RxJTango

Reactive Streams for Tango Events

The intention of this project is to implement reactive streams for Tango Controls.

This will be done following reactive-streams-jvm specification.

The ultimate goal is to allow clients to executes Tango Controls sequences using builder pattern:

new TangoClient()
    .executeCommand(host,device,command,argin)
    .writeAttribute(host,device,attr,value)
    .executeCommand(host,device,command1,argin)
    .readAttribute(host,device,attr2)
    .subscribe(...);

Note: host, device etc can be of any valid value, i.e. we can execute command Z on host X, device Y then write attribute C on host A, device B etc

The above example builds a sequence of actions terminated by the subscribe method. Under the hood it chains a number of Publisher's. Subscriber will get the results of each step in a stream.

Concerns: pass the result of the previous step

Another "straightforward" application of the streams is Tango events.

Client should be able to combine multiple event streams, filter them, map etc

Usage

Add GitHub and Bintray maven repos to your pom.xml

    <repositories>
        <repository>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <id>github</id>
            <url>https://maven.pkg.github.com/Ingvord/RxJTango</url>
        </repository>        
        <repository>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <id>bintray-release</id>
            <name>bintray</name>
            <url>http://dl.bintray.com/hzgde/hzg-wpn-projects</url>
        </repository>
    </repositories>

Add dependency:

<dependency>
  <groupId>org.tango-controls</groupId>
  <artifactId>RxJTango</artifactId>
  <version>0.1</version>
</dependency>