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Client for the Smartlogic Semaphore Classification Server
package com.smartlogic.classificationserver.client;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringWriter;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.commons.io.IOUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequest;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.FormBodyPart;
import org.apache.http.entity.mime.FormBodyPartBuilder;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.ByteArrayBody;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
/**
* General purpose client for the classification server
*
* @author Smartlogic Semaphore
*
*/
public class ClassificationClient implements AutoCloseable {
public static Logger logger = LoggerFactory.getLogger(ClassificationClient.class);
/* Methods that are classification requests */
/**
* Determine the version information as generated by Classification Server
*
* @return The version string
* @throws ClassificationException - There has been a connectivity issue
*/
public String getVersion() throws ClassificationException {
logger.debug("getVersion - entry");
String commandString = getCommandXML("version", null);
CSVersion version = new CSVersion(sendPostRequest(commandString, null));
return version.getVersion();
}
/**
* Return the rulebase classes that are currently configured on the
* classification server instance
*
* @return List of rulebases classes
* @throws ClassificationException - There has been a connectivity issue
*/
public Collection getRulebaseClasses() throws ClassificationException {
String commandString = getCommandXML("listrulenetclasses", null);
RulebaseClassSet rulebaseClassSet = new RulebaseClassSet(sendPostRequest(commandString, null));
return rulebaseClassSet.getRulebaseClasses();
}
/**
* Clear out a publish set so that new pack files can be uploaded. Until the
* publish set is committed, this will have no effect on what is currently live
*
* @param publishSetName - the name of the set to be created
* @throws ClassificationException - There has been a connectivity issue
*/
public void clearPublishSet(String publishSetName) throws ClassificationException {
String commandString = getCommandXML("publish_set_init", publishSetName);
sendPostRequest(commandString, null);
}
/**
* Upload the collection of pakfiles to the named publish set Until the publish
* set is committed, this will have no effect on what is currently live
*
* @param publishSetName - the name of the publish set to which the pak files
* should be added
* @param pakFiles - the pak files to upload
* @throws ClassificationException - There has been a connectivity issue
*/
public void sendPakfiles(String publishSetName, Collection pakFiles) throws ClassificationException {
for (File pakFile : pakFiles) {
sendPakFile(publishSetName, pakFile);
}
}
/**
* Upload the pakfile to the named publish set Until the publish set is
* committed, this will have no effect on what is currently live
*
* @param publishSetName - the name of the publish set to which the pak file
* should be added
* @param pakFile - the pak file to upload
* @throws ClassificationException - There has been a connectivity issue
*/
public void sendPakFile(String publishSetName, File pakFile) throws ClassificationException {
String commandString = getCommandXML("publish_set_add", publishSetName);
sendPostRequest(commandString, pakFile);
}
/**
* Instruct that a particular publish set should become live This command will
* affect the classification result
*
* @param publishSetName - the name of the publish set to commit
* @throws ClassificationException - There has been a connectivity issue
*/
public void commitPublishSet(String publishSetName) throws ClassificationException {
String commandString = getCommandXML("publish_set", publishSetName);
sendPostRequest(commandString, null);
}
/**
* Remove a particular publish set from the classification servers rulebase set.
*
* @param publishSetName - the name of the publish set to deactivate
* @throws ClassificationException - There has been a connectivity issue
*/
public void deactivatePublishSet(String publishSetName) throws ClassificationException {
String commandString = getCommandXML("publish_set_deactivate", publishSetName);
sendPostRequest(commandString, null);
}
/**
* Return the information that CS makes available.
*
* @return Classification Server information
* @throws ClassificationException - There has been a connectivity issue
*/
public CSInfo getInfo() throws ClassificationException {
logger.debug("getInfo");
CSInfo csInfo = new CSInfo(sendPostRequest(getCommandXML("info", null), null));
return csInfo;
}
/**
* Return the list of languages available on the cs instance
*
* @return List of languages
* @throws ClassificationException Classification exception
*/
public Collection getLanguages() throws ClassificationException {
logger.debug("getLanguages - entry");
LanguageSet langSet = new LanguageSet(sendPostRequest(getCommandXML("listlanguages", null), null));
return langSet.getLanguages();
}
/**
* Return the map of default parameter values
*
* @return Map of default parameter values
* @throws ClassificationException Classification exception
*/
public Map getDefaults() throws ClassificationException {
logger.debug("getDefaults - entry");
Defaults defaults = new Defaults(sendPostRequest(getCommandXML("getparameterdefaults", null), null));
return defaults.getDefaults();
}
/**
* Return the status of the classification server instance
*
* @return A classification status object
* @throws ClassificationException Classification exception
*/
@Deprecated // This response appears pretty useless
public ClassificationServerStatus status() throws ClassificationException {
if (logger.isDebugEnabled())
logger.debug("status - entry");
ClassificationServerStatus status = new ClassificationServerStatus(
sendPostRequest(getCommandXML("stats", null), null));
return status;
}
/* Plain getters and setters for this object */
private ClassificationConfiguration classificationConfiguration;
/**
* Get the configuration of the classification server
*
* @return The configuration
*/
public ClassificationConfiguration getClassificationConfiguration() {
return classificationConfiguration;
}
/**
* Set the configuration of the classification server
*
* @param classificationConfiguration The configuration to use
*/
public void setClassificationConfiguration(ClassificationConfiguration classificationConfiguration) {
this.classificationConfiguration = classificationConfiguration;
}
private UUID auditUUID = null;
/**
* Return the UUID object used to tag the request
*
* @return The UUID object
*/
public UUID getAuditUUID() {
return auditUUID;
}
/**
* Set a UUID object that will be used to tag the request. If configured, this
* will be stored in the classification server log and so can be used for
* auditing purposes.
*
* @param auditGUID The audit GUID to use
*/
public void setAuditUUID(UUID auditGUID) {
this.auditUUID = auditGUID;
}
private String proxyHost = null;
/**
* The name of the proxy host in use.
*
* @return The proxy host. Null if no proxy is in use (the default)
*/
@Deprecated
public String getProxyHost() {
return proxyHost;
}
/**
* Set the proxy host to be used for all requests
*
* @param proxyHost The proxy host to use
*/
@Deprecated
public void setProxyHost(String proxyHost) {
this.proxyHost = proxyHost;
}
private int proxyPort;
/**
* The port of the proxy being used
*
* @return The port number
*/
@Deprecated
public int getProxyPort() {
return proxyPort;
}
/**
* The port of the proxy being used
*
* @param proxyPort The port number to use
*/
@Deprecated
public void setProxyPort(int proxyPort) {
this.proxyPort = proxyPort;
}
private String proxyURL;
private String getProxyURL() {
if (proxyURL == null) {
if ((proxyHost != null) && (proxyPort != 0)) {
proxyURL = "http://" + proxyHost + ":" + proxyPort;
}
}
return proxyURL;
}
public void setProxyURL(String proxyURL) {
this.proxyURL = proxyURL;
}
/* Classification requests */
/**
* Classify the supplied file
*
* @param inputFile The input file to classify
* @param fileType File type of "inputFile". If the file type is not supplied
* (i.e. is null) then it will be guessed by classification
* server.
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(File inputFile, String fileType) throws ClassificationException {
return new Result(getStructuredDocument(inputFile, fileType));
}
public Document getStructuredDocument(File inputFile, String fileType) throws ClassificationException {
return getStructuredDocument(inputFile, fileType, null, null);
}
/**
* Classify the supplied title and body as if they were a document
*
* @param fileName The file name of the document to classify
* @param title The document title
* @param body The document body
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(FileName fileName, Body body, Title title) throws ClassificationException {
return new Result(getStructuredDocument(fileName, body, title));
}
public Document getStructuredDocument(FileName fileName, Body body, Title title) throws ClassificationException {
return getStructuredDocument(fileName, body, title, null);
}
/**
* Classify the supplied title and body as if they were a document
*
* @param title The document title
* @param body The document body
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(Body body, Title title) throws ClassificationException {
return new Result(getStructuredDocument(body, title));
}
public Document getStructuredDocument(Body body, Title title) throws ClassificationException {
return getStructuredDocument(null, body, title, null);
}
/**
* Classify the supplied title and body as if they were a document
*
* @param fileName The file name of the document to classify
* @param body The document body
* @param title The document title
* @param metadata Map containing metadata
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(FileName fileName, Body body, Title title,
Map> metadata) throws ClassificationException {
return new Result(getStructuredDocument(fileName, body, title, metadata));
}
public Document getStructuredDocument(FileName fileName, Body body, Title title,
Map> metadata) throws ClassificationException {
logger.debug("Treating document: '" + title.getValue() + "'");
// If there is no body, then don't bother attempting to classify the document
if ((body == null) || (body.getValue() == null) || (body.getValue().trim().length() == 0)) {
return getBlankStructuredDocument();
}
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
addByteArray(parts, body, fileName);
return XMLReader.getDocument(getClassifications(parts));
}
public byte[] getClassificationServerResponse(FileName filename, Body body, Title title,
Map> metadata) throws ClassificationException {
logger.debug("Treating document: '" + title.getValue() + "'");
// If there is no body, then don't bother attempting to classify the
// document
if ((body == null) || (body.getValue() == null) || (body.getValue().trim().length() == 0)) {
return new byte[0];
}
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
addByteArray(parts, body, filename);
return getClassificationServerResponse(parts);
}
/**
* Classify the supplied title and body as if they were a document
*
* @param body The document body
* @param title The document title
* @param metadata Map containing metadata
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(Body body, Title title, Map> metadata)
throws ClassificationException {
return new Result(getStructuredDocument(body, title, metadata));
}
public Document getStructuredDocument(Body body, Title title, Map> metadata)
throws ClassificationException {
return getStructuredDocument(null, body, title, metadata);
}
/**
* Classify the supplied url
*
* @param url The URL to classify
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(URL url) throws ClassificationException {
return new Result(getStructuredDocument(url));
}
public Document getStructuredDocument(URL url) throws ClassificationException {
return getStructuredDocument(url, null, null);
}
/**
* Classify the supplied url with the extra metadata
*
* @param url The URL to classify
* @param title The document title
* @param metadata Map containing metadata
* @return the classifications as returned by classification server.
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(URL url, Title title, Map> metadata)
throws ClassificationException {
return new Result(getStructuredDocument(url, title, metadata));
}
public Document getStructuredDocument(URL url, Title title, Map> metadata)
throws ClassificationException {
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
parts.add(getFormPart("path", url.toExternalForm()));
return XMLReader.getDocument(getClassifications(parts));
}
private final static SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ssZ");
/**
* Return the classification records for all requests between the two supplied
* dates
*
* @param startTime The earliest possible date for returned results
* @param endTime The latest possible date for returned results
* @return One record for each document classified in that date range
* @throws ClassificationException Classification exception
*/
public Collection getClassificationHistory(Date startTime, Date endTime)
throws ClassificationException {
logger.info("getClassificationHistory - entry");
ArrayList partsList = new ArrayList();
partsList.add(getFormPart("start_time", simpleDateFormat.format(startTime)));
partsList.add(getFormPart("finish_time", simpleDateFormat.format(endTime)));
partsList.add(getFormPart("operation", "getclassificationhistory"));
ClassificationHistory classificationHistory = new ClassificationHistory(
getClassificationServerResponse(partsList));
return classificationHistory.getClassificationRecords();
}
public byte[] getClassifiedBytes(Body body, Title title, Map> metadata)
throws ClassificationException {
logger.debug("Treating document: '" + title.getValue() + "'");
// If there is no body, then don't bother attempting to classify the document
if ((body == null) || (body.getValue() == null) || (body.getValue().trim().length() == 0)) {
return new byte[0];
}
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
addByteArray(parts, body, null);
return getClassifications(parts);
}
public byte[] getClassifiedBytes(URL url, Title title, Map> metadata)
throws ClassificationException {
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
parts.add(getFormPart("path", url.toExternalForm()));
return getClassifications(parts);
}
public byte[] getClassificationServerResponse(Body body, Title title) throws ClassificationException {
return getClassificationServerResponse(null, body, title, null);
}
/**
* Return directly the output from classification server with no analysis
*
* @param inputFile The input file to classify
* @param fileType File type of "inputFile". If the file type is not supplied
* (i.e. is null) then it will be guessed by classification
* server.
* @return The classification server response
* @throws ClassificationException Classification exception
*/
public byte[] getClassificationServerResponse(File inputFile, String fileType) throws ClassificationException {
return getClassificationServerResponse(inputFile, fileType, null, null);
}
/**
* Return in a structured form the output of the classification process
*
* @param data Data to classify
* @param fileName A string containing the name of the file to classify
* @return The structured result of the classification
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(byte[] data, String fileName) throws ClassificationException {
return new Result(getStructuredDocument(data, fileName));
}
public Document getStructuredDocument(byte[] data, String fileName) throws ClassificationException {
Collection parts = new ArrayList();
if ((data == null) || (data.length == 0))
return getBlankStructuredDocument();
addByteArray(parts, data, fileName);
return XMLReader.getDocument(getClassificationServerResponse(parts));
}
/**
* Return in a structured form the output of the classification process
*
* @param data Data to classify
* @param fileName A string containing the name of the file to classify
* @param title The document title
* @param metadata Map containing metadata
* @return The structured result of the classification
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(byte[] data, String fileName, Title title,
Map> metadata) throws ClassificationException {
return new Result(getStructuredDocument(data, fileName, title, metadata));
}
public Document getStructuredDocument(byte[] data, String fileName, Title title,
Map> metadata) throws ClassificationException {
logger.debug("Treating file: '" + fileName + "'");
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
addByteArray(parts, data, fileName);
return XMLReader.getDocument(getClassificationServerResponse(parts));
}
/**
* Return in a structured form the output of the classification process
*
* @param inputFile The input file to classify
* @param fileType File type of "inputFile". If the file type is not supplied
* (i.e. is null) then it will be guessed by classification
* server.
* @param title The document title
* @param metadata Map containing metadata
* @return The structured result of the classification
* @throws ClassificationException Classification exception
*/
public Result getClassifiedDocument(File inputFile, String fileType, Title title,
Map> metadata) throws ClassificationException {
return new Result(getStructuredDocument(inputFile, fileType, title, metadata));
}
public Document getStructuredDocument(File inputFile, String fileType, Title title,
Map> metadata) throws ClassificationException {
Collection parts = new ArrayList();
addTitle(parts, title);
addMetadata(parts, metadata);
addFile(parts, inputFile, fileType);
return XMLReader.getDocument(getClassificationServerResponse(parts));
}
private void addTitle(Collection parts, Title title) {
if ((title != null) && (title.getValue() != null) && (title.getValue().length() > 0)) {
parts.add(title.asFormPart());
}
}
private void addByteArray(Collection parts, Body body, FileName filename) {
if (filename == null) {
parts.add(body.asFormPart());
} else {
addByteArray(parts, body.getValue().getBytes(Charset.forName("UTF-8")), filename.getValue());
}
}
private void addByteArray(Collection parts, byte[] data, String fileName) {
parts.add(FormBodyPartBuilder.create("UploadFile", new ByteArrayBody(data, fileName)).build());
}
private void addFile(Collection parts, File inputFile, String fileType)
throws ClassificationException {
if (inputFile == null) {
throw new ClassificationException("Null input file provided");
}
if (!inputFile.exists()) {
throw new ClassificationException("Input file not found: " + inputFile.getAbsolutePath());
}
parts.add(getFormPart("UploadFile", inputFile));
}
private void addFileContent(Collection parts, byte[] fileContent, String fileName)
throws ClassificationException {
if (fileContent == null) {
throw new ClassificationException("Null input file provided");
}
parts.add(FormBodyPartBuilder.create("UploadFile", new ByteArrayBody(fileContent, fileName)).build());
}
private void addMetadata(Collection parts, Map> metadata) {
if (metadata != null) {
for (String name : metadata.keySet()) {
Collection values = metadata.get(name);
if (values != null) {
int m = 0;
for (String value : values) {
if (m == 0)
parts.add(getFormPart("meta_" + name, value));
else
parts.add(getFormPart("meta_" + name + "__" + m, value));
m++;
}
}
}
}
}
private MultipartEntityBuilder getDefaultParts() {
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
for (String parameterName : classificationConfiguration.getAdditionalParameters().keySet()) {
String value = classificationConfiguration.getAdditionalParameters().get(parameterName);
if ((value != null) && (value.length() > 0)) {
multipartEntityBuilder.addPart(getFormPart(parameterName, value));
}
}
if (classificationConfiguration.isSingleArticle())
multipartEntityBuilder.addPart(getFormPart("singlearticle", "on"));
if (classificationConfiguration.isMultiArticle())
multipartEntityBuilder.addPart(getFormPart("multiarticle", "on"));
if (classificationConfiguration.isFeedback())
multipartEntityBuilder.addPart(getFormPart("feedback", "on"));
if (classificationConfiguration.isStylesheet())
multipartEntityBuilder.addPart(getFormPart("stylesheet", "on"));
if (classificationConfiguration.isUseGeneratedKeys())
multipartEntityBuilder.addPart(getFormPart("use_generated_keys", "on"));
if (classificationConfiguration.isReturnHashCode())
multipartEntityBuilder.addPart(getFormPart("return_hash", "on"));
return multipartEntityBuilder;
}
private final static ContentType contentType = ContentType.create("text/plain", Consts.UTF_8);
private static FormBodyPart getFormPart(String name, String value) {
return FormBodyPartBuilder.create(name, new StringBody(value, contentType)).build();
}
private static FormBodyPart getFormPart(String name, File file) {
return FormBodyPartBuilder.create(name, new FileBody(file)).build();
}
private byte[] getClassificationServerResponse(Collection parts) throws ClassificationException {
MultipartEntityBuilder multipartEntityBuilder = getDefaultParts();
for (FormBodyPart part : parts)
multipartEntityBuilder.addPart(part);
if (this.getAuditUUID() != null) {
multipartEntityBuilder.addPart(getFormPart("audit_tag", this.getAuditUUID().toString()));
}
byte[] returnedData = sendPostRequest(multipartEntityBuilder.build());
logger.debug("getClassificationServerResponse - exit: " + returnedData.length);
return returnedData;
}
private byte[] getClassifications(Collection partsList) throws ClassificationException {
return getClassifications(partsList, null);
}
private byte[] getClassifications(Collection partsList, Map outMeta)
throws ClassificationException {
byte[] returnedData = getClassificationServerResponse(partsList);
if ((returnedData != null) && (outMeta != null)) {
Result result = new Result(XMLReader.getDocument(returnedData));
if (result.getMetadata() != null) {
for (String meta : result.getMetadata().keySet()) {
outMeta.put(meta, result.getMetadata().get(meta));
}
}
}
return returnedData;
}
public byte[] getClassificationServerResponse(File inputFile, String fileType, Title title,
Map> metadata) throws ClassificationException {
logger.debug("Treating file: '" + inputFile + "'");
Collection parts = new ArrayList();
addFile(parts, inputFile, fileType);
addTitle(parts, title);
addMetadata(parts, metadata);
return getClassificationServerResponse(parts);
}
public byte[] getClassificationServerResponse(byte[] fileContent, String fileName, Title title,
Map> metadata) throws ClassificationException {
logger.debug("Treating raw bytes: '" + title + "'");
Collection parts = new ArrayList();
addFileContent(parts, fileContent, fileName);
addTitle(parts, title);
addMetadata(parts, metadata);
return getClassificationServerResponse(parts);
}
private DocumentBuilder documentBuilder = null;
private String getCommandXML(String command, String publishSetName) throws ClassificationException {
if (documentBuilder == null) {
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
try {
documentBuilder = documentBuilderFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw new ClassificationException(
String.format("ParserConfigurationException building CS command: %s %s - %s", command,
publishSetName, e.getMessage()));
}
}
Document document = documentBuilder.newDocument();
Element requestElement = document.createElement("request");
requestElement.setAttribute("op", command);
document.appendChild(requestElement);
if (publishSetName != null) {
Element publishSetElement = document.createElement("publish_set");
publishSetElement.appendChild(document.createTextNode(publishSetName));
requestElement.appendChild(publishSetElement);
}
StringWriter stringWriter = new StringWriter();
try {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.ENCODING, "utf-8");
DOMSource source = new DOMSource(document);
StreamResult destination = new StreamResult(stringWriter);
transformer.transform(source, destination);
} catch (TransformerException e) {
throw new ClassificationException(String.format("TransformerException building CS command: %s %s - %s",
command, publishSetName, e.getMessage()));
}
return stringWriter.toString();
}
private byte[] sendPostRequest(String commandString, File pakFile) throws ClassificationException {
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder.create();
if (pakFile != null) {
FormBodyPart filePart = FormBodyPartBuilder.create("UploadFile", new FileBody(pakFile)).build();
multipartEntityBuilder.addPart(filePart);
}
FormBodyPart commandPart = FormBodyPartBuilder
.create("XML_INPUT", new StringBody(commandString, ContentType.TEXT_XML)).build();
multipartEntityBuilder.addPart(commandPart);
return sendPostRequest(multipartEntityBuilder.build());
}
private PoolingHttpClientConnectionManager poolingConnectionManager;
private RequestConfig requestConfig;
private int clientPoolSize = 2;
public int getClientPoolSize() {
return clientPoolSize;
}
public void setClientPoolSize(int clientPoolSize) {
this.clientPoolSize = clientPoolSize;
}
private CloseableHttpClient httpClient = null;
private IdleConnectionMonitorThread idleConnectionMonitorThread;
private synchronized void initialize() {
if (httpClient == null) {
httpClient = getHttpClient();
}
}
private CloseableHttpClient getHttpClient() {
poolingConnectionManager = new PoolingHttpClientConnectionManager();
poolingConnectionManager.setValidateAfterInactivity(0);
poolingConnectionManager.setDefaultMaxPerRoute(clientPoolSize);
poolingConnectionManager.setMaxTotal(clientPoolSize);
// Make sure that idle and stale connections are discarded
idleConnectionMonitorThread = new IdleConnectionMonitorThread(poolingConnectionManager);
idleConnectionMonitorThread.start();
RequestConfig.Builder requestConfigBuilder = RequestConfig.copy(RequestConfig.DEFAULT)
.setSocketTimeout(classificationConfiguration.getSocketTimeoutMS())
.setConnectTimeout(classificationConfiguration.getConnectionTimeoutMS())
.setConnectionRequestTimeout(classificationConfiguration.getConnectionTimeoutMS());
if (getProxyURL() != null) {
HttpHost proxy = HttpHost.create(getProxyURL());
requestConfigBuilder.setProxy(proxy);
}
requestConfig = requestConfigBuilder.build();
return HttpClients.custom().setDefaultRequestConfig(requestConfig)
.setSSLHostnameVerifier(new NoopHostnameVerifier())
.setConnectionManager(poolingConnectionManager).build();
}
@Override
public void close() {
if (null != idleConnectionMonitorThread) {
idleConnectionMonitorThread.shutdown();
}
if (httpClient != null) {
try {
httpClient.close();
} catch (IOException ioe) {
throw new RuntimeException("HTTP client close failed.", ioe);
}
}
}
private byte[] sendPostRequest(HttpEntity requestEntity) throws ClassificationException {
initialize();
HttpPost httpPost = null;
byte[] responseData;
try {
httpPost = new HttpPost(classificationConfiguration.getUrl());
addHeaders(httpPost);
httpPost.setEntity(requestEntity);
try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
if (response == null)
throw new ClassificationException(
"Null response from http client: " + classificationConfiguration.getUrl());
if (response.getStatusLine() == null)
throw new ClassificationException(
"Null status line from http client: " + classificationConfiguration.getUrl());
int statusCode = response.getStatusLine().getStatusCode();
HttpEntity responseEntity = response.getEntity();
logger.debug("Status: " + statusCode);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
try (InputStream responseInputStream = responseEntity.getContent()) {
IOUtils.copy(responseInputStream, byteArrayOutputStream);
}
responseData = byteArrayOutputStream.toByteArray();
if (statusCode == HttpStatus.SC_INTERNAL_SERVER_ERROR) {
throw new ClassificationException(
"Internal classification server error: " + new String(responseData, "UTF-8"));
} else if (statusCode != HttpStatus.SC_OK) {
throw new ClassificationException(
"HttpStatus: " + statusCode + " received from classification server ("
+ classificationConfiguration.getUrl() + ") " + new String(responseData, "UTF-8"));
}
}
} catch (ClientProtocolException e) {
throw new ClassificationException(
"ClientProtocolException talking to classification server" + e.getMessage());
} catch (IOException e) {
throw new ClassificationException("IOException talking to classification server" + e.getMessage());
} finally {
if (httpPost != null) {
httpPost.abort();
}
}
return responseData;
}
private static Document blankDocument = null;
private final Document getBlankStructuredDocument() throws ClassificationException {
if (blankDocument == null)
blankDocument = XMLReader
.getDocument("