An example showing how to start long-running services on application startup with Ratpack.
This example starts a long-running service in the background, on Ratpack application startup, that prints the message configured in config.yaml to the console.
Start the example by running the following Gradle command:
$ ./gradlew run
Once the application is running you should see something similar to the following in your console:
[main] INFO ratpack.server.RatpackServer - Starting server...
[main] INFO ratpack.server.RatpackServer - Building registry...
[main] INFO ratpack.server.RatpackServer - Initializing 1 services...
[ratpack-compute-1-1] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Starting ExampleService
[Timer-0] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Hello from the ExampleService! - 1514513619293
[main] INFO ratpack.server.RatpackServer - Ratpack started for http://localhost:5050
[Timer-0] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Hello from the ExampleService! - 1514513620298
[Timer-0] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Hello from the ExampleService! - 1514513621301
[Timer-0] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Hello from the ExampleService! - 1514513622304
[Timer-0] INFO com.github.gregwhitaker.ratpackservice.example.services.ExampleService - Hello from the ExampleService! - 1514513623308
Point your web browser to http://localhost:5050 to access the test endpoint.
For bugs, questions, and discussions please use the Github Issues.
MIT License
Copyright (c) 2017 Greg Whitaker
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.