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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
*
* 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.apps.controllerblueprints.scripts
import org.onap.ccsdk.apps.controllerblueprints.core.BluePrintProcessorException
import org.slf4j.LoggerFactory
import java.util.*
import kotlin.script.experimental.api.*
import kotlin.script.experimental.host.BasicScriptingHost
import kotlin.script.experimental.jvm.defaultJvmScriptingHostConfiguration
import kotlin.script.experimental.jvmhost.JvmScriptCompiler
import kotlin.script.experimental.jvmhost.impl.withDefaults
val blueprintScriptCompiler = JvmScriptCompiler(defaultJvmScriptingHostConfiguration,
BluePrintsCompilerProxy(defaultJvmScriptingHostConfiguration.withDefaults()))
open class BlueprintScriptingHost(evaluator: ScriptEvaluator) : BasicScriptingHost(blueprintScriptCompiler, evaluator) {
override fun eval(
script: SourceCode,
scriptCompilationConfiguration: ScriptCompilationConfiguration,
configuration: ScriptEvaluationConfiguration?
): ResultWithDiagnostics<EvaluationResult> =
runInCoroutineContext {
compiler(script, scriptCompilationConfiguration)
.onSuccess {
evaluator(it, configuration)
}.onFailure { failedResult ->
val messages = failedResult.reports?.joinToString("\n")
throw BluePrintProcessorException(messages)
}
}
}
open class BluePrintScriptEvaluator(private val scriptClassName: String) : ScriptEvaluator {
private val log = LoggerFactory.getLogger(BluePrintScriptEvaluator::class.java)!!
override suspend operator fun invoke(
compiledScript: CompiledScript<*>,
scriptEvaluationConfiguration: ScriptEvaluationConfiguration?
): ResultWithDiagnostics<EvaluationResult> =
try {
log.debug("Getting script class name($scriptClassName) from the compiled sources ")
val bluePrintCompiledScript = compiledScript as BluePrintCompiledScript
bluePrintCompiledScript.scriptClassFQName = scriptClassName
val res = compiledScript.getClass(scriptEvaluationConfiguration)
when (res) {
is ResultWithDiagnostics.Failure -> res
is ResultWithDiagnostics.Success -> {
val scriptClass = res.value
val args = ArrayList<Any?>()
scriptEvaluationConfiguration?.get(ScriptEvaluationConfiguration.providedProperties)?.forEach {
args.add(it.value)
}
scriptEvaluationConfiguration?.get(ScriptEvaluationConfiguration.implicitReceivers)?.let {
args.addAll(it)
}
scriptEvaluationConfiguration?.get(ScriptEvaluationConfiguration.constructorArgs)?.let {
args.addAll(it)
}
val instance = scriptClass.java.constructors.single().newInstance(*args.toArray())
?: throw BluePrintProcessorException("failed to create instance from the script")
log.info("Created script instance of type ${instance.javaClass}")
ResultWithDiagnostics.Success(EvaluationResult(ResultValue.Value(scriptClass.qualifiedName!!,
instance, "", instance),
scriptEvaluationConfiguration))
}
}
} catch (e: Throwable) {
ResultWithDiagnostics.Failure(e.asDiagnostics("Error evaluating script"))
}
}
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