/**
* Parse the parameters of a connection into a CoreNLP properties file that can be passed into
* {@link StanfordCoreNLP}, and used in the I/O stages.
*
* @param httpExchange The http exchange; effectively, the request information.
* @return A {@link Properties} object corresponding to a combination of default and passed
* properties.
* @throws UnsupportedEncodingException Thrown if we could not decode the key/value pairs with
* UTF-8.
*/
private Properties getProperties(HttpExchange httpExchange)
throws UnsupportedEncodingException {
// Load the default properties
Properties props = new Properties();
defaultProps
.entrySet()
.stream()
.forEach(
entry -> props.setProperty(entry.getKey().toString(), entry.getValue().toString()));
// Try to get more properties from query string.
Map<String, String> urlParams = getURLParams(httpExchange.getRequestURI());
if (urlParams.containsKey("properties")) {
StringUtils.decodeMap(URLDecoder.decode(urlParams.get("properties"), "UTF-8"))
.entrySet()
.forEach(entry -> props.setProperty(entry.getKey(), entry.getValue()));
} else if (urlParams.containsKey("props")) {
StringUtils.decodeMap(URLDecoder.decode(urlParams.get("properties"), "UTF-8"))
.entrySet()
.forEach(entry -> props.setProperty(entry.getKey(), entry.getValue()));
}
// Make sure the properties compile
props.setProperty(
"annotators",
StanfordCoreNLP.ensurePrerequisiteAnnotators(
props.getProperty("annotators").split("[, \t]+")));
return props;
}
private static Properties getProperties(
String name, String mapping, boolean ignoreCase, String validPosRegex) {
String prefix = (name != null && !name.isEmpty()) ? name + '.' : "";
Properties props = new Properties();
props.setProperty(prefix + "mapping", mapping);
props.setProperty(prefix + "ignorecase", String.valueOf(ignoreCase));
if (validPosRegex != null) {
props.setProperty(prefix + "validpospattern", validPosRegex);
}
return props;
}
public StanfordCoreNLPServer(int port) throws IOException {
serverPort = port;
defaultProps = new Properties();
defaultProps.setProperty(
"annotators", "tokenize, ssplit, pos, lemma, ner, parse, depparse, natlog, openie, dcoref");
defaultProps.setProperty("inputFormat", "text");
defaultProps.setProperty("outputFormat", "json");
// Generate and write a shutdown key
String tmpDir = System.getProperty("java.io.tmpdir");
File tmpFile = new File(tmpDir + File.separator + "corenlp.shutdown");
tmpFile.deleteOnExit();
if (tmpFile.exists()) {
if (!tmpFile.delete()) {
throw new IllegalStateException("Could not delete shutdown key file");
}
}
this.shutdownKey = new BigInteger(130, new Random()).toString(32);
IOUtils.writeStringToFile(shutdownKey, tmpFile.getPath(), "utf-8");
// Set the static page handler
this.staticPageHandle = new FileHandler("edu/stanford/nlp/pipeline/demo/corenlp-brat.html");
}