COREのCustom Serviceを使ってみる

custom_services_dir = /home/hetare/.core/myservices

"""
HogeHoge user-defined service.
"""

from core.misc.ipaddress import Ipv4Prefix
from core.misc.ipaddress import Ipv6Prefix
from core.service import CoreService
from core.service import ServiceManager


class HogeHoge(CoreService):
    """
    This is a sample user-defined service.
    """
    # a unique name is required, without spaces
    _name = "HogeHoge"
    # you can create your own group here
    _group = "Utility"
    # list of other services this service depends on
    _depends = ()
    # per-node directories
    _dirs = ("/tmp/hogehoge/",)
    # generated files (without a full path this file goes in the node's dir,
    #  e.g. /tmp/pycore.12345/n1.conf/)
    _configs = ('hoge.sh',)
    # this controls the starting order vs other enabled services
    _startindex = 50
    # list of startup commands, also may be generated during startup
    _startup = ('sh hoge.sh',)
    # list of shutdown commands
    _shutdown = ()

    @classmethod
    def generateconfig(cls, node, filename, services):
        """
        Return a string that will be written to filename, or sent to the
        GUI for user customization.
        """
        cfg = "#!/bin/sh\n"
        cfg += "# auto-generated by HogeHoge (hogehoge.py)\n"

        for ifc in node.netifs():
            cfg += 'echo "Node %s has interface %s"\n' % (node.name, ifc.name)
            # here we do something interesting
            cfg += "\n".join(map(cls.subnetentry, ifc.addrlist))
            break
        return cfg

    @staticmethod
    def subnetentry(x):
        """
        Generate a subnet declaration block given an IPv4 prefix string
        for inclusion in the config file.
        """
        if x.find(":") >= 0:
            net = Ipv6Prefix(x)
            return 'echo "  network %s" > prefix.txt' % net
        else:
            net = Ipv4Prefix(x)
            return 'echo "  network %s" > prefix.txt' % net

# this is needed to load desired services when being integrated into core, otherwise this is not needed
def load_services():
    # this line is required to add the above class to the list of available services
    ServiceManager.add(HogeHoge)

"""myservices

Custom services that you define can be put in this directory.  Everything
listed in __all__ is automatically loaded when you add this directory to the
custom_services_dir = '/full/path/to/here' core.conf file option.
"""
__all__ = ["sample", "hogehoge"]

$ sudo systemctl restart core-daemon