haskell bert implementation
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marius a. eriksen
Oct 28, 2009, 11:03:35 PM10/28/09
to BERT-RPC
hi — i have a preliminary implementation up:
http://github.com/mariusaeriksen/bert
it handles most of BERT/BERP, but not yet
the RPC protocol.
terms are a type, and has a typeclass supporting
conversion, with implementations for common
haskell datatypes already. this is akin to the
haskell JSON library. eg.,
> showBERT ((1.0::Float), 2, False, "hello")
TupleTerm [FloatTerm 1.0,BigbigintTerm 2,BoolTerm False,BytelistTerm
(Chunk "hello" Empty)]
> readBERT $ showBERT ((1.0::Float), 2, False, "hello") :: Either String Term
Right (TupleTerm [FloatTerm 1.0,BigbigintTerm 2,BoolTerm
False,BytelistTerm (Chunk "hello" Empty)])
and supports binary encoding via the Data.Binary
class.
encode $ showBERT ((1.0::Float), 2, False, "hello")
Chunk "\131h\EOTc" (Chunk "1.000000000000000e0\NUL\NUL\NUL\NUL\NUL\NUL
\NUL\NUL\NUL\NUL\NUL\NUL" (Chunk "o\NUL\NUL\NUL\SOH\NUL" (Chunk
"\STX" (Chunk "h\STXd\NUL\EOT" (Chunk "bert" (Chunk "d\NUL\ENQ" (Chunk
"false" (Chunk "k\NUL\ENQ" (Chunk "hello" Empty)))))))))
or a packet:
ghci> encode $ Packet $ showBERT ((1.0::Float), 2, False, "hello")
Chunk "\NUL\NUL\NULC" (Chunk "\131h\EOTc" (Chunk
"1.000000000000000e0\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL
\NUL" (Chunk "o\NUL\NUL\NUL\SOH\NUL" (Chunk "\STX" (Chunk "h\STXd\NUL
\EOT" (Chunk "bert" (Chunk "d\NUL\ENQ" (Chunk "false" (Chunk "k\NUL
\ENQ" (Chunk "hello" Empty))))))))))
http://github.com/mariusaeriksen/bert
it handles most of BERT/BERP, but not yet
the RPC protocol.
terms are a type, and has a typeclass supporting
conversion, with implementations for common
haskell datatypes already. this is akin to the
haskell JSON library. eg.,
> showBERT ((1.0::Float), 2, False, "hello")
TupleTerm [FloatTerm 1.0,BigbigintTerm 2,BoolTerm False,BytelistTerm
(Chunk "hello" Empty)]
> readBERT $ showBERT ((1.0::Float), 2, False, "hello") :: Either String Term
Right (TupleTerm [FloatTerm 1.0,BigbigintTerm 2,BoolTerm
False,BytelistTerm (Chunk "hello" Empty)])
and supports binary encoding via the Data.Binary
class.
encode $ showBERT ((1.0::Float), 2, False, "hello")
Chunk "\131h\EOTc" (Chunk "1.000000000000000e0\NUL\NUL\NUL\NUL\NUL\NUL
\NUL\NUL\NUL\NUL\NUL\NUL" (Chunk "o\NUL\NUL\NUL\SOH\NUL" (Chunk
"\STX" (Chunk "h\STXd\NUL\EOT" (Chunk "bert" (Chunk "d\NUL\ENQ" (Chunk
"false" (Chunk "k\NUL\ENQ" (Chunk "hello" Empty)))))))))
or a packet:
ghci> encode $ Packet $ showBERT ((1.0::Float), 2, False, "hello")
Chunk "\NUL\NUL\NULC" (Chunk "\131h\EOTc" (Chunk
"1.000000000000000e0\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL
\NUL" (Chunk "o\NUL\NUL\NUL\SOH\NUL" (Chunk "\STX" (Chunk "h\STXd\NUL
\EOT" (Chunk "bert" (Chunk "d\NUL\ENQ" (Chunk "false" (Chunk "k\NUL
\ENQ" (Chunk "hello" Empty))))))))))
marius a. eriksen
Oct 28, 2009, 11:07:44 PM10/28/09
to BERT-RPC
On Oct 28, 8:03 pm, "marius a. eriksen" <marius.erik...@gmail.com>
wrote:
> readBERT $ showBERT ((1.0::Float), 2, False, "hello") :: Either String (Float, Integer, Bool, String)
Right (1.0,2,False,"hello")
marius.
wrote:
>> readBERT $ showBERT ((1.0::Float), 2, False, "hello") :: Either String Term
err, rather.
> readBERT $ showBERT ((1.0::Float), 2, False, "hello") :: Either String (Float, Integer, Bool, String)
Right (1.0,2,False,"hello")
marius.
Tom Preston-Werner
Oct 29, 2009, 1:56:41 PM10/29/09
to BERT-RPC
> hi — i have a preliminary implementation up:
>
> http://github.com/mariusaeriksen/bert
>
> it handles most of BERT/BERP, but not yet
> the RPC protocol.
This is awesome! I've added it to the list of implementations at
>
> http://github.com/mariusaeriksen/bert
>
> it handles most of BERT/BERP, but not yet
> the RPC protocol.
http://bert-rpc.org. I'm excited to see how this project progresses.
Tom
marius a. eriksen
Nov 1, 2009, 5:43:35 PM11/1/09
to BERT-RPC
the library now has BERT-RPC client and server
support (synchronous only for now). as well as
some meaningful documentation.
http://github.com/mariusaeriksen/bert
i've tested it against ernie (and also with itself of
course) and it seems to work well.
caching is also not yet supported. what is the best
practice for dealing with unsupported actions?
caching is simple — the server and client can simply
ignore cache directives. for both streaming and
asynchronous requests i'm currently replying with
server error 0.
marius.
On Oct 29, 9:56 am, Tom Preston-Werner <mojo...@gmail.com> wrote:
> On Oct 28, 8:03 pm, "marius a. eriksen" <marius.erik...@gmail.com>
> wrote:
>
> > hi — i have a preliminary implementation up:
>
> > http://github.com/mariusaeriksen/bert
>
> > it handles most of BERT/BERP, but not yet
> > the RPC protocol.
>
> This is awesome! I've added it to the list of implementations athttp://bert-rpc.org. I'm excited to see how this project progresses.
>
> Tom
support (synchronous only for now). as well as
some meaningful documentation.
http://github.com/mariusaeriksen/bert
i've tested it against ernie (and also with itself of
course) and it seems to work well.
caching is also not yet supported. what is the best
practice for dealing with unsupported actions?
caching is simple — the server and client can simply
ignore cache directives. for both streaming and
asynchronous requests i'm currently replying with
server error 0.
marius.
On Oct 29, 9:56 am, Tom Preston-Werner <mojo...@gmail.com> wrote:
> On Oct 28, 8:03 pm, "marius a. eriksen" <marius.erik...@gmail.com>
> wrote:
>
> > hi — i have a preliminary implementation up:
>
> > http://github.com/mariusaeriksen/bert
>
> > it handles most of BERT/BERP, but not yet
> > the RPC protocol.
>
>
> Tom
Woo-Kyoung Noh
Nov 3, 2009, 6:19:01 AM11/3/09
to BERT-RPC
marius a. eriksen
Nov 4, 2009, 2:50:23 AM11/4/09
to BERT-RPC
and i've uploaded it to hackage now:
http://hackage.haskell.org/package/bert
so if you have haskell installed, it's a simple
$ cabal install bert
and you're set!
i also wrote a small erlang-syntax BERT term parser (it can parse any
BERT compatible erlang term in erlang syntax), and a little tool to
make calls which is probably useful to anyone playing with BERT. this
is included in the aforementioned cabal package.
(using tom's example calc.rb with ernie):
$ bert call bert://localhost:8000 calc add 123 456
reply: 579
$ bert call bert://localhost:8000 errorcalc add 123 456
error: ServerError {error, {user, 0, <<"RuntimeError">>,
<<"abandon hope!">>, [<<"/Users/marius/Loc..
$ bert call bert://localhost:8000 calc add "{1, test, [5,6,7]}" 456
error: ServerError {error, {user, 0, <<"TypeError">>,
<<"can't convert Fixnum into Array">>, ..
you get the idea.
marius.
On Nov 1, 2:43 pm, "marius a. eriksen" <marius.erik...@gmail.com>
http://hackage.haskell.org/package/bert
so if you have haskell installed, it's a simple
$ cabal install bert
and you're set!
i also wrote a small erlang-syntax BERT term parser (it can parse any
BERT compatible erlang term in erlang syntax), and a little tool to
make calls which is probably useful to anyone playing with BERT. this
is included in the aforementioned cabal package.
(using tom's example calc.rb with ernie):
$ bert call bert://localhost:8000 calc add 123 456
reply: 579
$ bert call bert://localhost:8000 errorcalc add 123 456
error: ServerError {error, {user, 0, <<"RuntimeError">>,
<<"abandon hope!">>, [<<"/Users/marius/Loc..
$ bert call bert://localhost:8000 calc add "{1, test, [5,6,7]}" 456
error: ServerError {error, {user, 0, <<"TypeError">>,
<<"can't convert Fixnum into Array">>, ..
you get the idea.
marius.
On Nov 1, 2:43 pm, "marius a. eriksen" <marius.erik...@gmail.com>
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