1 files changed, 151 insertions, 0 deletions
diff --git a/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java
new file mode 100644
index 000000000..0bf382ab1
--- /dev/null
+++ b/participant/participant-impl/participant-impl-dcae/src/main/java/org/onap/policy/clamp/controlloop/participant/dcae/main/startstop/ParticipantDcaeCommandLineArguments.java
@@ -0,0 +1,151 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * 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.clamp.controlloop.participant.dcae.main.startstop;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.net.URL;
+import java.util.Arrays;
+import javax.ws.rs.core.Response;
+import lombok.Getter;
+import lombok.Setter;
+import org.apache.commons.cli.CommandLine;
+import org.apache.commons.cli.DefaultParser;
+import org.apache.commons.cli.HelpFormatter;
+import org.apache.commons.cli.Option;
+import org.apache.commons.cli.Options;
+import org.apache.commons.cli.ParseException;
+import org.apache.commons.lang3.StringUtils;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopException;
+import org.onap.policy.clamp.controlloop.common.exception.ControlLoopRuntimeException;
+import org.onap.policy.clamp.controlloop.common.startstop.CommonCommandLineArguments;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+
+/**
+ * This class reads and handles command line parameters for the control loop runtime service.
+ *
+ */
+public class ParticipantDcaeCommandLineArguments {
+    private static final String FILE_MESSAGE_PREAMBLE = " file \"";
+    private static final int HELP_LINE_LENGTH = 120;
+
+    private final Options options;
+    private final CommonCommandLineArguments commonCommandLineArguments;
+
+    @Getter()
+    @Setter()
+    private String configurationFilePath = null;
+
+    /**
+     * Construct the options for the dcae participant.
+     */
+    public ParticipantDcaeCommandLineArguments() {
+        options = new Options();
+        commonCommandLineArguments = new CommonCommandLineArguments(options);
+    }
+
+    /**
+     * Construct the options for the CLI editor and parse in the given arguments.
+     *
+     * @param args The command line arguments
+     */
+    public ParticipantDcaeCommandLineArguments(final String[] args) {
+        // Set up the options with the default constructor
+        this();
+
+        // Parse the arguments
+        try {
+            parse(args);
+        } catch (final ControlLoopException e) {
+            throw new ControlLoopRuntimeException(Response.Status.NOT_ACCEPTABLE,
+                    "parse error on dcae participant parameters", e);
+        }
+    }
+
+    /**
+     * Parse the command line options.
+     *
+     * @param args The command line arguments
+     * @return a string with a message for help and version, or null if there is no message
+     * @throws ControlLoopException on command argument errors
+     */
+    public String parse(final String[] args) throws ControlLoopException {
+        // Clear all our arguments
+        setConfigurationFilePath(null);
+        CommandLine commandLine = null;
+        try {
+            commandLine = new DefaultParser().parse(options, args);
+        } catch (final ParseException e) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    "invalid command line arguments specified : " + e.getMessage());
+        }
+
+        // Arguments left over after Commons CLI does its stuff
+        final String[] remainingArgs = commandLine.getArgs();
+
+        if (remainingArgs.length > 0) {
+            throw new ControlLoopException(Response.Status.NOT_ACCEPTABLE,
+                    "too many command line arguments specified : " + Arrays.toString(args));
+        }
+
+        if (commandLine.hasOption('h')) {
+            return commonCommandLineArguments.help(Main.class.getName(), options);
+        }
+
+        if (commandLine.hasOption('v')) {
+            return commonCommandLineArguments.version();
+        }
+
+        if (commandLine.hasOption('c')) {
+            setConfigurationFilePath(commandLine.getOptionValue('c'));
+        }
+
+        return null;
+    }
+
+    /**
+     * Validate the command line options.
+     *
+     * @throws ControlLoopException on command argument validation errors
+     */
+    public void validate() throws ControlLoopException {
+        commonCommandLineArguments.validate(configurationFilePath);
+    }
+
+    /**
+     * Gets the full expanded configuration file path.
+     *
+     * @return the configuration file path
+     */
+    public String getFullConfigurationFilePath() {
+        return ResourceUtils.getFilePath4Resource(getConfigurationFilePath());
+    }
+
+    /**
+     * Check set configuration file path.
+     *
+     * @return true, if check set configuration file path
+     */
+    public boolean checkSetConfigurationFilePath() {
+        return !StringUtils.isEmpty(configurationFilePath);
+    }
+}