spray/spray

A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable

Konrad `ktoso` Malawski

@ktoso

google things around “akka http rejection handler json"

Conor

@somethingconcon

@ktoso oh one more question. Is akka-http planning on adopting play-json in the near future or is spray-json here to stay?

Konrad `ktoso` Malawski

@ktoso

there’s no need to “adopt”; it just works ™ with play-json

https://github.com/hseeberger/akka-http-json

Conor

@somethingconcon

noice!

:D :D :D

Konrad `ktoso` Malawski

@ktoso

noice indeed ;)

lemonxah

@lemonxah

hi guys

Error:(52, 15) Cannot find JsonWriter or JsonFormat type class for List[com.konga.order.models.Order]

it does this for all list types

and i do have

import com.konga.order.models.OrderJsonSupport._
import DefaultJsonProtocol._

Arnout Engelen

@raboof

@lemonxah have you verified it works for com.konga.order.models.Order when it's not in a List?

lemonxah

@lemonxah

nvm found the issue .. the OrderJsonSupport extended DefaultJsonProtocol as well removed that and it works

Arnout Engelen

@raboof

ah yes if you have multiple matching implicits the compiler sometimes makes it look like none matched, very confusing indeed

lemonxah

@lemonxah

normally i would have ambigious implicit

but now .. nothing matched .. that was very confusing

Abhiraj Padhye

@A4Abhiraj

Hey everyone! This issue is still open. Can anyone help ?
spray/spray-json#159

Andrey Ivanov

@a-nigredo

Hi all, I am busy with migration from spray to akka-http and don't understand what happens with such a code:

def route = path(Segment) {
 actorReffactory.actorOf("")
}

What will be in a response then?

How spray process actorRef as a response?

Konrad `ktoso` Malawski

@ktoso

this won’t compile

please ask on gitter.im/akka/akka btw :)

it won’t compile, exactly because the question you ask can’t be answered statically — akka http enforces these things

Andrey Ivanov

@a-nigredo

@ktoso I know that it is not compiled in akka-http but in spray. My question is what convertion spray uses to handle such case?

Jameel Al-Aziz

@jalaziz

Curious if this is a known thing before I open up a ticket. RouteTest in the testkit appears to eagerly create and start the actor system. While this normally wouldn't be an issue, we use ScalaTest's tagging to include/exclude tests. The eager loading slows things down considerably as the actor system will be initialized even though no tests are actually run.

Konrad `ktoso` Malawski

@ktoso

Spray has been end of life since a few years, please migrate do akka-http (migration is usually rather simple), and ask there then

Jameel Al-Aziz

@jalaziz

ahh, good point, forgot about that, we actually do use akka-http for newer things

thanks!

although, looks like it's still eager in akka-http, but will upgrade first

Konrad `ktoso` Malawski

@ktoso

yeap, upgrade and ask on https://discuss.akka.io I propose :) happy hakking

ShankarShastri

@shankarshastri

Is there a way to parse a JSON like this in spray?

{
"k1": [
"k2": { "k3" : 1 },
"k4": {"k41" : 2}
]
}

Kirill Yankov

@manonthegithub

@shankarshastri you can use spray-json.

import spray.json._
val jsonString: String = ???

val json: JsObject = jsonString.parseJson.asJsObject

or you can declare a class describing this json and declare format for it and then convert to it directly:


class JsonRepr(???)

implicit object ReprFormat extends RootJsonFormat[JsonRepr]{
   ???
}

import spray.json._
val jsonString: String = ???
jsonString.parseJson.convertTo[ReprFormat]

ShankarShastri

@shankarshastri

But I don't know the key names @manonthegithub

to specify them in case class

Kirill Yankov

@manonthegithub

then probably the first sample val json: JsObject = jsonString.parseJson.asJsObject is your option

you can then get Map[String, JsValue] of the fields of the JsObject

jsonString.parseJson.asJsObject.fields will return Map[String, JsValue]

ShankarShastri

@shankarshastri

I wanted to understand spray json library.
Any hints to tell where to start from?

I meant code.

Vladislav Rybin

@VladislavRybin

hey guys, does anyone else have false error highlights in spray routes when using IntelliJ IDEA?
All my code is covered in red highlighting :^)
Is there a way to fix this?

Arnout Engelen

@raboof

@VladislavRybin in akka-http you can use concat instead of ~ which might be less prone to confusing IntelliJ - not sure if that was in Spray already though (https://doc.akka.io/docs/akka-http/current/routing-dsl/directives/index.html)

Konrad `ktoso` Malawski

@ktoso

it wasn't

please upgrade to akka-http; spray has been end-of-life for years

the upgrade is rather straight forward

ShankarShastri

@shankarshastri

Guys wanted help regarding this one:
spray/spray-json#257
How to provide default values for optional parameters in request payload while marshalling ?

ShankarShastri

@shankarshastri

@ktoso @jrudolph your help required on the above issue.

Arnout Engelen

@raboof

@shankarshastri this is currently not supported in spray-json, but if it's just a couple of classes you could write your own custom readers? the generated writer might already do what you want?

ShankarShastri

@shankarshastri

@raboof , can you give me a example, or if present in readme.md can you suggest me?

Arnout Engelen

@raboof

@shankarshastri if you search for def read in the README those are examples of different ways to 'manually' write readers

vito-c

@vito-c

this room still active? :D how do I marshal a case class to json when using akka-http websocket? I am sending json with the akka-http websocket client.

Arnout Engelen

@raboof

@vito-c most people have moved to akka-http and discuss it in akka/akka or https://discuss.akka.io I think

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