[#5] Update the writer functions too
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parent
4737556c2c
commit
276b618137
7
pvcd.py
7
pvcd.py
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@ -34,6 +34,7 @@ import configparser
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import apscheduler.schedulers.background
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import pvcd.ansiiprint as ansiiprint
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import pvcd.zkhandler as zkhandler
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import pvcd.VMInstance as VMInstance
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import pvcd.NodeInstance as NodeInstance
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@ -145,7 +146,7 @@ zk_conn.add_listener(zk_listener)
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def cleanup(signum, frame):
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ansiiprint.echo('Terminating daemon', '', 'e')
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# Set stop state in Zookeeper
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zk_conn.set('/nodes/{}/daemonstate'.format(myhostname), 'stop'.encode('ascii'))
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zkhandler.writedata(zk_conn, '/nodes/{}/daemonstate'.format(myhostname), [ 'stop' ])
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# Close the Zookeeper connection
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zk_conn.close()
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# Stop keepalive thread
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@ -179,7 +180,7 @@ print(' {0}Kernel:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticda
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if zk_conn.exists('/nodes/{}'.format(myhostname)):
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print("Node is " + ansiiprint.green() + "present" + ansiiprint.end() + " in Zookeeper")
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# Update static data just in case it's changed
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zk_conn.set('/nodes/{}/staticdata'.format(myhostname), ' '.join(staticdata).encode('ascii'))
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zkhandler.writedata(zk_conn, '/nodes/{}/staticdata'.format(myhostname), [ ' '.join(staticdata) ])
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else:
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print("Node is " + ansiiprint.red() + "absent" + ansiiprint.end() + " in Zookeeper; adding new node")
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keepalive_time = int(time.time())
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@ -201,7 +202,7 @@ else:
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transaction.create('/nodes/{}/ipmipassword'.format(myhostname), config['ipmi_password'].encode('ascii'))
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transaction.commit()
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zk_conn.set('/nodes/{}/daemonstate'.format(myhostname), 'init'.encode('ascii'))
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zkhandler.writedata(zk_conn, '/nodes/{}/daemonstate'.format(myhostname), [ 'init' ])
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t_node = dict()
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s_domain = dict()
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@ -162,14 +162,14 @@ class NodeInstance():
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transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), current_hypervisor.encode('ascii'))
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transaction.commit()
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self.zk_conn.set('/nodes/{}/runningdomains'.format(self.name), ''.encode('ascii'))
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self.zk_conn.set('/nodes/{}/domainstate'.format(self.name), 'flushed'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/runningdomains'.format(self.name), [ '' ])
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zkhandler.writedata(self.zk_conn, '/nodes/{}/domainstate'.format(self.name), [ 'flushed' ])
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self.inflush = False
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def unflush(self):
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self.inflush = True
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ansiiprint.echo('Restoring node {} to active service.'.format(self.name), '', 'i')
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self.zk_conn.set('/nodes/{}/domainstate'.format(self.name), 'ready'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/domainstate'.format(self.name), [ 'ready' ])
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for dom_uuid in self.s_domain:
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last_hypervisor = zkhandler.readdata(self.zk_conn, '/domains/{}/lasthypervisor'.format(dom_uuid))
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if last_hypervisor != self.name:
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@ -196,7 +196,7 @@ class NodeInstance():
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past_state = zkhandler.readdata(self.zk_conn, '/nodes/{}/daemonstate'.format(self.name))
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if past_state != 'run':
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self.daemon_state = 'run'
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self.zk_conn.set('/nodes/{}/daemonstate'.format(self.name), 'run'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/daemonstate'.format(self.name), [ 'run' ])
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else:
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self.daemon_state = 'run'
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@ -210,7 +210,7 @@ class NodeInstance():
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raise
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except Exception as e:
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# Toggle a state "change"
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self.zk_conn.set('/domains/{}/state'.format(domain), instance.getstate().encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(domain), [ instance.getstate() ])
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# Set our information in zookeeper
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self.name = lv_conn.getHostname()
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@ -256,7 +256,7 @@ class NodeInstance():
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if node_keepalive < node_deadtime and node_daemon_state == 'run':
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# CHECK VERSIONING HERE
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ansiiprint.echo('Node {} seems dead - starting monitor for fencing'.format(node_name), '', 'w')
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self.zk_conn.set('/nodes/{}/daemonstate'.format(node_name), 'dead'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/daemonstate'.format(node_name), [ 'dead' ])
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fence_thread = threading.Thread(target=fenceNode, args=(node_name, self.zk_conn), kwargs={})
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fence_thread.start()
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@ -351,7 +351,7 @@ def fenceNode(node_name, zk_conn):
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transaction.commit()
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# Set node in flushed state for easy remigrating when it comes back
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zk_conn.set('/nodes/{}/domainstate'.format(node_name), 'flushed'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/domainstate'.format(node_name), [ 'flushed' ])
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#
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# Perform an IPMI fence
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@ -72,7 +72,7 @@ class VMInstance:
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# Add the domain to the domain_list array
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self.thishypervisor.domain_list.append(self.domuuid)
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# Push the change up to Zookeeper
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self.zk_conn.set('/nodes/{}/runningdomains'.format(self.thishypervisor.name), ' '.join(self.thishypervisor.domain_list).encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/runningdomains'.format(self.thishypervisor.name), [ ' '.join(self.thishypervisor.domain_list) ])
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except Exception as e:
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ansiiprint.echo('Error adding domain to list: {}'.format(e), '', 'c')
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@ -82,7 +82,7 @@ class VMInstance:
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# Remove the domain from the domain_list array
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self.thishypervisor.domain_list.remove(self.domuuid)
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# Push the change up to Zookeeper
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self.zk_conn.set('/nodes/{}/runningdomains'.format(self.thishypervisor.name), ' '.join(self.thishypervisor.domain_list).encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/nodes/{}/runningdomains'.format(self.thishypervisor.name), [ ' '.join(self.thishypervisor.domain_list) ])
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except Exception as e:
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ansiiprint.echo('Error removing domain from list: {}'.format(e), '', 'c')
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@ -108,7 +108,7 @@ class VMInstance:
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self.dom = dom
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except libvirt.libvirtError as e:
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ansiiprint.echo('Failed to create VM', '{}:'.format(self.domuuid), 'e')
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'failed'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'failed' ])
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self.dom = None
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lv_conn.close()
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@ -135,7 +135,7 @@ class VMInstance:
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except libvirt.libvirtError as e:
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ansiiprint.echo('Failed to restart VM', '{}:'.format(self.domuuid), 'e')
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'start'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'start' ])
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lv_conn.close()
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self.inrestart = False
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@ -163,7 +163,7 @@ class VMInstance:
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self.removeDomainFromList()
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if self.inrestart == False:
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'stop'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'stop' ])
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ansiiprint.echo('Successfully stopped VM', '{}:'.format(self.domuuid), 'o')
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self.dom = None
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@ -191,7 +191,7 @@ class VMInstance:
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self.removeDomainFromList()
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if self.inrestart == False:
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'stop'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'stop' ])
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ansiiprint.echo('Successfully shutdown VM', '{}:'.format(self.domuuid), 'o')
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self.dom = None
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@ -237,7 +237,7 @@ class VMInstance:
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self.removeDomainFromList()
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time.sleep(1)
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'start'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'start' ])
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self.inmigrate = False
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# Receive the migration from another host (wait until VM is running)
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@ -322,7 +322,7 @@ class VMInstance:
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self.addDomainToList()
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# VM is already running and should be but stuck in migrate state
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elif self.state == "migrate":
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'start'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'start' ])
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self.addDomainToList()
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# VM should be restarted
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elif self.state == "restart":
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@ -342,7 +342,7 @@ class VMInstance:
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self.receive_migrate()
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# VM should be restarted (i.e. started since it isn't running)
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if self.state == "restart":
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self.zk_conn.set('/domains/{}/state'.format(self.domuuid), 'start'.encode('ascii'))
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zkhandler.writedata(self.zk_conn, '/domains/{}/state'.format(self.domuuid), [ 'start' ])
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# VM should be shut down; ensure it's gone from this node's domain_list
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elif self.state == "shutdown":
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self.removeDomainFromList()
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@ -46,8 +46,7 @@ def writedata(zk_conn, key, data):
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version = meta.version
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new_version = version + 1
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zk_transaction = zk_conn.transaction()
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for line in data:
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zk_transaction.set_data(key, line.encode('ascii'))
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zk_transaction.set_data(key, data.encode('ascii'))
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try:
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zk_transaction.check(key, new_version)
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except TypeError:
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@ -56,10 +55,3 @@ def writedata(zk_conn, key, data):
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zk_transaction.commit()
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return 0
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# Key create function
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def createkey(zk_conn, key, data):
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zk_transaction = zk_conn.transaction()
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for line in data:
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zk_transaction.create(key, line.encode('ascii'))
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zk_transaction.commit()
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