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##
## Copyright (c) 2010-2020 Intel Corporation
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
## http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
##
from __future__ import print_function
from __future__ import division
from builtins import map
from builtins import range
from past.utils import old_div
from builtins import object
import os
import time
import subprocess
import socket
from rapid_log import RapidLog
from rapid_sshclient import SSHClient
class prox_ctrl(object):
def __init__(self, ip, key=None, user=None, password = None):
self._ip = ip
self._key = key
self._user = user
self._password = password
self._proxsock = []
self._sshclient = SSHClient(ip = ip, user = user, password = password,
rsa_private_key = key, timeout = None)
def ip(self):
return self._ip
def test_connection(self):
attempts = 1
RapidLog.debug("Trying to connect to machine \
on %s, attempt: %d" % (self._ip, attempts))
while True:
try:
self.run_cmd('test -e /opt/rapid/system_ready_for_rapid')
break
except RuntimeWarning as ex:
RapidLog.debug("RuntimeWarning %d:\n%s"
% (ex.returncode, ex.output.strip()))
attempts += 1
if attempts > 20:
RapidLog.exception("Failed to connect to instance after %d\
attempts:\n%s" % (attempts, ex))
time.sleep(2)
RapidLog.debug("Trying to connect to machine \
on %s, attempt: %d" % (self._ip, attempts))
RapidLog.debug("Connected to machine on %s" % self._ip)
def connect_socket(self):
attempts = 1
RapidLog.debug("Trying to connect to PROX (just launched) on %s, \
attempt: %d" % (self._ip, attempts))
sock = None
while True:
sock = self.prox_sock()
if sock is not None:
break
attempts += 1
if attempts > 20:
RapidLog.exception("Failed to connect to PROX on %s after %d \
attempts" % (self._ip, attempts))
time.sleep(2)
RapidLog.debug("Trying to connect to PROX (just launched) on %s, \
attempt: %d" % (self._ip, attempts))
RapidLog.info("Connected to PROX on %s" % self._ip)
return sock
def close(self):
for sock in self._proxsock:
sock.quit()
def run_cmd(self, command):
self._sshclient.run_cmd(command)
return self._sshclient.get_output()
def prox_sock(self, port=8474):
"""Connect to the PROX instance on remote system.
Return a prox_sock object on success, None on failure.
"""
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
sock.connect((self._ip, port))
prox = prox_sock(sock)
self._proxsock.append(prox)
return prox
except:
return None
def scp_put(self, src, dst):
self._sshclient.scp_put(src, dst)
def scp_get(self, src, dst):
self._sshclient.scp_get('/home/' + self._user + src, dst)
class prox_sock(object):
def __init__(self, sock):
self._sock = sock
self._rcvd = b''
def __del__(self):
if self._sock is not None:
self._sock.close()
self._sock = None
def start(self, cores):
self._send('start %s' % ','.join(map(str, cores)))
def stop(self, cores):
self._send('stop %s' % ','.join(map(str, cores)))
def speed(self, speed, cores, tasks=[0]):
for core in cores:
for task in tasks:
self._send('speed %s %s %s' % (core, task, speed))
def reset_stats(self):
self._send('reset stats')
def lat_stats(self, cores, tasks=[0]):
result = {}
result['lat_min'] = 999999999
result['lat_max'] = result['lat_avg'] = 0
result['buckets'] = [0] * 128
result['mis_ordered'] = 0
result['extent'] = 0
result['duplicate'] = 0
number_tasks_returning_stats = 0
self._send('lat all stats %s %s' % (','.join(map(str, cores)),
','.join(map(str, tasks))))
for core in cores:
for task in tasks:
stats = self._recv().split(',')
if 'is not measuring' in stats[0]:
continue
if stats[0].startswith('error'):
RapidLog.critical("lat stats error: unexpected reply from PROX\
(potential incompatibility between scripts and PROX)")
raise Exception("lat stats error")
number_tasks_returning_stats += 1
result['lat_min'] = min(int(stats[0]),result['lat_min'])
result['lat_max'] = max(int(stats[1]),result['lat_max'])
result['lat_avg'] += int(stats[2])
#min_since begin = int(stats[3])
#max_since_begin = int(stats[4])
result['lat_tsc'] = int(stats[5])
# Taking the last tsc as the timestamp since
# PROX will return the same tsc for each
# core/task combination
result['lat_hz'] = int(stats[6])
#coreid = int(stats[7])
#taskid = int(stats[8])
result['mis_ordered'] += int(stats[9])
result['extent'] += int(stats[10])
result['duplicate'] += int(stats[11])
stats = self._recv().split(':')
if stats[0].startswith('error'):
RapidLog.critical("lat stats error: unexpected lat bucket \
reply (potential incompatibility between scripts \
and PROX)")
raise Exception("lat bucket reply error")
result['buckets'][0] = int(stats[1])
for i in range(1, 128):
stats = self._recv().split(':')
result['buckets'][i] += int(stats[1])
result['lat_avg'] = old_div(result['lat_avg'],
number_tasks_returning_stats)
self._send('stats latency(0).used')
used = float(self._recv())
self._send('stats latency(0).total')
total = float(self._recv())
result['lat_used'] = old_div(used,total)
return (result)
def irq_stats(self, core, bucket, task=0):
self._send('stats task.core(%s).task(%s).irq(%s)' %
(core, task, bucket))
stats = self._recv().split(',')
return int(stats[0])
def show_irq_buckets(self, core, task=0):
rx = tx = drop = tsc = hz = 0
self._send('show irq buckets %s %s' % (core,task))
buckets = self._recv().split(';')
buckets = buckets[:-1]
return buckets
def core_stats(self, cores, tasks=[0]):
rx = tx = drop = tsc = hz = rx_non_dp = tx_non_dp = tx_fail = 0
self._send('dp core stats %s %s' % (','.join(map(str, cores)),
','.join(map(str, tasks))))
for core in cores:
for task in tasks:
stats = self._recv().split(',')
if stats[0].startswith('error'):
if stats[0].startswith('error: invalid syntax'):
RapidLog.critical("dp core stats error: unexpected \
invalid syntax (potential incompatibility \
between scripts and PROX)")
raise Exception("dp core stats error")
continue
rx += int(stats[0])
tx += int(stats[1])
rx_non_dp += int(stats[2])
tx_non_dp += int(stats[3])
drop += int(stats[4])
tx_fail += int(stats[5])
tsc = int(stats[6])
hz = int(stats[7])
return rx, rx_non_dp, tx, tx_non_dp, drop, tx_fail, tsc, hz
def multi_port_stats(self, ports=[0]):
rx = tx = port_id = tsc = no_mbufs = errors = 0
self._send('multi port stats %s' % (','.join(map(str, ports))))
result = self._recv().split(';')
if result[0].startswith('error'):
RapidLog.critical("multi port stats error: unexpected invalid \
syntax (potential incompatibility between scripts and \
PROX)")
raise Exception("multi port stats error")
for statistics in result:
stats = statistics.split(',')
port_id = int(stats[0])
rx += int(stats[1])
tx += int(stats[2])
no_mbufs += int(stats[3])
errors += int(stats[4])
tsc = int(stats[5])
return rx, tx, no_mbufs, errors, tsc
def set_random(self, cores, task, offset, mask, length):
self._send('set random %s %s %s %s %s' % (','.join(map(str, cores)),
task, offset, mask, length))
def set_size(self, cores, task, pkt_size):
self._send('pkt_size %s %s %s' % (','.join(map(str, cores)), task,
pkt_size))
def set_imix(self, cores, task, imix):
self._send('imix %s %s %s' % (','.join(map(str, cores)), task,
','.join(map(str,imix))))
def set_value(self, cores, task, offset, value, length):
self._send('set value %s %s %s %s %s' % (','.join(map(str, cores)),
task, offset, value, length))
def quit_prox(self):
self._send('quit')
def _send(self, cmd):
"""Append LF and send command to the PROX instance."""
if self._sock is None:
raise RuntimeError("PROX socket closed, cannot send '%s'" % cmd)
try:
self._sock.sendall(cmd.encode() + b'\n')
except ConnectionResetError as e:
RapidLog.error('Pipe reset by Prox instance: traffic too high?')
raise
def _recv(self):
"""Receive response from PROX instance, return it with LF removed."""
if self._sock is None:
raise RuntimeError("PROX socket closed, cannot receive anymore")
try:
pos = self._rcvd.find(b'\n')
while pos == -1:
self._rcvd += self._sock.recv(256)
pos = self._rcvd.find(b'\n')
rsp = self._rcvd[:pos]
self._rcvd = self._rcvd[pos+1:]
except ConnectionResetError as e:
RapidLog.error('Pipe reset by Prox instance: traffic too high?')
raise
return rsp.decode()
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