Revision history for AnyEvent::MP

TODO: testsuite
TODO: intro: maybe simple job pool example? TODO: intro: mention watchdog...

faq: can't se anything
faq: all is asynch
faq: how to interface to non-perl nodes?

TODO: maybe disbale warnings by default? TODO: lese sadrak mails

1.29 Fri May 7 20:13:39 CEST 2010

• codename "Sadrak".
• fix error in callback at AnyEvent/MP/Global.pm line 339 (found by Sadrak).
• listener-less nodes had trouble sending keepalive messages on write timeouts (found by Sadrak).
• the monitor guard could cause a memleak due to autovivification if a mon was cleared after the port was gone (analysed by Sadrak).
• do not overwrite the config file if we couldn't read it for some reason (lesson demonstrated by Sadrak).

1.28 Thu Apr 1 21:23:54 CEST 2010

• accepted connections didn't correctly set up the SRCNODE in some cases, leading to intra-node messages (such as monitoring) to fail silently (great testcase by Sadrak).

1.27 Sat Mar 20 21:11:16 CET 2010

• avoid exceptions in the transport code if the connection fails during TLS negotiation.
• delay new address broadcasts in seednodes, to reduce the likelyhood of nodes connecting at the same time, leading to message loss.
• improve general message passing efficiency by 8%, and special case json framing for a 50% speed increase.
• add hints how to interface to aemp nodes from other programming languages using the aemp protocol in AnyEvent::MP::Transport (it can really be quite simple).
• handle unsupported remote framings more gracefully.

1.26 Wed Dec 30 16:48:37 CET 2009

• INCOMPATIBLE CHANGE: the high-level node protocol changed, all nodes need to upgrade.
• remote kil's did not work (reported by Eugene Grigoriev).
• documented monitor_timeout, connect_interval, auth_offer, auth_accept, framing_format, autocork and nodelay options and make them configurable via bin/aemp.
• some doc updates.
• remote kil's were not synchronous to message sends which affected nobody, as remote kils were broken.
• remote mon/unmonitor requests were not synchronous to message sends either sometimes, although it likely didnt matter.

1.24 Wed Dec 9 14:59:52 CET 2009

• codename "the foul egg".
• increased "unmonitored local port died" message level to 2, so it is displayed by default now.
• generate random seed at configure time, not module loading time, so fork&configure works as expected.
• decreased "seed"-related message priority in Global from 0 (d'oh) to 9, as they are not signifcant.
• new experimental module AnyEvent::MP::DataConn to establish additional data connections between nodes.
• bin/aemp now loads AnyEvent::Watchdog::Util before trying to call restart.
• bin/aemp setcert didn't properly handle the filename argument.
• removed empty and unused timeout= parameter from protocol greeting.

1.23 Fri Nov 6 18:46:26 CET 2009

• listener-less nodes were misinformed by their masters about the location of new nodes, and therefore didn't connect properly in all cases.
• messages send during node-up processing could sometimes get lost, which would hamper global's ability to mesh the network.
• fixed AnyEvent::MP::Global::grp_reg to return a guard also in scalar context.
• fixed AnyEvent::MP::Kernel::mon_nodes to return a guard also in scalar context.
• try to improve error reporting when automatically loading a function - being unable to load a module will now stop the process and report the error.

1.22 Sat Oct 17 03:41:47 CEST 2009

• fix two rcv-bugs: after adding a tagged rcv, the default callback would not be used or changed anymore (reported by Felix Antonius Wilhelm Ostmann, with apologies for taking so long to releae the fix).
• added Coro::MP introduction to AnyEvent::MP::Intro.
• add peval function.

1.21 Mon Oct 5 21:58:36 CEST 2009

• always delay kil messages.
• remote monitor requests were never cleaned up (found by Sadrak and analysed by elmex).
• move $VERSION to AnyEvent::MP and AnyEvent::MP only.

1.2 Thu Oct 1 22:59:35 CEST 2009

• fix a rather big bug where message processing could be inhibited completely.
• grp_mon could not return a guard due to a typo.
• implement primitive aemp shell.
• do not use bound address as listen length (reported by Felix Antonius Wilhelm Ostman).
• no longer export an undefined "reg" function from AE::MP.
• the mon_guard return value no longer keeps an additional reference to the passed refs.

1.1 Fri Sep 11 04:34:03 CEST 2009

• bumped the transport protocol to version 1 - sorry, but there were too many bugfixes/changes.
• new function AnyEvent::MP::cal for simple rpc.
• renamed AnyEvent::MP::Global functions to grp_reg|get|mon.
• implemented monitoring for Global groups.
• removed all userspace time-outs from the transport, instead rely on tcp retransmit timeouts and tcp keepalive.
• spawn now delays spawns on the local node artificially, so it can return before invoking the init function.
• break endless recursion between ping-pong ports on the local node after ~50 iterations.
• support JSON-encoded aemp arguments.
• added aemp restart.
• support for starting init functions with parameters added.
• data_format, auth_offer and auth_accept are now configurable, albeit not documented.
• new service: AnyEvent::MP::LogCatcher.
• rely on perl srand'ing better than we could.
• try to backport to 5.8.2, unfortunately, recursive dependencies rely on Module::Build, which fails at 5.8.7, so YMMV.
• use a vastly different reseeding strategy.
• use seed nodes to notify nodes about new nodes.
• in the case where a ndoe learns new addresses after it tried connecting, prefer the new addrseses over the old ones.

1.0 Wed Sep 2 20:40:43 CEST 2009

• randomise more connection times, but reduce delay to 0.2s (seeds) and 0.05s (normal connects).
• upgrade to and require AnyEvent::Watchdog 1.0.

0.95 Mon Aug 31 22:03:55 CEST 2009

• tutorial finally covers all the basics, maybe not optimally, but it is covered.
• rename initialise_node to configure and accepts key => value pairs for configuration.
• give aemp a full manpage.
• bin/aemp now expects comma-separated lists and supports multiple subcommands.
• new aemp eval subcommand.
• new aemp parent subcommand.
• nodes get freed when no longer needed.
• support "" hostname to specify all local interface addresses (without localhost etc.).
• support "" port to specify a dynamically-assigned port (which is the default now).
• fix per-transport memory leak.

0.9 Sat Aug 29 18:47:45 CEST 2009

• tutorial was updated to reflect the current API, but does not touch monitoring yet.
• got rid of noderefs and slave nodes entirely, introduce free-text node identifiers and anonymous nodes.
• document security issues with tls_anon method and introduce optional tls_md6_64_256 method.

0.8 Wed Aug 19 07:54:50 CEST 2009

• added AnyEvent::MP::Global service.
• support "package::" names as service names.
• many, many, many bugfixes and tweaks.

0.7 Sat Aug 15 01:18:51 CEST 2009

• sorry, another major API simplification.
• greatly improved aemp configuration abilities.
• introduced profile management.
• updated exmaples in eg/.
• added Kernel::snd_to_func.

0.6 Thu Aug 13 03:15:05 CEST 2009

• do away with .aemp-secret and use .perl-anyevent-mp as json config file.
• introduce bin/aemp to configure nodes.
• too many changes to describe.

0.4 Sun Aug 9 18:05:49 CEST 2009

• API should now be really stable :)
• distinguish between resolved and unresolved noderefs.
• certificates in .aemp-secret are now supported.
• change port creation semantics.
• replace become_xxx by initialise_node.
• implement AE::MP::spawn.
• implement transport timeouts, monitoring, reconnecting.
• simplify and partially document the transport protocol.

0.1 Tue Aug 4 23:07:11 CEST 2009

• AnyEvent::MP API should be mostly stable by now.

0.02 Sun Aug 2 17:46:43 CEST 2009

• design has stabilised a bit, sitll unusable.

0.01 Sat Aug 1 11:43:31 CEST 2009

• dummy upload to reserve namespace on CPAN.

0.0 Thu Jul 30 06:10:15 CEST 2009

• original version, an AnyEvent::AIO clone.