Raising my own exceptions with DRb

[Reto Schuettel]

Hi

I'm looking for a way to raise my own exceptions over drb. It's no
problem to raise the usual/standard exceptions like ArgumentError etc.

I tried to define the Exceptions in the client and I tried to include
the DRb:RbUndumped within the Exception class, nothing worked... the
client just throws a DRb:RbConnError exception.

Can anybody help with this problem? I've attached small examples for the
server and the client...

Thanks!
reto

Server:

require 'drb/drb'

URI = "drbunix:/tmp/ruby.socket"

class Thing
include DRb:RbUndumped

def normal_exception
raise "aaah"
end

def own_exception
raise MyException
end

class MyException < Exception
# I tried to use DRb:RbUndumped on the Exception class.. didn't work
# include DRb:RbUndumped
end
end

class Srv
def get_thing
@t = Thing.new
end
end

srv = Srv.new()

#$SAFE = 1 # disable eval() and friends

DRb.start_service(URI, srv, {:verbose => true})
DRb.thread.join


Client:

require 'drb/drb'
class Thing
class MyException < Exception
end
end

uri = "drbunix:/tmp/ruby.socket"
DRb.start_service

c = DRbObject.new_with_uri(uri)

t = c.get_thing

begin
t.normal_exception
rescue RuntimeError => e
puts "Caught a RuntimeError: " + e.inspect
end

begin
t.own_exception
rescue Thing::MyException => e
puts "Caught a Thing::MyException: " + e.inspect
end

 

[Eric Hodel]

Hi

I'm looking for a way to raise my own exceptions over drb. It's no
problem to raise the usual/standard exceptions like ArgumentError etc.

I tried to define the Exceptions in the client and I tried to include
the DRb:RbUndumped within the Exception class, nothing worked... the
client just throws a DRb:RbConnError exception.

Can anybody help with this problem? I've attached small examples
for the
server and the client...

Thanks!
reto

Server:

require 'drb/drb'

URI = "drbunix:/tmp/ruby.socket"

class Thing
include DRb:RbUndumped

def normal_exception
raise "aaah"
end

def own_exception
raise MyException
end

class MyException < Exception

^^^^^^^^^

You don't usually want to inherit exceptions from Exception. If you
change this to RuntimeError, it works.

# I tried to use DRb:RbUndumped on the Exception class..
didn't work
# include DRb:RbUndumped
end
end

class Srv
def get_thing
@t = Thing.new
end
end

srv = Srv.new()

#$SAFE = 1 # disable eval() and friends

DRb.start_service(URI, srv, {:verbose => true})
DRb.thread.join


Client:

require 'drb/drb'
class Thing
class MyException < Exception

Same here.