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Modified REST server in JSON-REST API #651

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Merged
mspruc merged 4 commits into from
Jan 2, 2026
Merged

Modified REST server in JSON-REST API #651

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52e0dfd
JSON-API server does now send full stack to client when error
aleude Oct 29, 2025
ff916cf
Added import
aleude Oct 29, 2025
d4e5160
Fixed so class correctly returns stacktrace to client when fails
aleude Nov 1, 2025
22995b1
Changed server to also return execution errors messages instead of on…
aleude Dec 30, 2025
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15 changes: 13 additions & 2 deletions wayang-api/wayang-api-json/src/main/scala/Main.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ package org.apache.wayang.api.json
import zio._
import zio.http._
import scala.util.Try
import java.io.{StringWriter, PrintWriter}

import org.apache.wayang.api.json.builder.JsonPlanBuilder
import org.apache.wayang.api.json.operatorfromdrawflow.OperatorFromDrawflowConverter
Expand Down Expand Up @@ -61,8 +62,18 @@ object Main extends ZIOAppDefault {
}
resBody <- ZIO.succeed(Response.text(responseBody))
} yield resBody).catchAll(t => {
t.printStackTrace
ZIO.succeed(Response.error(Status.BadRequest, t.getMessage))
// Error messages printed in server
t.printStackTrace

// Error messages sent to client
val stringWriter = new StringWriter()
val printWriter = new PrintWriter(stringWriter)
t.printStackTrace(printWriter)
printWriter.flush()
val fullErrorOutput = stringWriter.toString()

// Returns status code and the stacktrace (error message)
ZIO.succeed(Response(status = Status.BadRequest, body = Body.fromString(fullErrorOutput)))
})
}

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