commonMain.aws.sdk.kotlin.services.bedrockruntime.serde.ConverseStreamOperationDeserializer.kt Maven / Gradle / Ivy

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The AWS Kotlin client for Bedrock Runtime
There is a newer version: 1.3.80
// Code generated by smithy-kotlin-codegen. DO NOT EDIT!

package aws.sdk.kotlin.services.bedrockruntime.serde

import aws.sdk.kotlin.services.bedrockruntime.model.BedrockRuntimeException
import aws.sdk.kotlin.services.bedrockruntime.model.ConverseStreamOutput
import aws.sdk.kotlin.services.bedrockruntime.model.ConverseStreamResponse
import aws.smithy.kotlin.runtime.ClientException
import aws.smithy.kotlin.runtime.awsprotocol.eventstream.MessageType
import aws.smithy.kotlin.runtime.awsprotocol.eventstream.decodeFrames
import aws.smithy.kotlin.runtime.awsprotocol.eventstream.type
import aws.smithy.kotlin.runtime.awsprotocol.json.RestJsonErrorDeserializer
import aws.smithy.kotlin.runtime.awsprotocol.setAseErrorMetadata
import aws.smithy.kotlin.runtime.awsprotocol.withPayload
import aws.smithy.kotlin.runtime.http.HttpCall
import aws.smithy.kotlin.runtime.http.isSuccess
import aws.smithy.kotlin.runtime.http.operation.HttpDeserializer
import aws.smithy.kotlin.runtime.http.readAll
import aws.smithy.kotlin.runtime.http.toSdkByteReadChannel
import aws.smithy.kotlin.runtime.operation.ExecutionContext
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.map


internal class ConverseStreamOperationDeserializer: HttpDeserializer.Streaming {

    override suspend fun deserialize(context: ExecutionContext, call: HttpCall): ConverseStreamResponse {
        val response = call.response
        if (!response.status.isSuccess()) {
            val payload = response.body.readAll()
            throwConverseStreamError(context, call, payload)
        }
        val builder = ConverseStreamResponse.Builder()

        deserializeConverseStreamOperationBody(builder, call)
        builder.correctErrors()
        return builder.build()
    }
}

private fun throwConverseStreamError(context: ExecutionContext, call: HttpCall, payload: ByteArray?): kotlin.Nothing {
    val wrappedResponse = call.response.withPayload(payload)
    val wrappedCall = call.copy(response = wrappedResponse)

    val errorDetails = try {
        RestJsonErrorDeserializer.deserialize(call.response.headers, payload)
    } catch (ex: Exception) {
        throw BedrockRuntimeException("Failed to parse response as 'restJson1' error", ex).also {
            setAseErrorMetadata(it, wrappedCall.response, null)
        }
    }

    val ex = when(errorDetails.code) {
        "ModelTimeoutException" -> ModelTimeoutExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "AccessDeniedException" -> AccessDeniedExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ResourceNotFoundException" -> ResourceNotFoundExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ThrottlingException" -> ThrottlingExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ServiceUnavailableException" -> ServiceUnavailableExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "InternalServerException" -> InternalServerExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ValidationException" -> ValidationExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ModelNotReadyException" -> ModelNotReadyExceptionDeserializer().deserialize(context, wrappedCall, payload)
        "ModelErrorException" -> ModelErrorExceptionDeserializer().deserialize(context, wrappedCall, payload)
        else -> BedrockRuntimeException(errorDetails.message)
    }

    setAseErrorMetadata(ex, wrappedResponse, errorDetails)
    throw ex
}

internal suspend fun deserializeConverseStreamOperationBody(builder: ConverseStreamResponse.Builder, call: HttpCall) {
    val chan = call.response.body.toSdkByteReadChannel(call) ?: return
    val frames = decodeFrames(chan)
    val events = frames
        .map { message ->
            when (val mt = message.type()) {
                is MessageType.Event -> when (mt.shapeType) {
                    "messageStart" -> {
                        val e = deserializeMessageStartEventPayload(message.payload)
                        ConverseStreamOutput.MessageStart(e)
                    }
                    "contentBlockStart" -> {
                        val e = deserializeContentBlockStartEventPayload(message.payload)
                        ConverseStreamOutput.ContentBlockStart(e)
                    }
                    "contentBlockDelta" -> {
                        val e = deserializeContentBlockDeltaEventPayload(message.payload)
                        ConverseStreamOutput.ContentBlockDelta(e)
                    }
                    "contentBlockStop" -> {
                        val e = deserializeContentBlockStopEventPayload(message.payload)
                        ConverseStreamOutput.ContentBlockStop(e)
                    }
                    "messageStop" -> {
                        val e = deserializeMessageStopEventPayload(message.payload)
                        ConverseStreamOutput.MessageStop(e)
                    }
                    "metadata" -> {
                        val e = deserializeConverseStreamMetadataEventPayload(message.payload)
                        ConverseStreamOutput.Metadata(e)
                    }
                    else -> ConverseStreamOutput.SdkUnknown
                }
                is MessageType.Exception -> when (mt.shapeType) {
                    "internalServerException" -> {
                        val err = deserializeInternalServerExceptionPayload(message.payload)
                        throw err
                    }
                    "modelStreamErrorException" -> {
                        val err = deserializeModelStreamErrorExceptionPayload(message.payload)
                        throw err
                    }
                    "validationException" -> {
                        val err = deserializeValidationExceptionPayload(message.payload)
                        throw err
                    }
                    "throttlingException" -> {
                        val err = deserializeThrottlingExceptionPayload(message.payload)
                        throw err
                    }
                    "serviceUnavailableException" -> {
                        val err = deserializeServiceUnavailableExceptionPayload(message.payload)
                        throw err
                    }
                    else -> throw BedrockRuntimeException("error processing event stream, unrecognized errorType: ${mt.shapeType}")
                }
                is MessageType.Error -> throw BedrockRuntimeException("error processing event stream: errorCode=${mt.errorCode}; message=${mt.message}")
                is MessageType.SdkUnknown -> throw ClientException("unrecognized event stream message `:message-type`: ${mt.messageType}")
            }
        }

    builder.stream = events
}