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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.drools.util;
import java.io.File;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
import org.drools.compiler.kie.builder.impl.InternalKieModule;
import org.drools.compiler.kproject.models.KieModuleModelImpl;
import org.kie.api.KieServices;
import org.kie.api.builder.KieBuilder;
import org.kie.api.builder.KieFileSystem;
import org.kie.api.builder.Message;
import org.kie.api.builder.ReleaseId;
import org.kie.api.builder.model.KieModuleModel;
import org.kie.scanner.MavenRepository;
/**
* Kie related utilities.
*/
public class KieUtils {
private KieUtils() {
throw new IllegalStateException("Utility class");
}
/**
* Installs a rules artifact in the local maven repository.
*
* @param kmodule kmodule specification
* @param pom pom
* @param drlKJarPath path used in kjar drl to the actual drl
* @param drl rules in drl language
*
* @return releaseId result o a sucessful installation
* @throws IOException error accessing necessary resources
*/
public static ReleaseId installArtifact(String kmodule, String pom, String drlKJarPath,
String drl) throws IOException {
KieModuleModel kieModule = KieModuleModelImpl.fromXML(kmodule);
final KieFileSystem kieFileSystem = KieServices.Factory.get().newKieFileSystem();
kieFileSystem.writeKModuleXML(kieModule.toXML());
kieFileSystem.writePomXML(pom);
kieFileSystem.write(drlKJarPath, drl);
KieBuilder kieBuilder = kieBuild(kieFileSystem);
Path pomPath = Files.createTempFile("policy-core-", ".pom");
Files.write(pomPath, pom.getBytes(StandardCharsets.UTF_8));
File pomFile = pomPath.toFile();
pomFile.deleteOnExit();
ReleaseId releaseId = kieBuilder.getKieModule().getReleaseId();
MavenRepository.getMavenRepository()
.installArtifact(releaseId,
(InternalKieModule) kieBuilder.getKieModule(),
pomFile);
return releaseId;
}
/**
* Installs a rules artifact in the local maven repository.
*
* @param kmodule kmodule specification
* @param pom pom
* @param drlKJarPath path used in kjar drl to the actual drl
* @param drl rules in drl language
*
* @return releaseId result o a sucessful installation
* @throws IOException error accessing necessary resources
*/
public static ReleaseId installArtifact(File kmodule, File pom, String drlKJarPath, File drl) throws IOException {
KieModuleModel kieModule = KieModuleModelImpl.fromXML(kmodule);
final KieFileSystem kieFileSystem = KieServices.Factory.get().newKieFileSystem();
kieFileSystem.writeKModuleXML(kieModule.toXML());
kieFileSystem.writePomXML(new String(Files.readAllBytes(pom.toPath())));
kieFileSystem.write(drlKJarPath, new String(Files.readAllBytes(drl.toPath())));
KieBuilder kieBuilder = kieBuild(kieFileSystem);
ReleaseId releaseId = kieBuilder.getKieModule().getReleaseId();
MavenRepository.getMavenRepository()
.installArtifact(releaseId, (InternalKieModule) kieBuilder.getKieModule(), pom);
return releaseId;
}
private static KieBuilder kieBuild(KieFileSystem kieFileSystem) {
KieBuilder kieBuilder = KieServices.Factory.get().newKieBuilder(kieFileSystem);
List<Message> messages = kieBuilder.buildAll().getResults().getMessages();
if (messages != null && !messages.isEmpty()) {
throw new IllegalArgumentException(messages.toString());
}
return kieBuilder;
}
}
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