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Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
Toolkits
A toolkit is a set of SPL artifacts, which are organized into a package. Toolkits make SPL or native functions and primitive or composite operators reusable across different applications.
Toolkits
Toolkit com.teracloud.streams.topology 4.0.0

Welcome
Learn about the core capabilities of Teracloud® Streams, its architecture, and key concepts.
Installing
Use this information to install, upgrade, and uninstall the Teracloud® Streams product.
Configuring
Create a basic or an enterprise domain which is a single point for configuring and managing common resources, security, and instances.
Administering
Administer the product by using the Teracloud® Streams graphical user interface, APIs, or the streamtool command-line interface.
Developing
Develop stream applications with the Streams Processing Language (SPL), Java, and Python.
Troubleshooting
Resolve problems with Teracloud® Streams using the troubleshooting tools provided with the product as well as the resources offered by Teracloud Support.
Reference
Find details on the SPL language, toolkits, APIs, commands, and more.
- APIs
  Application programming interfaces (APIs) provide functions that simplify applications development.
- Job configuration overlays
  You can specify or change configuration parameters when you use the submitjob or updateoperators operations. The settings control submission constraints, host constraints and locations, and operator status. Parameters are captured and updated in the configuration JSON file. When you change the values in the job configuration overlay file, the changes override any previously set values.
- Commands
  Teracloud® Streams provides a number of commands you use to perform tasks.
- Operator model
  An operator model is an XML document that describes the basic properties of a primitive operator.
- Streams Processing Language (SPL)
  Streams Processing Language (SPL) is a distributed data flow composition language that is used in Teracloud® Streams. SPL has primitive types, program structures, and definitions that are tailored for streaming data.
- Toolkits
  A toolkit is a set of SPL artifacts, which are organized into a package. Toolkits make SPL or native functions and primitive or composite operators reusable across different applications.
  - Specialized toolkit requirements and restrictions
    Several of the specialized toolkits require RPMs that are not required by the Teracloud® Streams product. There are also toolkit restrictions on some platforms.
  - Toolkits
- SPLDOC markup
  You can use SPLDOC markup in the descriptions associated with the SPL artifacts in a toolkit. The spl-make-doc command generates HTML documentation from the marked up artifacts.
Glossary
Use this glossary to find terms and definitions for Teracloud® Streams.

Toolkit com.teracloud.streams.topology 4.0.0

General Information

Toolkit providing mechanisms to build Streams applications in other programming languages, with Java and Python support.

While the majority of the toolkit provides APIs for other programming languages to write Streams applications, the toolkit does provide some SPL composite operators to allow for Topic-based PubSub mechanisms.

Java

Java Application API - A library that allows the definition and execution of streaming applications implemented in Java. Applications use Java code to process tuples and tuples are Java objects.

See the Java Application API for Streams for details.

SPL

Topic based Publish and Subscribe operators provide the mechanism to exchange streams between applications regardles of the thier implementation language. SPL types are provided that allow interchange with applications implemented in other languages.

Python

Python Application API - A module that allows the definition and execution of streaming applications implemented in Python. Applications use Python code to process tuples and tuples are Python objects.

Python functions as SPL operators - A Python function can be simply turned into an SPL operator to allow tuple processing using Python.

See the documentation under com.teracloud.streams.topology.python for details.

Release notes

Version: 4.0.0
Required Product Version: 7.2.0.0

Indexes


Namespaces
Operators
Functions
Types

Namespaces

com.teracloud.streams.topology

Stream types supporting interchange of streams between Streams applications implemented in different languages.

Types

com.teracloud.streams.topology.python

Python Support: Support for Python with Streams.

com.teracloud.streams.topology.topic

Topic based publish-subscribe model supporting a microservice architecture style for Streams applications.

Operators

Functions