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/*
* Copyright © 2019 IBM.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onap.ccsdk.cds.controllerblueprints.core.service
import org.onap.ccsdk.cds.controllerblueprints.core.BlueprintProcessorException
import org.springframework.context.ApplicationContext
import org.springframework.context.ConfigurableApplicationContext
import kotlin.reflect.KClass
/**
* Generic Bluepring Dependency Service, which will be used mainly in scripts.
* This will be initialised only once during the Application startup.
* Function modules, shall add their own dependency function names as an extension function.
*
* @author Brinda Santh
*/
object BlueprintDependencyService {
lateinit var applicationContext: ApplicationContext
fun inject(applicationContext: ApplicationContext) {
BlueprintDependencyService.applicationContext = applicationContext
}
/** Used to inject [instance] into spring application context for the [key],
* Use this method only for testing
* */
fun registerSingleton(key: String, instance: Any) {
val configurableApplicationContext = applicationContext as ConfigurableApplicationContext
configurableApplicationContext.beanFactory.registerSingleton(key, instance)
}
inline fun <reified T> instance(name: String): T {
return applicationContext.getBean(name) as? T
?: throw BlueprintProcessorException("failed to get instance($name)")
}
inline fun <reified T> instance(type: Class<T>): T {
return applicationContext.getBean(type)
?: throw BlueprintProcessorException("failed to get instance($type)")
}
inline fun <reified T> instance(type: KClass<*>): T {
return applicationContext.getBean(type.java) as? T
?: throw BlueprintProcessorException("failed to get instance($type)")
}
}
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