1 files changed, 62 insertions, 0 deletions
diff --git a/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/service/BluePrintDependencyService.kt b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/service/BluePrintDependencyService.kt
new file mode 100644
index 000000000..e8457283e
--- /dev/null
+++ b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/service/BluePrintDependencyService.kt
@@ -0,0 +1,62 @@
+/*
+ *  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)")
+    }
+}