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# Copyright (c) 2019 Cisco and/or its affiliates.
# 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.
"""TCP util library.
"""
from resources.libraries.python.PapiExecutor import PapiSocketExecutor
from resources.libraries.python.Constants import Constants
class TCPUtils(object):
"""Implementation of the TCP utilities.
"""
www_root_dir = '{rmt_fw_dir}/{wrk_www}'\
.format(rmt_fw_dir=Constants.REMOTE_FW_DIR,
wrk_www=Constants.RESOURCES_TP_WRK_WWW)
def __init__(self):
pass
@classmethod
def start_vpp_http_server_params(cls, node, http_static_plugin,
prealloc_fifos, fifo_size,
private_segment_size):
"""Start the test HTTP server internal application or
the HTTP static server plugin internal applicatoin on the given node.
http static server www-root <www-root-dir> prealloc-fifos <N>
fifo-size <size in kB>
private-segment-size <seg_size expressed as number + unit, e.g. 100m>
-- or --
test http server static prealloc-fifos <N> fifo-size <size in kB>
private-segment-size <seg_size expressed as number + unit, e.g. 100m>
Where N is the max number of connections you expect to handle at one
time and <size> should be small if you test for CPS and exchange few
bytes, say 4, if each connection just exchanges few packets. Or it
should be much larger, up to 1024/4096 (i.e. 1-4MB) if you have only
one connection and exchange a lot of packets, i.e., when you test for
RPS. If you need to allocate lots of FIFOs, so you test for CPS, make
private-segment-size something like 4g.
Example:
For CPS
http static server www-root <www-root-dir> prealloc-fifos 10000
fifo-size 64 private-segment-size 4000m
For RPS
test http server static prealloc-fifos 500000 fifo-size 4
private-segment-size 4000m
:param node: Node to start HTTP server on.
:param http_static_plugin: Run HTTP static server plugin
:param prealloc_fifos: Max number of connections you expect to handle at
one time.
:param fifo_size: FIFO size in kB.
:param private_segment_size: Private segment size. Number + unit.
:type node: dict
:type http_static_plugin: boolean
:type prealloc_fifos: str
:type fifo_size: str
:type private_segment_size: str
"""
if http_static_plugin:
cmd = 'http static server www-root {www_root} '\
'prealloc-fifos {prealloc_fifos} fifo-size {fifo_size}'\
' private-segment-size {pvt_seg_size}'\
.format(www_root=cls.www_root_dir,
prealloc_fifos=prealloc_fifos, fifo_size=fifo_size,
pvt_seg_size=private_segment_size)
else:
cmd = 'test http server static prealloc-fifos {prealloc_fifos} '\
'fifo-size {fifo_size} private-segment-size {pvt_seg_size}'\
.format(prealloc_fifos=prealloc_fifos, fifo_size=fifo_size,
pvt_seg_size=private_segment_size)
PapiSocketExecutor.run_cli_cmd(node, cmd)
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