Adding client full module to apex-pdp

Change-Id: Id6e4e37b7740eeb3d83998e596c0c963c93e64f2
Issue-ID: POLICY-864
Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>

7 files changed, 809 insertions, 0 deletions

diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRest.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRest.java
new file mode 100644
index 000000000..3a38dc082
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRest.java
@@ -0,0 +1,84 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+import org.glassfish.grizzly.http.server.HttpServer;
+import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
+import org.glassfish.jersey.media.multipart.MultiPartFeature;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.onap.policy.apex.model.utilities.Assertions;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * This class is used to launch the services. It creates a Grizzly embedded web server and runs the services.
+ */
+public class ApexServicesRest {
+    // Logger for this class
+    private static final XLogger logger = XLoggerFactory.getXLogger(ApexServicesRest.class);
+
+    // The HTTP server exposing JAX-RS resources defined in this application.
+    private HttpServer server;
+
+    /**
+     * Starts the HTTP server for the Apex services client on the default base URI and with the default REST packages
+     */
+    public ApexServicesRest() {
+        this(new ApexServicesRestParameters());
+    }
+
+    /**
+     * Starts the HTTP server for the Apex services client
+     *
+     * @param parameters: The Apex parameters to use to start the server
+     */
+    public ApexServicesRest(final ApexServicesRestParameters parameters) {
+        Assertions.argumentNotNull(parameters, "parameters may not be null");
+
+        logger.debug("Apex services RESTful client starting . . .");
+
+        // Create a resource configuration that scans for JAX-RS resources and providers
+        // in org.onap.policy.apex.client.full.rest package
+        final ResourceConfig rc = new ResourceConfig().packages(parameters.getRESTPackages());
+
+        // Add MultiPartFeature class for jersey-media-multipart
+        rc.register(MultiPartFeature.class);
+
+        // create and start a new instance of grizzly http server
+        // exposing the Jersey application at BASE_URI
+        server = GrizzlyHttpServerFactory.createHttpServer(parameters.getBaseURI(), rc);
+
+        // Add static content
+        server.getServerConfiguration().addHttpHandler(new org.glassfish.grizzly.http.server.CLStaticHttpHandler(
+                ApexServicesRest.class.getClassLoader(), "/webapp/"), parameters.getStaticPath());
+
+        logger.debug("Apex services RESTful client started");
+    }
+
+    /**
+     * Shut down the web server
+     */
+    public void shutdown() {
+        logger.debug("Apex services RESTful client shutting down . . .");
+        server.shutdown();
+        logger.debug("Apex services RESTful client shut down");
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestMain.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestMain.java
new file mode 100644
index 000000000..a9e5db9d0
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestMain.java
@@ -0,0 +1,207 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+import java.io.PrintStream;
+
+/**
+ * This class is the main class that is used to launch the Apex editor from the command line.
+ *
+ */
+public class ApexServicesRestMain {
+    /**
+     * The Enum EditorState holds the current state of the editor.
+     */
+    // Editor state
+    public enum EditorState {
+        /** The editor is stopped. */
+        STOPPED,
+        /** The editor is ready to run. */
+        READY,
+        /** The editor is getting ready to run. */
+        INITIALIZING,
+        /** The editor is running. */
+        RUNNING
+    };
+
+    private static final int EDITOR_RNNING_CHECK_TIMEOUT = 1000;
+
+    private EditorState state = EditorState.STOPPED;
+
+    // The Apex editor this class is running
+    private ApexServicesRest apexServices = null;
+
+    // The parameters for the editor
+    private ApexServicesRestParameters parameters = null;
+
+    // Output and error streams for messages
+    private final PrintStream outStream;
+
+    /**
+     * Main method, main entry point for command.
+     *
+     * @param args The command line arguments for the editor
+     */
+    public static void main(final String[] args) {
+        try {
+            final ApexServicesRestMain editorMain = new ApexServicesRestMain(args, System.out);
+            editorMain.init();
+        } catch (final Exception e) {
+            System.err.println(e.getMessage());
+        }
+    }
+
+    /**
+     * Constructor, kicks off the editor.
+     *
+     * @param args The command line arguments for the editor
+     * @param outStream The stream for output messages
+     */
+    public ApexServicesRestMain(final String[] args, final PrintStream outStream) {
+        // Save the streams for output and error
+        this.outStream = outStream;
+
+        // Editor parameter parsing
+        final ApexServicesRestParameterParser parser = new ApexServicesRestParameterParser();
+
+        try {
+            // Get and check the parameters
+            parameters = parser.parse(args);
+        } catch (final ApexServicesRestParameterException e) {
+            throw new ApexServicesRestParameterException(
+                    "Apex Editor REST endpoint (" + this.toString() + ") parameter error, " + e.getMessage() + '\n'
+                            + parser.getHelp(ApexServicesRestMain.class.getCanonicalName()));
+        }
+
+        if (parameters.isHelpSet()) {
+            throw new ApexServicesRestParameterException(parser.getHelp(ApexServicesRestMain.class.getCanonicalName()));
+        }
+
+        // Validate the parameters
+        final String validationMessage = parameters.validate();
+        if (validationMessage.length() > 0) {
+            throw new ApexServicesRestParameterException(
+                    "Apex Editor REST endpoint (" + this.toString() + ") parameters invalid, " + validationMessage
+                            + '\n' + parser.getHelp(ApexServicesRestMain.class.getCanonicalName()));
+        }
+
+        state = EditorState.READY;
+    }
+
+    /**
+     * Initialize the Apex editor.
+     */
+    public void init() {
+        outStream.println("Apex Editor REST endpoint (" + this.toString() + ") starting at "
+                + parameters.getBaseURI().toString() + " . . .");
+
+        try {
+            state = EditorState.INITIALIZING;
+
+            // Start the editor
+            apexServices = new ApexServicesRest(parameters);
+
+            // Add a shutdown hook to shut down the editor when the process is exiting
+            Runtime.getRuntime().addShutdownHook(new Thread(new ApexServicesRestShutdownHook()));
+
+            state = EditorState.RUNNING;
+
+            if (parameters.getTimeToLive() == ApexServicesRestParameters.INFINITY_TIME_TO_LIVE) {
+                outStream.println("Apex Editor REST endpoint (" + this.toString() + ") started at "
+                        + parameters.getBaseURI().toString());
+            } else {
+                outStream.println("Apex Editor REST endpoint (" + this.toString() + ") started");
+            }
+
+            // Find out how long is left to wait
+            long timeRemaining = parameters.getTimeToLive();
+            while (timeRemaining == ApexServicesRestParameters.INFINITY_TIME_TO_LIVE || timeRemaining > 0) {
+                // decrement the time to live in the non-infinity case
+                if (timeRemaining > 0) {
+                    timeRemaining--;
+                }
+
+                // Wait for a second
+                Thread.sleep(EDITOR_RNNING_CHECK_TIMEOUT);
+            }
+        } catch (final Exception e) {
+            outStream.println(
+                    "Apex Editor REST endpoint (" + this.toString() + ") failed at with error: " + e.getMessage());
+        } finally {
+            if (apexServices != null) {
+                apexServices.shutdown();
+                apexServices = null;
+            }
+            state = EditorState.STOPPED;
+        }
+    }
+
+    /**
+     * Get the editor state.
+     *
+     * @return the state
+     */
+    public EditorState getState() {
+        return state;
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see java.lang.Object#toString()
+     */
+    @Override
+    public String toString() {
+        final StringBuilder ret = new StringBuilder();
+        ret.append(this.getClass().getSimpleName()).append(": Config=[").append(parameters).append("], State=")
+                .append(this.getState());
+        return ret.toString();
+    }
+
+    /**
+     * Explicitly shut down the editor.
+     */
+    public void shutdown() {
+        if (apexServices != null) {
+            outStream.println("Apex Editor REST endpoint (" + this.toString() + ") shutting down");
+            apexServices.shutdown();
+        }
+        state = EditorState.STOPPED;
+        outStream.println("Apex Editor REST endpoint (" + this.toString() + ") shut down");
+    }
+
+    /**
+     * This class is a shutdown hook for the Apex editor command.
+     */
+    private class ApexServicesRestShutdownHook implements Runnable {
+        /*
+         * (non-Javadoc)
+         *
+         * @see java.lang.Runnable#run()
+         */
+        @Override
+        public void run() {
+            if (apexServices != null) {
+                apexServices.shutdown();
+            }
+        }
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterException.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterException.java
new file mode 100644
index 000000000..8b966b13f
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterException.java
@@ -0,0 +1,49 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+/**
+ * A run time exception used to report parsing and parameter input errors.
+ *
+ * User: ewatkmi Date: 31 Jul 2017
+ */
+public class ApexServicesRestParameterException extends IllegalArgumentException {
+    private static final long serialVersionUID = 6520231162404452427L;
+
+    /**
+     * Create an ApexServicesRestParameterException with a message
+     *
+     * @param message the message
+     */
+    public ApexServicesRestParameterException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Create an ApexServicesRestParameterException with a message and an exception.
+     *
+     * @param message the message
+     * @param throwable The exception that caused the exception
+     */
+    public ApexServicesRestParameterException(final String message, final Throwable throwable) {
+        super(message, throwable);
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterParser.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterParser.java
new file mode 100644
index 000000000..28b0d4cf4
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameterParser.java
@@ -0,0 +1,116 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.util.Arrays;
+
+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;
+
+/**
+ * This class reads and handles command line parameters to the Apex RESTful services
+ *
+ * User: ewatkmi Date: 31 Jul 2017
+ */
+public class ApexServicesRestParameterParser {
+    // Apache Commons CLI options
+    Options options;
+
+    /**
+     * Construct the options for the CLI RESTful services
+     */
+    public ApexServicesRestParameterParser() {
+        options = new Options();
+        options.addOption("h", "help", false, "outputs the usage of this command");
+        options.addOption(Option.builder("p").longOpt("port").desc("port to use for the Apex Services REST calls")
+                .hasArg().argName("PORT").required(false).type(Number.class).build());
+        options.addOption(Option.builder("t").longOpt("time-to-live")
+                .desc("the amount of time in seconds that the server will run for before terminating").hasArg()
+                .argName("TIME_TO_LIVE").required(false).type(Number.class).build());
+    }
+
+    /**
+     * Parse the command line options.
+     *
+     * @param args the arguments
+     * @return parsed parameters
+     */
+    public ApexServicesRestParameters parse(final String[] args) {
+        CommandLine commandLine = null;
+        try {
+            commandLine = new DefaultParser().parse(options, args);
+        } catch (final ParseException e) {
+            throw new ApexServicesRestParameterException(
+                    "invalid command line arguments specified : " + e.getMessage());
+        }
+
+        final ApexServicesRestParameters parameters = new ApexServicesRestParameters();
+        final String[] remainingArgs = commandLine.getArgs();
+
+        if (commandLine.getArgs().length > 0) {
+            throw new ApexServicesRestParameterException(
+                    "too many command line arguments specified : " + Arrays.toString(remainingArgs));
+        }
+
+        if (commandLine.hasOption('h')) {
+            parameters.setHelp(true);
+        }
+        try {
+            if (commandLine.hasOption('p')) {
+                parameters.setRESTPort(((Number) commandLine.getParsedOptionValue("port")).intValue());
+            }
+        } catch (final ParseException e) {
+            throw new ApexServicesRestParameterException("error parsing argument \"port\" :" + e.getMessage(), e);
+        }
+        try {
+            if (commandLine.hasOption('t')) {
+                parameters.setTimeToLive(((Number) commandLine.getParsedOptionValue("time-to-live")).longValue());
+            }
+        } catch (final ParseException e) {
+            throw new ApexServicesRestParameterException("error parsing argument \"time-to-live\" :" + e.getMessage(),
+                    e);
+        }
+
+        return parameters;
+    }
+
+    /**
+     * Get help information.
+     *
+     * @param mainClassName the main class name for the help output
+     * @return help string
+     */
+    public String getHelp(final String mainClassName) {
+        final StringWriter stringWriter = new StringWriter();
+        final PrintWriter stringPrintWriter = new PrintWriter(stringWriter);
+
+        final HelpFormatter helpFormatter = new HelpFormatter();
+        helpFormatter.printHelp(stringPrintWriter, 120, mainClassName + " [options...] ", "", options, 0, 0, "");
+
+        return stringWriter.toString();
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameters.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameters.java
new file mode 100644
index 000000000..17f0eac60
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ApexServicesRestParameters.java
@@ -0,0 +1,115 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+import java.net.URI;
+
+/**
+ * This class reads and handles command line parameters to the Apex RESTful services
+ *
+ * User: ewatkmi Date: 31 Jul 2017
+ */
+public class ApexServicesRestParameters {
+    public static final int DEFAULT_REST_PORT = 18989;
+    public static final int INFINITY_TIME_TO_LIVE = -1;
+
+    // Base URI the HTTP server will listen on
+    private static final String DEFAULT_SERVER_URI_ROOT = "http://localhost:";
+    private static final String DEFAULT_REST_PATH = "/apexservices/";
+    private static final String DEFAULT_STATIC_PATH = "/";
+
+    // Package that will field REST requests
+    public static final String[] DEFAULT_PACKAGES = new String[] { "org.onap.policy.apex.client.deployment.rest",
+            "org.onap.policy.apex.client.editor.rest", "org.onap.policy.apex.client.monitoring.rest" };
+
+    // The services parameters
+    private boolean helpSet = false;
+    private int restPort = DEFAULT_REST_PORT;
+    private long timeToLive = INFINITY_TIME_TO_LIVE;
+
+    public String validate() {
+        String validationMessage = "";
+        validationMessage += validatePort();
+        validationMessage += validateTimeToLive();
+
+        return validationMessage;
+    }
+
+    public URI getBaseURI() {
+        return URI.create(DEFAULT_SERVER_URI_ROOT + restPort + DEFAULT_REST_PATH);
+    }
+
+    public String[] getRESTPackages() {
+        return DEFAULT_PACKAGES;
+    }
+
+    public String getStaticPath() {
+        return DEFAULT_STATIC_PATH;
+    }
+
+    private String validatePort() {
+        if (restPort < 1024 || restPort > 65535) {
+            return "port must be greater than 1023 and less than 65536\n";
+        } else {
+            return "";
+        }
+    }
+
+    private String validateTimeToLive() {
+        if (timeToLive < -1) {
+            return "time to live must be greater than -1 (set to -1 to wait forever)\n";
+        } else {
+            return "";
+        }
+    }
+
+    public boolean isHelpSet() {
+        return helpSet;
+    }
+
+    public void setHelp(final boolean helpSet) {
+        this.helpSet = helpSet;
+    }
+
+    public int getRESTPort() {
+        return restPort;
+    }
+
+    public void setRESTPort(final int restPort) {
+        this.restPort = restPort;
+    }
+
+    public long getTimeToLive() {
+        return timeToLive;
+    }
+
+    public void setTimeToLive(final long timeToLive) {
+        this.timeToLive = timeToLive;
+    }
+
+    @Override
+    public String toString() {
+        final StringBuilder ret = new StringBuilder();
+        ret.append(this.getClass().getSimpleName()).append(": URI=").append(this.getBaseURI()).append(", TTL=")
+                .append(this.getTimeToLive()).append("sec");
+        return ret.toString();
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ParameterCheck.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ParameterCheck.java
new file mode 100644
index 000000000..3384a17f8
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/ParameterCheck.java
@@ -0,0 +1,211 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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.apex.client.full.rest;
+
+import java.util.Map;
+
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class ParameterCheck is used to check parameters passed to the servlet.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public final class ParameterCheck {
+    private static final int MAX_PORT = 65535;
+
+    /**
+     * private constructor to prevent subclassing of this utility class.
+     */
+    private ParameterCheck() {}
+
+    /**
+     * The Enum StartStop is used to hold .
+     *
+     * @author Liam Fallon (liam.fallon@ericsson.com)
+     */
+    public enum StartStop {
+        /** Start of an Apex engine has been ordered. */
+        START,
+        /** Stop of an Apex engine has been ordered. */
+        STOP
+    };
+
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(ParameterCheck.class);
+
+    private static final String HOSTNAME_PAR = "hostname";
+    private static final String PORT_PAR = "port";
+    private static final String AXARTIFACTKEY_PAR = "AxArtifactKey";
+
+    /**
+     * Gets the host name.
+     *
+     * @param parameterMap the parameter map
+     * @return the host name
+     */
+    public static String getHostName(final Map<String, String[]> parameterMap) {
+        if (!parameterMap.containsKey(HOSTNAME_PAR)) {
+            LOGGER.warn("parameter \"" + HOSTNAME_PAR + "\" not found");
+            return null;
+        }
+
+        final String[] hostNameValue = parameterMap.get(HOSTNAME_PAR);
+
+        if (hostNameValue.length == 0 || hostNameValue[0].trim().length() == 0) {
+            LOGGER.warn("value of parameter \"" + HOSTNAME_PAR + "\" not found");
+            return null;
+        }
+
+        return hostNameValue[0];
+    }
+
+    /**
+     * Gets the port.
+     *
+     * @param parameterMap the parameter map
+     * @return the port
+     */
+    public static int getPort(final Map<String, String[]> parameterMap) {
+        if (!parameterMap.containsKey(PORT_PAR)) {
+            LOGGER.warn("parameter \"" + PORT_PAR + "\" not found");
+            return -1;
+        }
+
+        final String[] portValue = parameterMap.get(PORT_PAR);
+
+        if (portValue.length == 0 || portValue[0].trim().length() == 0) {
+            LOGGER.warn("value of parameter \"" + PORT_PAR + "\" not found");
+            return -1;
+        }
+
+        int port = -1;
+        try {
+            port = Integer.parseInt(portValue[0]);
+        } catch (final Exception e) {
+            LOGGER.warn("value \"" + portValue[0] + "\"of parameter \"" + PORT_PAR + "\" not a valid integer", e);
+            return -1;
+        }
+
+        if (port <= 0 || port > MAX_PORT) {
+            LOGGER.warn("value \"" + portValue[0] + "\"of parameter \"" + PORT_PAR
+                    + "\" not a valid port between 0 and 65535");
+            return -1;
+        }
+
+        return port;
+    }
+
+    /**
+     * Gets the engine key.
+     *
+     * @param parameterMap the parameter map
+     * @return the engine key
+     */
+    public static AxArtifactKey getEngineKey(final Map<String, String[]> parameterMap) {
+        String artifactKeyParameter = null;
+        for (final String parameter : parameterMap.keySet()) {
+            // Check for an AxArtifactKey parameter
+            if (parameter.startsWith(AXARTIFACTKEY_PAR)) {
+                artifactKeyParameter = parameter;
+                break;
+            }
+        }
+        if (artifactKeyParameter == null) {
+            LOGGER.warn("parameter \"" + AXARTIFACTKEY_PAR + "\" not found");
+            return null;
+        }
+
+        final String[] axArtifactKeyArray = artifactKeyParameter.split("#");
+
+        if (axArtifactKeyArray.length != 2) {
+            LOGGER.warn("value \"" + artifactKeyParameter + "\" of parameter \"" + AXARTIFACTKEY_PAR + "\" not valid");
+            return null;
+        }
+
+        return new AxArtifactKey(axArtifactKeyArray[1]);
+    }
+
+    /**
+     * Gets the start stop.
+     *
+     * @param parameterMap the parameter map
+     * @param engineKey the engine key
+     * @return the start stop
+     */
+    public static ParameterCheck.StartStop getStartStop(final Map<String, String[]> parameterMap,
+            final AxArtifactKey engineKey) {
+        final String startStopPar = AXARTIFACTKEY_PAR + '#' + engineKey.getID();
+        if (!parameterMap.containsKey(startStopPar)) {
+            LOGGER.warn("parameter \"" + startStopPar + "\" not found");
+            return null;
+        }
+
+        final String[] startStopValue = parameterMap.get(startStopPar);
+
+        if (startStopValue.length == 0 || startStopValue[0].trim().length() == 0) {
+            LOGGER.warn("value of parameter \"" + startStopPar + "\" not found");
+            return null;
+        }
+
+        ParameterCheck.StartStop startStop;
+        if (startStopValue[0].equalsIgnoreCase("start")) {
+            startStop = ParameterCheck.StartStop.START;
+        } else if (startStopValue[0].equalsIgnoreCase("stop")) {
+            startStop = ParameterCheck.StartStop.STOP;
+        } else {
+            LOGGER.warn("value \"" + startStopValue[0] + "\"of parameter \"" + startStopPar
+                    + "\" not \"start\" or \"stop\"");
+            return null;
+        }
+
+        return startStop;
+    }
+
+    /**
+     * Find and return a long value with the given name.
+     *
+     * @param parameterMap The parameter map containing the value
+     * @param longName The name of the long parameter
+     * @return The long value
+     */
+    public static long getLong(final Map<String, String[]> parameterMap, final String longName) {
+        if (!parameterMap.containsKey(longName)) {
+            LOGGER.warn("parameter \"" + longName + "\" not found");
+            return -1;
+        }
+
+        final String[] longValue = parameterMap.get(longName);
+
+        if (longValue.length == 0 || longValue[0].trim().length() == 0) {
+            LOGGER.warn("value of parameter \"" + longName + "\" not found");
+            return -1;
+        }
+
+        try {
+            return Long.parseLong(longValue[0]);
+        } catch (final Exception e) {
+            LOGGER.warn("value \"" + longValue[0] + "\"of parameter \"" + longName + "\" not a valid long", e);
+            return -1;
+        }
+    }
+}
diff --git a/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/package-info.java b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/package-info.java
new file mode 100644
index 000000000..de6130363
--- /dev/null
+++ b/client/client-full/src/main/java/org/onap/policy/apex/client/full/rest/package-info.java
@@ -0,0 +1,27 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2016-2018 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=========================================================
+ */
+
+/**
+ * Implements the RESTful client with full functionality.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+
+package org.onap.policy.apex.client.full.rest;