164 lines
3.2 KiB
Python
164 lines
3.2 KiB
Python
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#
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# Copyright 2012 Canonical Ltd.
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#
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# Authors:
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# James Page <james.page@ubuntu.com>
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# Paul Collins <paul.collins@canonical.com>
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#
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import os
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import subprocess
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import socket
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import sys
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def do_hooks(hooks):
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hook = os.path.basename(sys.argv[0])
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try:
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hooks[hook]()
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except KeyError:
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juju_log('INFO',
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"This charm doesn't know how to handle '{}'.".format(hook))
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def install(*pkgs):
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cmd = [
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'apt-get',
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'-y',
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'install'
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]
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for pkg in pkgs:
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cmd.append(pkg)
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subprocess.check_call(cmd)
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TEMPLATES_DIR = 'templates'
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try:
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import jinja2
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except ImportError:
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install('python-jinja2')
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import jinja2
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def render_template(template_name, context, template_dir=TEMPLATES_DIR):
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templates = jinja2.Environment(
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loader=jinja2.FileSystemLoader(template_dir)
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)
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template = templates.get_template(template_name)
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return template.render(context)
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def configure_source():
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source = config_get('source')
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if (source.startswith('ppa:') or
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source.startswith('cloud:') or
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source.startswith('http:')):
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cmd = [
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'add-apt-repository',
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source
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]
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subprocess.check_call(cmd)
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if source.startswith('http:'):
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key = config_get('key')
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cmd = [
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'apt-key',
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'import',
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key
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]
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subprocess.check_call(cmd)
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cmd = [
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'apt-get',
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'update'
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]
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subprocess.check_call(cmd)
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# Protocols
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TCP = 'TCP'
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UDP = 'UDP'
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def expose(port, protocol='TCP'):
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cmd = [
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'open-port',
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'{}/{}'.format(port, protocol)
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]
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subprocess.check_call(cmd)
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def juju_log(severity, message):
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cmd = [
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'juju-log',
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'--log-level', severity,
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message
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]
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subprocess.check_call(cmd)
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def relation_ids(relation):
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cmd = [
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'relation-ids',
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relation
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]
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return subprocess.check_output(cmd).split() # IGNORE:E1103
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def relation_list(rid):
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cmd = [
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'relation-list',
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'-r', rid,
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]
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return subprocess.check_output(cmd).split() # IGNORE:E1103
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def relation_get(attribute, unit=None, rid=None):
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cmd = [
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'relation-get',
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]
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if rid:
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cmd.append('-r')
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cmd.append(rid)
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cmd.append(attribute)
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if unit:
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cmd.append(unit)
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return subprocess.check_output(cmd).strip() # IGNORE:E1103
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def relation_set(**kwargs):
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cmd = [
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'relation-set'
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]
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for k, v in kwargs.items():
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cmd.append('{}={}'.format(k, v))
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subprocess.check_call(cmd)
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def unit_get(attribute):
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cmd = [
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'unit-get',
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attribute
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]
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return subprocess.check_output(cmd).strip() # IGNORE:E1103
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def config_get(attribute):
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cmd = [
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'config-get',
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attribute
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]
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return subprocess.check_output(cmd).strip() # IGNORE:E1103
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def get_unit_hostname():
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return socket.gethostname()
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def get_host_ip(hostname=unit_get('private-address')):
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cmd = [
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'dig',
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'+short',
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hostname
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]
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return subprocess.check_output(cmd).strip() # IGNORE:E1103
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