Revision 592bfc3b snf-stats-app/synnefo_stats/grapher.py
b/snf-stats-app/synnefo_stats/grapher.py | ||
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# or implied, of GRNET S.A. |
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from django.http import HttpResponse |
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from django.views.decorators.http import require_http_methods |
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import gd |
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import os |
... | ... | |
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from cgi import escape |
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from cStringIO import StringIO |
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#from flup.server.fcgi import WSGIServer |
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import rrdtool |
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from synnefo_stats import settings |
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class InternalError(Exception): |
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pass |
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from synnefo.util.text import uenc |
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from snf_django.lib.api import faults, api_method |
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from logging import getLogger |
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log = getLogger(__name__) |
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class NotFound(Exception): |
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pass |
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def read_file(filepath): |
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try: |
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f = open(filepath, "r") |
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except EnvironmentError, e: |
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raise InternalError(str(e)) |
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f = open(filepath, "r") |
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try: |
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data = f.read() |
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except EnvironmentError, e: |
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raise InternalError(str(e)) |
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finally: |
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f.close() |
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return data |
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def draw_cpu_bar(hostname):
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), "cpu", "virt_cpu_total.rrd")
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def draw_cpu_bar(fname, outfname=None):
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fname = os.path.join(fname, "cpu", "virt_cpu_total.rrd")
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try: |
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values = rrdtool.fetch(fname, "AVERAGE")[2][-20:] |
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except rrdtool.error, e: |
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#raise InternalError(str(e)) |
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values = [(0.0, )] |
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v = [x[0] for x in values if x[0] is not None] |
... | ... | |
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else: |
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line_color = image.colorAllocate((0x00, 0xa1, 0x00)) |
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image.rectangle((0,0), (settings.WIDTH-1, settings.HEIGHT-1), border_color, background_color) |
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image.rectangle((1,1), (int(value/100.0 * (settings.WIDTH - 2)), settings.HEIGHT - 2), line_color, line_color) |
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image.string_ttf(settings.FONT, 8.0, 0.0, (settings.WIDTH + 1, settings.HEIGHT - 1), "CPU: %.1f%%" % value, white) |
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image.rectangle((0, 0), |
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(settings.WIDTH - 1, settings.HEIGHT - 1), |
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border_color, background_color) |
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image.rectangle((1, 1), |
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(int(value / 100.0 * (settings.WIDTH - 2)), |
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settings.HEIGHT - 2), |
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line_color, line_color) |
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image.string_ttf(settings.FONT, 8.0, 0.0, |
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(settings.WIDTH + 1, settings.HEIGHT - 1), |
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"CPU: %.1f%%" % value, white) |
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io = StringIO() |
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image.writePng(io) |
... | ... | |
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return data |
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def draw_net_bar(hostname): |
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), |
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"interface", "if_octets-eth0.rrd") |
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def draw_net_bar(fname, outfname=None): |
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fname = os.path.join(fname, "interface", "if_octets-eth0.rrd") |
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try: |
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values = rrdtool.fetch(fname, "AVERAGE")[2][-20:] |
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except rrdtool.error, e: |
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#raise InternalError(str(e)) |
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values = [(0.0, 0.0)] |
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v = [x for x in values if x[0] is not None and x[1] is not None] |
... | ... | |
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rx_value, tx_value = v[-1] |
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# Convert to bits |
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rx_value = rx_value * 8 / 10**6
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tx_value = tx_value * 8 / 10**6
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rx_value = rx_value * 8 / 10 ** 6
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tx_value = tx_value * 8 / 10 ** 6
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max_value = (int(max(rx_value, tx_value)/50) + 1) * 50.0
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max_value = (int(max(rx_value, tx_value) / 50) + 1) * 50.0
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image = gd.image((settings.IMAGE_WIDTH, settings.HEIGHT)) |
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... | ... | |
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tx_line_color = image.colorAllocate((0x00, 0xa1, 0x00)) |
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rx_line_color = image.colorAllocate((0x00, 0x00, 0xa1)) |
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image.rectangle((0,0), (settings.WIDTH-1, settings.HEIGHT-1), border_color, background_color) |
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image.rectangle((1,1), (int(tx_value/max_value * (settings.WIDTH-2)), settings.HEIGHT/2 - 1), tx_line_color, tx_line_color) |
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image.rectangle((1,settings.HEIGHT/2), (int(rx_value/max_value * (settings.WIDTH-2)), settings.HEIGHT - 2), rx_line_color, rx_line_color) |
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image.string_ttf(settings.FONT, 8.0, 0.0, (settings.WIDTH + 1, settings.HEIGHT - 1), "TX/RX: %.2f/%.2f Mbps" % (tx_value, rx_value), white) |
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image.rectangle((0, 0), |
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(settings.WIDTH - 1, settings.HEIGHT - 1), |
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border_color, background_color) |
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image.rectangle((1, 1), |
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(int(tx_value / max_value * (settings.WIDTH - 2)), |
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settings.HEIGHT / 2 - 1), |
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tx_line_color, tx_line_color) |
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image.rectangle((1, settings.HEIGHT / 2), |
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(int(rx_value / max_value * (settings.WIDTH - 2)), |
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settings.HEIGHT - 2), |
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rx_line_color, rx_line_color) |
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image.string_ttf(settings.FONT, 8.0, 0.0, |
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(settings.WIDTH + 1, settings.HEIGHT - 1), |
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"TX/RX: %.2f/%.2f Mbps" % (tx_value, rx_value), white) |
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io = StringIO() |
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image.writePng(io) |
... | ... | |
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return data |
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def draw_cpu_ts(hostname):
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), "cpu", "virt_cpu_total.rrd")
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outfname = os.path.join(settings.GRAPH_PREFIX, os.path.basename(hostname) + "-cpu.png")
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def draw_cpu_ts(fname, outfname):
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fname = os.path.join(fname, "cpu", "virt_cpu_total.rrd")
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outfname += "-cpu.png"
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try: |
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rrdtool.graph(outfname, "-s", "-1d", "-e", "-20s", |
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#"-t", "CPU usage", |
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"-v", "%", |
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#"--lazy", |
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"DEF:cpu=%s:ns:AVERAGE" % fname, |
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"LINE1:cpu#00ff00:") |
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except rrdtool.error, e: |
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raise InternalError(str(e)) |
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rrdtool.graph(outfname, "-s", "-1d", "-e", "-20s", |
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#"-t", "CPU usage", |
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"-v", "%", |
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#"--lazy", |
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"DEF:cpu=%s:ns:AVERAGE" % fname, |
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"LINE1:cpu#00ff00:") |
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return read_file(outfname) |
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def draw_cpu_ts_w(hostname):
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), "cpu", "virt_cpu_total.rrd")
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outfname = os.path.join(settings.GRAPH_PREFIX, os.path.basename(hostname) + "-cpu-weekly.png")
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def draw_cpu_ts_w(fname, outfname):
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fname = os.path.join(fname, "cpu", "virt_cpu_total.rrd")
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outfname += "-cpu-weekly.png"
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try: |
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rrdtool.graph(outfname, "-s", "-1w", "-e", "-20s", |
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#"-t", "CPU usage", |
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"-v", "%", |
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#"--lazy", |
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"DEF:cpu=%s:ns:AVERAGE" % fname, |
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"LINE1:cpu#00ff00:") |
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except rrdtool.error, e: |
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raise InternalError(str(e)) |
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rrdtool.graph(outfname, "-s", "-1w", "-e", "-20s", |
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#"-t", "CPU usage", |
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"-v", "%", |
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#"--lazy", |
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"DEF:cpu=%s:ns:AVERAGE" % fname, |
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"LINE1:cpu#00ff00:") |
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return read_file(outfname) |
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def draw_net_ts(hostname): |
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), "interface", "if_octets-eth0.rrd") |
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outfname = os.path.join(settings.GRAPH_PREFIX, os.path.basename(hostname) + "-net.png") |
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try: |
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rrdtool.graph(outfname, "-s", "-1d", "-e", "-20s", |
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#"-t", "Network traffic", |
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"--units", "si", |
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"-v", "Bits/s", |
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#"--lazy", |
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"COMMENT:\t\t\tAverage network traffic\\n", |
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"DEF:rx=%s:rx:AVERAGE" % fname, |
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"DEF:tx=%s:tx:AVERAGE" % fname, |
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"CDEF:rxbits=rx,8,*", |
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"CDEF:txbits=tx,8,*", |
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"LINE1:rxbits#00ff00:Incoming", |
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"GPRINT:rxbits:AVERAGE:\t%4.0lf%sbps\t\g", |
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"LINE1:txbits#0000ff:Outgoing", |
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"GPRINT:txbits:AVERAGE:\t%4.0lf%sbps\\n") |
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except rrdtool.error, e: |
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raise InternalError(str(e)) |
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def draw_net_ts(fname, outfname): |
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fname = os.path.join(fname, "interface", "if_octets-eth0.rrd") |
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outfname += "-net.png" |
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rrdtool.graph(outfname, "-s", "-1d", "-e", "-20s", |
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#"-t", "Network traffic", |
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"--units", "si", |
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"-v", "Bits/s", |
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#"--lazy", |
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"COMMENT:\t\t\tAverage network traffic\\n", |
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"DEF:rx=%s:rx:AVERAGE" % fname, |
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"DEF:tx=%s:tx:AVERAGE" % fname, |
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"CDEF:rxbits=rx,8,*", |
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"CDEF:txbits=tx,8,*", |
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"LINE1:rxbits#00ff00:Incoming", |
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"GPRINT:rxbits:AVERAGE:\t%4.0lf%sbps\t\g", |
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"LINE1:txbits#0000ff:Outgoing", |
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"GPRINT:txbits:AVERAGE:\t%4.0lf%sbps\\n") |
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return read_file(outfname) |
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def draw_net_ts_w(hostname): |
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fname = os.path.join(settings.RRD_PREFIX, os.path.basename(hostname), "interface", "if_octets-eth0.rrd") |
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outfname = os.path.join(settings.GRAPH_PREFIX, os.path.basename(hostname) + "-net-weekly.png") |
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try: |
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rrdtool.graph(outfname, "-s", "-1w", "-e", "-20s", |
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#"-t", "Network traffic", |
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"--units", "si", |
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"-v", "Bits/s", |
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#"--lazy", |
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"COMMENT:\t\t\tAverage network traffic\\n", |
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"DEF:rx=%s:rx:AVERAGE" % fname, |
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"DEF:tx=%s:tx:AVERAGE" % fname, |
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"CDEF:rxbits=rx,8,*", |
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"CDEF:txbits=tx,8,*", |
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"LINE1:rxbits#00ff00:Incoming", |
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"GPRINT:rxbits:AVERAGE:\t%4.0lf%sbps\t\g", |
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"LINE1:txbits#0000ff:Outgoing", |
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"GPRINT:txbits:AVERAGE:\t%4.0lf%sbps\\n") |
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except rrdtool.error, e: |
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raise InternalError(str(e)) |
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def draw_net_ts_w(fname, outfname): |
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fname = os.path.join(fname, "interface", "if_octets-eth0.rrd") |
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outfname += "-net-weekly.png" |
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|
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rrdtool.graph(outfname, "-s", "-1w", "-e", "-20s", |
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#"-t", "Network traffic", |
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"--units", "si", |
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"-v", "Bits/s", |
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#"--lazy", |
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"COMMENT:\t\t\tAverage network traffic\\n", |
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"DEF:rx=%s:rx:AVERAGE" % fname, |
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"DEF:tx=%s:tx:AVERAGE" % fname, |
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"CDEF:rxbits=rx,8,*", |
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"CDEF:txbits=tx,8,*", |
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"LINE1:rxbits#00ff00:Incoming", |
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"GPRINT:rxbits:AVERAGE:\t%4.0lf%sbps\t\g", |
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"LINE1:txbits#0000ff:Outgoing", |
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"GPRINT:txbits:AVERAGE:\t%4.0lf%sbps\\n") |
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return read_file(outfname) |
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@require_http_methods(["GET"]) |
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def grapher(request, hostname, graph_type): |
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hostname = str(hostname) |
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graph = "" |
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ctype = "text/plain" |
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code = 200 |
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available_graph_types = { |
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'cpu-bar': draw_cpu_bar, |
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'net-bar': draw_net_bar, |
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'cpu-ts': draw_cpu_ts, |
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'net-ts': draw_net_ts, |
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'cpu-ts-w': draw_cpu_ts_w, |
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'net-ts-w': draw_net_ts_w, |
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} |
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try: |
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if graph_type == "cpu-bar": |
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graph = draw_cpu_bar(hostname) |
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elif graph_type == "cpu-ts": |
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graph = draw_cpu_ts(hostname) |
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elif graph_type == "net-bar": |
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graph = draw_net_bar(hostname) |
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elif graph_type == "net-ts": |
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graph = draw_net_ts(hostname) |
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elif graph_type == "cpu-ts-w": |
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graph = draw_cpu_ts_w(hostname) |
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elif graph_type == "net-ts-w": |
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graph = draw_net_ts_w(hostname) |
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else: |
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raise NotFound |
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ctype = "image/png" |
|
263 |
except InternalError: |
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264 |
code = 500 |
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265 |
except NotFound: |
|
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code = 404 |
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267 |
|
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response = HttpResponse(graph, content_type=ctype) |
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response.status_code = code |
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|
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@api_method(http_method='GET', token_required=False, user_required=False, |
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format_allowed=False, logger=log) |
|
250 |
def grapher(request, graph_type, hostname): |
|
251 |
fname = uenc(os.path.join(settings.RRD_PREFIX, hostname)) |
|
252 |
if not os.path.isdir(fname): |
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253 |
raise faults.ItemNotFound('No such instance') |
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254 |
|
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255 |
outfname = uenc(os.path.join(settings.GRAPH_PREFIX, hostname)) |
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draw_func = available_graph_types[graph_type] |
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257 |
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response = HttpResponse(draw_func(fname, outfname), |
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status=200, content_type="image/png") |
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response.override_serialization = True |
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271 | 262 |
return response |
Also available in: Unified diff