AWS Config Java framework development skills sharing
AWS Config is a tool to track and manage the history of resource allocation on the cloud.Using the AWS Config Java framework can easily develop custom rules and evaluation logic to meet specific needs.This article will share some development skills of the AWS Config Java framework to help you better use the framework.
1. Set the AWS Config Java environment
Before using the AWS Config Java framework, we need to build a Java development environment.Make sure you have installed JDK and Apache Maven and set up related environment variables.
2. Introduce AWS Config Java SDK
With Maven, you can easily introduce AWS Config Java SDK.In the pom.xml file of the project, the following dependencies are added:
<dependencies>
<dependency>
<groupId>software.amazon.awssdk</groupId>
<artifactId>config</artifactId>
<version>2.16.0</version>
</dependency>
</dependencies>
3. Create AWS Config Client
To interact with the AWS Config service, you need to create the AWS Config Client.In the Java code, you can use the following code to create an AWS Config Client object:
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.config.ConfigClient;
import software.amazon.awssdk.services.config.ConfigClientBuilder;
ConfigClientBuilder clientBuilder = ConfigClient.builder();
clientbuilder.region (region.us_east_1); // Set the required area
ConfigClient configClient = clientBuilder.build();
4. Get the history of resource allocation
A common demand using the AWS Config Java framework is the allocation history of obtaining resources.The following code demonstrates how to obtain the allocation history of specific resources through AWS Config Client:
import software.amazon.awssdk.services.config.model.*;
import java.util.List;
String resourceId = "your-resource-id";
DescribeResourceConfigHistoryRequest request = DescribeResourceConfigHistoryRequest.builder()
.resourceId(resourceId)
.build();
DescribeResourceConfigHistoryResponse response = configClient.describeResourceConfigHistory(request);
List<ResourceConfigTimeline> timelines = response. configurationItems();
By calling the `DescribeReSourceConfigistory` method, and pass a effective resource ID, you can obtain the history of the allocation of resources.The list of the `Timelines` in the return result contains the detailed information of each configuration of the resource.
5. Create custom rules
AWS Config Java framework allows you to create custom rules to evaluate the configuration status of resources.Below is a simple example. Demonstrate how to create a rule to check whether the security group configuration of the EC2 instance meets the requirements:
import software.amazon.awssdk.services.config.model.*;
import software.amazon.awssdk.services.config.spi.*;
import software.amazon.awssdk.services.ec2.Ec2Client;
import software.amazon.awssdk.services.ec2.model.*;
public class SecurityGroupRuleEvaluator implements Evaluators.RuleEvaluator {
private final Ec2Client ec2Client;
public SecurityGroupRuleEvaluator(Ec2Client ec2Client) {
this.ec2Client = ec2Client;
}
@Override
public Evaluation evaluate(ConfigRuleEvaluationKey configRuleEvaluationKey, ConfigurationItem configurationItem, ComplianceType complianceType) {
// Get resource ID
String resourceId = configurationItem.getResourceId();
// Check whether the configuration of the safety group meets the requirements
Boolean isCompliant = // ... Implement custom logic
// Return to evaluation based on the results of the inspection
if (isCompliant) {
return Evaluation.COMPLIANT;
} else {
return Evaluation.NON_COMPLIANT;
}
}
@Override
public String getRuleIdentifier() {
return "security-group-rule";
}
}
In this example, we created a `SecurityGroupRuleevaluator` class and implemented the` Evaluators.ruleevaluator` interface.In the `Evaluate` method, we can define our custom rules and logic and return the corresponding assessment based on the results.
6. Register a custom rule
In order to make the custom rules take effect, you need to register them in AWS Config.Use the following code to register the custom rules just created:
import software.amazon.awssdk.services.config.model.*;
ConfigRule configRule = ConfigRule.builder()
.configrulename ("Security-GROUP-Rule") // Customized rules name name
.source(Source.builder().owner("CUSTOM_LAMBDA").build())
.inputParameters(ImmutableMap.of(
"key1", "value1",
"key2", "value2"
))
.build();
PutConfigRuleRequest putConfigRuleRequest = PutConfigRuleRequest.builder()
.configRule(configRule)
.build();
configClient.putConfigRule(putConfigRuleRequest);
In this example, we created a `Configrule` object and set up correlation attributes of custom rules, such as rules names, owners, etc.We then call the `PutConfigrule` method to register the custom rules into AWS Config.
The above are some development techniques that use the AWS Config Java framework.You can use these techniques to customize and expand the functions of AWS Config according to your needs.I hope this article will help you understand the development of the AWS Config Java framework!
