Examples with Unmarshaller javax.xml.bind.Unmarshaller used on opensource projects

Example 76 with Unmarshaller

use of javax.xml.bind.Unmarshaller in project opennms by OpenNMS.

the class JAXBTest method testMarshall.

/**
     * Test marshall.
     *
     * @throws Exception the exception
     */
@Test
public void testMarshall() throws Exception {
    final String expectedXML = "" + "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n" + "<test-alarm>\n" + "    <id>23</id>\n" + "</test-alarm>\n" + "";
    TestNorthBoundAlarm nba = new TestNorthBoundAlarm();
    nba.setId("23");
    // Create a Marshaller
    JAXBContext context = JAXBContext.newInstance(TestNorthBoundAlarm.class);
    Marshaller marshaller = context.createMarshaller();
    marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
    // save the output in a byte array
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    // marshall the output
    marshaller.marshal(nba, out);
    // verify its matches the expected results
    byte[] utf8 = out.toByteArray();
    String result = new String(utf8, StandardCharsets.UTF_8);
    assertXmlEquals(expectedXML, result);
    System.err.println(result);
    // unmarshall the generated XML
    //		URL xsd = getClass().getResource("/ncs-model.xsd");
    //		
    //		assertNotNull(xsd);
    //		
    //		SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
    //		Schema schema = schemaFactory.newSchema(xsd);
    Unmarshaller unmarshaller = context.createUnmarshaller();
    //		unmarshaller.setSchema(schema);
    Source source = new StreamSource(new ByteArrayInputStream(utf8));
    TestNorthBoundAlarm read = unmarshaller.unmarshal(source, TestNorthBoundAlarm.class).getValue();
    assertNotNull(read);
    // round trip back to XML and make sure we get the same thing
    ByteArrayOutputStream reout = new ByteArrayOutputStream();
    marshaller.marshal(read, reout);
    String roundTrip = new String(reout.toByteArray(), StandardCharsets.UTF_8);
    assertXmlEquals(expectedXML, roundTrip);
}

Example 77 with Unmarshaller

use of javax.xml.bind.Unmarshaller in project opennms by OpenNMS.

the class RrdtoolXportFetchStrategy method fetchMeasurements.

/**
     * {@inheritDoc}
     */
@Override
protected FetchResults fetchMeasurements(long start, long end, long step, int maxrows, Map<Source, String> rrdsBySource, Map<String, Object> constants) throws RrdException {
    String rrdBinary = System.getProperty("rrd.binary");
    if (rrdBinary == null) {
        throw new RrdException("No RRD binary is set.");
    }
    final long startInSeconds = (long) Math.floor(start / 1000);
    final long endInSeconds = (long) Math.floor(end / 1000);
    long stepInSeconds = (long) Math.floor(step / 1000);
    // The step must be strictly positive
    if (stepInSeconds <= 0) {
        stepInSeconds = 1;
    }
    final CommandLine cmdLine = new CommandLine(rrdBinary);
    cmdLine.addArgument("xport");
    cmdLine.addArgument("--step");
    cmdLine.addArgument("" + stepInSeconds);
    cmdLine.addArgument("--start");
    cmdLine.addArgument("" + startInSeconds);
    cmdLine.addArgument("--end");
    cmdLine.addArgument("" + endInSeconds);
    if (maxrows > 0) {
        cmdLine.addArgument("--maxrows");
        cmdLine.addArgument("" + maxrows);
    }
    // Use labels without spaces when executing the xport command
    // These are mapped back to the requested labels in the response
    final Map<String, String> labelMap = Maps.newHashMap();
    int k = 0;
    for (final Map.Entry<Source, String> entry : rrdsBySource.entrySet()) {
        final Source source = entry.getKey();
        final String rrdFile = entry.getValue();
        final String tempLabel = Integer.toString(++k);
        labelMap.put(tempLabel, source.getLabel());
        cmdLine.addArgument(String.format("DEF:%s=%s:%s:%s", tempLabel, Utils.escapeColons(rrdFile), Utils.escapeColons(source.getEffectiveDataSource()), source.getAggregation()));
        cmdLine.addArgument(String.format("XPORT:%s:%s", tempLabel, tempLabel));
    }
    // Use commons-exec to execute rrdtool
    final DefaultExecutor executor = new DefaultExecutor();
    // Capture stdout/stderr
    final ByteArrayOutputStream stdout = new ByteArrayOutputStream();
    final ByteArrayOutputStream stderr = new ByteArrayOutputStream();
    executor.setStreamHandler(new PumpStreamHandler(stdout, stderr, null));
    // Fail if we get a non-zero exit code
    executor.setExitValue(0);
    // Fail if the process takes too long
    final ExecuteWatchdog watchdog = new ExecuteWatchdog(XPORT_TIMEOUT_MS);
    executor.setWatchdog(watchdog);
    // Export
    RrdXport rrdXport;
    try {
        LOG.debug("Executing: {}", cmdLine);
        executor.execute(cmdLine);
        final XMLReader xmlReader = XMLReaderFactory.createXMLReader();
        xmlReader.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
        final SAXSource source = new SAXSource(xmlReader, new InputSource(new StringReader(stdout.toString())));
        final JAXBContext jc = JAXBContext.newInstance(RrdXport.class);
        final Unmarshaller u = jc.createUnmarshaller();
        rrdXport = (RrdXport) u.unmarshal(source);
    } catch (IOException e) {
        throw new RrdException("An error occured while executing '" + StringUtils.join(cmdLine.toStrings(), " ") + "' with stderr: " + stderr.toString(), e);
    } catch (SAXException | JAXBException e) {
        throw new RrdException("The output generated by 'rrdtool xport' could not be parsed.", e);
    }
    final int numRows = rrdXport.getRows().size();
    final int numColumns = rrdXport.getMeta().getLegends().size();
    final long xportStartInMs = rrdXport.getMeta().getStart() * 1000;
    final long xportStepInMs = rrdXport.getMeta().getStep() * 1000;
    final long[] timestamps = new long[numRows];
    final double[][] values = new double[numColumns][numRows];
    // Convert rows to columns
    int i = 0;
    for (final XRow row : rrdXport.getRows()) {
        // Derive the timestamp from the start and step since newer versions
        // of rrdtool no longer include it as part of the rows
        timestamps[i] = xportStartInMs + xportStepInMs * i;
        for (int j = 0; j < numColumns; j++) {
            if (row.getValues() == null) {
                // NMS-7710: Avoid NPEs, in certain cases the list of values may be null
                throw new RrdException("The output generated by 'rrdtool xport' was not recognized. Try upgrading your rrdtool binaries.");
            }
            values[j][i] = row.getValues().get(j);
        }
        i++;
    }
    // Map the columns by label
    // The legend entries are in the same order as the column values
    final Map<String, double[]> columns = Maps.newHashMapWithExpectedSize(numColumns);
    i = 0;
    for (String label : rrdXport.getMeta().getLegends()) {
        columns.put(labelMap.get(label), values[i++]);
    }
    return new FetchResults(timestamps, columns, xportStepInMs, constants);
}

Example 78 with Unmarshaller

use of javax.xml.bind.Unmarshaller in project opennms by OpenNMS.

the class HypericAckProcessor method parseHypericAlerts.

/**
     * <p>parseHypericAlerts</p>
     *
     * @param reader a {@link java.io.Reader} object.
     * @return a {@link java.util.List} object.
     * @throws javax.xml.bind.JAXBException if any.
     * @throws javax.xml.stream.XMLStreamException if any.
     */
public static List<HypericAlertStatus> parseHypericAlerts(Reader reader) throws JAXBException, XMLStreamException {
    List<HypericAlertStatus> retval = new ArrayList<HypericAlertStatus>();
    // Instantiate a JAXB context to parse the alert status
    JAXBContext context = JAXBContext.newInstance(new Class[] { HypericAlertStatuses.class, HypericAlertStatus.class });
    XMLInputFactory xmlif = XMLInputFactory.newInstance();
    XMLEventReader xmler = xmlif.createXMLEventReader(reader);
    EventFilter filter = new EventFilter() {

        @Override
        public boolean accept(XMLEvent event) {
            return event.isStartElement();
        }
    };
    XMLEventReader xmlfer = xmlif.createFilteredReader(xmler, filter);
    // Read up until the beginning of the root element
    StartElement startElement = (StartElement) xmlfer.nextEvent();
    // Fetch the root element name for {@link HypericAlertStatus} objects
    String rootElementName = context.createJAXBIntrospector().getElementName(new HypericAlertStatuses()).getLocalPart();
    if (rootElementName.equals(startElement.getName().getLocalPart())) {
        Unmarshaller unmarshaller = context.createUnmarshaller();
        // Use StAX to pull parse the incoming alert statuses
        while (xmlfer.peek() != null) {
            Object object = unmarshaller.unmarshal(xmler);
            if (object instanceof HypericAlertStatus) {
                HypericAlertStatus alertStatus = (HypericAlertStatus) object;
                retval.add(alertStatus);
            }
        }
    } else {
        // Try to pull in the HTTP response to give the user a better idea of what went wrong
        StringBuffer errorContent = new StringBuffer();
        LineNumberReader lineReader = new LineNumberReader(reader);
        try {
            String line;
            while (true) {
                line = lineReader.readLine();
                if (line == null) {
                    break;
                } else {
                    errorContent.append(line.trim());
                }
            }
        } catch (IOException e) {
            errorContent.append("Exception while trying to print out message content: " + e.getMessage());
        }
        // Throw an exception and include the erroneous HTTP response in the exception text
        throw new JAXBException("Found wrong root element in Hyperic XML document, expected: \"" + rootElementName + "\", found \"" + startElement.getName().getLocalPart() + "\"\n" + errorContent.toString());
    }
    return retval;
}

Example 79 with Unmarshaller

use of javax.xml.bind.Unmarshaller in project opennms by OpenNMS.

the class DnsRequisitionUrlConnectionIT method dwoUrlAsResourceUsingNonMatchingExpression.

@Test
@JUnitDNSServer(port = 9153, zones = { @DNSZone(name = "example.com", entries = { @DNSEntry(hostname = "www", address = "72.14.204.99"), @DNSEntry(hostname = "monkey", address = "72.14.204.99") }) })
public void dwoUrlAsResourceUsingNonMatchingExpression() throws IOException, JAXBException {
    String urlString = "dns://localhost:9153/example.com/?expression=Local.*";
    Resource resource = new UrlResource(urlString);
    Assert.assertEquals(urlString, resource.getURL().toString());
    Requisition req = null;
    Assert.assertNotNull(resource);
    InputStream resourceStream = resource.getInputStream();
    JAXBContext context = JAXBContext.newInstance(Requisition.class);
    Unmarshaller um = context.createUnmarshaller();
    um.setSchema(null);
    req = (Requisition) um.unmarshal(resourceStream);
    Assert.assertEquals(0, req.getNodeCount());
    resourceStream.close();
}

Example 80 with Unmarshaller

use of javax.xml.bind.Unmarshaller in project opennms by OpenNMS.

the class DnsRequisitionUrlConnectionIT method dwoUrlAsResource.

@Test
@JUnitDNSServer(port = 9153, zones = { @DNSZone(name = "example.com", entries = { @DNSEntry(hostname = "www", address = "72.14.204.99") }) })
public void dwoUrlAsResource() throws IOException, JAXBException {
    Resource resource = new UrlResource(TEST_URL);
    Assert.assertEquals(TEST_URL, resource.getURL().toString());
    Requisition req = null;
    Assert.assertNotNull(resource);
    InputStream resourceStream = resource.getInputStream();
    JAXBContext context = JAXBContext.newInstance(Requisition.class);
    Unmarshaller um = context.createUnmarshaller();
    um.setSchema(null);
    req = (Requisition) um.unmarshal(resourceStream);
    Assert.assertEquals("should have 2 A records: 1 for example.com, and 1 for www.example.com", 2, req.getNodeCount());
    resourceStream.close();
}