Package com.netflix.spinnaker.kork.web.selector.v2

Class SelectableService<T>

  • Type Parameters:
    T - the type of service to be selected
    public class SelectableService<T>
extends java.lang.Object
    Provides support for sharding a service based on SelectableService.Parameter. Example of a service definition: 
     bakery:
  baseUrl: http://bakery.com
  altBakeryApiEnabled: false
  timeoutMs: 3000
  baseUrls:
  - baseUrl: http://alt-bakery.us-west-x.com
    priority: 1
    config:
      altBakeryApiEnabled: true
      maxItemsCached: 10
    parameters:
    - name: region
      values:
      - us-west-1
      - us-west-2
  - baseUrl: http://alt-bakery.other.com
    priority: 2
    config:
      altBakeryApiEnabled: true
    parameters:
    - name: artifactType
      values:
      - RPM
    - name: baseOS
      values:
      - centOS
    - name: user
      values:
      - regx:^[a-f].+@netflix.com
    Usage: 
    
 val config = mapOf("timeoutMs", 3000)
 val selectableBakery: SelectableService<BakeryService> = SelectableService(
   baseUrls: properties.baseUrls,
   defaultService: bakery,
   defaultConfig: config,
   getServiceByUrlFx: { url -> getService(url)}
 )

 // select by artifact type
 val authenticatedUser = "alice@netflix.com"
 val params = listOf(Parameter("artifactType", listOf("RPM")), Parameter("user", listOf(authenticatedUser)))
 val bakery = selectableBakery.byParameters(params)
 val result = bakery.getService().createBake(request)

 // configuration {@link BaseUrl#config} attributes for each service definition are accessible like this
 if (bakery.config["altBakeryApiEnabled"]) {
     // Do interesting things
 }

 assert bakery.baseUrl == "http://alt-bakery.other.com"
 assert bakery.config == mapOf("timeoutMs" to 3000, "altBakeryApiEnabled" to true)