wscript

#!/usr/bin/env python
# coding: utf-8

from waflib.Build import POST_LAZY
import socket

# See: https://stackoverflow.com/questions/20913411/test-if-an-internet-connection-is-present-in-python
REMOTE_SERVER = "www.google.com"
def is_connected(hostname):
  try:
    # see if we can resolve the host name -- tells us if there is
    # a DNS listening
    host = socket.gethostbyname(hostname)
    # connect to the host -- tells us if the host is actually
    # reachable
    s = socket.create_connection((host, 80), 2)
    return True
  except:
     pass


def build(ctx):
    if ctx.cmd == 'install':
        if not ctx.env.BUILD_CONDA:
            raise Exception('not building conda package; Conda (https://www.anaconda.com/download/) is missing')

        if not is_connected(REMOTE_SERVER):
            raise Exception('Internet connection required to build the conda package. Please check your connection.')

        ctx.add_group('group1')
        ctx.add_group('group2')
        ctx.add_group('group3')
        ctx.add_group('group4')
        ctx.add_group('group5')
        ctx.add_group('group6')
        ctx.add_group('group7')
        ctx.post_mode = POST_LAZY

        top = ctx.srcnode.abspath()
        install_dir = ctx.env.EXEC_PREFIX
        
        cmd1 = "echo Building the conda package, this takes several minutes..."
        cmd2 = '%s install -y anaconda-client conda-build || echo "Tried to install the anaconda-client and the conda-build package"' % (ctx.env.get_flat('CONDA'))
        cmd3 = 'export WITHOUT_WAF=' + str(int(not ctx.env.EMBED_LATNET_CONDA)) + \
        ' && export LATNETBUILDER_INSTALL_DIR=' + install_dir + \
        ' && %s config --add channels conda-forge &&  %s build python-wrapper/conda_recipe' % (ctx.env.get_flat('CONDA'), ctx.env.get_flat('CONDA'))
        cmd4 = 'echo Installing the conda package, this could take a few minutes...'
        cmd5 = 'conda create -y -n latnetbuilder || echo "Tried to create latnetbuilder environment"'
        cmd6 = 'conda remove -y latnetbuilder -n latnetbuilder || echo "Tried to remove package latnetbuilder from environment latnetbuilder"'
        cmd7 = 'conda install -y --use-local latnetbuilder -n latnetbuilder'

        ctx.set_group('group1')
        ctx(rule   = cmd1, source = 'wscript', cwd = top, always = True)
        ctx.set_group('group2')
        ctx(rule   = cmd2, source = 'wscript', cwd = top, always = True)
        ctx.set_group('group3')
        ctx(rule   = cmd3, source = 'wscript', cwd = top, always = True)
        ctx.set_group('group4')
        ctx(rule   = cmd4, source = 'wscript', always = True)
        ctx.set_group('group5')
        ctx(rule   = cmd5, source = 'wscript', always = True)
        ctx.set_group('group6')
        ctx(rule   = cmd6, source = 'wscript', always = True)
        ctx.set_group('group7')
        ctx(rule   = cmd7, source = 'wscript', always = True)