Splot for Java is an experimental set of Java libraries implementing the Splot Object Model (SOM), enabling easy-to-use monitoring, control, and thing-to-thing/machine-to-machine behaviors. It is broken down into five subprojects:

• splot-base: Provides the base classes and interfaces for the Splot Object Model.
• splot-processor: An annotation processor for processing trait definitions.
• splot-traits: A standard set of defined traits.
• splot-local: Classes for implementing local things, as well as a local technology implementation.
• smcp: A library for using the experimental CoAP-based Splot Monitoring and Control Protocol using the Splot Object Model as implemented in splot-base.

Splot for Java should be considered experimental and should not yet be considered production-ready. This is an early release for testing and discussion.

The ultimate goal for Splot is the development of an object model, API, and protocol for IoT devices to facilitate straightforward, easy to use machine-to-machine/thing-to-thing behaviors that are configured locally and do not rely on cloud infrastructure.

• Uses open standards like CoAP, CBOR, etc.
• Fully working discovery, observing, groups, scenes, transitions, etc.
• Type-safe property API
• Easy to implement new things
• Over 200 unit tests and growing.
• In-band-manageable automation primitives

• No native C/C++ implementation available yet.
• No transport-layer security yet, security currently relies on link-layer security.
• Java API is experimental and subject to change.

• Support for Automation Pairing and Automation Rules.
• Native C implementation for SMCP that works on highly constrained devices, based on libnyoci
• Splot Security Model Development
  • Defines how native Splot/SMCP devices will securely operate.
  • Broad strokes worked out, but details still being defined.
  • Will likely use COSE, OSCORE, possibly DTLS under certain circumstances.

• Splot Design Documentation
• API Javadoc
• Github Project

• SMCP Example Server
• Light Bulb Example
• Coffee Machine Protocol Example

• CborTree
• CoapBlaster

In general, you do not need to build and install this project in order to use it: by simply adding the appropriate dependencies to your project's build.gradle or pom.xml file, the appropriate jar files should be automatically downloaded.

Gradle:

dependencies {
  compile 'com.google.iot.m2m:splot-base:0.02.00'
  compile 'com.google.iot.m2m:splot-traits:0.02.00'
  compile 'com.google.iot.m2m:splot-local:0.02.00'
  compile 'com.google.iot.m2m:smcp:0.02.00'
}

Maven:

<dependency>
  <groupId>com.google.iot.m2m</groupId>
  <artifactId>splot-base</artifactId>
  <version>0.02.00</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.google.iot.m2m</groupId>
  <artifactId>splot-traits</artifactId>
  <version>0.02.00</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.google.iot.m2m</groupId>
  <artifactId>splot-local</artifactId>
  <version>0.02.00</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>com.google.iot.m2m</groupId>
  <artifactId>smcp</artifactId>
  <version>0.02.00</version>
  <scope>compile</scope>
</dependency>

This project uses Maven for building. Once Maven is installed, you should be able to build and install the project by doing the following:

mvn verify
mvn install

When building the project yourself, the version field for the built artifacts will be HEAD-SNAPSHOT.

Note that the master branch of this project depends on CborTree and CoapBlaster, so you may need to download, build, and install those projects first.

Splot for Java is released under the Apache 2.0 license.

Copyright 2019 Google Inc.

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.

This is not an officially supported Google product.