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[celestica] consutil to support customize tty device name #1155

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merged 4 commits into from
Oct 13, 2020
Merged

[celestica] consutil to support customize tty device name #1155

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bcc1a4f
Update lib.py
sandycelestica Oct 9, 2020
8aac0b8
Update lib.py
sandycelestica Oct 10, 2020
4206550
Update lib.py
sandycelestica Oct 10, 2020
1426c13
Update lib.py
sandycelestica Oct 12, 2020
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21 changes: 20 additions & 1 deletion consutil/lib.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
import re
import subprocess
import sys
import os
from swsssdk import ConfigDBConnector
except ImportError as e:
raise ImportError("%s - required module not found" % str(e))
Expand All @@ -27,6 +28,11 @@
FLOW_KEY = "flow_control"
DEFAULT_BAUD = "9600"

PREV_REBOOT_CAUSE="/host/reboot-cause/"
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DEVICE="/usr/share/sonic/device"
PLATFORM='/usr/local/bin/sonic-cfggen -H -v DEVICE_METADATA.localhost.platform'
FILENAME="udevprefix.conf"

# QUIET == True => picocom will not output any messages, and pexpect will wait for console
# switch login or command line to let user interact with shell
# Downside: if console switch output ever does not match DEV_READY_MSG, program will think connection failed
Expand All @@ -37,6 +43,19 @@
DEV_READY_MSG = r"([Ll]ogin:|[Pp]assword:|[$>#])" # login prompt or command line prompt
TIMEOUT_SEC = 0.2


proc = subprocess.Popen(PLATFORM,stdout=subprocess.PIPE,shell=True,stderr=subprocess.STDOUT)
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stdout = proc.communicate()[0]
proc.wait()
platform = stdout.rstrip('\n')
PLUGIN_PATH="/".join([DEVICE,platform,"plugins","udevprefix.conf"])
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if os.path.exists(PLUGIN_PATH):
fp = open(PLUGIN_PATH,'r')
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line=fp.readlines()
DEVICE_PREFIX="/dev/"+line[0]


# runs command, exit if stderr is written to, returns stdout otherwise
# input: cmd (str), output: output of cmd (str)
def run_command(cmd):
Expand Down Expand Up @@ -119,4 +138,4 @@ def getLine(target, deviceBool=False):
lineNumber = line[LINE_KEY]
targetLine = line

return targetLine if lineNumber else None
return targetLine if lineNumber else None