Source code for labgrid.driver.power.gude8316

import requests

from ..exception import ExecutionError

# This driver implements a power port for Gude EPC-8316 Power Switches.
# These switches differ in their API to the previous switches for
# get-commands (because of a firmware bug).
# Apart from a workaround for this bug and reduced port index limits of
# 8 instead of 24, this implementation works just like
# Driver has been tested with:
# * Gude Expert Power Control 8316 (firmware v1.2.0)

PORT = 80

[docs]def power_set(host, port, index, value): # The gude web-interface uses different pages for the three groups of # switches. The web-interface always uses the 'correct' page to set a # value. But commands for all pages are accepted on all pages. index = int(index) assert 1 <= index <= 8 # access the web interface... value = 1 if value else 0 r = requests.get( "http://{}:{}/ov.html?cmd=1&p={}&s={}".format(host, port, index, value) ) r.raise_for_status()
[docs]def power_get(host, port, index): # The status of the ports is made available via a html <meta>-tag using the # following format: # <meta http-equiv="powerstate" content="Power Port ,0"> # # The index of each port should normally be in there, but isn't, because of # a firmware bug: # <meta http-equiv="powerstate" content="Power Port 1,0"> # # Again the status of all ports is made available on all pages. index = int(index) assert 1 <= index <= 8 # get the contents of the main page r = requests.get("http://{}:{}/ov.html".format(host, port)) r.raise_for_status() for line_no, line in enumerate(r.text.splitlines()): if line_no == index and line.find("content=\"Power Port ") > 0: if line.find(",0") > 0: return False if line.find(",1") > 0: return True raise ExecutionError("failed to parse the port status") # if we got this far, something is wrong with the website raise ExecutionError("failed to find the port")