diff options
Diffstat (limited to 'bin/virttop')
| -rwxr-xr-x | bin/virttop | 195 |
1 files changed, 115 insertions, 80 deletions
diff --git a/bin/virttop b/bin/virttop index 64d53be..be67a48 100755 --- a/bin/virttop +++ b/bin/virttop @@ -9,7 +9,9 @@ import argparse import csv import dataclasses import enum +import signal import sys +import time import typing from xml.dom.minidom import Document @@ -18,6 +20,13 @@ from defusedxml import minidom import libvirt # type:ignore +# pylint: disable=unused-argument +def sig_handler_sigint(signum, frame): + """Just to handle C-c gracefully""" + print() + sys.exit(0) + + class Argparser: # pylint: disable=too-few-public-methods """Argparser class.""" @@ -59,6 +68,8 @@ class Colors(enum.EnumType): blueblue = "\x1b[38;5;24m" greenie = "\x1b[38;5;23m" goo = "\x1b[38;5;22m" + screen_clear = "\033c\033[3J" + hide_cursor = "\033[?25l" @dataclasses.dataclass @@ -135,53 +146,68 @@ def get_disk_info( return result_dict -def ffs(offset: int, header_list: typing.List[str], numbered: bool, *args): +# pylint: disable=too-many-locals +def ffs( + offset: int, + header_list: typing.Optional[typing.List[str]], + numbered: bool, + *args, +): """A simple columnar printer""" max_column_width = [] lines = [] numbers_f: typing.List[int] = [] dummy = [] - if numbered: - numbers_f.extend(range(1, len(args[-1]) + 1)) - max_column_width.append(max(len(repr(number)) for number in numbers_f)) - header_list.insert(0, "idx") + if sys.stdout.isatty(): + greenie = Colors.greenie + bold = Colors.BOLD + endc = Colors.ENDC + goo = Colors.goo + blueblue = Colors.blueblue + else: + greenie = "" + bold = "" + endc = "" + goo = "" + blueblue = "" for arg in args: max_column_width.append(max(len(repr(argette)) for argette in arg)) - index = range(0, len(header_list)) - for header, width, i in zip(header_list, max_column_width, index): - max_column_width[i] = max(len(header), width) + offset + if header_list is not None: + if numbered: + numbers_f.extend(range(1, len(args[-1]) + 1)) + max_column_width.append( + max(len(repr(number)) for number in numbers_f) + ) + header_list.insert(0, "idx") - for i in index: - dummy.append( - Colors.greenie - + Colors.BOLD - + header_list[i].ljust(max_column_width[i]) - + Colors.ENDC - ) - lines.append("".join(dummy)) - dummy.clear() + index = range(0, len(header_list)) + for header, width, i in zip(header_list, max_column_width, index): + max_column_width[i] = max(len(header), width) + offset + + for i in index: + dummy.append( + greenie + + bold + + header_list[i].ljust(max_column_width[i]) + + endc + ) + lines.append("".join(dummy)) + dummy.clear() index2 = range(0, len(args[-1])) for i in index2: if numbered: dummy.append( - Colors.goo - + Colors.BOLD - + repr(i).ljust(max_column_width[0]) - + Colors.ENDC + goo + bold + repr(i).ljust(max_column_width[0]) + endc ) for arg, width in zip(args, max_column_width[1:]): - dummy.append( - Colors.blueblue + (arg[i]).ljust(width) + Colors.ENDC - ) + dummy.append(blueblue + (arg[i]).ljust(width) + endc) else: for arg, width in zip(args, max_column_width): - dummy.append( - Colors.blueblue + (arg[i]).ljust(width) + Colors.ENDC - ) + dummy.append(blueblue + (arg[i]).ljust(width) + endc) lines.append("".join(dummy)) dummy.clear() return lines @@ -254,60 +280,69 @@ def fill_virt_data_uri( def main() -> None: """entrypoint""" + signal.signal(signal.SIGINT, sig_handler_sigint) argparser = Argparser() - virt_data = VirtData() - arp_table = get_arp_table() - for hv_host in argparser.args.uri: - conn = libvirt.openReadOnly(hv_host) - active_hosts = conn.listDomainsID() - if len(active_hosts) > 0: - # pools = conn.listAllStoragePools() - # networks = conn.listAllNetworks() - # print([pool.name() for pool in conn.listAllStoragePools()]) - # print([net.name() for net in conn.listAllNetworks()]) - virt_data.vm_id = [repr(vm_id) for vm_id in conn.listDomainsID()] - fill_virt_data_uri(conn, active_hosts, virt_data, arp_table) - # for conn_id in conn.listAllDomains(): - # print(conn_id.name()) - # print(conn_id.state()) - else: - print("no active VMs found.") - sys.exit(1) - - lines = ffs( - 2, - [ - "ID", - "NAME", - "CPU", - "MEM_ACTUAL", - "MEM_UNUSED", - "NET_WRITE_B", - "NET_READ_B", - "MAC", - "IP", - "IO_READ_B", - "IO_WRITE_B", - "SNAPSHOTS", - "URI", - ], - False, - virt_data.vm_id, - virt_data.name, - virt_data.cpu_times, - virt_data.mem_actual, - virt_data.mem_unused, - virt_data.write_bytes, - virt_data.read_bytes, - virt_data.macs, - virt_data.ips, - virt_data.disk_reads, - virt_data.disk_writes, - virt_data.snapshot_counts, - virt_data.uri, - ) - for line in lines: - print(line) + print(Colors.screen_clear, end="") + while True: + virt_data = VirtData() + arp_table = get_arp_table() + for hv_host in argparser.args.uri: + conn = libvirt.openReadOnly(hv_host) + active_hosts = conn.listDomainsID() + if len(active_hosts) > 0: + # pools = conn.listAllStoragePools() + # networks = conn.listAllNetworks() + # print([pool.name() for pool in conn.listAllStoragePools()]) + # print([net.name() for net in conn.listAllNetworks()]) + virt_data.vm_id = [ + repr(vm_id) for vm_id in conn.listDomainsID() + ] + fill_virt_data_uri(conn, active_hosts, virt_data, arp_table) + # for conn_id in conn.listAllDomains(): + # print(conn_id.name()) + # print(conn_id.state()) + else: + print("no active VMs found.") + sys.exit(1) + + lines = ffs( + 2, + [ + "ID", + "NAME", + "CPU", + "MEM_ACTUAL", + "MEM_UNUSED", + "NET_WRITE_B", + "NET_READ_B", + "MAC", + "IP", + "IO_READ_B", + "IO_WRITE_B", + "SNAPSHOTS", + "URI", + ], + False, + virt_data.vm_id, + virt_data.name, + virt_data.cpu_times, + virt_data.mem_actual, + virt_data.mem_unused, + virt_data.write_bytes, + virt_data.read_bytes, + virt_data.macs, + virt_data.ips, + virt_data.disk_reads, + virt_data.disk_writes, + virt_data.snapshot_counts, + virt_data.uri, + ) + for line in lines: + print(line) + time.sleep(argparser.args.delay) + # clears the screen + print(Colors.screen_clear, end="") + print(Colors.hide_cursor, end="") if __name__ == "__main__": |