initial

utils/platform.py

@@ -0,0 +1,93 @@
+import json
+import os
+import typing
+import urllib.parse
+from threading import Thread
+from time import sleep
+
+from requests import get
+
+
+class PlatformClient:
+    def __init__(self, app_name: str, stage: str, need_poll: bool = True):
+        self.app_name = app_name
+        self.stage = stage
+        self.endpoint = 'http://configurator/'
+        self.fetch_url = urllib.parse.urljoin(self.endpoint, '/api/v1/fetch')
+        self.config_storage = {}
+        self.experiment_storage = {}
+        self.staff_storage = {}
+        self.poll_data()
+        if need_poll:
+            self.poll_data_in_thread()
+
+    def poll_data_in_thread(self):
+        def inner():
+            while True:
+                sleep(30)
+                self.fetch()
+
+        Thread(target=inner, daemon=True).start()
+
+    def poll_data(self):
+        self.fetch(with_exception=True)
+
+    def request_with_retries(self, url: str, params: dict, with_exception=False, retries_count=3):
+        exception_to_throw = None
+        for _ in range(retries_count):
+            try:
+                response = get(
+                    url,
+                    params=params
+                )
+                if response.status_code == 200:
+                    return response.json()
+                print(f'Failed to request {url}, status_code={response.status_code}')
+                exception_to_throw = Exception('Not 200 status')
+            except Exception as exc:
+                print(exc)
+                exception_to_throw = exc
+            sleep(1)
+        print(f'Failed fetching with retries: {url}, {params}')
+        if with_exception:
+            raise exception_to_throw
+
+    def fetch(self, with_exception=False):
+        if self.stage == 'local':
+            local_platform = json.loads(open('local_platform.json', 'r').read())
+            self.config_storage = local_platform['configs']
+            self.experiment_storage = local_platform['experiments']
+            self.staff_storage = {
+                key: set(value)
+                for key, value in local_platform['platform_staff'].items()
+            }
+            return
+        response_data = self.request_with_retries(self.fetch_url, {
+            'project': self.app_name,
+            'stage': self.stage,
+        }, with_exception)
+        self.config_storage = response_data['configs']
+        self.experiment_storage = response_data['experiments']
+        self.staff_storage = {
+            key: set(value)
+            for key, value in response_data['platform_staff'].items()
+        }
+
+    def is_staff(self, **kwargs):
+        for key, value in kwargs.items():
+            if value in self.staff_storage[key]:
+                return True
+        return False
+
+    def get_config(self, name: str) -> dict:
+        return self.config_storage[name]
+
+    def get_experiment(self, name: str) -> dict:
+        return self.experiment_storage[name]
+
+
+platform_client = PlatformClient(
+    'Botalka',
+    os.getenv('STAGE'),
+    need_poll=True,
+)

utils/queues.py

@@ -0,0 +1,52 @@
+import os
+import requests
+import time
+
+
+stage = os.getenv("STAGE", 'local')
+if stage == 'local':
+    QUEUES_URL = 'http://localhost:1239'
+else:
+    QUEUES_URL = 'http://queues:1239'
+
+
+class QueuesException(Exception):
+    ...
+
+
+class TasksHandlerMixin:
+    def poll(self):
+        while True:
+            response = requests.get(f'{QUEUES_URL}/api/v1/take', headers={'queue': self.queue_name}).json()
+            task = response.get('task')
+            if not task:
+                time.sleep(0.2)
+                continue
+            try:
+                self.process(task['payload'])
+            except Exception as exc:
+                print(f'Error processing message id={task["id"]}, payload={task["payload"]}, exc={exc}')
+                continue
+            try:
+                resp = requests.post(f'{QUEUES_URL}/api/v1/finish', json={'id': task['id']})
+                if resp.status_code != 202:
+                    raise QueuesException
+            except:
+                print(f'Failed to finish task id={task["id"]}')
+
+    @property
+    def queue_name(self):
+        raise NotImplemented
+
+    def process(self, payload):
+        raise NotImplemented
+
+
+def set_task(queue_name: str, payload: dict, seconds_to_execute: int, delay: int|None = None):
+    resp = requests.post(f'{QUEUES_URL}/api/v1/put', headers={'queue': queue_name}, json={
+        'payload': payload,
+        'seconds_to_execute': seconds_to_execute,
+        'delay': delay,
+    })
+    if resp.status_code != 202:
+        raise QueuesException