Very beautiful and elegant list functions
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parent
de68519153
commit
dd2560c2f8
248
pvc.py
248
pvc.py
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@ -158,56 +158,112 @@ def node_list():
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List all hypervisor nodes in the cluster.
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"""
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node_list_header = ansiiprint.bold() + 'Name State: Daemon Nodes Resources: VMs CPUs RAM [MiB]: Total Used Free Allocated' + ansiiprint.end()
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node_list = []
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# Open a Zookeeper connection
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zk = pvcf.startZKConnection(zk_host)
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for node_name in zk.get_children('/nodes'):
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node_daemon_state = zk.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
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node_domain_state = zk.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
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node_cpu_count = zk.get('/nodes/{}/cpucount'.format(node_name))[0].decode('ascii')
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node_mem_used = zk.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
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node_mem_free = zk.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
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node_mem_total = int(node_mem_used) + int(node_mem_free)
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node_domains_count = zk.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
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node_running_domains = zk.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
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node_mem_allocated = 0
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for domain in node_running_domains:
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node_list = zk.get_children('/nodes')
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node_list_output = []
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node_daemon_state = {}
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node_daemon_state = {}
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node_domain_state = {}
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node_cpu_count = {}
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node_mem_used = {}
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node_mem_free = {}
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node_mem_total = {}
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node_domains_count = {}
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node_running_domains = {}
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node_mem_allocated = {}
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# Gather information for printing
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for node_name in node_list:
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node_daemon_state[node_name] = zk.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
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node_domain_state[node_name] = zk.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
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node_cpu_count[node_name] = zk.get('/nodes/{}/cpucount'.format(node_name))[0].decode('ascii')
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node_mem_used[node_name] = zk.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
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node_mem_free[node_name] = zk.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
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node_mem_total[node_name] = int(node_mem_used[node_name]) + int(node_mem_free[node_name])
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node_domains_count[node_name] = zk.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
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node_running_domains[node_name] = zk.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
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node_mem_allocated[node_name] = 0
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for domain in node_running_domains[node_name]:
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parsed_xml = pvcf.getDomainXML(zk, domain)
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duuid, dname, dmemory, dvcpu, dvcputopo = pvcf.getDomainMainDetails(parsed_xml)
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node_mem_allocated += int(dmemory)
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node_mem_allocated[node_name] += int(dmemory)
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if node_daemon_state == 'start':
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# Determine optimal column widths
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# Dynamic columns: node_name, hypervisor, migrated
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node_name_length = 0
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for node_name in node_list:
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# node_name column
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_node_name_length = len(node_name) + 1
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if _node_name_length > node_name_length:
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node_name_length = _node_name_length
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# Format the string (header)
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node_list_output.append(
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'{bold}{node_name: <{node_name_length}} \
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State: {daemon_state_colour}{node_daemon_state: <8}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
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Resources: {node_domains_count: <4} {node_cpu_count: <5} \
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RAM (MiB): {node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
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node_name_length=node_name_length,
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bold=ansiiprint.bold(),
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end_bold=ansiiprint.end(),
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daemon_state_colour='',
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domain_state_colour='',
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end_colour='',
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node_name='Name',
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node_daemon_state='Daemon',
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node_domain_state='Domain',
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node_domains_count='VMs',
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node_cpu_count='CPUs',
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node_mem_total='Total',
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node_mem_used='Used',
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node_mem_free='Free',
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node_mem_allocated='VMs'
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)
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)
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# Format the string (elements)
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for node_name in node_list:
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if node_daemon_state[node_name] == 'start':
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daemon_state_colour = ansiiprint.green()
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elif node_daemon_state == 'stop':
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elif node_daemon_state[node_name] == 'stop':
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daemon_state_colour = ansiiprint.red()
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else:
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daemon_state_colour = ansiiprint.yellow()
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if node_domain_state == 'ready':
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if node_domain_state[node_name] == 'ready':
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domain_state_colour = ansiiprint.green()
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else:
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domain_state_colour = ansiiprint.blue()
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node_output_string = '{3: <28} {0}{4: <7}{2} {1}{5: <8}{2} {6: <4} {7: <4} {8: <6} {9: <6} {10: <6} {11: <6}'.format(
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daemon_state_colour,
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domain_state_colour,
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ansiiprint.end(),
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node_name,
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node_daemon_state,
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node_domain_state,
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node_domains_count,
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node_cpu_count,
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node_mem_total,
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node_mem_used,
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node_mem_free,
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node_mem_allocated
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node_list_output.append(
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'{bold}{node_name: <{node_name_length}} \
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{daemon_state_colour}{node_daemon_state: <8}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
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{node_domains_count: <4} {node_cpu_count: <5} \
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{node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
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node_name_length=node_name_length,
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bold='',
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end_bold='',
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daemon_state_colour=daemon_state_colour,
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domain_state_colour=domain_state_colour,
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end_colour=ansiiprint.end(),
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node_name=node_name,
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node_daemon_state=node_daemon_state[node_name],
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node_domain_state=node_domain_state[node_name],
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node_domains_count=node_domains_count[node_name],
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node_cpu_count=node_cpu_count[node_name],
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node_mem_total=node_mem_total[node_name],
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node_mem_used=node_mem_used[node_name],
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node_mem_free=node_mem_free[node_name],
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node_mem_allocated=node_mem_allocated[node_name]
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)
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)
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node_list.append(node_output_string)
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click.echo(node_list_header)
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click.echo('\n'.join(sorted(node_list)))
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click.echo('\n'.join(sorted(node_list_output)))
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# Close the Zookeeper connection
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pvcf.stopZKConnection(zk)
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###############################################################################
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@ -780,47 +836,117 @@ def vm_list(hypervisor):
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List all virtual machines in the cluster.
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"""
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vm_list_header = ansiiprint.bold() + 'Name UUID State RAM [MiB] vCPUs Hypervisor Migrated?' + ansiiprint.end()
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vm_list = []
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# Open a Zookeeper connection
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zk = pvcf.startZKConnection(zk_host)
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for vm in zk.get_children('/domains'):
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vm_list = zk.get_children('/domains')
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vm_list_output = []
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vm_hypervisor = {}
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vm_state = {}
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vm_migrated = {}
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vm_uuid = {}
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vm_name = {}
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vm_memory = {}
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vm_vcpu = {}
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# Gather information for printing
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for vm in vm_list:
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# Check hypervisor to avoid unneeded ZK calls
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vm_hypervisor = zk.get('/domains/{}/hypervisor'.format(vm))[0].decode('ascii')
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if hypervisor != None and vm_hypervisor != hypervisor:
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vm_hypervisor[vm] = zk.get('/domains/{}/hypervisor'.format(vm))[0].decode('ascii')
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if hypervisor != None and vm_hypervisor[vm] != hypervisor:
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continue
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vm_state = zk.get('/domains/{}/state'.format(vm))[0].decode('ascii')
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vm_state[vm] = zk.get('/domains/{}/state'.format(vm))[0].decode('ascii')
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vm_lasthypervisor = zk.get('/domains/{}/lasthypervisor'.format(vm))[0].decode('ascii')
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if vm_lasthypervisor != '':
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vm_migrated = 'from {}'.format(vm_lasthypervisor)
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vm_migrated[vm] = 'from {}'.format(vm_lasthypervisor)
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else:
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vm_migrated = 'no'
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vm_migrated[vm] = 'no'
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vm_xml = pvcf.getDomainXML(zk, vm)
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vm_uuid, vm_name, vm_memory, vm_vcpu, vm_vcputopo = pvcf.getDomainMainDetails(vm_xml)
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vm_uuid[vm], vm_name[vm], vm_memory[vm], vm_vcpu[vm], vm_vcputopo = pvcf.getDomainMainDetails(vm_xml)
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if vm_state == 'start':
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state_colour = ansiiprint.green()
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elif vm_state == 'stop' or vm_state == 'shutdown':
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state_colour = ansiiprint.red()
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else:
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state_colour = ansiiprint.yellow()
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# Determine optimal column widths
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# Dynamic columns: node_name, hypervisor, migrated
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vm_name_length = 0
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vm_hypervisor_length = 0
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vm_migrated_length = 0
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for vm in vm_list:
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# vm_name column
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_vm_name_length = len(vm_name[vm]) + 1
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if _vm_name_length > vm_name_length:
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vm_name_length = _vm_name_length
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# vm_hypervisor column
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_vm_hypervisor_length = len(vm_hypervisor[vm]) + 1
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if _vm_hypervisor_length > vm_hypervisor_length:
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vm_hypervisor_length = _vm_hypervisor_length
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# vm_migrated column
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_vm_migrated_length = len(vm_migrated[vm]) + 1
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if _vm_migrated_length > vm_migrated_length:
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vm_migrated_length = _vm_migrated_length
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vm_output_string = '{2: <16} {3: <32} {0}{4: <8}{1} {5: <6} {6: <5} {7: <20} {8: <25}'.format(
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state_colour,
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ansiiprint.end(),
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vm_name,
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vm_uuid,
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vm_state,
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vm_memory,
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vm_vcpu,
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vm_hypervisor,
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vm_migrated
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# Format the string (header)
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vm_list_header = ansiiprint.bold() + 'Name UUID State RAM [MiB] vCPUs Hypervisor Migrated?' + ansiiprint.end()
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vm_list_output.append(
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'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
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{vm_state_colour}{vm_state: <8}{end_colour} \
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{vm_memory: <10} {vm_vcpu: <6} \
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{vm_hypervisor: <{vm_hypervisor_length}} \
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{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
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vm_name_length=vm_name_length,
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vm_hypervisor_length=vm_hypervisor_length,
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vm_migrated_length=vm_migrated_length,
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bold=ansiiprint.bold(),
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end_bold=ansiiprint.end(),
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vm_state_colour='',
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end_colour='',
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vm_name='Name',
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vm_uuid='UUID',
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vm_state='State',
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vm_memory='RAM (MiB)',
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vm_vcpu='vCPUs',
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vm_hypervisor='Hypervisor',
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vm_migrated='Migrated'
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)
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vm_list.append(vm_output_string)
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)
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# Format the string (elements)
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for vm in vm_list:
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if vm_state[vm] == 'start':
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vm_state_colour = ansiiprint.green()
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elif vm_state[vm] == 'stop':
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vm_state_colour = ansiiprint.red()
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else:
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vm_state_colour = ansiiprint.blue()
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click.echo(vm_list_header)
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click.echo('\n'.join(sorted(vm_list)))
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vm_list_output.append(
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'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
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{vm_state_colour}{vm_state: <8}{end_colour} \
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{vm_memory: <10} {vm_vcpu: <6} \
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{vm_hypervisor: <{vm_hypervisor_length}} \
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{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
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vm_name_length=vm_name_length,
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vm_hypervisor_length=vm_hypervisor_length,
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vm_migrated_length=vm_migrated_length,
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bold='',
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end_bold='',
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vm_state_colour=vm_state_colour,
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end_colour=ansiiprint.end(),
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vm_name=vm_name[vm],
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vm_uuid=vm_uuid[vm],
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vm_state=vm_state[vm],
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vm_memory=vm_memory[vm],
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vm_vcpu=vm_vcpu[vm],
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vm_hypervisor=vm_hypervisor[vm],
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vm_migrated=vm_migrated[vm]
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)
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)
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click.echo('\n'.join(sorted(vm_list_output)))
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# Close the Zookeeper connection
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pvcf.stopZKConnection(zk)
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###############################################################################
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