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bc9a498683
Some processes (e.g. nodefirmware update) warrant a different sort of strategy to try to abbreviate, where collation falls short. For this, provide a columnar output that changes to line by line if stdout is not a terminal.
86 lines
2.7 KiB
Python
86 lines
2.7 KiB
Python
# Copyright 2017 Lenovo
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import fcntl
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import sys
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import struct
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import termios
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def get_screenwidth():
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return struct.unpack('hh', fcntl.ioctl(sys.stdout, termios.TIOCGWINSZ,
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b'....'))[1]
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class ScreenPrinter(object):
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def __init__(self, noderange, client, textlen=4):
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self.squeeze = sys.stdout.isatty()
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self.textlen = textlen
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self.noderange = noderange
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self.client = client
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self.nodeoutput = {}
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self.nodelist = []
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maxlen = 0
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for ans in self.client.read('/noderange/{0}/nodes/'.format(noderange)):
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if 'error' in ans:
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sys.stderr.write(ans['error'])
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continue
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nodename = ans['item']['href'][:-1]
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if len(nodename) > maxlen:
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maxlen = len(nodename)
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self.nodelist.append(nodename)
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self.nodeoutput[nodename] = ''
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self.nodenamelen = maxlen
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self.textlen = textlen
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self.fieldwidth = maxlen + textlen + 1 # 1 for column
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def set_output(self, node, text):
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self.nodeoutput[node] = text
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if len(text) >= self.textlen:
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self.textlen = len(text) + 1
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self.fieldwidth = self.textlen + self.nodenamelen + 1
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self.drawscreen()
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def drawscreen(self):
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if self.squeeze:
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currwidth = get_screenwidth()
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numfields = currwidth // self.fieldwidth
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fieldformat = '{{0:>{0}}}:{{1:{1}}}'.format(self.nodenamelen,
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self.textlen)
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sys.stdout.write('\x1b[2J\x1b[;H') # clear screen
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else:
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numfields = 1
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fieldformat = '{0}: {1}'
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currfields = 0
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for node in self.nodelist:
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if currfields >= numfields:
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sys.stdout.write('\n')
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currfields = 1
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else:
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currfields += 1
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sys.stdout.write(fieldformat.format(node, self.nodeoutput[node]))
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sys.stdout.write('\n')
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sys.stdout.flush()
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if __name__ == '__main__':
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import confluent.client as client
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c = client.Command()
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p = ScreenPrinter('n1-n13', c)
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p.set_output('n3', 'Upload: 67%')
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