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#!/usr/bin/env python
#
# ntpshmviz - graph the drift of NTP servers
# Written by Keane Wolter <daemoneye2@gmail.com>
#
# pystripchart can be found at
# https://sourceforge.net/projects/jstripchart
#
# To do:
#
# 1. Exaggerate vertical scale so data spans about 3/4ths of graph height
# and we can actually see features.
# 2. Try using an impulse rather than line plut - this is bursty noise, not
# really a contour.
# 3. Exit button - WM might be a tiler like i3.
#
import array, gtk, stripchart, sys
class ntpOffset:
def __init__(self, stream):
# Initialize the class
# get the data
self.read_data(stream)
# create the GUI for the application
self.create_GUI()
# enter the GTK main loop
gtk.main()
def create_GUI(self):
# Creates the gui for the class
# create a standard top-level GTK window
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_title("NTP Offset")
self.window.connect("destroy", gtk.mainquit)
self.window.set_default_size(700, 400)
self.window.show()
# create a VBox to hold all the top-level GUI items
self.vbox = gtk.VBox()
self.vbox.show()
self.window.add(self.vbox)
# create the StripTableau and add the data to it
self.create_StripTableau()
# create the toolbar
self.create_toolbar()
def create_StripTableau(self):
# create the striptable widget
# gtk adjustment (value, lower, upper, step_incr, page_incr, page_size)
hadj = gtk.Adjustment(0, 0, 1, 1, 1, self.lines)
sel = gtk.Adjustment(-1)
self.striptableau = stripchart.StripTableau(hadj, sel)
self.striptableau.metawidth = 120
self.striptableau.gradewidth = 100
self.vbox.pack_end(self.striptableau.widget, gtk.TRUE, gtk.TRUE)
# Add the channel for NTP2
# adjust the size of the graph for NTP2 to allow all the data
# to fit within the graph
vadj_ntp2 = gtk.Adjustment(self.ntp2_lower, self.ntp2_lower-0.1, self.ntp2_upper+0.1, 0.1, 0, self.ntp2_upper+0.1)
ntp2_item = self.striptableau.addChannel(self.ntp2, vadj_ntp2)
ntp2_item.name = "NTP2"
ntp2_item.meta = self.create_text("NTP2 Offset Values")
# add the channel for NTP3
# adjust the size of the graph for NTP2 to allow all the data
# to fit within the graph
vadj_ntp3 = gtk.Adjustment(self.ntp3_lower-0.1, self.ntp3_lower-0.1, self.ntp3_upper+0.1, 0.1, 0, self.ntp3_upper+0.1)
ntp3_item = self.striptableau.addChannel(self.ntp3, vadj_ntp3)
ntp3_item.name = "NTP3"
ntp3_item.meta = self.create_text("NTP3 Offset Values")
def create_text(self, text):
# Creates a text widget to contain a description of a channel.
scrolled_window = gtk.ScrolledWindow()
scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
scrolled_window.set_shadow_type(gtk.SHADOW_IN)
textview = gtk.TextView()
buffer = gtk.TextBuffer()
iter = buffer.get_iter_at_offset(0)
buffer.insert(iter, text)
textview.set_buffer(buffer)
textview.set_editable(gtk.TRUE)
textview.set_cursor_visible(gtk.TRUE)
textview.set_wrap_mode(gtk.WRAP_WORD)
textview.set_left_margin(5)
textview.set_right_margin(5)
textview.set_pixels_above_lines(5)
textview.set_pixels_below_lines(5)
scrolled_window.add(textview)
scrolled_window.show()
return scrolled_window
def create_toolbar(self):
# Create the toolbar
self.toolbar = gtk.Toolbar()
self.toolbar.show()
# add buttons for zoom and wire them to the StripTableau widget
self.toolbar.insert_stock(gtk.STOCK_ZOOM_IN, "Zoom in", None,
lambda b, w: self.striptableau.zoomIn(), self.window, -1)
self.toolbar.insert_stock(gtk.STOCK_ZOOM_OUT, "Zoom out", None,
lambda b, w: self.striptableau.zoomOut(), self.window, -1)
self.toolbar.insert_stock(gtk.STOCK_ZOOM_FIT, "Zoom fit", None,
lambda b, w: self.striptableau.zoomSel(), self.window, -1)
# sit the toolbar inside a HandleBox so that it can be detacjed
self.handlebox = gtk.HandleBox()
self.handlebox.show()
self.handlebox.add(self.toolbar)
# pack the toolbar into the main window
self.vbox.pack_start(self.handlebox, gtk.FALSE)
def get_offset(self, data):
# get the difference between the clock time and receiver time of day
return (float(data.split(' ')[3]) - float(data.split(' ')[4]))
def read_data(self, stream):
# Reads data from a ntp log file. Layout is:
#
# - The keyword "sample"
# - The NTP unit from which it was collected.
# - Collection time of day, expressed in seconds
# - Receiver time of day, expressed in seconds
# - Clock time of day, expressed in seconds
# - Leep-second notification status
# - Source precision (log(2) of source jitter)
self.ntp2 = array.array("d") # ntp2 array
self.ntp3 = array.array("d") # ntp3 array
self.lines = 0 # width of graph - set to the size of the largest array
self.ntp2_upper = 0 # highest value in ntp2 array
self.ntp2_lower = 0 # lowest value in ntp2 array
self.ntp3_upper = 0 # highest value in ntp3 array
self.ntp3_lower = 0 # lowest value in ntp3 array
offset = 0 # offset value to add to the array and to check the upper and lower bounds of the graph
for line in stream:
if len(line.split(' ')) > 6:
if 'NTP2' in line:
offset = self.get_offset(line)
self.ntp2.append(offset)
if offset > self.ntp2_upper:
self.ntp2_upper = round(offset, 5)
if offset < self.ntp2_lower:
self.ntp2_lower = round(offset, 5)
if 'NTP3' in line:
offset = self.get_offset(line)
self.ntp3.append(offset)
if offset > self.ntp3_upper:
self.ntp3_upper = round(offset, 5)
if offset < self.ntp3_lower:
self.ntp3_lower = round(offset, 5)
stream.close()
# Get the line count for the larger of the two arrays.
# This will set the width of the graph when it is displayed.
if len(self.ntp2) > len(self.ntp3):
self.lines = len(self.ntp2)
else:
self.lines = len(self.ntp3)
# Run the class
if __name__ == "__main__":
# instantiate the application
ntpOffset(sys.stdin)
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