Fuel Config Reap + Additional Refactoring for Autodeployment

[genesis.git] / fuel / deploy / environments / libvirt_environment.py

diff --git a/fuel/deploy/environments/libvirt_environment.py b/fuel/deploy/environments/libvirt_environment.py
new file mode 100644 (file)
index 0000000..e156fd2
--- /dev/null
+++ b/fuel/deploy/environments/libvirt_environment.py
@@ -0,0 +1,93 @@
+from lxml import etree
+import glob
+
+import common
+from execution_environment import ExecutionEnvironment
+
+exec_cmd = common.exec_cmd
+err = common.err
+log = common.log
+check_dir_exists = common.check_dir_exists
+check_file_exists = common.check_file_exists
+check_if_root = common.check_if_root
+
+NET_DIR = 'libvirt/networks'
+
+class LibvirtEnvironment(ExecutionEnvironment):
+
+    def __init__(self, storage_dir, dha_file, dea, root_dir):
+        super(LibvirtEnvironment, self).__init__(
+            storage_dir, dha_file, root_dir)
+        self.dea = dea
+        self.network_dir = '%s/%s' % (self.root_dir, NET_DIR)
+        self.node_ids = self.dha.get_all_node_ids()
+        self.net_names = self.collect_net_names()
+
+    def create_storage(self, node_id, disk_path, disk_sizes):
+        if node_id == self.fuel_node_id:
+           disk_size = disk_sizes['fuel']
+        else:
+           roles = self.dea.get_node_role(node_id)
+           role = 'controller' if 'controller' in roles else 'compute'
+           disk_size = disk_sizes[role]
+        exec_cmd('fallocate -l %s %s' % (disk_size, disk_path))
+
+    def create_vms(self):
+        temp_dir = exec_cmd('mktemp -d')
+        disk_sizes = self.dha.get_disks()
+        for node_id in self.node_ids:
+            vm_name = self.dha.get_node_property(node_id, 'libvirtName')
+            vm_template = '%s/%s' % (self.root_dir,
+                                     self.dha.get_node_property(
+                                         node_id, 'libvirtTemplate'))
+            check_file_exists(vm_template)
+            disk_path = '%s/%s.raw' % (self.storage_dir, vm_name)
+            self.create_storage(node_id, disk_path, disk_sizes)
+            temp_vm_file = '%s/%s' % (temp_dir, vm_name)
+            exec_cmd('cp %s %s' % (vm_template, temp_vm_file))
+            self.define_vm(vm_name, temp_vm_file, disk_path)
+        exec_cmd('rm -fr %s' % temp_dir)
+
+    def create_networks(self):
+        for net_file in glob.glob('%s/*' % self.network_dir):
+            exec_cmd('virsh net-define %s' % net_file)
+        for net in self.net_names:
+            log('Creating network %s' % net)
+            exec_cmd('virsh net-autostart %s' % net)
+            exec_cmd('virsh net-start %s' % net)
+
+    def delete_networks(self):
+        for net in self.net_names:
+            log('Deleting network %s' % net)
+            exec_cmd('virsh net-destroy %s' % net, False)
+            exec_cmd('virsh net-undefine %s' % net, False)
+
+    def get_net_name(self, net_file):
+        with open(net_file) as f:
+            net_xml = etree.parse(f)
+            name_list = net_xml.xpath('/network/name')
+            for name in name_list:
+                net_name = name.text
+        return net_name
+
+    def collect_net_names(self):
+        net_list = []
+        for net_file in glob.glob('%s/*' % self.network_dir):
+            name = self.get_net_name(net_file)
+            net_list.append(name)
+        return net_list
+
+    def delete_vms(self):
+        for node_id in self.node_ids:
+            self.delete_vm(node_id)
+
+    def setup_environment(self):
+        check_if_root()
+        check_dir_exists(self.network_dir)
+        self.cleanup_environment()
+        self.create_vms()
+        self.create_networks()
+
+    def cleanup_environment(self):
+        self.delete_vms()
+        self.delete_networks()