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Current File : /lib/fm-agent/plugins/bandwidth.py
import agent_util
import sys
import os
from datetime import datetime
from agent_util import float
import fnmatch


class BandwidthPlugin(agent_util.Plugin):
    textkey = "bandwidth"
    label = "Bandwidth"

    @classmethod
    def get_metadata(self, config):
        def add_to_interfaces(iface):
            if any(fnmatch.fnmatch(iface, f) for f in filter_interfaces):
                return
            if type(interfaces) == set:
                interfaces.add(iface)
            else:
                interfaces.append(iface)

        status = agent_util.SUPPORTED
        msg = None
        interfaces = set()
        filter_interfaces = []

        filter_interfaces_config = config.get("filter_interfaces")
        if filter_interfaces_config:
            if filter_interfaces_config[0] == "[":
                filter_interfaces_config = filter_interfaces_config.strip("[]")
            for f in filter_interfaces_config.split(","):
                f = f.strip()
                if f:
                    if f[0] == '"':
                        f = f.strip('"')
                    elif f[0] == "'":
                        f = f.strip("'")
                if f:
                    filter_interfaces.append(f)

        if "freebsd" in sys.platform or "darwin" in sys.platform:
            netstat_binary = agent_util.which("netstat")

            if not netstat_binary:
                self.log.info("netstat not found")
                status = agent_util.UNSUPPORTED
                msg = "Please install netstat."
                return {}

            if status is agent_util.SUPPORTED:
                ret, output = agent_util.execute_command("%s -ib" % netstat_binary)
                self.log.debug("BANDWIDTH INFO")
                self.log.debug(output)
                if config.get("debug", False):
                    self.log.debug(
                        "#####################################################"
                    )
                    self.log.debug("Bandwidth command 'netstat -ib' output:")
                    self.log.debug(output)
                    self.log.debug(
                        "#####################################################"
                    )

                output = output.splitlines()[1:]
                for line in output:
                    if line == "" or "lo" in line:
                        continue
                    stuff = line.strip().split()
                    iface = stuff[0]
                    add_to_interfaces(iface)

        elif "aix" in sys.platform:
            if not agent_util.which("netstat"):
                self.log.info("netstat not found")
                status = agent_util.UNSUPPORTED
                msg = "Please install netstat."
                return {}

            # Get the list of network devices
            interfaces = []
            ret, output = agent_util.execute_command(
                "netstat -v | grep 'ETHERNET STATISTICS'"
            )
            output = output.strip().split("\n")
            for line in output:
                fields = line.split()
                try:
                    add_to_interfaces(fields[2].strip("(").strip(")"))
                except:
                    pass

            metadata = {}
            metadata["bandwidth.kbytes.in"] = {
                "label": "Kilobytes IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.kbytes.out"] = {
                "label": "Kilobytes OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.packets.in"] = {
                "label": "Packets IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            metadata["bandwidth.packets.out"] = {
                "label": "Packets OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            return metadata

        elif "sunos" in sys.platform:
            if not agent_util.which("netstat"):
                self.log.info("netstat not found")
                status = agent_util.UNSUPPORTED
                msg = "Please install netstat."
                return {}

            # Get the list of network devices
            interfaces = []
            ret, output = agent_util.execute_command("netstat -i")
            output = output.strip().split("\n")
            for line in output:
                fields = line.split()
                if not fields:
                    continue
                if fields[0] in ("lo", "inet", "ether", "Name"):
                    continue
                try:
                    add_to_interfaces(fields[0])
                except:
                    pass

            metadata = {}
            metadata["bandwidth.kbytes.in"] = {
                "label": "Kilobytes IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.kbytes.out"] = {
                "label": "Kilobytes OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.packets.in"] = {
                "label": "Packets IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            metadata["bandwidth.packets.out"] = {
                "label": "Packets OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            return metadata

        elif "vmware" in sys.platform:
            if not agent_util.which("esxcli"):
                self.log.info("esxcli not found")
                status = agent_util.UNSUPPORTED
                msg = "Please confirm esxcli is installed."
                return {}

            interfaces = []
            ret, out = agent_util.execute_command("esxcli network nic list")
            iface_table = out.split("\n")
            for iface in iface_table:
                # skip the headers, dividers and any empty items
                if iface.startswith("Name") or iface.startswith("--") or iface == "":
                    continue
                add_to_interfaces(iface.split()[0])

            metadata = {}
            metadata["bandwidth.kbytes.in"] = {
                "label": "Kilobytes IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.kbytes.out"] = {
                "label": "Kilobytes OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.packets.in"] = {
                "label": "Packets IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            metadata["bandwidth.packets.out"] = {
                "label": "Packets OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            return metadata

        elif "hp-ux" in sys.platform:
            ret, out = agent_util.execute_command("nwmgr -g")
            iface_table = out.splitlines()
            interfaces = []
            for line in iface_table:
                if not line.lower().startswith("lan"):
                    continue
                iface = line.split()
                if iface[1] != "UP":
                    continue
                add_to_interfaces(iface[0])

            metadata = {}
            metadata["bandwidth.kbytes.in"] = {
                "label": "Kilobytes IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.kbytes.out"] = {
                "label": "Kilobytes OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

            metadata["bandwidth.packets.in"] = {
                "label": "Packets IN per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            metadata["bandwidth.packets.out"] = {
                "label": "Packets OUT per second",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "packets",
            }

            return metadata

        else:
            # Default Linux options
            if not os.path.exists("/proc/net/dev"):
                self.log.info("/proc/net/dev not found")
                status = agent_util.UNSUPPORTED
                msg = "/proc/net/dev not found"
                return {}

            if status is agent_util.SUPPORTED:
                # get the interfaces
                output = open("/proc/net/dev", "r").read()
                output = output.splitlines()
                if config.get("debug", False):
                    self.log.debug(
                        "#####################################################"
                    )
                    self.log.debug("Content of file '/proc/net/dev':")
                    self.log.debug(str(output))
                    self.log.debug(
                        "#####################################################"
                    )

                for line in output[2:]:
                    stuff = line.strip().split()
                    iface, bytes_read = stuff[0].split(":")
                    add_to_interfaces(iface)

        interfaces = list(interfaces)
        interfaces.sort()

        if status is agent_util.SUPPORTED and not interfaces:
            status = agent_util.MISCONFIGURED
            msg = "No network interfaces found."

        metadata = {}
        metadata["bandwidth.kbytes.in"] = {
            "label": "Kilobytes IN per second",
            "options": interfaces,
            "status": status,
            "error_message": msg,
            "unit": "kB",
        }

        metadata["bandwidth.kbytes.out"] = {
            "label": "Kilobytes OUT per second",
            "options": interfaces,
            "status": status,
            "error_message": msg,
            "unit": "kB",
        }

        metadata["bandwidth.packets.in"] = {
            "label": "Packets IN per second",
            "options": interfaces,
            "status": status,
            "error_message": msg,
            "unit": "packets",
        }

        metadata["bandwidth.packets.out"] = {
            "label": "Packets OUT per second",
            "options": interfaces,
            "status": status,
            "error_message": msg,
            "unit": "packets",
        }

        if "freebsd" not in sys.platform and "darwin" not in sys.platform:
            metadata["bandwidth.monthly.in"] = {
                "label": "Kilobytes IN for the month",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }
            metadata["bandwidth.monthly.out"] = {
                "label": "Kilobytes OUT for the month",
                "options": interfaces,
                "status": status,
                "error_message": msg,
                "unit": "kB",
            }

        return metadata

    def check(self, textkey, interface, config):
        interface_found = False

        if "freebsd" in sys.platform:
            ret, output = agent_util.execute_command("netstat -ib")
            lines = output.splitlines()[1:]

            for line in lines:
                if "lo" in line or line == "":
                    continue
                line = line.split()
                (
                    si,
                    mtu,
                    network,
                    addr,
                    packets_read,
                    ierr,
                    idrop,
                    bytes_read,
                    packets_written,
                    oerr,
                    bytes_written,
                    coll,
                ) = line
                packets_read = int(packets_read)
                packets_written = int(packets_written)
                kbytes_read = int(bytes_read) / 1024
                kbytes_written = int(bytes_written) / 1024

                if si == interface and network.startswith("<Link"):
                    interface_found = True
                    break
        elif "darwin" in sys.platform:
            netstat = agent_util.which("netstat")
            ret, output = agent_util.execute_command("%s -ibn" % netstat)
            lines = output.splitlines()[1:]

            for line in lines:
                if "lo" in line or line == "":
                    continue
                line = line.split()
                si = line[0]
                network = line[2]
                packets_read = int(line[-7])
                bytes_read = int(line[-5])
                packets_written = int(line[-4])
                bytes_written = int(line[-2])
                kbytes_read = bytes_read / 1024
                kbytes_written = bytes_written / 1024

                if si == interface and network.startswith("<Link"):
                    interface_found = True
                    break

        elif "aix" in sys.platform:
            ret, output = agent_util.execute_command(
                'netstat -v %s | grep "^Bytes:"' % interface
            )
            fields = output.split()
            kbytes_written = int(fields[1]) / 1024
            kbytes_read = int(fields[3]) / 1024
            ret, output = agent_util.execute_command(
                'netstat -v %s | grep "^Packets:"' % interface
            )
            fields = output.split()
            packets_written = int(fields[1]) / 1024
            packets_read = int(fields[3]) / 1024
            interface_found = True

        elif "sunos" in sys.platform:
            ret, output = agent_util.execute_command("netstat -i")
            for line in output.strip().split("\n"):
                fields = line.strip().split()
                if not fields:
                    continue
                if fields[0] == interface:
                    interface_found = True
                    packets_read = int(fields[4])
                    packets_written = int(fields[6])
            kbytes_read = 0
            kbytes_written = 0
            ret, output = agent_util.execute_command(
                "kstat -n %s 1 2 | egrep 'bytes64' | uniq" % interface
            )
            for line in output.split("\n"):
                if not line:
                    continue
                if "obytes" in line:
                    fields = line.split()
                    kbytes_read = int(fields[1]) / 1024

                elif "rbytes" in line:
                    fields = line.split()
                    kbytes_written = int(fields[1]) / 1024

        elif "vmware" in sys.platform:
            ret, out = agent_util.execute_command(
                "esxcli network nic stats get -n %s" % interface
            )
            if ret == 0:
                interface_found = True
            iface_stats = {}
            fields = out.split("\n")
            for i in fields:
                trans = i.strip().split(":")
                if len(trans) != 2:
                    continue
                iface_stats[trans[0]] = trans[1].strip()

            kbytes_written = int(iface_stats["Bytes sent"]) / 1024
            kbytes_read = int(iface_stats["Bytes received"]) / 1024
            packets_written = int(iface_stats["Packets sent"])
            packets_read = int(iface_stats["Packets received"])

        elif "hp-ux" in sys.platform:
            interface_found = True
            # NOTE, we need to first divide by 8 to get bytes from octets
            # then divide by 1024 to get KB
            ret, out = agent_util.execute_command("nwmgr --st -c %s" % interface)
            nwmgr = out.splitlines()
            iface_stats = {}
            for line in nwmgr:
                if "=" not in line:
                    continue
                l = line.split("=")
                iface_stats[l[0].strip()] = l[1].strip()
            self.log.debug(iface_stats)

            kbytes_read = (float(iface_stats["Inbound Octets"]) / 8) / 1024
            kbytes_written = (float(iface_stats["Outbound Octets"]) / 8) / 1024
            packets_read = total_pkts = (
                float(iface_stats["Inbound Unicast Packets"])
                + float(iface_stats["Inbound Multicast Packets"])
                + float(iface_stats["Inbound Broadcast Packets"])
            )
            packets_written = total_pkts = (
                float(iface_stats["Outbound Unicast Packets"])
                + float(iface_stats["Outbound Multicast Packets"])
                + float(iface_stats["Outbound Broadcast Packets"])
            )

        else:
            output = open("/proc/net/dev", "r").read()

            self.log.debug("/proc/net/dev output: %s" % str(output))

            output = output.splitlines()

            for line in output[2:]:
                stuff = line.strip().split()
                if not stuff[0].endswith(":"):
                    stuff[0], new_insert = stuff[0].split(":")
                    stuff.insert(1, new_insert)
                else:
                    stuff[0] = stuff[0].rstrip(":")

                iface = stuff[0]
                bytes_read = int(stuff[1])
                bytes_written = int(stuff[9])
                kbytes_read = int(bytes_read) / 1024
                kbytes_written = int(stuff[9]) / 1024
                packets_read = int(stuff[2])
                packets_written = int(stuff[10])

                if interface == iface:
                    interface_found = True
                    break

            # Special handling for monthly bandwidth - each time through we bank the
            # difference in the current reading vs. the previous, taking into account
            # cases where we cross a month boundary and when the byte counters wrap
            if textkey.startswith("bandwidth.monthly"):
                if textkey == "bandwidth.monthly.in":
                    current_bytes = bytes_read
                else:
                    current_bytes = bytes_written

                # First get the cached values
                c = self.get_cache_results(textkey + ":current_bytes", interface)
                previous_bytes = c and c[0][1] or current_bytes
                c = self.get_cache_results(textkey + ":banked_bytes", interface)
                banked_bytes = c and c[0][1] or 0
                c = self.get_cache_results(textkey + ":current_month", interface)
                current_month = c and c[0][1] or datetime.now().month
                c = self.get_cache_results(textkey + ":current_year", interface)
                current_year = c and c[0][1] or datetime.now().year

                now = datetime.now()
                if now.year != current_year or now.month != current_month:
                    # If we"ve crossed a month boundary, zero out bank and reset counters
                    banked_bytes = 0
                    current_year = now.year
                    current_month = now.month
                    previous_bytes = current_bytes

                elif current_bytes < previous_bytes:
                    # The OS counters wrapped, need to handle this
                    banked_bytes += current_bytes
                    previous_bytes = current_bytes

                else:
                    # Standard case, just bank the difference between current and last
                    banked_bytes += current_bytes - previous_bytes
                    previous_bytes = current_bytes

                # Cache the new values
                self.cache_result(
                    textkey + ":current_bytes", interface, current_bytes, replace=True
                )
                self.cache_result(
                    textkey + ":banked_bytes", interface, banked_bytes, replace=True
                )
                self.cache_result(
                    textkey + ":current_month", interface, current_month, replace=True
                )
                self.cache_result(
                    textkey + ":current_year", interface, current_year, replace=True
                )

                return banked_bytes / 1024

        # Because of AIX's interface naming convention, every
        # command provides a different interface name, we need to ignore that
        if "aix" in sys.platform:
            pass
        else:
            if not interface_found:
                self.log.warning("interface %s not found!?" % interface)
                return None

        # try to get the old cache
        cache = self.get_cache_results(textkey, interface)

        # cache our result always
        if textkey == "bandwidth.kbytes.in":
            result = kbytes_read
        elif textkey == "bandwidth.kbytes.out":
            result = kbytes_written
        elif textkey == "bandwidth.packets.in":
            result = packets_read
        elif textkey == "bandwidth.packets.out":
            result = packets_written
        else:
            self.log.error("UNKNOWN BANDWIDTH TEXTKEY- %s" % textkey)
        self.cache_result(textkey, interface, result)

        if not cache:
            return 0.0

        delta, cached_result = cache[0]

        self.log.debug("kbytes read: %d" % kbytes_read)
        self.log.debug("kbytes written: %d" % kbytes_written)
        self.log.debug("packets read: %d" % packets_read)
        self.log.debug("packets written: %d" % packets_written)
        new_value = result - cached_result
        if new_value < 0.0:
            self.log.warning(
                "Metric {} current {} less than cached {} - maybe reboot or counter overflow".format(
                    textkey, result, cached_result
                )
            )
            return None

        return new_value / float(delta)

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