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scale
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Another example of a REST API with Akka HTTP
Download README (.md)
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Download README
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README.md
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scale
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# Scale  An example of [Akka HTTP 2.5.1](http://akka.io/docs/?_ga=2.132477901.2114488730.1495028763-1586046796.1493973640) library usage for building a REST service. The service itself takes median salary for the requested job title or related jobs from Glassdoor API. # What's implemented - routing, marshaling, unmarshalling - requests to external API of [Glassdoor](www.glassdoor.com) - testing with [akka-http-testkit](http://doc.akka.io/docs/akka-http/10.0.5/scala/http/routing-dsl/testkit.html) and [scalatest](http://www.scalatest.org/) (ScalaFutures included) - publishing to [Sonatype](oss.sonatype.org) ### application.conf Since Glassdoor provides information only for registered application we need to add keys to apps configuration. To get keys go to [Glassdoor API page](www.glassdoor.com/developer/index.htm) to register your application. Configuration in your app.conf file will look like this ```sh glassdoor { partner-id = "111111" key = "asdffff111" } ``` ### build.sbt If you want to use it as an external library by calling a service directly or adding the routes ```scala "com.github.danymarialee" %% "scale" % "1.0.0" ``` ### Usage by getting the code from github ```sbtshell sbt > run ``` Then you'll see something like ```sbtshell [info] Running up.scale.Main [scale-service-akka.actor.default-dispatcher-5] INFO akka.event.slf4j.Slf4jLogger - Slf4jLogger started ``` Now you cal call the service to get median salary ```sbtshell curl http://localhost:9000/salary?job_title=driver ``` => ```json { "data": { "title": "driver", "payMedian": 31000, "payCurrencyCode": "USD" }, "code": 0 } ``` Or for related job titles ```sbtshell curl http://localhost:9000/salary/related?job_title=driver ``` => ```json { "data": [ { "title": "truck driver", "payMedian": 46000, "payCurrencyCode": "USD" }, { "title": "delivery driver", "payMedian": 39000, "payCurrencyCode": "USD" }, { "title": "bus driver", "payMedian": 26500, "payCurrencyCode": "USD" } ], "code": 0 } ``` ### Usage by calling with SalaryService The SalaryService requires - ExecutionContext - ActorSystem - Materializer Those are implicits => means need to be in the scope ```scala import up.scale.services.SalaryService val service = new SalaryService() val exact = service.getJob("writer") // => Job val related = service.getRelated("writer") // => List[Job] ``` ### Domain ```scala case class Job(title: String, payMedian: Double, payCurrencyCode: String) ``` ### Testing ```sbtshell sbt > test ``` => ```sbtshell [test-salary-service-akka.actor.default-dispatcher-4] INFO akka.event.slf4j.Slf4jLogger - Slf4jLogger started [info] SalaryServiceTest: [info] The salary service [info] - should return one job [info] - should return related jobs [info] GlassdoorResourceTest: [info] The salary service [info] - should return one job [info] - should return related jobs [info] - should return error from external service for related jobs request [info] - should reject salary because of missing parameter job_title [info] - should reject related salaries because of missing parameter job_title [info] - should leave GET requests to other paths unhandled [info] Run completed in 4 seconds, 102 milliseconds. [info] Total number of tests run: 8 [info] Suites: completed 2, aborted 0 [info] Tests: succeeded 8, failed 0, canceled 0, ignored 0, pending 0 [info] All tests passed. [success] Total time: 5 s, completed May 17, 2017 5:43:56 PM ``` If you have any questions my Twitter handle [@besseifunction](https://twitter.com/besseifunction) ### Have fun!
