commonMain.aws.sdk.kotlin.runtime.region.ResolveRegion.kt Maven / Gradle / Ivy

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Support for AWS configuration

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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

package aws.sdk.kotlin.runtime.region

import aws.sdk.kotlin.runtime.InternalSdkApi
import aws.sdk.kotlin.runtime.config.AwsSdkSetting
import aws.sdk.kotlin.runtime.config.profile.AwsProfile
import aws.sdk.kotlin.runtime.config.profile.loadAwsSharedConfig
import aws.sdk.kotlin.runtime.config.profile.sigV4aSigningRegionSet
import aws.smithy.kotlin.runtime.config.resolve
import aws.smithy.kotlin.runtime.io.use
import aws.smithy.kotlin.runtime.util.LazyAsyncValue
import aws.smithy.kotlin.runtime.util.PlatformProvider
import aws.smithy.kotlin.runtime.util.asyncLazy

/**
 * Attempt to resolve the AWS region to which requests should be made. Returns null if none was detected.
 */
@InternalSdkApi
public suspend fun resolveRegion(
    platformProvider: PlatformProvider = PlatformProvider.System,
    profile: LazyAsyncValue = asyncLazy { loadAwsSharedConfig(platformProvider).activeProfile },
): String? = DefaultRegionProviderChain(platformProvider, profile = profile).use { it.getRegion() }

/**
 * Attempts to resolve sigV4aSigningRegionSet from the JVM system properties, environment variables, and file based configuration
 * @return The sigV4aSigningRegionSet if found, null if not
 */
@InternalSdkApi
public suspend fun resolveSigV4aSigningRegionSet(platform: PlatformProvider = PlatformProvider.System, profile: LazyAsyncValue): Set? {
    val rawString = AwsSdkSetting.AwsSigV4aSigningRegionSet.resolve(platform) ?: profile.get().sigV4aSigningRegionSet
    return rawString
        ?.split(",")
        ?.map { it.trim() }
        ?.filter { it.isNotEmpty() }
        ?.toSet()
}