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Viewing changes to dashboard/views/bootspeed.py

  • Committer: Joe Talbott
  • Date: 2012-09-13 16:33:58 UTC
  • Revision ID: joe.talbott@canonical.com-20120913163358-u95p0q4am1ne5br4
bootspeed - Update to add charts and some prototyping code.

*** NOTE ***
This is not at a finished state.

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dashboard/views/bootspeed.py
 
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import datetime
 
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from django.db import models
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from django.views.decorators.http import (
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        require_GET,
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        require_POST,
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        )
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from django.shortcuts import render_to_response
 
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from django.http import HttpResponse
 
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from django.shortcuts import (
 
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        render_to_response,
 
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        get_object_or_404,
 
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        )
 
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import matplotlib
 
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matplotlib.use('Agg')
 
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from matplotlib.backends.backend_agg import FigureCanvasAgg
 
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from matplotlib.dates import date2num
 
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from pylab import figure, plot, gca, plot_date, bar
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from dashboard.models import (
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        Image,
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            }
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    return render_to_response('bootspeed/overview.html', data)
 
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@require_GET
 
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def image_overview(request, image_id):
 
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    image = get_object_or_404(Image, id=image_id)
 
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    data = {
 
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            'image': image,
 
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            'results': image.imageresult_set.values('ran_at').annotate(
 
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                kernel_init_avg=models.Avg('kernel_init'),
 
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                kernel_init_min=models.Min('kernel_init'),
 
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                kernel_init_max=models.Max('kernel_init'),
 
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                kernel_avg=models.Avg('kernel'),
 
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                kernel_min=models.Min('kernel'),
 
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                kernel_max=models.Max('kernel'),
 
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                plumbing_avg=models.Avg('plumbing'),
 
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                plumbing_min=models.Min('plumbing'),
 
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                plumbing_max=models.Max('plumbing'),
 
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                xorg_avg=models.Avg('xorg'),
 
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                xorg_min=models.Min('xorg'),
 
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                xorg_max=models.Max('xorg'),
 
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                desktop_avg=models.Avg('desktop'),
 
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                desktop_min=models.Min('desktop'),
 
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                desktop_max=models.Max('desktop'),
 
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                boot_avg=models.Avg('boot'),
 
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                boot_min=models.Min('boot'),
 
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                boot_max=models.Max('boot'),
 
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                ),
 
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            }
 
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    return render_to_response('bootspeed/image_overview.html', data)
 
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CHART_WIDTH_DAYS = 60
 
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@require_GET
 
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def build_boot_chart(request, image_id):
 
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    image = Image.objects.get(id=image_id)
 
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    end = datetime.datetime.now()
 
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    start = end - datetime.timedelta(days=CHART_WIDTH_DAYS)
 
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    x_data, avg_data, max_data, min_data, low_error, hi_error = image.get_chart_data(
 
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            start=start,
 
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            end=end,
 
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            )
 
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    f = figure(figsize=(12,9)) # inches
 
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    f.patch.set_alpha(0.0) # transparent background
 
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    #plot_date(date2num(x_data), avg_data, 'b-')
 
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    #plot_date(date2num(x_data), max_data, 'g-')
 
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    #plot_date(date2num(x_data), min_data, 'r-')
 
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    ax = gca()
 
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    ax.bar(x_data, avg_data, color='#dd4814', yerr=[low_error, hi_error], ecolor='b')
 
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    ax.set_title('Bootspeed (sec.)')
 
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    labels = ax.get_xticklabels()
 
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    for label in labels:
 
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        label.set_rotation(90)
 
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        label.set_size('small')
 
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    ax.set_xlim(date2num(start), date2num(end))
 
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    ax.xaxis.set_major_locator(
 
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            matplotlib.dates.DayLocator()
 
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            )
 
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    ax.xaxis.set_major_formatter(
 
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            matplotlib.dates.DateFormatter('%Y%m%d')
 
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            )
 
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    response = HttpResponse(content_type='image/png')
 
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    canvas = FigureCanvasAgg(f)
 
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    canvas.print_png(response, transparent=True)
 
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    matplotlib.pyplot.close(f)
 
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    return response
 
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