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authorDecheng Zhang <decheng.zhang@huawei.com>2021-02-19 08:49:21 -0500
committerDan Timoney <dtimoney@att.com>2021-02-22 20:35:33 +0000
commit103495d08e2f69f2d63389695f3d2a0d4a69630e (patch)
treeb8f11cc24ba2034e4162600c51777c00585fc8d2 /core
parente93adc2a73a42af34d2bb01411286f9c10d6bf82 (diff)
Creating prototype of SliTopologyUtils, a topology utility for simple topology manipulation.
Change-Id: I3c83eeb9c44f04a8d7b0e45429594de96f162c3d Signed-off-by: Decheng Zhang <decheng.zhang@huawei.com>
Diffstat (limited to 'core')
-rw-r--r--core/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/SliTopologyUtils.java108
1 files changed, 108 insertions, 0 deletions
diff --git a/core/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/SliTopologyUtils.java b/core/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/SliTopologyUtils.java
new file mode 100644
index 000000000..9cfc305c9
--- /dev/null
+++ b/core/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/SliTopologyUtils.java
@@ -0,0 +1,108 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : CCSDK
+ * ================================================================================
+ * 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.ccsdk.sli.core.slipluginutils;
+
+import org.apache.commons.lang3.StringUtils;
+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
+import org.onap.ccsdk.sli.core.sli.SvcLogicException;
+import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+
+public class SliTopologyUtils implements SvcLogicJavaPlugin {
+
+ private static final Logger LOG = LoggerFactory.getLogger(SliTopologyUtils.class);
+ public static final String SUCCESS_CONSTANT = "success";
+ public static final String FAILURE_CONSTANT = "failure";
+ public static final String NOT_FOUND_CONSTANT = "not-found";
+
+
+ public SliTopologyUtils(){};
+ /**
+ * Provides simple path computation functionality to Directed Graphs.
+ * <p>
+ * @param parameters HashMap<String,String> of parameters passed by the DG to this function
+ * <table border="1">
+ * <thead><th>parameter</th><th>Mandatory/Optional</th><th>description</th></thead>
+ * <tbody>
+ * <tr><td>pnfs-pfx</td><td>Mandatory</td><td>Prefix in context memory to get the pnf attributes from.</td></tr>
+ * <tr><td>links-pfx</td><td>Mandatory</td><td>Prefix in context memory to get the link attributes from.</td></tr>
+ * <tr><td>src-node</td><td>Mandatory</td><td>Source pnf name.</td></tr>
+ * <tr><td>dst-node</td><td>Mandatory</td><td>Destination pnf name.</td></tr>
+ * <tr><td>response-pfx</td><td>Mandatory</td><td>Prefix in context memory to populate the resulting attributes in.</td></tr>
+ * <tr><td>output-end-to-end-path</td><td>Optional</td><td>true or false to output end to end full path. If not included, only output cross domain path</td></tr>
+ * </tbody>
+ * </table>
+ * @param ctx Reference to context memory
+ * @throws SvcLogicException
+ */
+ public static String computePath(Map<String, String> parameters, SvcLogicContext ctx ) throws SvcLogicException {
+ try{
+ LOG.debug( "ENTERING Execute Node \"computePath\"" );
+
+ // Validate, Log, & read parameters
+ checkParameters(parameters, new String[]{ "pnfs-pfx", "links-pfx",
+ "src-node", "dst-node", "response-pfx"}, LOG);
+
+ return SUCCESS_CONSTANT;
+
+
+ } catch( Exception e ) {
+ throw new SvcLogicException( "An error occurred in the computePath Execute node", e );
+ } finally {
+ LOG.debug( "EXITING Execute Node \"computePath\"" );
+ }
+ }
+
+ /**
+ * Throws an exception and writes an error to the log file if a required
+ * parameters is not found in the parametersMap.
+ * <p>
+ * Use at the beginning of functions that can be called by Directed Graphs
+ * and can take parameters to verify that all parameters have been provided
+ * by the Directed Graph.
+ * @param parametersMap parameters Map passed to this node
+ * @param requiredParams Array of parameters required by the calling function
+ * @param log Reference to Logger to log to
+ * @throws SvcLogicException if a String in the requiredParams array is
+ * not a key in parametersMap.
+ * @since 1.0
+ */
+ public static final void checkParameters(Map<String, String> parametersMap, String[] requiredParams, Logger log) throws SvcLogicException {
+ if( requiredParams == null || requiredParams.length < 1){
+ log.debug("required parameters was empty, exiting early.");
+ return;
+ }
+ if (parametersMap == null || parametersMap.keySet().isEmpty()){
+ String errorMessage = "This method requires the parameters [" + StringUtils.join(requiredParams,",") + "], but no parameters were passed in.";
+ log.error(errorMessage);
+ throw new SvcLogicException(errorMessage);
+ }
+
+ for (String param : requiredParams) {
+ if (!parametersMap.containsKey(param)) {
+ String errorMessage = "Required parameter \"" + param + "\" was not found in parameter list.";
+ log.error(errorMessage);
+ log.error("Total list of required parameters is [" + StringUtils.join(requiredParams, ",") + "].");
+ throw new SvcLogicException(errorMessage);
+ }
+ }
+ }
+} \ No newline at end of file