Spring Batch Plus

Features

Kotlin DSL

@Bean
fun testJob(batch: BatchDsl): Job =
    batch {
        job("testJob") {
            step("jobStep1") {
                jobBean("subJob1")
            }
            step("jobStep2") {
                jobBean("subJob2")
            }
        }
    }

@Bean
fun subJob1(batch: BatchDsl, transactionManager: PlatformTransactionManager): Job =
    batch {
        job("subJob1") {
            step("testStep1") {
                tasklet({ _, _ -> RepeatStatus.FINISHED }, transactionManager)
            }
        }
    }

@Bean
fun subJob2(batch: BatchDsl, transactionManager: PlatformTransactionManager): Job =
    batch {
        job("subJob2") {
            step("testStep2") {
                tasklet({ _, _ -> RepeatStatus.FINISHED }, transactionManager)
            }
        }
    }

Single class reader-processor-writer

// single class
@Component
@StepScope
class SampleTasklet : ItemStreamFluxReaderProcessorWriter<Int, String> {
    private var count = 0

    override fun readFlux(executionContext: ExecutionContext): Flux<out Int> {
        return Flux.generate { sink ->
            if (count < 20) {
                sink.next(count)
                ++count
            } else {
                sink.complete()
            }
        }
    }

    override fun process(item: Int): String? {
        return "'$item'"
    }

    override fun write(chunk: Chunk<String>) {
        println(chunk.items)
    }
}

// usage
@Bean
fun testJob(
    sampleTasklet: SampleTasklet,
    batch: BatchDsl,
    transactionManager: PlatformTransactionManager,
): Job =
    batch {
        job("testJob") {
            step("testStep") {
                chunk<Int, String>(3) {
                    transactionManager(transactionManager)
                    reader(sampleTasklet.asItemStreamReader())
                    processor(sampleTasklet.asItemProcessor())
                    writer(sampleTasklet.asItemStreamWriter())
                }
            }
        }
    }

Other Useful Classes

Compatibility

Download

Gradle

implementation("org.springframework.boot:spring-boot-starter-batch:${springBootVersion}") // need spring batch
implementation("com.navercorp.spring:spring-boot-starter-batch-plus-kotlin:${springBatchPlusVersion}")

implementation("org.springframework.boot:spring-boot-starter-batch:${springBootVersion}") // need spring batch
implementation("com.navercorp.spring:spring-boot-starter-batch-plus:${springBatchPlusVersion}")

Maven

<!-- need spring batch -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-batch</artifactId>
    <version>{springBootVersion}</version>
</dependency>
<dependency>
    <groupId>com.navercorp.spring</groupId>
    <artifactId>spring-boot-starter-batch-plus-kotlin</artifactId>
    <version>{springBatchPlusVersion}</version>
</dependency>

<!-- need spring batch -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-batch</artifactId>
    <version>{springBootVersion}</version>
</dependency>
<dependency>
    <groupId>com.navercorp.spring</groupId>
    <artifactId>spring-boot-starter-batch-plus</artifactId>
    <version>{springBatchPlusVersion}</version>
</dependency>

User Guide

Build from source

Prerequisites

Build

License

   Copyright (c) 2022-present NAVER Corp.

   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.