Caution

This extension was created for educational purposes and has undergone no testing. It is neither supported nor endorsed by PTC.

ThingWorx Service Executor extension

This extension allows to define synchonous Script Services that will be executed in their own thread. It was created to run a Script Service within its own transaction and workaround ThingWorx automatic transaction handling.

Key capabilities

• The Service execution can time out and be interrupted
• Every invocation of the Service operates within its own transaction

Usage

1. Import the thingworx-executor-extension Extension
2. Create a Thing that extends ServiceExecutorTemplate
3. Define a synchronous service on that thing (with no restrictions)
4. Invoke that service like any other Service (from REST, WS , another Service Script, ...)

• Each ServiceExecutor thing starts an FixedThreadPool Executor. Limit the number of ServiceExecutor things if you don't want to spawn too many threads.
  • the thread pool count is configurable from the thing's Configuration tab (default=3).
• The services execution is blocking with timeout. The same timeout is used for all the services on that thing.
  • the timeout is configurable from the thing's Configuration tab (default=30sec).

Implementation info

ServiceExecutorTemplate is just overriding the processServiceRequest() and processAPIServiceRequest() methods