Replace godep with dep

vendor/k8s.io/kubernetes/cluster/juju/layers/kubeapi-load-balancer/reactive/load_balancer.py

@@ -0,0 +1,169 @@
+#!/usr/bin/env python
+
+# Copyright 2015 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import socket
+import subprocess
+
+from charms import layer
+from charms.reactive import when, when_any, when_not
+from charms.reactive import set_state, remove_state
+from charmhelpers.core import hookenv
+from charmhelpers.contrib.charmsupport import nrpe
+
+from charms.layer import nginx
+
+from subprocess import Popen
+from subprocess import PIPE
+from subprocess import STDOUT
+from subprocess import CalledProcessError
+
+
+@when('certificates.available')
+def request_server_certificates(tls):
+    '''Send the data that is required to create a server certificate for
+    this server.'''
+    # Use the public ip of this unit as the Common Name for the certificate.
+    common_name = hookenv.unit_public_ip()
+    # Create SANs that the tls layer will add to the server cert.
+    sans = [
+        hookenv.unit_public_ip(),
+        hookenv.unit_private_ip(),
+        socket.gethostname(),
+    ]
+    # Create a path safe name by removing path characters from the unit name.
+    certificate_name = hookenv.local_unit().replace('/', '_')
+    # Request a server cert with this information.
+    tls.request_server_cert(common_name, sans, certificate_name)
+
+
+@when('config.changed.port')
+def close_old_port():
+    config = hookenv.config()
+    old_port = config.previous('port')
+    if not old_port:
+        return
+    try:
+        hookenv.close_port(old_port)
+    except CalledProcessError:
+        hookenv.log('Port %d already closed, skipping.' % old_port)
+
+
+@when('nginx.available', 'apiserver.available',
+      'certificates.server.cert.available')
+def install_load_balancer(apiserver, tls):
+    ''' Create the default vhost template for load balancing '''
+    # Get the tls paths from the layer data.
+    layer_options = layer.options('tls-client')
+    server_cert_path = layer_options.get('server_certificate_path')
+    cert_exists = server_cert_path and os.path.isfile(server_cert_path)
+    server_key_path = layer_options.get('server_key_path')
+    key_exists = server_key_path and os.path.isfile(server_key_path)
+    # Do both the the key and certificate exist?
+    if cert_exists and key_exists:
+        # At this point the cert and key exist, and they are owned by root.
+        chown = ['chown', 'www-data:www-data', server_cert_path]
+
+        # Change the owner to www-data so the nginx process can read the cert.
+        subprocess.call(chown)
+        chown = ['chown', 'www-data:www-data', server_key_path]
+
+        # Change the owner to www-data so the nginx process can read the key.
+        subprocess.call(chown)
+
+        port = hookenv.config('port')
+        hookenv.open_port(port)
+        services = apiserver.services()
+        nginx.configure_site(
+                'apilb',
+                'apilb.conf',
+                server_name='_',
+                services=services,
+                port=port,
+                server_certificate=server_cert_path,
+                server_key=server_key_path,
+        )
+        hookenv.status_set('active', 'Loadbalancer ready.')
+
+
+@when('nginx.available')
+def set_nginx_version():
+    ''' Surface the currently deployed version of nginx to Juju '''
+    cmd = 'nginx -v'
+    p = Popen(cmd, shell=True,
+              stdin=PIPE,
+              stdout=PIPE,
+              stderr=STDOUT,
+              close_fds=True)
+    raw = p.stdout.read()
+    # The version comes back as:
+    # nginx version: nginx/1.10.0 (Ubuntu)
+    version = raw.split(b'/')[-1].split(b' ')[0]
+    hookenv.application_version_set(version.rstrip())
+
+
+@when('website.available')
+def provide_application_details(website):
+    ''' re-use the nginx layer website relation to relay the hostname/port
+    to any consuming kubernetes-workers, or other units that require the
+    kubernetes API '''
+    website.configure(port=hookenv.config('port'))
+
+
+@when('loadbalancer.available')
+def provide_loadbalancing(loadbalancer):
+    '''Send the public address and port to the public-address interface, so
+    the subordinates can get the public address of this loadbalancer.'''
+    loadbalancer.set_address_port(hookenv.unit_get('public-address'),
+                                  hookenv.config('port'))
+
+
+@when('nrpe-external-master.available')
+@when_not('nrpe-external-master.initial-config')
+def initial_nrpe_config(nagios=None):
+    set_state('nrpe-external-master.initial-config')
+    update_nrpe_config(nagios)
+
+
+@when('nginx.available')
+@when('nrpe-external-master.available')
+@when_any('config.changed.nagios_context',
+          'config.changed.nagios_servicegroups')
+def update_nrpe_config(unused=None):
+    services = ('nginx',)
+
+    hostname = nrpe.get_nagios_hostname()
+    current_unit = nrpe.get_nagios_unit_name()
+    nrpe_setup = nrpe.NRPE(hostname=hostname)
+    nrpe.add_init_service_checks(nrpe_setup, services, current_unit)
+    nrpe_setup.write()
+
+
+@when_not('nrpe-external-master.available')
+@when('nrpe-external-master.initial-config')
+def remove_nrpe_config(nagios=None):
+    remove_state('nrpe-external-master.initial-config')
+
+    # List of systemd services for which the checks will be removed
+    services = ('nginx',)
+
+    # The current nrpe-external-master interface doesn't handle a lot of logic,
+    # use the charm-helpers code for now.
+    hostname = nrpe.get_nagios_hostname()
+    nrpe_setup = nrpe.NRPE(hostname=hostname)
+
+    for service in services:
+        nrpe_setup.remove_check(shortname=service)