|
| 1 | +import asyncio |
| 2 | +import logging |
| 3 | +import sys |
| 4 | +import time |
| 5 | +from typing import Optional, Dict, Any |
| 6 | + |
| 7 | +import aiohttp |
| 8 | +import backoff |
| 9 | + |
| 10 | + |
| 11 | +class RateLimitError(Exception): |
| 12 | + pass |
| 13 | + |
| 14 | + |
| 15 | +class AsyncAPI: |
| 16 | + def __init__( |
| 17 | + self, |
| 18 | + token: str, |
| 19 | + api_url: str = "https://api.tinybird.co", |
| 20 | + version: str = "v0", |
| 21 | + retry_total: int = 1, |
| 22 | + ): |
| 23 | + self.api_url = api_url.rstrip("/") |
| 24 | + self.version = version |
| 25 | + TOKEN_ERROR = f"Token must be a valid Tinybird token for {self.api_url}. Check the `api_url` param is correct and the token has the right permissions. {self.ui_url()}/tokens" |
| 26 | + if not token: |
| 27 | + logging.critical(TOKEN_ERROR) |
| 28 | + sys.exit(-1) |
| 29 | + self.token = token |
| 30 | + self._session: Optional[aiohttp.ClientSession] = None |
| 31 | + |
| 32 | + self.rate_limit_points = 6 |
| 33 | + self.rate_limit_remaining = self.rate_limit_points |
| 34 | + self.rate_limit_reset = 0 |
| 35 | + self.retry_after = 1 |
| 36 | + self.retry_total = retry_total |
| 37 | + |
| 38 | + self.token_error = TOKEN_ERROR |
| 39 | + |
| 40 | + def ui_url(self) -> str: |
| 41 | + return self.api_url.replace("api", "ui") |
| 42 | + |
| 43 | + async def _get_session(self) -> aiohttp.ClientSession: |
| 44 | + """Get or create an aiohttp session.""" |
| 45 | + if self._session is None or self._session.closed: |
| 46 | + timeout = aiohttp.ClientTimeout(total=60) |
| 47 | + self._session = aiohttp.ClientSession(timeout=timeout) |
| 48 | + return self._session |
| 49 | + |
| 50 | + async def close(self) -> None: |
| 51 | + """Close the aiohttp session.""" |
| 52 | + if self._session and not self._session.closed: |
| 53 | + await self._session.close() |
| 54 | + |
| 55 | + async def __aenter__(self): |
| 56 | + """Support for async context manager.""" |
| 57 | + return self |
| 58 | + |
| 59 | + async def __aexit__(self, exc_type, exc_val, exc_tb): |
| 60 | + """Support for async context manager.""" |
| 61 | + await self.close() |
| 62 | + |
| 63 | + async def _handle_rate_limit(self) -> None: |
| 64 | + """Handle rate limiting by waiting if necessary.""" |
| 65 | + if self.rate_limit_remaining == 0: |
| 66 | + time_to_sleep = min((self.rate_limit_reset - time.time()), 10) |
| 67 | + time_to_sleep = max(time_to_sleep, 1) + 1 |
| 68 | + logging.info(f"Waiting {str(time_to_sleep)} seconds before retrying...") |
| 69 | + await asyncio.sleep(time_to_sleep) |
| 70 | + logging.info("Retrying") |
| 71 | + |
| 72 | + def _set_rate_limit(self, response: aiohttp.ClientResponse) -> None: |
| 73 | + """Update rate limit information from response headers.""" |
| 74 | + headers = response.headers |
| 75 | + if "X-Ratelimit-Limit" in headers: |
| 76 | + self.rate_limit_points = int(headers.get("X-Ratelimit-Limit")) |
| 77 | + self.rate_limit_remaining = int(headers.get("X-Ratelimit-Remaining")) |
| 78 | + self.rate_limit_reset = int(headers.get("X-Ratelimit-Reset")) |
| 79 | + self.retry_after = int(headers.get("Retry-After", "0")) |
| 80 | + |
| 81 | + async def send(self, path: str, method: str = "POST", **kwargs): |
| 82 | + @backoff.on_exception( |
| 83 | + backoff.expo, (RateLimitError,), max_tries=self.retry_total |
| 84 | + ) |
| 85 | + async def _send(): |
| 86 | + session = await self._get_session() |
| 87 | + headers = {"Authorization": f"Bearer {self.token}"} |
| 88 | + |
| 89 | + if "headers" in kwargs: |
| 90 | + kwargs["headers"].update(headers) |
| 91 | + else: |
| 92 | + kwargs["headers"] = headers |
| 93 | + |
| 94 | + url = f"{self.api_url}/{self.version}/{path.lstrip('/')}" |
| 95 | + |
| 96 | + while True: |
| 97 | + if method == "POST": |
| 98 | + response = await session.post(url, **kwargs) |
| 99 | + elif method == "DELETE": |
| 100 | + response = await session.delete(url, **kwargs) |
| 101 | + else: |
| 102 | + response = await session.get(url, **kwargs) |
| 103 | + |
| 104 | + self._set_rate_limit(response) |
| 105 | + |
| 106 | + if response.status == 429: |
| 107 | + logging.warning( |
| 108 | + f"Too many requests, you can do {self.rate_limit_points} requests per minute..." |
| 109 | + ) |
| 110 | + raise RateLimitError() |
| 111 | + else: |
| 112 | + break |
| 113 | + |
| 114 | + if response.status == 403: |
| 115 | + logging.error(self.token_error) |
| 116 | + |
| 117 | + response.raise_for_status() |
| 118 | + return response |
| 119 | + |
| 120 | + return await _send() |
| 121 | + |
| 122 | + async def post(self, path: str, **kwargs) -> aiohttp.ClientResponse: |
| 123 | + """Send a POST request to the Tinybird API.""" |
| 124 | + return await self.send(path, method="POST", **kwargs) |
| 125 | + |
| 126 | + async def get(self, path: str, **kwargs) -> aiohttp.ClientResponse: |
| 127 | + """Send a GET request to the Tinybird API.""" |
| 128 | + return await self.send(path, method="GET", **kwargs) |
| 129 | + |
| 130 | + async def delete(self, path: str, **kwargs) -> aiohttp.ClientResponse: |
| 131 | + """Send a DELETE request to the Tinybird API.""" |
| 132 | + return await self.send(path, method="DELETE", **kwargs) |
| 133 | + |
| 134 | + async def get_json(self, path: str, **kwargs) -> Dict[str, Any]: |
| 135 | + """Send a GET request and return the JSON response.""" |
| 136 | + response = await self.get(path, **kwargs) |
| 137 | + return await response.json() |
| 138 | + |
| 139 | + async def post_json(self, path: str, **kwargs) -> Dict[str, Any]: |
| 140 | + """Send a POST request and return the JSON response.""" |
| 141 | + response = await self.post(path, **kwargs) |
| 142 | + return await response.json() |
| 143 | + |
| 144 | + async def initialize(self) -> None: |
| 145 | + """Initialize the API by checking the token validity.""" |
| 146 | + try: |
| 147 | + await self.get("/datasources") |
| 148 | + except aiohttp.ClientResponseError as e: |
| 149 | + if e.status == 403: |
| 150 | + logging.error(self.token_error) |
| 151 | + sys.exit(-1) |
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