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#!/usr/bin/env python
import sys
if sys.version_info <= (2,7):
# SystemExit defaults to returning 1 when printing a string to stderr
raise SystemExit("You are using python %s, but version 2.7 or greater is "
"required" % sys.version_info)
required = 0
optional = 0
# Test for whisper
try:
import whisper
except ImportError:
# No? test for ceres
try:
import ceres
# We imported ceres, but not whisper so it's an optional dependency
sys.stderr.write("[OPTIONAL] Unable to import the 'whisper' module. Without it the webapp will be unable to read .wsp files\n")
optional += 1
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'whisper' or 'ceres' modules, please download this package from the Graphite project page and install it.\n")
required += 1
# Test for cairocffi or pycairo
try:
import cairocffi as cairo
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'cairocffi' module, attempting to fall back to pycairo\n")
try:
import cairo
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'cairo' module, do you have pycairo installed for python %s?\n" % sys.version_info.major)
cairo = None
required += 1
# Test that pycairo has the PNG backend
try:
if cairo:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
del surface
except Exception:
sys.stderr.write("[REQUIRED] Failed to create an ImageSurface with cairo, you probably need to recompile cairo with PNG support\n")
required += 1
# Test that cairo can find fonts
try:
if cairo:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 10, 10)
context = cairo.Context(surface)
context.font_extents()
del surface, context
except Exception:
sys.stderr.write("[REQUIRED] Failed to create text with cairo, this probably means cairo cant find any fonts. Install some system fonts and try again\n")
# Test for django
try:
import django
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'django' module, do you have Django installed for python %s?\n" % sys.version_info.major)
django = None
required += 1
# Test for pytz
try:
import pytz
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'pytz' module, do you have pytz module installed for python %s?\n" % sys.version_info.major)
required += 1
# Test for pyparsing
try:
import pyparsing
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'pyparsing' module, do you have pyparsing module installed for python %s?\n" % sys.version_info.major)
required += 1
# Test for django-tagging
try:
import tagging
except ImportError:
sys.stderr.write("[REQUIRED] Unable to import the 'tagging' module, do you have django-tagging installed for python %s?\n" % sys.version_info.major)
required += 1
if django and django.VERSION[:2] < (1,8):
sys.stderr.write("[REQUIRED] You have django version %s installed, but version 1.8 or greater is required\n" % django.get_version())
required += 1
# Test for python-memcached
try:
import memcache
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'memcache' module, do you have python-memcached installed for python %s? This feature is not required but greatly improves performance.\n" % sys.version_info.major)
optional += 1
# Test for python-ldap
try:
import ldap
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'ldap' module, do you have python-ldap installed for python %s? Without python-ldap, you will not be able to use LDAP authentication in the graphite webapp.\n" % sys.version_info.major)
optional += 1
# Test for txamqp
try:
import txamqp
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'txamqp' module, this is required if you want to use AMQP as an input to Carbon. Note that txamqp requires python 2.5 or greater.\n")
optional += 1
# Test for python-rrdtool
try:
import rrdtool
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'python-rrdtool' module, this is required for reading RRD.\n")
optional += 1
# Test for whitenoise
try:
import whitenoise
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'whitenoise' module. This is useful for serving static files.\n")
optional += 1
# Test for pyhash
try:
import pyhash
except ImportError:
sys.stderr.write("[OPTIONAL] Unable to import the 'pyhash' module. This is useful for fnv1_ch hashing support.\n")
optional += 1
if optional:
sys.stderr.write("%d optional dependencies not met. Please consider the optional items before proceeding.\n" % optional)
else:
print("All optional dependencies are met.")
if required:
sys.stderr.write("%d necessary dependencies not met. Graphite will not function until these dependencies are fulfilled.\n" % required)
sys.exit(1)
else:
print("All necessary dependencies are met.")
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