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Subject: Re: [PROPOSAL] Allow rewrites to be JS function
From: Jan Lehnardt <jan@apache.org>
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Date: Sat, 17 Oct 2015 21:23:51 +0200
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To: dev@couchdb.apache.org

Not to rain on your parade, but 2.0 is in feature freeze, this will have =
to wait for 2.1., but there is no reason that can=E2=80=99t happen =
shortly after 2.0 :)

Good work everyone!

Best
Jan
--

> On 17 Oct 2015, at 21:20, Harald Kisch <haraldkisch@gmail.com> wrote:
>=20
> Johs, thank you for testing the amazing features unlocked by ermouth.
> Now it would be great to monk this up to the release of CouchDB 2.0.
> This new feature sets are a great cntribution for the community and =
all
> couchappers.
> I am very excited about the outcome of ermouth's work. He saw it, =
figured
> it out what to do, and did it.
> Thank you for this ermouth.
> +100
>=20
> On Sat, Oct 17, 2015 at 4:45 PM, Johs Ensby <johs@b2w.com> wrote:
>=20
>> Thanks for your efforts, ermouth
>>=20
>> I have been playing with it using the community AMI you put up adn it
>> works just great.
>> It is a big step forward for couchapps since it is not possible to
>> use username, or role from userCtx in rewrite rules
>> you can use the users IP address to firewall your system
>> you can redirect from GET to PUT
>> by going from a simple path, pick up username from userCtx, add =
timestamp
>> and other context info you have a lot to play with
>> doing so by pointing to a _update function expands the possibilities
>> further
>> creating nested rules is really easy
>> using regExp offers another host of possibilities
>> since you can return a http code and body directly, you can skip =
creating
>> pages for common respons. A simple template function and the
>> this.template[whatever] that is sitting in your ddoc will do in most =
cases,
>> especially having usrCtx available
>>=20
>> What I did was to create a EC2 instannce, redirect traffic on port 80
>> directly to CouchDB 2, set up a few vhosts and their corresponding =
design
>> documents.
>> I always set up a design document to the the API for my app or system =
of
>> apps and it feels akward to speak of a rewrite handler after this.
>>=20
>> _rewrite concecptual upgrade #1
>> *************************************
>> At least we now have a router management system.
>> It would be easy to implement your favourite router in the CouchDB
>> _rewrite, making nice isomorphic sollutions
>>=20
>> _rewrite concecptual upgrade #2
>> *************************************
>> I woud call my first experiment an API server. Inside a ddoc, yes.
>> The simplicity is a bit hard to grasp.
>> The power of this simplicity is even hard to grasp.
>>=20
>> I hope there is someone that would pick up where ermouth left this =
and
>> push it through testing so it could be released with 2.0
>> It unlocks a lot of the hidden power of couchapps, and with the Pouch
>> based tools Ddoc Lab and Inliner that ermouth has made for the site =
builder
>> and content people, this is a very low barrier of entry to CouchDB =
for new
>> developers.
>>=20
>> Johs
>>=20
>>=20
>>=20
>>=20
>>> On 16. okt. 2015, at 14.19, ermouth <ermouth@gmail.com> wrote:
>>>=20
>>> Closing proposal off.
>>>=20
>>> If someone wants to carry it on, current state is:
>>>=20
>>>=20
>> =
https://github.com/ermouth/couchdb-chttpd/commit/8e50451aec2b07f95b9115ddd=
c9b33b512651026
>>>=20
>> =
https://github.com/ermouth/couchdb-couch/commit/54b4324eeefe27431f5b42a892=
26b1ea63e17eb6
>>>=20
>> =
https://github.com/ermouth/couchdb/commit/4d2d91ed67ed982ff2667cafa5c308e1=
a95350bc
>>>=20
>> =
https://github.com/ermouth/couchdb-couch-mrview/commit/ae7ff262a8ace666891=
d6c9af5386ed2d1910303
>>>=20
>>> It all works pretty fine and tested, but with own tests, since I was
>> unable
>>> to overcome CouchDB test set in reasonable time =E2=80=93 so no PR.
>>>=20
>>> Current syntax example:
>>>=20
>>> rewrites: function(req) {
>>> // req is similar to req obj in list fn, but without .id, .info, =
.uuid,
>>> .form
>>> return {
>>>  // path is mandatory
>>>  path:"/some/path?with=3Dquery&some=3Dparams",
>>>  // other fields are optional
>>>  headers:{/*headers go here*/},
>>>  method:"POST",
>>>  code:404,
>>>  body:JSON.stringify([1,2,3])
>>> }
>>> }
>>>=20
>>> ermouth
>>=20
>>=20
>=20
>=20
> --=20
>=20
> Dipl.-Inf. Harald R. Kisch
>=20
> B=C3=BCro besetzt von Di - Do 9:00 Uhr bis 18:00 Uhr
> Jahnstr. 3
> 80469 M=C3=BCnchen
> Germany
>=20
> Tel: +49 (0) 89 41 61 58 57-6
> Mobil DE: +49 (0) 176 56 58 58 38
>=20
> Skype: harald.kisch
> Mail: haraldkisch@gmail.com

--=20
Professional Support for Apache CouchDB:
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