1 files changed, 56 insertions, 0 deletions
diff --git a/asdctool/src/main/java/org/openecomp/sdc/asdctool/cli/CLITool.java b/asdctool/src/main/java/org/openecomp/sdc/asdctool/cli/CLITool.java
new file mode 100644
index 0000000000..053596d229
--- /dev/null
+++ b/asdctool/src/main/java/org/openecomp/sdc/asdctool/cli/CLITool.java
@@ -0,0 +1,56 @@
+package org.openecomp.sdc.asdctool.cli;
+
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.CommandLineParser;
+import org.apache.commons.cli.DefaultParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * abstract base class to extend when implementing a cli tool
+ */
+public abstract class CLITool {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CLITool.class);
+
+    public CLIToolData init(String[] args) {
+        CommandLine commandLine = initCmdLineOptions(args);
+        return new CLIToolData(commandLine);
+    }
+
+    private CommandLine initCmdLineOptions(String[] args) {
+        Options options = buildCmdLineOptions();
+        CommandLineParser parser = new DefaultParser();
+        try {
+            return parser.parse( options, args );
+        }
+        catch( ParseException exp ) {
+            LOGGER.error("Parsing failed.  Reason: " + exp.getMessage() );
+            usageAndExit(options);
+            return null;
+        }
+    }
+
+    private void usageAndExit(Options options) {
+        HelpFormatter formatter = new HelpFormatter();
+        formatter.printHelp(commandName(), options );
+        System.exit(1);
+    }
+
+    /**
+     *
+     * @return all command line options required by this command line tool
+     */
+    protected abstract Options buildCmdLineOptions();
+
+    /**
+     *
+     * @return the command name
+     */
+    protected abstract String commandName();
+
+
+}