add SDC client and reception handle

[multicloud/framework.git] / artifactbroker / reception / src / main / java / org / onap / policy / distribution / reception / handling / PluginHandler.java

diff --git a/artifactbroker/reception/src/main/java/org/onap/policy/distribution/reception/handling/PluginHandler.java b/artifactbroker/reception/src/main/java/org/onap/policy/distribution/reception/handling/PluginHandler.java
new file mode 100644 (file)
index 0000000..e7e77ba
--- /dev/null
+++ b/artifactbroker/reception/src/main/java/org/onap/policy/distribution/reception/handling/PluginHandler.java
@@ -0,0 +1,88 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.reception.handling;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.common.parameters.ParameterService;
+import org.onap.policy.distribution.forwarding.ArtifactForwarder;
+import org.onap.policy.distribution.forwarding.parameters.ArtifactForwarderParameters;
+import org.onap.policy.distribution.reception.decoding.PluginInitializationException;
+import org.onap.policy.distribution.reception.parameters.PluginHandlerParameters;
+
+/**
+ * Handles the plugins to policy distribution.
+ */
+public class PluginHandler {
+
+    private static final Logger LOGGER = FlexLogger.getLogger(PluginHandler.class);
+
+    private Collection<ArtifactForwarder> artifactForwarders;
+
+    /**
+     * Create an instance to instantiate plugins based on the given parameter group.
+     *
+     * @param parameterGroupName the name of the parameter group
+     * @throws PluginInitializationException exception if it occurs
+     */
+    public PluginHandler(final String parameterGroupName) throws PluginInitializationException {
+        final PluginHandlerParameters params = ParameterService.get(parameterGroupName);
+        initArtifactForwarders(params.getArtifactForwarders());
+    }
+
+    /**
+     * Get the policy forwarders.
+     *
+     * @return the policy forwarders
+     */
+    public Collection<ArtifactForwarder> getArtifactForwarders() {
+        return artifactForwarders;
+    }
+
+    /**
+     * Initialize policy forwarders.
+     *
+     * @param artifactForwarderParameters exception if it occurs
+     * @throws PluginInitializationException exception if it occurs
+     */
+    @SuppressWarnings("unchecked")
+    private void initArtifactForwarders(final Map<String, ArtifactForwarderParameters> artifactForwarderParameters)
+            throws PluginInitializationException {
+        artifactForwarders = new ArrayList<>();
+        for (final ArtifactForwarderParameters forwarderParameters : artifactForwarderParameters.values()) {
+            try {
+                final Class<ArtifactForwarder> artifactForwarderClass =
+                        (Class<ArtifactForwarder>) Class.forName(forwarderParameters.getForwarderClassName());
+                final ArtifactForwarder artifactForwarder = artifactForwarderClass.newInstance();
+                artifactForwarder.configure(forwarderParameters.getForwarderConfigurationName());
+                artifactForwarders.add(artifactForwarder);
+            } catch (final ClassNotFoundException | InstantiationException | IllegalAccessException exp) {
+                LOGGER.error("exception occured while initializing forwarders", exp);
+                throw new PluginInitializationException(exp.getMessage(), exp.getCause());
+            }
+        }
+    }
+
+}