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// Code generated by smithy-kotlin-codegen. DO NOT EDIT!

package aws.sdk.kotlin.services.dynamodbstreams

import aws.sdk.kotlin.runtime.http.ApiMetadata
import aws.sdk.kotlin.runtime.http.AwsUserAgentMetadata
import aws.sdk.kotlin.runtime.http.interceptors.AwsSpanInterceptor
import aws.sdk.kotlin.runtime.http.middleware.AwsRetryHeaderMiddleware
import aws.sdk.kotlin.runtime.http.middleware.RecursionDetection
import aws.sdk.kotlin.runtime.http.middleware.UserAgent
import aws.sdk.kotlin.services.dynamodbstreams.auth.DynamoDbStreamsAuthSchemeProviderAdapter
import aws.sdk.kotlin.services.dynamodbstreams.auth.DynamoDbStreamsIdentityProviderConfigAdapter
import aws.sdk.kotlin.services.dynamodbstreams.endpoints.internal.EndpointResolverAdapter
import aws.sdk.kotlin.services.dynamodbstreams.model.*
import aws.sdk.kotlin.services.dynamodbstreams.serde.*
import aws.smithy.kotlin.runtime.auth.AuthSchemeId
import aws.smithy.kotlin.runtime.auth.awssigning.AwsSigningAttributes
import aws.smithy.kotlin.runtime.auth.awssigning.DefaultAwsSigner
import aws.smithy.kotlin.runtime.awsprotocol.AwsAttributes
import aws.smithy.kotlin.runtime.awsprotocol.json.AwsJsonProtocol
import aws.smithy.kotlin.runtime.client.SdkClientOption
import aws.smithy.kotlin.runtime.collections.attributesOf
import aws.smithy.kotlin.runtime.collections.putIfAbsent
import aws.smithy.kotlin.runtime.collections.putIfAbsentNotNull
import aws.smithy.kotlin.runtime.http.SdkHttpClient
import aws.smithy.kotlin.runtime.http.auth.AuthScheme
import aws.smithy.kotlin.runtime.http.auth.SigV4AuthScheme
import aws.smithy.kotlin.runtime.http.operation.OperationAuthConfig
import aws.smithy.kotlin.runtime.http.operation.OperationMetrics
import aws.smithy.kotlin.runtime.http.operation.SdkHttpOperation
import aws.smithy.kotlin.runtime.http.operation.context
import aws.smithy.kotlin.runtime.http.operation.roundTrip
import aws.smithy.kotlin.runtime.http.operation.telemetry
import aws.smithy.kotlin.runtime.io.SdkManagedGroup
import aws.smithy.kotlin.runtime.io.addIfManaged
import aws.smithy.kotlin.runtime.operation.ExecutionContext

internal class DefaultDynamoDbStreamsClient(override val config: DynamoDbStreamsClient.Config) : DynamoDbStreamsClient {
    private val managedResources = SdkManagedGroup()
    private val client = SdkHttpClient(config.httpClient)
    private val identityProviderConfig = DynamoDbStreamsIdentityProviderConfigAdapter(config)
    private val configuredAuthSchemes = with(config.authSchemes.associateBy(AuthScheme::schemeId).toMutableMap()){
        getOrPut(AuthSchemeId.AwsSigV4){
            SigV4AuthScheme(DefaultAwsSigner, "dynamodb")
        }
        toMap()
    }
    private val authSchemeAdapter = DynamoDbStreamsAuthSchemeProviderAdapter(config)
    private val telemetryScope = "aws.sdk.kotlin.services.dynamodbstreams"
    private val opMetrics = OperationMetrics(telemetryScope, config.telemetryProvider)

    init {
        managedResources.addIfManaged(config.httpClient)
        managedResources.addIfManaged(config.credentialsProvider)
    }

    private val awsUserAgentMetadata = AwsUserAgentMetadata.fromEnvironment(ApiMetadata(ServiceId, SdkVersion), config.applicationId)

    /**
     * Returns information about a stream, including the current status of the stream, its Amazon Resource Name (ARN), the composition of its shards, and its corresponding DynamoDB table.
     *
     * You can call `DescribeStream` at a maximum rate of 10 times per second.
     *
     * Each shard in the stream has a `SequenceNumberRange` associated with it. If the `SequenceNumberRange` has a `StartingSequenceNumber` but no `EndingSequenceNumber`, then the shard is still open (able to receive more stream records). If both `StartingSequenceNumber` and `EndingSequenceNumber` are present, then that shard is closed and can no longer receive more data.
     */
    override suspend fun describeStream(input: DescribeStreamRequest): DescribeStreamResponse {
        val op = SdkHttpOperation.build {
            serializeWith = DescribeStreamOperationSerializer()
            deserializeWith = DescribeStreamOperationDeserializer()
            operationName = "DescribeStream"
            serviceName = ServiceId
            telemetry {
                provider = config.telemetryProvider
                scope = telemetryScope
                metrics = opMetrics
                attributes = attributesOf {
                    "rpc.system" to "aws-api"
                }
            }
            execution.auth = OperationAuthConfig(authSchemeAdapter, configuredAuthSchemes, identityProviderConfig)
            execution.endpointResolver = EndpointResolverAdapter(config)
            execution.retryStrategy = config.retryStrategy
            execution.retryPolicy = config.retryPolicy
        }
        mergeServiceDefaults(op.context)
        op.install(AwsRetryHeaderMiddleware())
        op.interceptors.add(AwsSpanInterceptor)
        op.install(AwsJsonProtocol("DynamoDBStreams_20120810", "1.0"))
        op.install(UserAgent(awsUserAgentMetadata))
        op.install(RecursionDetection())
        op.interceptors.addAll(config.interceptors)
        return op.roundTrip(client, input)
    }

    /**
     * Retrieves the stream records from a given shard.
     *
     * Specify a shard iterator using the `ShardIterator` parameter. The shard iterator specifies the position in the shard from which you want to start reading stream records sequentially. If there are no stream records available in the portion of the shard that the iterator points to, `GetRecords` returns an empty list. Note that it might take multiple calls to get to a portion of the shard that contains stream records.
     *
     * `GetRecords` can retrieve a maximum of 1 MB of data or 1000 stream records, whichever comes first.
     */
    override suspend fun getRecords(input: GetRecordsRequest): GetRecordsResponse {
        val op = SdkHttpOperation.build {
            serializeWith = GetRecordsOperationSerializer()
            deserializeWith = GetRecordsOperationDeserializer()
            operationName = "GetRecords"
            serviceName = ServiceId
            telemetry {
                provider = config.telemetryProvider
                scope = telemetryScope
                metrics = opMetrics
                attributes = attributesOf {
                    "rpc.system" to "aws-api"
                }
            }
            execution.auth = OperationAuthConfig(authSchemeAdapter, configuredAuthSchemes, identityProviderConfig)
            execution.endpointResolver = EndpointResolverAdapter(config)
            execution.retryStrategy = config.retryStrategy
            execution.retryPolicy = config.retryPolicy
        }
        mergeServiceDefaults(op.context)
        op.install(AwsRetryHeaderMiddleware())
        op.interceptors.add(AwsSpanInterceptor)
        op.install(AwsJsonProtocol("DynamoDBStreams_20120810", "1.0"))
        op.install(UserAgent(awsUserAgentMetadata))
        op.install(RecursionDetection())
        op.interceptors.addAll(config.interceptors)
        return op.roundTrip(client, input)
    }

    /**
     * Returns a shard iterator. A shard iterator provides information about how to retrieve the stream records from within a shard. Use the shard iterator in a subsequent `GetRecords` request to read the stream records from the shard.
     *
     * A shard iterator expires 15 minutes after it is returned to the requester.
     *
     * @sample aws.sdk.kotlin.services.dynamodbstreams.samples.GetShardIterator.sample
     */
    override suspend fun getShardIterator(input: GetShardIteratorRequest): GetShardIteratorResponse {
        val op = SdkHttpOperation.build {
            serializeWith = GetShardIteratorOperationSerializer()
            deserializeWith = GetShardIteratorOperationDeserializer()
            operationName = "GetShardIterator"
            serviceName = ServiceId
            telemetry {
                provider = config.telemetryProvider
                scope = telemetryScope
                metrics = opMetrics
                attributes = attributesOf {
                    "rpc.system" to "aws-api"
                }
            }
            execution.auth = OperationAuthConfig(authSchemeAdapter, configuredAuthSchemes, identityProviderConfig)
            execution.endpointResolver = EndpointResolverAdapter(config)
            execution.retryStrategy = config.retryStrategy
            execution.retryPolicy = config.retryPolicy
        }
        mergeServiceDefaults(op.context)
        op.install(AwsRetryHeaderMiddleware())
        op.interceptors.add(AwsSpanInterceptor)
        op.install(AwsJsonProtocol("DynamoDBStreams_20120810", "1.0"))
        op.install(UserAgent(awsUserAgentMetadata))
        op.install(RecursionDetection())
        op.interceptors.addAll(config.interceptors)
        return op.roundTrip(client, input)
    }

    /**
     * Returns an array of stream ARNs associated with the current account and endpoint. If the `TableName` parameter is present, then `ListStreams` will return only the streams ARNs for that table.
     *
     * You can call `ListStreams` at a maximum rate of 5 times per second.
     *
     * @sample aws.sdk.kotlin.services.dynamodbstreams.samples.ListStreams.sample
     */
    override suspend fun listStreams(input: ListStreamsRequest): ListStreamsResponse {
        val op = SdkHttpOperation.build {
            serializeWith = ListStreamsOperationSerializer()
            deserializeWith = ListStreamsOperationDeserializer()
            operationName = "ListStreams"
            serviceName = ServiceId
            telemetry {
                provider = config.telemetryProvider
                scope = telemetryScope
                metrics = opMetrics
                attributes = attributesOf {
                    "rpc.system" to "aws-api"
                }
            }
            execution.auth = OperationAuthConfig(authSchemeAdapter, configuredAuthSchemes, identityProviderConfig)
            execution.endpointResolver = EndpointResolverAdapter(config)
            execution.retryStrategy = config.retryStrategy
            execution.retryPolicy = config.retryPolicy
        }
        mergeServiceDefaults(op.context)
        op.install(AwsRetryHeaderMiddleware())
        op.interceptors.add(AwsSpanInterceptor)
        op.install(AwsJsonProtocol("DynamoDBStreams_20120810", "1.0"))
        op.install(UserAgent(awsUserAgentMetadata))
        op.install(RecursionDetection())
        op.interceptors.addAll(config.interceptors)
        return op.roundTrip(client, input)
    }

    override fun close() {
        managedResources.unshareAll()
    }

    /**
     * merge the defaults configured for the service into the execution context before firing off a request
     */
    private fun mergeServiceDefaults(ctx: ExecutionContext) {
        ctx.putIfAbsent(SdkClientOption.ClientName, config.clientName)
        ctx.putIfAbsent(SdkClientOption.LogMode, config.logMode)
        ctx.putIfAbsentNotNull(AwsAttributes.Region, config.region)
        ctx.putIfAbsentNotNull(AwsSigningAttributes.SigningRegion, config.region)
        ctx.putIfAbsent(AwsSigningAttributes.SigningService, "dynamodb")
        ctx.putIfAbsent(AwsSigningAttributes.CredentialsProvider, config.credentialsProvider)
    }

}