Rewrote host tags with decorators.

import psutil

from ccnode.tags import ttl, refresh

@ttl(3600 * 24)  # one day

@refresh(5)

def h():

    """Hostname tag."""

    return getfqdn()

h.ttl = 3600 * 24  # one day

h.refresh = 5

# CPU related tags

        return None

@ttl(10)

@refresh(2)

def cpuuse():

    """CPU usage in percentage."""

    return u'%.1f' % psutil.cpu_percent()

cpuuse.ttl = 10

cpuuse.refresh = 2

# memory related tags

def mem():

    """Total physical memory available on system."""

    return unicode(psutil.avail_phymem() + psutil.used_phymem())

mem.ttl = -1  # FIXME validate ttl

@ttl(5)

@refresh(10)

def memfree():

    """Available physical memory on system."""

    return unicode(psutil.avail_phymem())

memfree.ttl = 5

memfree.refresh = 10

@ttl(5)

@refresh(10)

def memused():

    """Used physical memory on system."""

    return unicode(psutil.used_phymem())

memused.ttl = 5

memused.refresh = 10

# disks related tags

    return u' '.join(os_.uname()) or None

@ttl(5)

@refresh(5)

def uptime():

    """Uptime of the system in seconds."""

    return open('/proc/uptime').read().split()[0].split(u'.')[0] or None

uptime.ttl = 5

uptime.refresh = 5

@ttl(5)

@refresh(5)

def load():

    """Average of the number of processes in the run queue over the last 1, 5

    and 15 minutes."""

    except OSError:

        pass

    return load_

load.ttl = 5

load.refresh = 5