list
94			self.active_sentry_api_list = []
95			self.sentry_status_request(uri=False)
96			if not self.active_sentry_api_list:
97			self.active_sentry_api_list = trusted_ip_list
98			elif trusted_uri_list:
99			self.all_peers_list = trusted_uri_list
100			self.active_validator_list = trusted_uri_list
101			self.active_sentry_api_list = []
102			self.sentry_status_request(uri=True)
103			if not self.active_sentry_api_list:
104			self.active_sentry_api_list = trusted_uri_list
105			self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
106			self.active_sentry_api_ip = self.active_sentry_uri.split(':')[1][2:]
107			if self.is_websocket_client:
108			self.active_ws_uri = self.active_ws_uri_list[random.randint(a=0, b=len(self.active_ws_uri_list)-1)]
109			self.active_ws_ip = self.active_ws_uri.split(':')[1][2:]
110
111			def validator_crawler_mp(self):
112			"""
113			Crawl the Tradehub Validators to test for available API endpoints.
114
115			Execution of this function is as follows::
116
117			validator_crawler_mp()
118			"""
119			checked_peers_list = []
120			unchecked_peers_list = list(set(self.all_peers_list) - set(checked_peers_list))
121
122			while unchecked_peers_list:
123
124			pool = mp.Pool(processes=10)
125			validator_outputs = pool.map(self.validator_status_request, unchecked_peers_list)
126			pool.close()
127			pool.join()
128
129			for validator in validator_outputs:
130			self.all_peers_list.append(validator["ip"])
131			checked_peers_list.append(validator["ip"])
132			if validator["validator_status"] == "Active" and not validator["catching_up"]:
133			self.active_validator_list.append(validator["ip"])
134			for connected_node in validator["connected_nodes"]:
135			self.all_peers_list.append(connected_node["node_ip"])
136
137			self.all_peers_list = list(dict.fromkeys(self.all_peers_list))
138			checked_peers_list = list(dict.fromkeys(checked_peers_list))
139			self.active_validator_list = list(dict.fromkeys(self.active_validator_list))
140			unchecked_peers_list = list(set(self.all_peers_list) - set(checked_peers_list))
141
142			# If the initial peers do not return any reults, query Tradescan API.
143			# if not self.active_peers_list:
144			# validators = Request(api_url=self.tradescan_node_url, timeout=30).get()
145			# for validator in validators:
146			# unchecked_peers_list.append(validator["ip"])
147
148			def validator_status_request(self, validator_ip: str):
149			"""
150			Function that makes the network requests to the Tradehub validators across the network.
151
152			Execution of this function is as follows::
153
154			validator_status_request(validator_ip='54.255.5.46')
155
156			The expected return result for this function is as follows::
157
158			{
159			'moniker': 'spock',
160			'id': 'ca1189045e84d2be5db0a1ed326ce7cd56015f11',
161			'ip': '54.255.5.46',
162			'version': '0.33.7',
163			'network': 'switcheo-tradehub-1',
164			'latest_block_hash': 'DF194D43058D3CD89DD98A7DA28164B239B9693C822A1DB16CCC27FB49CA587B',
165			'latest_block_height': '7995864',
166			'latest_block_time': '2021-02-27T19:51:00.162091183Z',
167			'earliest_block_height': '1',
168			'earliest_block_time': '2020-08-14T07:32:27.856700491Z',
169			'catching_up': False,
170			'validator_address': '7091A72888509B3F3069231081621DC988D63542',
171			'validator_pub_key_type': 'tendermint/PubKeyEd25519',
172			'validator_pub_key': 'epMp0h65WflL7r8tPGQwusVMbCHgy7ucRg8eDlEJPW0=',
173			'validator_voting_power': '0',
174			'validator_status': 'Active',
175			'connected_nodes': [
176			{
177			'node_id': 'd57a64f41487b5e421e91b71dceb0784cae57733',
178			'node_ip': '195.201.82.228',
179			'node_full': '[email protected]'
180			},
181			...
182			]
183			}
184
185			:param validator_ip: String of the IP address to connect to.
186			:return: Dictionary of validators that the crawler has found with the status.
187			"""
188			validator_status = {}
189			try:
190			process_peer = True
191			validator_status["ip"] = validator_ip
192			i = Request(api_url="{}://{}:26657".format(self.http_string, validator_ip), timeout=1).get(path='/net_info')
193			except (ValueError, ConnectionError, HTTPError, Timeout) as e:
194			validator_status["validator_status"] = "Unknown - Cannot Connect to Retrieve Validator INFO - {}".format(e)
195			validator_status["connected_nodes"] = []
196			process_peer = False
197
198			if process_peer:
199			connected_nodes = []
200
201			for connected_peer in i["result"]["peers"]:
202			connected_nodes.append({
203			"node_id": connected_peer["node_info"]["id"],
204			"node_ip": connected_peer["remote_ip"],
205			"node_full": "{}@{}".format(connected_peer["node_info"]["id"], connected_peer["remote_ip"])
206			})
207
208			try:
209			s = Request(api_url="{}://{}:26657".format(self.http_string, validator_ip), timeout=1).get(path='/status')
210			except (ValueError, ConnectionError, HTTPError, Timeout) as e:
211			validator_status["validator_status"] = "Unknown - Cannot Connect to Retrieve Status end point - {}".format(e)
212			validator_status["connected_nodes"] = []
213			process_peer = False
214
215			if process_peer:
216			validator_status = self.parse_validator_status(request_json=s, validator_ip=validator_ip)
217			validator_status["validator_status"] = "Active"
218			validator_status["connected_nodes"] = connected_nodes
219
220			return validator_status
221
222			def parse_validator_status(self, request_json: dict, validator_ip: str):
223			"""
224			Function to parse each peer's JSON element and build information about each.
225
226			Execution of this function is as follows::
227
228			parse_validator_status(request_json='/status', validator_ip='54.255.5.46')
229
230			The expected return result for this function is as follows::
231
232			{
233			'moniker': 'spock',
234			'id': 'ca1189045e84d2be5db0a1ed326ce7cd56015f11',
235			'ip': '54.255.5.46',
236			'version': '0.33.7',
237			'network': 'switcheo-tradehub-1',
238			'latest_block_hash': 'DF194D43058D3CD89DD98A7DA28164B239B9693C822A1DB16CCC27FB49CA587B',
239			'latest_block_height': '7995864',
240			'latest_block_time': '2021-02-27T19:51:00.162091183Z',
241			'earliest_block_height': '1',
242			'earliest_block_time': '2020-08-14T07:32:27.856700491Z',
243			'catching_up': False,
244			'validator_address': '7091A72888509B3F3069231081621DC988D63542',
245			'validator_pub_key_type': 'tendermint/PubKeyEd25519',
246			'validator_pub_key': 'epMp0h65WflL7r8tPGQwusVMbCHgy7ucRg8eDlEJPW0=',
247			'validator_voting_power': '0'
248			}
249
250			:param request_json: Dictionary of the return response from the validator status request.
251			:param validator_ip: String of the IP address to connect to.
252			:return: Dictionary of validator information.
253			"""
254			return {
255			"moniker": request_json["result"]["node_info"]["moniker"],
256			"id": request_json["result"]["node_info"]["id"],
257			"ip": validator_ip,
258			"version": request_json["result"]["node_info"]["version"],
259			"network": request_json["result"]["node_info"]["network"],
260			"latest_block_hash": request_json["result"]["sync_info"]["latest_block_hash"],
261			"latest_block_height": request_json["result"]["sync_info"]["latest_block_height"],
262			"latest_block_time": request_json["result"]["sync_info"]["latest_block_time"],
263			"earliest_block_height": request_json["result"]["sync_info"]["earliest_block_height"],
264			"earliest_block_time": request_json["result"]["sync_info"]["earliest_block_time"],
265			"catching_up": request_json["result"]["sync_info"]["catching_up"],
266			"validator_address": request_json["result"]["validator_info"]["address"],
267			"validator_pub_key_type": request_json["result"]["validator_info"]["pub_key"]["type"],
268			"validator_pub_key": request_json["result"]["validator_info"]["pub_key"]["value"],
269			"validator_voting_power": request_json["result"]["validator_info"]["voting_power"]
270			}
271
272			def sentry_status_request(self, uri: bool = False):
273			"""
274			This function is here to ensure the nodes that have open network connections also have their persistence service running.
275			Many times the network connection is open for communication but the persistence service will not be on.
276
277			Execution of this function is as follows::
278
279			sentry_status_request(uri=True)
280
281			:param uri: Bool value for a URI or IP address.
282			"""
283			for active_validator in self.active_validator_list:
284			if uri:
285			try:
286			# Have to check the "/get_status" endpoint because the port could be open and the validator fully synced but have the persistence service inactive, shutdown, stopped, or non-repsonsive.
287			Request(api_url=active_validator, timeout=1).get(path='/get_status')
288			self.active_sentry_api_list.append(active_validator)
289			if self.is_websocket_client:
290			self.websocket_status_check(ip=active_validator)
291			except (ValueError, ConnectionError, HTTPError, Timeout):
292			pass
293			else:
294			# 1318 - Cosmos REST; 5001 - Demex REST; 5002 - Reverse Proxy for Demex and Cosmos REST; Recommended to not use proxy
295			for port in ["5001"]:
296			try:
297			# Have to check the "/get_status" endpoint because the port could be open and the validator fully synced but have the persistence service inactive, shutdown, stopped, or non-repsonsive.
298			Request(api_url="{}://{}:{}".format(self.http_string, active_validator, port), timeout=1).get(path='/get_status')
299			self.active_sentry_api_list.append('{}://{}:{}'.format(self.http_string, active_validator, port))
300			if self.is_websocket_client:
301			self.websocket_status_check(ip=active_validator)
302			except (ValueError, ConnectionError, HTTPError, Timeout):
303			pass
304
305			self.active_sentry_api_list = list(dict.fromkeys(self.active_sentry_api_list))
306			self.active_ws_uri_list = list(dict.fromkeys(self.active_ws_uri_list))
307
308			def websocket_status_check(self, ip: str, port: int = 5000):
309			"""
310			Function to check if the websocket port is open for communication.
311			This is called as part of the sentry check because calling the websocket also requires the persistence service to be available.
312
313			Execution of this function is as follows::
314
315			websocket_status_check(ip='54.255.5.46', port=5000)
316
317			:param ip: String of the IP address to connect to.
318			:param port: Int value for the port to be checked.
319			"""
320			try:
321			s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
322			location = (ip, port)
323			result_of_check = s.connect_ex(location)
324			if result_of_check == 0:
325			self.active_ws_uri_list.append('{}://{}:{}/ws'.format(self.ws_string, ip, port))
326			s.close()
327			except socket.error:
328			pass
329
330			# def update_validators_and_sentries(self):
331			# threading.Timer(5.0, self.update_validators_and_sentries).start()
332			# self.validator_crawler_mp()
333			# self.sentry_status_request()
334			# self.active_sentry_api_ip = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
335
336			def tradehub_get_request(self, path: str, params: dict = None):
337			"""
338			This is a wrapper for the get request function to allow for retrying network calls on different available validators if a request fails.
339
340			Execution of this function is as follows::
341
342			tradehub_get_request(path='/txs')
343
344			:param path: String of the path being used for the network request that is going to be made.
345			:param params: Dict values that will added to the get request.
346			:return: Dictionary of the return request based on the network path sent.
347			"""
348			try:
349			req = Request(api_url=self.active_sentry_uri, timeout=2).get(path=path, params=params)
350			return req
351			except (ValueError, ConnectionError, HTTPError, Timeout):
352			self.active_sentry_api_list.remove(self.active_sentry_uri)
353			if not self.active_sentry_api_list and not self.BYPASS_NETWORK_CRAWLER:
354			self.validator_crawler_mp()
355			self.sentry_status_request()
356			elif not self.active_sentry_api_list and self.BYPASS_NETWORK_CRAWLER:
357			raise ValueError("Provided Sentry API IP addresses are not responding.")
358			self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
359			return self.tradehub_get_request(path=path, params=params)
360
361			def tradehub_post_request(self, path: str, data: dict = None, json_data: dict = None, params: dict = None):
362			"""
363			This is a wrapper for the post request function to allow for retrying network calls on different available validators if a request fails.
364
365			Execution of this function is as follows::
366
367			tradehub_post_request(path='/txs')
368
369			:param path: String of the path being used for the network request that is going to be made.
370			:param data: Dict values that will added to the post request.
371			:param json_data: Dict values that will added to the post request.
372			:param params: Dict values that will added to the post request.
373			:return: Dictionary of the return request based on the network path sent.
374			"""
375			try:
376			req = Request(api_url=self.active_sentry_uri, timeout=2).post(path=path, data=data, json_data=json_data, params=params)
377			return req
378			except (ValueError, ConnectionError, HTTPError, Timeout):
379			self.active_sentry_api_list.remove(self.active_sentry_uri)
380			if not self.active_sentry_api_list and not self.BYPASS_NETWORK_CRAWLER:
381			self.validator_crawler_mp()
382			self.sentry_status_request()
383			elif not self.active_sentry_api_list and self.BYPASS_NETWORK_CRAWLER:
384			raise ValueError("Provided Sentry API IP addresses are not responding.")
385			self.active_sentry_uri = self.active_sentry_api_list[random.randint(a=0, b=len(self.active_sentry_api_list)-1)]
386			return self.tradehub_post_request(path=path, data=data, json_data=json_data, params=params)
387

Mai-Te-Pora / tradehub-python

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