Grasping at straws a little bit here, but can you (a) do a packet capture (e.g. `tcpdump -X`) to see what's going back and forth on the wire, just to make absolutely sure all of the oddness is on the client's end?

A string like `!D(MISSING)` sorta looks like a decoding error so perhaps it will be instructive to look at the bytes on the wire it's trying to decode, although I can't think what could be confused with an equals sign. It's not like that blooming Greek question mark (http://www.fileformat.info/info/unicode/char/037e/index.htm).

Cheers,




On 14 January 2017 at 18:47, Nigel Rantor <wiggly@wiggly.org> wrote:
On 14/01/17 17:37, Jan von Löwenstein wrote:
Oh, it happens with servant on the client side.

I use a swagger-codegen generated servant based client to access kubernetes.
Calling https://github.com/soundcloud/haskell-kubernetes/blob/master/lib/Kubernetes/Api/ApivApi.hs#L475 works
Calling https://github.com/soundcloud/haskell-kubernetes/blob/master/lib/Kubernetes/Api/ApivApi.hs#L473 doesn't.

>From what I see the `QueryParam"labelSelector" Text`is the same in both.

Logging the value gives the literal `=` as expected. Logging the
(http-client) requests shows the difference.

 So I went ahead and wrote a simple client by hand and when I call the two functions on a local endpoint that shows me the request URL I get the following.

Same arguments for 'pretty' and 'labelSelector' in both cases.

Code:

runListSecret :: Manager -> BaseUrl -> ClientM SecretList

runListSecret manager baseUrl = listSecret (Just "prettyArg") (Just "=") Nothing Nothing Nothing Nothing manager baseUrl



runListService :: Manager -> BaseUrl -> ClientM ServiceList

runListService manager baseUrl = listService (Just "prettyArg") (Just "=") Nothing Nothing Nothing Nothing manager baseUrl

Server log:

127.0.0.1 - - [14/Jan/2017:18:39:49 +0000] "GET /api/v1/secrets?pretty=prettyArg&labelSelector=%3D HTTP/1.1" 404 - 0.0003
127.0.0.1 - - [14/Jan/2017:18:39:49 +0000] "GET /api/v1/services?pretty=prettyArg&labelSelector=%3D HTTP/1.1" 404 - 0.0003

I haven't used swagger-codegen but the servant-client code works for me so I would look more into that.

Swagger codegen looks like it might take me a while to get my head into so maybe you could look at the generated code, or sling it to me here or directly.

The two calls are so similar that I can't see why the generated client would behave differently in those cases.

Regards,

  n

Best
Jan

Nigel Rantor <wiggly@wiggly.org <mailto:wiggly@wiggly.org>> schrieb am

Sa., 14. Jan. 2017 um 18:11 Uhr:

    On 13/01/17 19:28, Jan von Löwenstein wrote:
    > Hi,
    >
    > I have got a two places with a `QueryParam "q" Text` and call it
    with a
    > Text that contains a `=` literal. In one place the `=` is correctly
    > encoded as %3D, in the other I see a `!D(MISSING)`.
    >
    > This has to happen somewhere in Servant or the lower layers. Both
    Texts
    > print out nicely with an `=` sign if I just print them to stdout.
    >
    > Google does not find `!D(MISSING)` anywhere.
    >
    > Any idea what could possibly be the problem here?

    It would be really useful to see exactly how you are 'calling' this.

    Do you have a curl command line or are you using some other client?

       n

    _______________________________________________
    Haskell-Cafe mailing list
    To (un)subscribe, modify options or view archives go to:
    http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
    Only members subscribed via the mailman list are allowed to post.


_______________________________________________
Haskell-Cafe mailing list
To (un)subscribe, modify options or view archives go to:
http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe
Only members subscribed via the mailman list are allowed to post.