Add csar Handler

Add a csar handler to save the Csar downloaded from SDC

Issue-ID: CLAMP-81
Change-Id: I59d33ea3754e8e6acbe107c32fdcf83c1f236171
Signed-off-by: Determe, Sebastien (sd378r) <sd378r@intl.att.com>

2 files changed, 165 insertions, 0 deletions

diff --git a/src/main/java/org/onap/clamp/clds/exception/sdc/controller/CsarHandlerException.java b/src/main/java/org/onap/clamp/clds/exception/sdc/controller/CsarHandlerException.java
new file mode 100644
index 000000000..16fd77984
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/exception/sdc/controller/CsarHandlerException.java
@@ -0,0 +1,55 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.exception.sdc.controller;
+
+/**
+ * Exception during Csar operations.
+ */
+public class CsarHandlerException extends Exception {
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = -7628640776124409155L;
+
+    /**
+     * @param message
+     *            The message to dump
+     * @param cause
+     *            The Throwable cause object
+     */
+    public CsarHandlerException(final String message) {
+        super(message);
+    }
+
+    /**
+     * @param message
+     *            The message to dump
+     * @param cause
+     *            The Throwable cause object
+     */
+    public CsarHandlerException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarHandler.java b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarHandler.java
new file mode 100644
index 000000000..56c8530cc
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/sdc/controller/installer/CsarHandler.java
@@ -0,0 +1,110 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.sdc.controller.installer;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+
+import org.onap.clamp.clds.exception.sdc.controller.CsarHandlerException;
+import org.onap.clamp.clds.exception.sdc.controller.SdcArtifactInstallerException;
+import org.onap.clamp.clds.sdc.controller.SdcSingleController;
+import org.openecomp.sdc.api.notification.IArtifactInfo;
+import org.openecomp.sdc.api.notification.INotificationData;
+import org.openecomp.sdc.api.results.IDistributionClientDownloadResult;
+import org.openecomp.sdc.tosca.parser.api.ISdcCsarHelper;
+import org.openecomp.sdc.tosca.parser.exceptions.SdcToscaParserException;
+import org.openecomp.sdc.tosca.parser.impl.SdcToscaParserFactory;
+
+/**
+ * CsarDescriptor that will be used to deploy in CLAMP.
+ */
+public class CsarHandler {
+
+    private static final EELFLogger logger = EELFManager.getInstance().getLogger(SdcSingleController.class);
+    private IArtifactInfo artifactElement;
+    private String filePath;
+    private String controllerName;
+    private SdcToscaParserFactory factory = SdcToscaParserFactory.getInstance();
+    private ISdcCsarHelper sdcCsarHelper;
+    public static final String CSAR_TYPE = "TOSCA_CSAR";
+    private String csarPath;
+
+    public CsarHandler(INotificationData iNotif, String controller, String sdcCsarPath) throws CsarHandlerException {
+        this.csarPath = sdcCsarPath;
+        this.controllerName = controller;
+        this.artifactElement = searchForUniqueCsar(iNotif);
+        this.filePath = buildFilePathForCsar(artifactElement);
+    }
+
+    private String buildFilePathForCsar(IArtifactInfo artifactElement) {
+        return csarPath + "/" + controllerName + "/" + artifactElement.getArtifactName();
+    }
+
+    private IArtifactInfo searchForUniqueCsar(INotificationData iNotif) throws CsarHandlerException {
+        List<IArtifactInfo> serviceArtifacts = iNotif.getServiceArtifacts();
+        for (IArtifactInfo artifact : serviceArtifacts) {
+            if (artifact.getArtifactType().equals(CSAR_TYPE)) {
+                return artifact;
+            }
+        }
+        throw new CsarHandlerException("Unable to find a CSAR in the Sdc Notification");
+    }
+
+    public void save(IDistributionClientDownloadResult resultArtifact)
+            throws SdcArtifactInstallerException, SdcToscaParserException {
+        try {
+            logger.info("Writing CSAR file : " + artifactElement.getArtifactURL() + " UUID "
+                    + artifactElement.getArtifactUUID() + ")");
+            Path path = Paths.get(filePath);
+            Files.createDirectories(path.getParent());
+            Files.createFile(path);
+            try (FileOutputStream outFile = new FileOutputStream(filePath)) {
+                outFile.write(resultArtifact.getArtifactPayload(), 0, resultArtifact.getArtifactPayload().length);
+            }
+            sdcCsarHelper = factory.getSdcCsarHelper(filePath);
+        } catch (IOException e) {
+            throw new SdcArtifactInstallerException(
+                    "Exception caught when trying to write the CSAR on the file system to " + filePath, e);
+        }
+    }
+
+    public IArtifactInfo getArtifactElement() {
+        return artifactElement;
+    }
+
+    public String getFilePath() {
+        return filePath;
+    }
+
+    public ISdcCsarHelper getSdcCsarHelper() {
+        return sdcCsarHelper;
+    }
+}