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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.cloud.aws;
import com.amazonaws.auth.STSAssumeRoleSessionCredentialsProvider;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.securitytoken.AWSSecurityTokenService;
import com.amazonaws.services.securitytoken.AWSSecurityTokenServiceClientBuilder;
import com.amazonaws.services.simplesystemsmanagement.AWSSimpleSystemsManagement;
import com.amazonaws.services.simplesystemsmanagement.AWSSimpleSystemsManagementClient;
import com.amazonaws.services.simplesystemsmanagement.model.GetParametersRequest;
import com.amazonaws.services.simplesystemsmanagement.model.GetParametersResult;
import com.yahoo.component.annotation.Inject;
import com.yahoo.component.AbstractComponent;
import com.yahoo.container.jdisc.secretstore.SecretNotFoundException;
import com.yahoo.container.jdisc.secretstore.SecretStore;
import com.yahoo.container.jdisc.secretstore.SecretStoreConfig;
import com.yahoo.slime.Cursor;
import com.yahoo.slime.Slime;
import java.util.List;
import java.util.stream.Collectors;
/**
* @author mortent
*/
public class AwsParameterStore extends AbstractComponent implements SecretStore {
private final VespaAwsCredentialsProvider credentialsProvider;
private final List<AwsSettings> configuredStores;
@Inject
public AwsParameterStore(SecretStoreConfig secretStoreConfig) {
this(translateConfig(secretStoreConfig));
}
public AwsParameterStore(List<AwsSettings> configuredStores) {
this.configuredStores = configuredStores;
this.credentialsProvider = new VespaAwsCredentialsProvider();
}
@Override
public String getSecret(String key) {
for (var store : configuredStores) {
AWSSecurityTokenService tokenService = AWSSecurityTokenServiceClientBuilder
.standard()
.withRegion(Regions.DEFAULT_REGION)
.withCredentials(credentialsProvider)
.build();
STSAssumeRoleSessionCredentialsProvider assumeExtAccountRole = new STSAssumeRoleSessionCredentialsProvider
.Builder(toRoleArn(store.getAwsId(), store.getRole()), "vespa")
.withExternalId(store.getExternalId())
.withStsClient(tokenService)
.build();
AWSSimpleSystemsManagement client = AWSSimpleSystemsManagementClient.builder()
.withCredentials(assumeExtAccountRole)
.withRegion(store.getRegion())
.build();
GetParametersRequest parametersRequest = new GetParametersRequest().withNames(key).withWithDecryption(true);
GetParametersResult parameters = client.getParameters(parametersRequest);
int count = parameters.getParameters().size();
if (count == 1) {
return parameters.getParameters().get(0).getValue();
} else if (count > 1) {
throw new RuntimeException("Found too many parameters, expected 1, but found " + count);
}
}
throw new SecretNotFoundException("Could not find secret " + key + " in any configured secret store");
}
@Override
public String getSecret(String key, int version) {
// TODO
return getSecret(key);
}
private String toRoleArn(String awsId, String role) {
return "arn:aws:iam::" + awsId + ":role/" + role;
}
private static List<AwsSettings> translateConfig(SecretStoreConfig secretStoreConfig) {
return secretStoreConfig.awsParameterStores()
.stream()
.map(config -> new AwsSettings(config.name(), config.role(), config.awsId(), config.externalId(), config.region()))
.toList();
}
public static class AwsSettings {
String name;
String role;
String awsId;
String externalId;
String region;
AwsSettings(String name, String role, String awsId, String externalId, String region) {
this.name = validate(name, "name");
this.role = validate(role, "role");
this.awsId = validate(awsId, "awsId");
this.externalId = validate(externalId, "externalId");
this.region = validate(region, "region");
}
public String getName() {
return name;
}
public String getRole() {
return role;
}
public String getAwsId() {
return awsId;
}
public String getExternalId() {
return externalId;
}
public String getRegion() {
return region;
}
static AwsSettings fromSlime(Slime slime) {
var json = slime.get();
return new AwsSettings(
json.field("name").asString(),
json.field("role").asString(),
json.field("awsId").asString(),
json.field("externalId").asString(),
json.field("region").asString()
);
}
void toSlime(Cursor slime) {
slime.setString("name", name);
slime.setString("role", role);
slime.setString("awsId", awsId);
slime.setString("externalId", "*****");
slime.setString("region", region);
}
static String validate(String value, String name) {
if (value == null || value.isBlank())
throw new IllegalArgumentException("Config parameter '" + name + "' was blank or empty");
return value;
}
}
}
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