We're working on something with 0MQ, if you (or anyone else reading) go
that route and want to compare notes, hit me off-list.
On Apr 8, 2015 8:01 AM, <haskell-cafe-request at haskell.org> wrote:
> Send Haskell-Cafe mailing list submissions to
> haskell-cafe at haskell.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> or, via email, send a message with subject or body 'help' to
> haskell-cafe-request at haskell.org
>
> You can reach the person managing the list at
> haskell-cafe-owner at haskell.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Haskell-Cafe digest..."
>
>
> Today's Topics:
>
> 1. Distributed and persistent events bus in Haskell (Arnaud Bailly)
> 2. Re: Distributed and persistent events bus in Haskell
> (Kyle Marek-Spartz)
> 3. Re: Distributed and persistent events bus in Haskell
> (Arnaud Bailly)
> 4. Re: MinGHC for GHC 7.10.1 available (Aaron Contorer)
> 5. status of deb.haskell.org? (Jeremy)
> 6. help w/ improving custom Stream for parsec (Maurizio Vitale)
> 7. Anyone interested in taking over network-uri? (Johan Tibell)
> 8. Re: Anyone interested in taking over network-uri? (Alexey Shmalko)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 7 Apr 2015 16:50:49 +0200
> From: Arnaud Bailly <arnaud.oqube at gmail.com>
> To: Haskell Cafe <haskell-cafe at haskell.org>
> Subject: [Haskell-cafe] Distributed and persistent events bus in
> Haskell
> Message-ID:
> <
> CAL4zPaqpKXdOibD3_HECt+0V0ZniH0kKpA_ESQ30P7g9Ly_5cg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello,
>
> I am implementing an application using event sourcing as primary storage
> for data, which implies I need a way to durably and reliably store streams
> of events on stable storage. I also need to be able to have an event
> distribution system on top of that persistent storage so that components
> can subscribe to stored events.
>
> So far I have implemented a simple store, e.g. a flat file, which reuses
> the format of Apache Kafka (just in case...). Not very robust nor
> sophisticated but can work for moderate loads. Now I am looking for the
> event distribution part in the hope of being able to reuse some distributed
> event bus system that might exist somewhere and not having to roll my own.
>
> I have had a look couple of months ago at Vaultaire, Marquise and friends,
> but I am not sure they are really suited to my use case: They seem to be
> geared toward very high workload and throughput, like log or huge data
> streams analysis.
>
> Thanks for any pointer you might share,
> --
> Arnaud Bailly
>
> twitter: abailly
> skype: arnaud-bailly
> linkedin: http://fr.linkedin.com/in/arnaudbailly/
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150407/ee65ca06/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 2
> Date: Tue, 07 Apr 2015 10:26:26 -0500
> From: Kyle Marek-Spartz <kyle.marek.spartz at gmail.com>
> To: Arnaud Bailly <arnaud.oqube at gmail.com>
> Cc: Haskell Cafe <haskell-cafe at haskell.org>
> Subject: Re: [Haskell-cafe] Distributed and persistent events bus in
> Haskell
> Message-ID: <2fcp3s8ue4kli5.fsf at gmail.com>
> Content-Type: text/plain
>
> If you do end up going with the Kafka route, there is a native Haskell
> client:
>
> https://github.com/tylerholien/milena
>
>
>
> Arnaud Bailly writes:
>
> > Hello,
> >
> > I am implementing an application using event sourcing as primary storage
> > for data, which implies I need a way to durably and reliably store
> streams
> > of events on stable storage. I also need to be able to have an event
> > distribution system on top of that persistent storage so that components
> > can subscribe to stored events.
> >
> > So far I have implemented a simple store, e.g. a flat file, which reuses
> > the format of Apache Kafka (just in case...). Not very robust nor
> > sophisticated but can work for moderate loads. Now I am looking for the
> > event distribution part in the hope of being able to reuse some
> distributed
> > event bus system that might exist somewhere and not having to roll my
> own.
> >
> > I have had a look couple of months ago at Vaultaire, Marquise and
> friends,
> > but I am not sure they are really suited to my use case: They seem to be
> > geared toward very high workload and throughput, like log or huge data
> > streams analysis.
> >
> > Thanks for any pointer you might share,
>
> --
> Kyle Marek-Spartz
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 7 Apr 2015 17:33:01 +0200
> From: Arnaud Bailly <arnaud.oqube at gmail.com>
> To: Kyle Marek-Spartz <kyle.marek.spartz at gmail.com>
> Cc: Haskell Cafe <haskell-cafe at haskell.org>
> Subject: Re: [Haskell-cafe] Distributed and persistent events bus in
> Haskell
> Message-ID:
> <CAL4zPaoAoBBxAF2hZ_fTOFuKgavt2D5V=
> C4QhsTAe+OokdOr2g at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Cool! however, I would rather avoid having to manage kafka, if something
> simpler exists :-)
>
> I know there is also a mature zeromq client so given I already have the
> persistent part, I could probably leverage that but I thought somebody
> might have already treaded that path...
>
> Thanks a lot for the pointer, anyway.
>
> --
> Arnaud Bailly
>
> twitter: abailly
> skype: arnaud-bailly
> linkedin: http://fr.linkedin.com/in/arnaudbailly/
>
> On Tue, Apr 7, 2015 at 5:26 PM, Kyle Marek-Spartz <
> kyle.marek.spartz at gmail.com> wrote:
>
> > If you do end up going with the Kafka route, there is a native Haskell
> > client:
> >
> > https://github.com/tylerholien/milena
> >
> >
> >
> > Arnaud Bailly writes:
> >
> > > Hello,
> > >
> > > I am implementing an application using event sourcing as primary
> storage
> > > for data, which implies I need a way to durably and reliably store
> > streams
> > > of events on stable storage. I also need to be able to have an event
> > > distribution system on top of that persistent storage so that
> components
> > > can subscribe to stored events.
> > >
> > > So far I have implemented a simple store, e.g. a flat file, which
> reuses
> > > the format of Apache Kafka (just in case...). Not very robust nor
> > > sophisticated but can work for moderate loads. Now I am looking for the
> > > event distribution part in the hope of being able to reuse some
> > distributed
> > > event bus system that might exist somewhere and not having to roll my
> > own.
> > >
> > > I have had a look couple of months ago at Vaultaire, Marquise and
> > friends,
> > > but I am not sure they are really suited to my use case: They seem to
> be
> > > geared toward very high workload and throughput, like log or huge data
> > > streams analysis.
> > >
> > > Thanks for any pointer you might share,
> >
> > --
> > Kyle Marek-Spartz
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150407/570a7fb2/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 4
> Date: Tue, 7 Apr 2015 08:51:18 -0700 (PDT)
> From: Aaron Contorer <aaron at fpcomplete.com>
> To: commercialhaskell at googlegroups.com
> Cc: stackage at googlegroups.com, haskell-cafe at haskell.org
> Subject: Re: [Haskell-cafe] MinGHC for GHC 7.10.1 available
> Message-ID: <e7708d6a-9520-49ca-95c5-c96fea3c4429 at googlegroups.com>
> Content-Type: text/plain; charset="utf-8"
>
> For those who don't know, MinGHC is a minimal installer of GHC for Windows,
> including GHC, cabal-install, and MSYS. Further discussion on this
> announcement is available
> at http://www.reddit.com/r/haskell/comments/30h52i/minghc_for_ghc_710/ and
> a short blog post with a bit more info is
> at https://www.fpcomplete.com/blog/2015/03/minghc-ghc-7-10 .
>
> On Friday, March 27, 2015 at 2:01:27 AM UTC-7, Michael Snoyman wrote:
> >
> > I've just uploaded a new release of MinGHC, including GHC 7.10.1 and
> > cabal-install 1.22.2.0. This release can be downloaded from:
> >
> >
> >
> https://s3.amazonaws.com/download.fpcomplete.com/minghc/minghc-7.10.1-i386.exe
> >
> > In the process, I also needed to upload a cabal-install binary for
> > Windows, which is available at:
> >
> >
> >
> https://s3.amazonaws.com/download.fpcomplete.com/minghc/cabal-install-1.22.2.0-i386-unknown-mingw32.tar.gz
> >
> > I've tested this distribution, but only lightly. Feedback from others
> > would be useful :)
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150407/66bc0517/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 5
> Date: Tue, 7 Apr 2015 09:15:17 -0700 (MST)
> From: Jeremy <voldermort at hotmail.com>
> To: haskell-cafe at haskell.org
> Subject: [Haskell-cafe] status of deb.haskell.org?
> Message-ID: <1428423317104-5768430.post at n5.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
> The haskell status page says that deb.haskell.org has been down since
> mid-February. Are there any plans to bring it back up?
>
>
>
> --
> View this message in context:
> http://haskell.1045720.n5.nabble.com/status-of-deb-haskell-org-tp5768430.html
> Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.
>
>
> ------------------------------
>
> Message: 6
> Date: Tue, 7 Apr 2015 12:25:12 -0400
> From: Maurizio Vitale <mrz.vtl at gmail.com>
> To: Haskell Cafe <Haskell-Cafe at haskell.org>
> Subject: [Haskell-cafe] help w/ improving custom Stream for parsec
> Message-ID:
> <CAAeLbQKR+EHDtAke84sDX=44NMGXHWnWNq_zmxhU=
> LZ+GD7sCQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> I need a custom stream that supports insertion of include files and
> expansions of macros.
> I also want to be able to give nice error messages (think of clang
> macro-expansion backtrace), so I cannot use the standard trick of
> concatenating included files and expanded macros to the current input with
> setInput/getInput (I think I can't maybe there's a way of keeping a more
> complex "position" and since the use in producing an error backtrac is
> rare, it migth be worth exploring; if anybody has ideas here, I'm
> listening)
>
> Assuming I need a more compelx stream, this is what I have (Macro and File
> both have a string argument, but it will be more compicated, a list of
> expansions for Macro for instance).
>
> Is there a better way for doing this?
> What are the performance implications with backtracking? I'll be
> benchmarking it, but if people see obvious problems, let me know.
>
> Thanks a lot,
> Maurizio
>
> {-# LANGUAGE FlexibleInstances #-}
> {-# LANGUAGE FlexibleContexts #-}
> {-# LANGUAGE InstanceSigs #-}
> {-# LANGUAGE MultiParamTypeClasses #-}
>
> module Parsing where
>
> import Text.Parsec
>
> type Parser s m = ParsecT s () m
>
> data VStream = File String | Macro String deriving Show
>
> newtype StreamStack = StreamStack [VStream] deriving Show
>
> instance (Monad m) ? Stream VStream m Char where
> uncons ? VStream -> m (Maybe (Char, VStream))
> uncons (File (a:as)) = return $ Just (a, File as)
> uncons (File []) = return Nothing
> uncons (Macro (a:as)) = return $ Just (a, File as)
> uncons (Macro []) = return Nothing
>
>
>
> instance (Monad m) => Stream StreamStack m Char where
> uncons (StreamStack []) = return Nothing
> uncons (StreamStack (s:ss)) =
> case uncons s of
> Nothing ? uncons $ StreamStack ss
> Just Nothing ? uncons $ StreamStack ss
> Just (Just (c, File s')) ? return $ Just (c, StreamStack (File s':
> ss))
> Just (Just (c, Macro s')) ? return $ Just (c, StreamStack (Macro
> s':ss))
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150407/3e28a995/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 7
> Date: Tue, 7 Apr 2015 23:18:35 +0200
> From: Johan Tibell <johan.tibell at gmail.com>
> To: haskell-cafe <haskell-cafe at haskell.org>
> Subject: [Haskell-cafe] Anyone interested in taking over network-uri?
> Message-ID:
> <
> CAK-tuPb_TSgj0Sw9t5wFLHsmygGCu31Q3Py2-wCowXSMc0QRCQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi!
>
> I find myself with less time to hack lately and I'm trying to reduce the
> number of libraries I maintain so I can invest time in new things. Would
> anyone be interested taking over maintenance of network-uri?
>
> It should not be much work at all. Bump a few dependencies and fix a bug or
> two. The package is very widely used so I suggest that the new maintainer
> should avoid breaking changes whenever possible*.
>
> * In other words, if you want to completely rethink network URI handling,
> this package is probably not the place for it.
>
> -- Johan
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150407/da29f7b3/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 8
> Date: Wed, 8 Apr 2015 12:38:57 +0300
> From: Alexey Shmalko <rasen.dubi at gmail.com>
> To: Johan Tibell <johan.tibell at gmail.com>
> Cc: haskell-cafe <haskell-cafe at haskell.org>
> Subject: Re: [Haskell-cafe] Anyone interested in taking over
> network-uri?
> Message-ID:
> <CAFC2PC4=
> cVyzY4m9apDB3Xa8SYO3Zv2o_hVT4SRBO_5ASbvZng at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi, Johan,
>
> I have a little spare time and would be interested in taking over
> maintenance of network-uri.
>
> However I'm not sure if I'm a right person for that. I've never maintained
> any haskell package before, but would be glad to. I'm experienced with
> maintenance issues applied to C/C++ but not Haskell. However, I'm sure they
> are pretty much the same.
>
> I looked through github issues; as far as I understand, the maintainer's
> responsibilities are tracking things work fine with newer versions of
> dependencies, fixing bugs that doesn't break source-level compatibility and
> rejecting other proposals. I believe I would handle this.
>
> Regards,
> Alexey
>
>
> On Wed, Apr 8, 2015 at 12:18 AM, Johan Tibell <johan.tibell at gmail.com>
> wrote:
>
> > Hi!
> >
> > I find myself with less time to hack lately and I'm trying to reduce the
> > number of libraries I maintain so I can invest time in new things. Would
> > anyone be interested taking over maintenance of network-uri?
> >
> > It should not be much work at all. Bump a few dependencies and fix a bug
> > or two. The package is very widely used so I suggest that the new
> > maintainer should avoid breaking changes whenever possible*.
> >
> > * In other words, if you want to completely rethink network URI handling,
> > this package is probably not the place for it.
> >
> > -- Johan
> >
> >
> > _______________________________________________
> > Haskell-Cafe mailing list
> > Haskell-Cafe at haskell.org
> > http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
> >
> >
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150408/9b32ff13/attachment-0001.html
> >
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> Haskell-Cafe mailing list
> Haskell-Cafe at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
>
>
> ------------------------------
>
> End of Haskell-Cafe Digest, Vol 140, Issue 9
> ********************************************
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/haskell-cafe/attachments/20150408/0e0963d4/attachment.html>