Cfengine 3 example unit_remoteclasses.html
########################################################
#
# Remote classes from server connection to cfServer
#
########################################################

 #
 # run this as follows:
 #
 # cf-serverd -f runtest_1.cf [-d2]
 # cf-agent   -f runtest_2.cf
 #
 # Notice that the same file configures all parts of cfengine

########################################################

body common control

{
bundlesequence  => { job_chain("Hr16|Hr17") };

version => "1.2.3";
}

########################################################

bundle common g
{
vars:

 # Signals are in scope of promiser and promisee

 "signal"   string => "pack_a_name";

}

########################################################

bundle agent job_chain(time)

{
vars:

 "client"   string => "localhost";
 "server"   string => "localhost";
 "margin"   string => "5"; # mins deadtime

classes:

   "client_primed" expression => classmatch(canonify("$(client)")),
                   ifvarclass => "$(time)";

   "server_primed" expression => classmatch(canonify("$(server)")),
                   ifvarclass => "$(time)";

 client_primed::

   "succeeded"     expression => remoteclassesmatching("$(g.signal)","$(server)","yes","myprefix");

 #
 # Now the job itself
 #

methods:

 client_primed::

    "downstream" usebundle => do_job("Starting local follow-up job"),
                    action => if_elapsed("$(margin)"),
                ifvarclass => "myprefix_$(g.signal)";

 server_primed::

    "upstream"   usebundle => do_job("Starting remote job"),
                    action => if_elapsed("$(margin)"),
                   classes => signal_repaired("$(g.signal)");

reports:

  !succeeded::

    "Server communication failed",
 
                 ifvarclass => "$(time)";


  "Job completed on the server...",

          ifvarclass => "$(g.signal)";

}

#########################################################

bundle agent do_job(job)
{
commands:

   # do whatever...

   "/bin/echo $(job)";
}


#########################################################
# Server config
#########################################################

body server control 

{
allowconnects         => { "127.0.0.1" , "::1" };
allowallconnects      => { "127.0.0.1" , "::1" };
trustkeysfrom         => { "127.0.0.1" , "::1" };
allowusers            => { "mark" };
}

#########################################################

bundle server access_rules()

{
vars:

  "localvar" string => "literal string";

access:

  "$(g.signal)"

        handle  => "test_class_signal",
  resource_type => "context",
        admit   => { "127.0.0.1" };
}


#########################################################
# Standard library
#########################################################

body action if_elapsed(x)
{
ifelapsed => "$(x)";
}

#########################################################

body classes signal_repaired(x)
{
promise_repaired => { "$(x)" };
persist_time => "10";
}
}