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Merge pull request #2806 from yue9944882/eks-authentication
EKS authentication based on AWS Sigv4
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...ples-release-19/src/main/java/io/kubernetes/client/examples/EKSAuthenticationExample.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,53 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
| package io.kubernetes.client.examples; | ||
|
|
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| import com.amazonaws.auth.DefaultAWSCredentialsProviderChain; | ||
| import com.amazonaws.auth.STSAssumeRoleSessionCredentialsProvider; | ||
| import io.kubernetes.client.openapi.ApiClient; | ||
| import io.kubernetes.client.openapi.ApiException; | ||
| import io.kubernetes.client.openapi.models.VersionInfo; | ||
| import io.kubernetes.client.util.ClientBuilder; | ||
| import io.kubernetes.client.util.credentials.EKSAuthentication; | ||
| import io.kubernetes.client.util.version.Version; | ||
|
|
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| import java.io.IOException; | ||
|
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| public class EKSAuthenticationExample { | ||
| public static void main(String[] args) throws IOException, ApiException { | ||
|
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| // Connecting an EKS cluster using {@link io.kubernetes.client.util.credentials.EKSAuthentication } | ||
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| // This role should have access to the EKS cluster. | ||
| String roleArn = "arn:aws:iam::123456789:role/TestRole"; | ||
| // Arbitrary role session name. | ||
| String roleSessionName = "test"; | ||
| // Region where the EKS cluster at. | ||
| String region = "us-west-2"; | ||
| // EKS cluster name. | ||
| String clusterName = "test-2"; | ||
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| STSAssumeRoleSessionCredentialsProvider credProvider = new STSAssumeRoleSessionCredentialsProvider( | ||
| new DefaultAWSCredentialsProviderChain().getCredentials(), | ||
| roleArn, | ||
| roleSessionName); | ||
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| ApiClient apiClient = ClientBuilder.standard() | ||
| .setAuthentication(new EKSAuthentication(credProvider, region, clusterName)) | ||
| .build(); | ||
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| Version version = new Version(apiClient); | ||
| VersionInfo versionInfo = version.getVersion(); | ||
| System.out.println(versionInfo); | ||
| } | ||
| } |
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99 changes: 99 additions & 0 deletions
99
util/src/main/java/io/kubernetes/client/util/credentials/EKSAuthentication.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| Copyright 2023 The Kubernetes Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
| package io.kubernetes.client.util.credentials; | ||
|
|
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| import com.amazonaws.auth.AWSSessionCredentials; | ||
| import com.amazonaws.auth.AWSSessionCredentialsProvider; | ||
| import io.kubernetes.client.openapi.ApiClient; | ||
| import io.kubernetes.client.util.eks.AWS4STSSigner; | ||
| import io.kubernetes.client.util.eks.AWS4SignerBase; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.net.MalformedURLException; | ||
| import java.net.URI; | ||
| import java.net.URISyntaxException; | ||
| import java.time.Instant; | ||
| import java.time.temporal.ChronoUnit; | ||
| import java.util.Base64; | ||
| import java.util.HashMap; | ||
|
|
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| /** | ||
| * EKS cluster authentication which generates a bearer token from AWS AK/SK. It doesn't require an "aws" | ||
| * command line tool in the $PATH. | ||
| */ | ||
| public class EKSAuthentication implements Authentication { | ||
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| private static final Logger log = LoggerFactory.getLogger(EKSAuthentication.class); | ||
|
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| /** | ||
| * Instantiates a new Eks authentication. | ||
| * | ||
| * @param provider the AWS credential provider | ||
| * @param region the region where EKS cluster at | ||
| * @param clusterName the EKS cluster name | ||
| */ | ||
| public EKSAuthentication(AWSSessionCredentialsProvider provider, String region, String clusterName) { | ||
| this(provider, region, clusterName, MAX_EXPIRY_SECONDS); | ||
| } | ||
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| public EKSAuthentication(AWSSessionCredentialsProvider provider, String region, String clusterName, int expirySeconds) { | ||
| this.provider = provider; | ||
| this.region = region; | ||
| this.clusterName = clusterName; | ||
| if (expirySeconds > MAX_EXPIRY_SECONDS) { | ||
| expirySeconds = MAX_EXPIRY_SECONDS; | ||
| } | ||
| this.expirySeconds = expirySeconds; | ||
| } | ||
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| private static final int MAX_EXPIRY_SECONDS = 60 * 15; | ||
| private final AWSSessionCredentialsProvider provider; | ||
| private final String region; | ||
| private final String clusterName; | ||
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| private final int expirySeconds; | ||
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| @Override | ||
| public void provide(ApiClient client) { | ||
| URI uri = URI.create("https://sts." + this.region + ".amazonaws.com/"); | ||
| AWSSessionCredentials cred = provider.getCredentials(); | ||
| try { | ||
| AWS4STSSigner signer = new AWS4STSSigner( | ||
| uri.toURL(), | ||
| "GET", | ||
| "sts", | ||
| this.region); | ||
| String token = "k8s-aws-v1." + Base64.getEncoder().withoutPadding().encodeToString(signer.computeSignature( | ||
| uri, | ||
| new HashMap<String, String>() {{ | ||
| put("x-k8s-aws-id", clusterName); | ||
|
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| }}, | ||
| new HashMap<String, String>() {{ | ||
| put("Action", "GetCallerIdentity"); | ||
| put("Version", "2011-06-15"); | ||
| }}, | ||
| expirySeconds, | ||
| AWS4SignerBase.EMPTY_BODY_SHA256, | ||
| cred.getAWSAccessKeyId(), | ||
| cred.getAWSSecretKey(), | ||
| cred.getSessionToken()).getBytes()); | ||
| client.setApiKeyPrefix("Bearer"); | ||
| client.setApiKey(token); | ||
| log.info("Generated BEARER token for ApiClient, expiring at {}", Instant.now().plus(expirySeconds, ChronoUnit.SECONDS)); | ||
| } catch (MalformedURLException | URISyntaxException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
| } |
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