mirror of https://github.com/m-labs/artiq.git
244 lines
8.0 KiB
Python
Executable File
244 lines
8.0 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse
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import logging
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import asyncio
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import atexit
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import fnmatch
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from functools import partial
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import time
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import numpy as np
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import aiohttp
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from artiq.tools import *
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from artiq.protocols.sync_struct import Subscriber
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from artiq.protocols.pc_rpc import Server
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from artiq.protocols import pyon
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logger = logging.getLogger(__name__)
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def get_argparser():
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parser = argparse.ArgumentParser(
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description="ARTIQ data to InfluxDB bridge",
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epilog="Pattern matching works as follows. "
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"The default action on a key (dataset name) is to log it. "
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"Then the patterns are traversed in order and glob-matched "
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"with the key. "
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"Optional + and - pattern prefixes specify whether to ignore or "
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"log keys matching the rest of the pattern. "
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"Default (in the absence of prefix) is to ignore. Last matched "
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"pattern takes precedence.")
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group = parser.add_argument_group("master")
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group.add_argument(
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"--server-master", default="::1",
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help="hostname or IP of the master to connect to")
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group.add_argument(
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"--port-master", default=3250, type=int,
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help="TCP port to use to connect to the master")
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group.add_argument(
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"--retry-master", default=5.0, type=float,
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help="retry timer for reconnecting to master")
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group = parser.add_argument_group("database")
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group.add_argument(
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"--baseurl-db", default="http://localhost:8086",
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help="base URL to access InfluxDB (default: %(default)s)")
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group.add_argument(
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"--user-db", default="", help="InfluxDB username")
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group.add_argument(
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"--password-db", default="", help="InfluxDB password")
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group.add_argument(
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"--database", default="db", help="database name to use")
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group.add_argument(
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"--table", default="lab", help="table name to use")
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group = parser.add_argument_group("filter")
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group.add_argument(
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"--pattern-file", default="influxdb_patterns.cfg",
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help="file to load the patterns from (default: %(default)s). "
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"If the file is not found, no patterns are loaded "
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"(everything is logged).")
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simple_network_args(parser, [("control", "control", 3248)])
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verbosity_args(parser)
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return parser
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def format_influxdb(v):
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if np.issubdtype(type(v), np.bool_):
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return "bool={}".format(v)
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if np.issubdtype(type(v), np.integer):
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return "int={}i".format(v)
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if np.issubdtype(type(v), np.floating):
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return "float={}".format(v)
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if np.issubdtype(type(v), np.str_):
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return "str=\"{}\"".format(v.replace('"', '\\"'))
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return "pyon=\"{}\"".format(pyon.encode(v).replace('"', '\\"'))
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class DBWriter(TaskObject):
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def __init__(self, base_url, user, password, database, table):
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self.base_url = base_url
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self.user = user
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self.password = password
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self.database = database
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self.table = table
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self._queue = asyncio.Queue(100)
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def update(self, k, v):
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try:
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self._queue.put_nowait((k, v, time.time()))
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except asyncio.QueueFull:
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logger.warning("failed to update dataset '%s': "
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"too many pending updates", k)
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async def _do(self):
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async with aiohttp.ClientSession() as session:
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while True:
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k, v, t = await self._queue.get()
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url = self.base_url + "/write"
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params = {"u": self.user, "p": self.password, "db": self.database,
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"precision": "ms"}
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data = "{},dataset={} {} {}".format(
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self.table, k, format_influxdb(v), round(t*1e3))
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try:
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response = await session.post(url, params=params, data=data)
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except:
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logger.warning("got exception trying to update '%s'",
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k, exc_info=True)
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else:
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if response.status not in (200, 204):
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content = (await response.content.read()).decode().strip()
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logger.warning("got HTTP status %d "
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"trying to update '%s': %s",
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response.status, k, content)
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response.close()
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class _Mock:
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def __setitem__(self, k, v):
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pass
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def __getitem__(self, k):
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return self
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def __delitem__(self, k):
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pass
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class Datasets:
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def __init__(self, filter_function, writer, init):
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self.filter_function = filter_function
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self.writer = writer
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def __setitem__(self, k, v):
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if self.filter_function(k):
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self.writer.update(k, v[1])
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# ignore mutations
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def __getitem__(self, k):
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return _Mock()
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# ignore deletions
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def __delitem__(self, k):
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pass
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class MasterReader(TaskObject):
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def __init__(self, server, port, retry, filter_function, writer):
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self.server = server
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self.port = port
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self.retry = retry
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self.filter_function = filter_function
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self.writer = writer
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async def _do(self):
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subscriber = Subscriber(
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"datasets",
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partial(Datasets, self.filter_function, self.writer))
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while True:
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try:
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await subscriber.connect(self.server, self.port)
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try:
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await asyncio.wait_for(subscriber.receive_task, None)
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finally:
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await subscriber.close()
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except (ConnectionAbortedError, ConnectionError,
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ConnectionRefusedError, ConnectionResetError) as e:
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logger.warning("Connection to master failed (%s: %s)",
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e.__class__.__name__, str(e))
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else:
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logger.warning("Connection to master lost")
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logger.warning("Retrying in %.1f seconds", self.retry)
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await asyncio.sleep(self.retry)
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class Filter:
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def __init__(self, pattern_file):
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self.pattern_file = pattern_file
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self.scan_patterns()
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def scan_patterns(self):
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"""(Re)load the patterns file."""
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try:
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with open(self.pattern_file, "r") as f:
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self.patterns = []
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for line in f:
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line = line.rstrip()
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if line:
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self.patterns.append(line)
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except FileNotFoundError:
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logger.info("no pattern file found, logging everything")
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self.patterns = []
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# Privatize so that it is not shown in artiq_rpctool list-methods.
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def _filter(self, k):
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take = "+"
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for pattern in self.patterns:
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sign = "-"
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if pattern[0] in "+-":
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sign, pattern = pattern[0], pattern[1:]
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if fnmatch.fnmatchcase(k, pattern):
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take = sign
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return take == "+"
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def get_patterns(self):
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"""Show existing patterns."""
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return self.patterns
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def ping(self):
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return True
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def main():
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args = get_argparser().parse_args()
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init_logger(args)
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loop = asyncio.get_event_loop()
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atexit.register(loop.close)
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writer = DBWriter(args.baseurl_db,
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args.user_db, args.password_db,
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args.database, args.table)
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writer.start()
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atexit_register_coroutine(writer.stop)
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filter = Filter(args.pattern_file)
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rpc_server = Server({"influxdb_filter": filter}, builtin_terminate=True)
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loop.run_until_complete(rpc_server.start(bind_address_from_args(args),
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args.port_control))
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atexit_register_coroutine(rpc_server.stop)
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reader = MasterReader(args.server_master, args.port_master,
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args.retry_master, filter._filter, writer)
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reader.start()
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atexit_register_coroutine(reader.stop)
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loop.run_until_complete(rpc_server.wait_terminate())
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if __name__ == "__main__":
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main()
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