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authorTim Rozet <trozet@redhat.com>2016-05-31 17:40:11 -0400
committerTim Rozet <trozet@redhat.com>2016-06-02 21:04:40 -0400
commit68fc16c4fc98d26bbb58cda6ce7945c2ac6d79bc (patch)
treed2eb7f5ccf29f66e58c7cf2b1c3575c52604adb7 /lib/python/apex/network_environment.py
parent46a44b6c0789b32e84a6166f913b2c9a61e29cc3 (diff)
Migrates network environment parsing to python
Change-Id: Ibaf20a2960a9f4b5e3f256fbed12a61d7606a967 Signed-off-by: Tim Rozet <trozet@redhat.com>
Diffstat (limited to 'lib/python/apex/network_environment.py')
-rw-r--r--lib/python/apex/network_environment.py135
1 files changed, 135 insertions, 0 deletions
diff --git a/lib/python/apex/network_environment.py b/lib/python/apex/network_environment.py
new file mode 100644
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+++ b/lib/python/apex/network_environment.py
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+##############################################################################
+# Copyright (c) 2016 Tim Rozet (trozet@redhat.com) and others.
+#
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+##############################################################################
+
+import yaml
+import re
+from .common import constants
+
+PORTS = '/ports'
+# Resources defined by <resource name>: <prefix>
+TENANT_RESOURCES = {'OS::TripleO::Network::Tenant': None,
+ 'OS::TripleO::Controller::Ports::TenantPort': PORTS,
+ 'OS::TripleO::Compute::Ports::TenantPort': PORTS}
+STORAGE_RESOURCES = {'OS::TripleO::Network::Storage': None,
+ 'OS::TripleO::Network::Ports::StorageVipPort': PORTS,
+ 'OS::TripleO::Controller::Ports::StoragePort': PORTS,
+ 'OS::TripleO::Compute::Ports::StoragePort': PORTS}
+
+
+class NetworkEnvironment:
+ """
+ This class creates a Network Environment to be used in TripleO Heat
+ Templates.
+
+ The class builds upon an existing network-environment file and modifies
+ based on a NetworkSettings object.
+ """
+ def __init__(self, net_settings, filename):
+ with open(filename, 'r') as net_env_fh:
+ self.netenv_obj = yaml.load(net_env_fh)
+ if net_settings:
+ settings_obj = net_settings.get_network_settings()
+ enabled_networks = net_settings.get_enabled_networks()
+ self.netenv_obj = \
+ self._update_net_environment(settings_obj,
+ enabled_networks)
+ else:
+ raise NetworkEnvException("Network Settings does not exist")
+
+ def _update_net_environment(self, net_settings, enabled_networks):
+ """
+ Updates Network Environment according to Network Settings
+ :param: network settings dictionary
+ :param: enabled network list
+ :return: None
+ """
+ param_def = 'parameter_defaults'
+ reg = 'resource_registry'
+ for key, prefix in TENANT_RESOURCES.items():
+ if prefix is None:
+ prefix = ''
+ m = re.split('%s/\w+\.yaml' % prefix, self.netenv_obj[reg][key])
+ if m is not None:
+ tht_dir = m[0]
+ break
+ if not tht_dir:
+ raise NetworkEnvException('Unable to parse THT Directory')
+ admin_cidr = net_settings[constants.ADMIN_NETWORK]['cidr']
+ admin_prefix = str(admin_cidr.prefixlen)
+ self.netenv_obj[param_def]['ControlPlaneSubnetCidr'] = admin_prefix
+ self.netenv_obj[param_def]['ControlPlaneDefaultRoute'] = \
+ net_settings[constants.ADMIN_NETWORK]['provisioner_ip']
+ public_cidr = net_settings[constants.PUBLIC_NETWORK]['cidr']
+ self.netenv_obj[param_def]['ExternalNetCidr'] = str(public_cidr)
+ public_range = net_settings[constants.PUBLIC_NETWORK][
+ 'usable_ip_range'].split(',')
+ self.netenv_obj[param_def]['ExternalAllocationPools'] = \
+ [{'start':
+ public_range[0],
+ 'end': public_range[1]
+ }]
+ self.netenv_obj[param_def]['ExternalInterfaceDefaultRoute'] = \
+ net_settings[constants.PUBLIC_NETWORK]['gateway']
+ self.netenv_obj[param_def]['EC2MetadataIp'] = \
+ net_settings[constants.ADMIN_NETWORK]['provisioner_ip']
+
+ if constants.PRIVATE_NETWORK in enabled_networks:
+ priv_range = net_settings[constants.PRIVATE_NETWORK][
+ 'usable_ip_range'].split(',')
+ self.netenv_obj[param_def]['TenantAllocationPools'] = \
+ [{'start':
+ priv_range[0],
+ 'end': priv_range[1]
+ }]
+ priv_cidr = net_settings[constants.PRIVATE_NETWORK]['cidr']
+ self.netenv_obj[param_def]['TenantNetCidr'] = str(priv_cidr)
+ postfix = '/tenant.yaml'
+ else:
+ postfix = '/noop.yaml'
+
+ for key, prefix in TENANT_RESOURCES.items():
+ if prefix is None:
+ prefix = ''
+ self.netenv_obj[reg][key] = tht_dir + prefix + postfix
+
+ if constants.STORAGE_NETWORK in enabled_networks:
+ storage_range = net_settings[constants.STORAGE_NETWORK][
+ 'usable_ip_range'].split(',')
+ self.netenv_obj[param_def]['StorageAllocationPools'] = \
+ [{'start':
+ storage_range[0],
+ 'end':
+ storage_range[1]
+ }]
+ storage_cidr = net_settings[constants.STORAGE_NETWORK]['cidr']
+ self.netenv_obj[param_def]['StorageNetCidr'] = str(storage_cidr)
+ postfix = '/storage.yaml'
+ else:
+ postfix = '/noop.yaml'
+
+ for key, prefix in STORAGE_RESOURCES.items():
+ if prefix is None:
+ prefix = ''
+ self.netenv_obj[reg][key] = tht_dir + prefix + postfix
+ return self.netenv_obj
+
+ def get_netenv_settings(self):
+ """
+ Getter for netenv settings
+ :return: Dictionary of network environment settings
+ """
+ return self.netenv_obj
+
+
+class NetworkEnvException(Exception):
+ def __init__(self, value):
+ self.value = value
+
+ def __str__(self):
+ return self.value