--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/de/intevation/artifacts/httpclient/ConsoleClient.java	Thu Feb 17 10:31:40 2011 +0000
@@ -0,0 +1,354 @@
+/*
+ * Copyright (c) 2010 by Intevation GmbH
+ *
+ * This program is free software under the LGPL (>=v2.1)
+ * Read the file LGPL.txt coming with the software for details
+ * or visit http://www.gnu.org/licenses/ if it does not exist.
+ */
+
+package de.intevation.artifacts.httpclient;
+
+import java.io.IOException;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.OutputStream;
+
+import java.net.MalformedURLException;
+
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.xpath.XPathConstants;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+
+import org.apache.log4j.Logger;
+import org.apache.log4j.PropertyConfigurator;
+
+import de.intevation.artifacts.httpclient.http.GNVClient;
+import de.intevation.artifacts.httpclient.http.GNVClientImpl;
+import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
+
+import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
+import de.intevation.artifacts.httpclient.exceptions.NoSuchOptionException;
+import de.intevation.artifacts.httpclient.objects.Artifact;
+import de.intevation.artifacts.httpclient.utils.ArtifactProtocolUtils;
+import de.intevation.artifacts.httpclient.utils.Configuration;
+import de.intevation.artifacts.httpclient.utils.XFormNamespaceContext;
+import de.intevation.artifacts.httpclient.utils.XMLUtils;
+
+/**
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class ConsoleClient
+{
+    /**
+     * The logging is done via Log4j. To configure the logging
+     * a file 'log4j.properties' is search in the configuration directory.
+     */
+    public static final String LOG4J_PROPERTIES = "log4j.properties";
+
+
+    /**
+     * The path of the configuration directory.
+     */
+    public static final String CONFIG_PATH = System.getProperty("config.dir",
+                                                                "conf");
+
+    public static final String CONFIG = System.getProperty("config.file",
+                                                           "use_case1.conf");
+
+
+    public static final String XPATH_DYNAMIC = "/art:result/art:ui/art:dynamic";
+
+    /**
+     * The logger used in this class.
+     */
+    private static Logger logger;
+
+
+    static {
+        configureLogging();
+
+        logger = Logger.getLogger(ConsoleClient.class);
+    }
+
+
+    /**
+     * Trys to load the Log4j configuration from ${config.dir}/log4j.properties.
+     */
+    public static final void configureLogging() {
+        File configDir = new File(CONFIG_PATH);
+        File propFile  = new File(configDir, LOG4J_PROPERTIES);
+
+        if (propFile.isFile() && propFile.canRead()) {
+            try {
+                PropertyConfigurator.configure(propFile.toURI().toURL());
+            }
+            catch (MalformedURLException mue) {
+                mue.printStackTrace(System.err);
+            }
+        }
+    }
+
+
+    public static final Configuration readConfiguration() {
+        File configDir  = new File(CONFIG_PATH);
+        File configFile = new File(configDir, CONFIG);
+
+        logger.debug("Configuration file: " + configFile.getAbsolutePath());
+
+        if (configFile.isFile() && configFile.canRead()) {
+            try {
+                Configuration conf = new Configuration(configFile);
+                conf.initialize();
+
+                return conf;
+            }
+            catch (IOException ioe) {
+                logger.error("Error while reading configuration.");
+            }
+        }
+
+        return null;
+    }
+
+
+    public static void main( String[] args )
+    {
+        logger.info("Starting GNV console client.");
+
+        Configuration conf = readConfiguration();
+
+        String serverHost  = (String) conf.getServerSettings("host");
+        String serverPort  = (String) conf.getServerSettings("port");
+        GNVClient client   = new GNVClientImpl(serverHost + ":" + serverPort);
+
+        try {
+            Document create = ArtifactProtocolUtils.createCreateDocument(
+                (String) conf.getArtifactSettings("fis"));
+            Artifact artifact = client.create(create);
+
+            Map attr       = new HashMap();
+            String   product  = (String) conf.getArtifactSettings("product");
+            String[] products = extractOptions(client, artifact, product);
+            attr.put("product", products[0]);
+
+            feedAndGo(client, artifact, attr, "timeSeries");
+
+            attr.clear();
+            String   area  = (String) conf.getArtifactSettings("areaid");
+            String[] areas = extractOptions(client, artifact, area);
+            attr.put("areaid", areas[0]);
+            feedAndGo(client, artifact, attr, "timeseries_without_geom");
+
+            attr.clear();
+            String   feature  = (String) conf.getArtifactSettings("featureid");
+            String[] features = extractOptions(client, artifact, feature);
+            attr.put("featureid", features[0]);
+            feedAndGo(client, artifact, attr, "timeseries_vector_scalar");
+
+            attr.clear();
+            String   vector  = (String) conf.getArtifactSettings("vectorscalar");
+            String[] vectors = extractOptions(client, artifact, vector);
+            attr.put("vectorscalar", vectors[0]);
+            feedAndGo(client, artifact, attr, "timeseries_parameter");
+
+            attr.clear();
+            String   parameter  = (String) conf.getArtifactSettings("parameterid");
+            String[] parameters = extractOptions(client, artifact, parameter);
+            attr.put("parameterid", parameters);
+            feedAndGo(client, artifact, attr, "timeseries_depth_height");
+
+            attr.clear();
+            String   measure  = (String) conf.getArtifactSettings("measurementid");
+            String[] measures = extractMeasurements(client, artifact, measure);
+            attr.put("measurementid", measures);
+            feedAndGo(client, artifact, attr, "timeseries_interval");
+
+            attr.clear();
+            String min = (String) conf.getArtifactSettings("minvalue");
+            String max = (String) conf.getArtifactSettings("maxvalue");
+            attr.put("minvalue", min);
+            attr.put("maxvalue", max);
+            feedAndGo(client, artifact, attr, "timeseries_calculate_results");
+
+            try {
+                Map opts = new HashMap();
+                opts.put("mime-type", conf.getOutputSettings("mime-type"));
+                opts.put("width", conf.getOutputSettings("width"));
+                opts.put("height", conf.getOutputSettings("height"));
+                opts.put("points", conf.getOutputSettings("points"));
+
+                Document chart =
+                    ArtifactProtocolUtils.createChartDocument(artifact, opts);
+
+                String dir = (String) conf.getOutputSettings("directory");
+
+                File outDir     = new File(dir);
+                File output     = new File(outDir, "output.png");
+                OutputStream os = new FileOutputStream(output);
+
+                client.out(artifact, chart, "chart", os);
+            }
+            catch (IOException ioe) {
+                logger.error(
+                    "IO error while writing the output: " + ioe.getMessage());
+            }
+
+            logger.debug("Finished GNV console client.");
+        }
+        catch (ConnectionException ce) {
+            logger.error(ce.getMessage());
+        }
+        catch (NoSuchOptionException nsoe) {
+            logger.error(
+                "No such option found: " + nsoe.getMessage());
+        }
+    }
+
+
+    public static void feedAndGo(
+        GNVClient client,
+        Artifact  artifact,
+        Map       attr,
+        String target)
+    throws ConnectionException
+    {
+        Document feed = ArtifactProtocolUtils.createFeedDocument(artifact, attr);
+        client.feed(artifact, feed, new DocumentResponseHandler());
+
+        Document advance = ArtifactProtocolUtils.createAdvanceDocument(
+            artifact,
+            target);
+
+        client.advance(artifact, advance, new DocumentResponseHandler());
+    }
+
+
+    /**
+     * XXX I think, this method should be implemented somewhere else to be able
+     * to re-use this implementation. But this method needs more work to be more
+     * abstract, so it needs to be reimplemented later, I think.
+     */
+    public static String[] extractOptions(
+        GNVClient client,
+        Artifact  artifact,
+        String    text)
+    throws NoSuchOptionException, ConnectionException
+    {
+        Document describe = ArtifactProtocolUtils.createDescribeDocument(
+            artifact, true);
+
+        Document description = (Document) client.describe(
+            artifact, describe, new DocumentResponseHandler());
+
+        List pieces  = Arrays.asList(text.split(","));
+        List options = new ArrayList(pieces.size()); 
+
+        Node dynamic   = XMLUtils.getNodeXPath(description, XPATH_DYNAMIC);
+
+        // TODO We should handle these cases better!!
+        NodeList items = (NodeList) XMLUtils.getXPath(
+            dynamic, "xform:select1/xform:choices/xform:item",
+            XPathConstants.NODESET, XFormNamespaceContext.INSTANCE);
+
+        if (items == null || items.getLength() == 0) {
+            items = (NodeList) XMLUtils.getXPath(
+                dynamic, "xform:select/xform:choices/xform:item",
+                XPathConstants.NODESET, XFormNamespaceContext.INSTANCE);
+        }
+
+        if (items == null || items.getLength() == 0) {
+            items = (NodeList) XMLUtils.getXPath(
+                dynamic, "xform:group/xform:select/xform:item",
+                XPathConstants.NODESET, XFormNamespaceContext.INSTANCE);
+        }
+
+
+        for (int i = 0; i < items.getLength(); i++) {
+            Node item  = items.item(i);
+            Node label = (Node) XMLUtils.getXPath(
+                item, "xform:label", XPathConstants.NODE,
+                XFormNamespaceContext.INSTANCE);
+
+            Node value = (Node) XMLUtils.getXPath(
+                item, "xform:value", XPathConstants.NODE,
+                XFormNamespaceContext.INSTANCE);
+
+            if (pieces.indexOf(label.getTextContent()) >= 0)
+                options.add(value.getTextContent());
+        }
+
+        if (options.isEmpty())
+            throw new NoSuchOptionException(text);
+
+        return (String[]) options.toArray(new String[options.size()]);
+    }
+
+
+    /**
+     * XXX This method extracts the measurement ids depending on the user
+     * configuration from describe document. Currently, this is a special case
+     * that should be handled the same way as all the other options in the
+     * describe document.
+     */
+    public static String[] extractMeasurements(
+        GNVClient client,
+        Artifact  artifact,
+        String    text)
+    throws NoSuchOptionException, ConnectionException
+    {
+        Document describe = ArtifactProtocolUtils.createDescribeDocument(
+            artifact, true);
+
+        Document description = (Document) client.describe(
+            artifact, describe, new DocumentResponseHandler());
+
+        List pieces  = Arrays.asList(text.split(","));
+        List options = new ArrayList(pieces.size());
+
+        Node dynamic = XMLUtils.getNodeXPath(description, XPATH_DYNAMIC);
+
+        NodeList params = (NodeList) XMLUtils.getXPath(
+            dynamic, "xform:group/xform:select",
+            XPathConstants.NODESET, XFormNamespaceContext.INSTANCE);
+
+        for (int i = 0; i < params.getLength(); i++) {
+            Node param = params.item(i);
+
+            NodeList items = (NodeList) XMLUtils.getXPath(
+                param, "xform:item[@disabled='false']", XPathConstants.NODESET,
+                XFormNamespaceContext.INSTANCE);
+
+            for (int j = 0; j < items.getLength(); j++) {
+                Node item = items.item(j);
+
+                Node label = (Node) XMLUtils.getXPath(
+                    item, "xform:label", XPathConstants.NODE,
+                    XFormNamespaceContext.INSTANCE);
+
+                if (pieces.indexOf(label.getTextContent()) < 0) {
+                    continue;
+                }
+
+                Node value = (Node) XMLUtils.getXPath(
+                    item, "xform:value", XPathConstants.NODE,
+                    XFormNamespaceContext.INSTANCE);
+
+                options.add(value.getTextContent());
+            }
+        }
+
+        if (options.isEmpty())
+            throw new NoSuchOptionException(text);
+
+        return (String[]) options.toArray(new String[options.size()]);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: