dracarys-chain

Chain of responsibility abstraction

License	Apache License, Version 2.0
GroupId	io.github.junhuhdev
ArtifactId	dracarys-chain
Last Version	1.0.0
Release Date	Jan 9, 2021
Type	jar
Description	dracarys-chain Chain of responsibility abstraction
Source Code Management	https://github.com/junhuhdev/dracarys-chain

Download dracarys-chain

Filename	Size
dracarys-chain-1.0.0.pom
dracarys-chain-1.0.0.jar	14 MB
dracarys-chain-1.0.0-sources.jar	17 KB
dracarys-chain-1.0.0-javadoc.jar	255 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/io.github.junhuhdev/dracarys-chain/ -->
<dependency>
    <groupId>io.github.junhuhdev</groupId>
    <artifactId>dracarys-chain</artifactId>
    <version>1.0.0</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/io.github.junhuhdev/dracarys-chain/
implementation 'io.github.junhuhdev:dracarys-chain:1.0.0'

Gradle Kotlin

// https://jarcasting.com/artifacts/io.github.junhuhdev/dracarys-chain/
implementation ("io.github.junhuhdev:dracarys-chain:1.0.0")

Apache Buildr

'io.github.junhuhdev:dracarys-chain:jar:1.0.0'

Apache Ivy

<dependency org="io.github.junhuhdev" name="dracarys-chain" rev="1.0.0">
  <artifact name="dracarys-chain" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='io.github.junhuhdev', module='dracarys-chain', version='1.0.0')
)

Scala SBT

libraryDependencies += "io.github.junhuhdev" % "dracarys-chain" % "1.0.0"

Leiningen

[io.github.junhuhdev/dracarys-chain "1.0.0"]

Dependencies

compile (5)

Group / Artifact	Type	Version
org.springframework.boot : spring-boot-starter-data-jdbc	jar	2.4.1
org.projectlombok : lombok Optional	jar	1.18.16
com.thoughtworks.xstream : xstream	jar	1.4.14
com.google.guava : guava	jar	30.0-jre
org.apache.commons : commons-lang3	jar	3.11

test (1)

Group / Artifact	Type	Version
org.springframework.boot : spring-boot-starter-test	jar	2.4.1

Project Modules

There are no modules declared in this project.

🔥 dracarys-chain

Installation

<dependency>
    <groupId>io.github.junhuhdev</groupId>
    <artifactId>dracarys-chain</artifactId>
    <version>1.0.0</version>
</dependency>

Usage

Enable Dracarys Chain

@EnableDracarysChain
@SpringBootApplication
public class Application {

	public static void main(String[] args) {
		SpringApplication.run(JobRunrApplication.class, args);
	}

}

Commands

import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Component;

@RequiredArgsConstructor
@Component
public class UserValidateCmd implements Command {

	private final ValidationService validationService;

	public ChainContext execute(ChainContext ctx, Chain chain) {
		var event = ctx.getEvent(ValidateUserRequest.class);
		boolean response = validationService.validate(event);
		if (response) {
			return chain.proceed(ctx);
		}
		return ctx;
	}

}

@RequiredArgsConstructor
@Component
public class UserCreateCmd implements Command {

	private final UserRepository userRepository;

	public ChainContext execute(ChainContext ctx, Chain chain) {
		var event = ctx.getEvent(UserRequest.class);
		userRepository.create(event);
		return chain.proceed(ctx);
	}

}

@RequiredArgsConstructor
@Component
public class EmailSendCmd implements Command {

	private final EmailService emailService;

	public ChainContext execute(ChainContext ctx, Chain chain) {
		var event = ctx.getEvent(MailRequest.class);
		emailService.send(event);
		return chain.proceed(ctx);
	}

}

Chain

import ChainBase;
import org.springframework.stereotype.Component;

@Component
public class UserRegistrationChain extends ChainBase {

    @Override
    protected Class<?>[] getCommands() {
        return new Class<?>[]{UserValidateCmd.class, UserCreateCmd.class, EmailSendCmd.class};
    }
}

TODO

• Dashboard
• Sub-chains
• Support retries
• Customizable lock key
• Custom annotations

Versions

Version
1.0.0 Jan 9, 2021