Getting Started

运行环境

Java JDK7 或更高版本

获取与安装

启动

Spring XD 有两种运行模式，single-node和multi-node

• single-node是由单独的进程负责所有处理和管理的工作。用于入门、应用程序的快速开发和测试。
• multi-node是分布式模式，用于生产环境

领域概念

Stream

在 Spring XD 中, 流被定义为由事件驱动的数据，从一个Source到Sink，中间可以经过任意数量的Processor.

流处理在XD容器中进行，而流的定义和部署经由 XD Admin Server 完成。

Modules

模块由类型分类，可以由名称和分类轻易的区分模块的作用和功能。

在当前版本，Module包括source, sink, processor和job

Modules

Modules

• Source: 源通过轮询外部资源，或者由事件触发。它只提供输出。在一个流定义中，第一个模块必须是源。
• Processor: 处理器用于执行某特定类型的任务，它使用消息作为输入并产生一个新的消息。因此它即需要输入也需要输出。
• Sink: 消费输入的消息并将数据输出到外部资源，最终终止该流。
• A job module implements a Spring Batch job enabled for Spring XD.

Shell commands

Pipes and filters

A simple linear stream consists of a sequence of modules. Typically an Input Source, (optional) Processing Steps, and an Output Sink. As a simple example consider the collection of data from an HTTP Source writing to a File Sink. Using the DSL the stream description is:

Module parameters

Each module may take parameters. The parameters supported by a module are defined by the module implementation. As an example the http source module exposes port setting which allows the data ingestion port to be changed from the default value.

Module parameters

Streams are composed of modules which encapsulate a unit of work into a reusable component. A job in Spring XD must also be implemented as a module.

Named channels

Streams are composed of modules which encapsulate a unit of work into a reusable component. A job in Spring XD must also be implemented as a module.

其他

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