diff options
Diffstat (limited to 'ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/scripts/BluePrintCompilerCache.kt')
-rw-r--r-- | ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/scripts/BluePrintCompilerCache.kt | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/scripts/BluePrintCompilerCache.kt b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/scripts/BluePrintCompilerCache.kt new file mode 100644 index 000000000..fbfcfb94f --- /dev/null +++ b/ms/blueprintsprocessor/modules/blueprints/blueprint-core/src/main/kotlin/org/onap/ccsdk/cds/controllerblueprints/core/scripts/BluePrintCompilerCache.kt @@ -0,0 +1,76 @@ +/* + * 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.scripts + +import com.google.common.cache.CacheBuilder +import com.google.common.cache.CacheLoader +import com.google.common.cache.LoadingCache +import org.onap.ccsdk.cds.controllerblueprints.core.BluePrintException +import org.onap.ccsdk.cds.controllerblueprints.core.logger +import org.onap.ccsdk.cds.controllerblueprints.core.normalizedFile +import java.net.URL +import java.net.URLClassLoader + +object BluePrintCompileCache { + val log = logger(BluePrintCompileCache::class) + + private val classLoaderCache: LoadingCache<String, URLClassLoader> = CacheBuilder.newBuilder() + .maximumSize(50) + .build(BluePrintClassLoader) + + fun classLoader(key: String): URLClassLoader { + return classLoaderCache.get(key) + } + + fun cleanClassLoader(key: String) { + if (hasClassLoader(key)) { + // Make sure to close all classloader loaded resources before we let go of it. + // This fixes a Delete failure message on filesystem that keeps locks on opened jars; + // like Windows and NFS. + classLoaderCache.get(key).close() + classLoaderCache.invalidate(key) + log.info("Cleaned compiled cache($key)") + } else { + log.warn("No compiled cache($key) present to clean.") + } + } + + fun hasClassLoader(key: String): Boolean { + return classLoaderCache.asMap().containsKey(key) + } +} + +object BluePrintClassLoader : CacheLoader<String, URLClassLoader>() { + + val log = logger(BluePrintClassLoader::class) + + override fun load(key: String): URLClassLoader { + log.info("loading compiled cache($key)") + val keyPath = normalizedFile(key) + if (!keyPath.exists()) { + throw BluePrintException("failed to load cache($key), missing files.") + } + val urls = arrayListOf<URL>() + keyPath.walkTopDown() + .filter { it.name.endsWith("cba-kts.jar") } + .forEach { + log.debug("Adding (${it.absolutePath}) to cache($key)") + urls.add(it.toURI().toURL()) + } + return URLClassLoader(urls.toTypedArray(), this.javaClass.classLoader) + } +} |