An example project that presents request scoped component dependencies. The endpoints test the existence of a HTTP status code by querying https://httpstatuses.com
The project compares passing the value of the X-Flow-Id header to the web service dependencies in two different ways:
- explicitly as an extra method parameter to the business logic (service.clj) and the web service client (client.clj)
- having a separate stuartsierra/component dependency for the flow-id in the web service client (client-2.clj). In this latter scenario the business logic (service-2.clj) does not have to know about the flow-id.
Project based on Friboo library.
Run the application:
$ lein repl
user=> (reset)
For REPL-driven interactive development configuration variables can be provided in dev-config.edn file,
which will be read on each system restart.
$ lein test
$ lein uberjar
$ lein run
The following configuration environment variables are available:
| Variable | Meaning | Default | Example |
|---|---|---|---|
| API_EXAMPLE_PARAM | Example parameter with :api- prefix |
bar |
foo |
Calling the endpoint that passes flow-id as a parameter to the business logic and finally to the web service client method.
http get http://localhost:8080/exists/201 X-Flow-Id:asdf123456
Calling the endpoint that has flow-id as a request scoped dependency
http get http://localhost:8080/exists-with-fid-component/201 X-Flow-Id:asdf123456
Copyright © 2018 Oskari Porkka
Distributed under the MIT License.