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package server.provider.rest.server;
import java.io.StringReader;
import javax.xml.ws.WebServiceContext;
import java.io.ByteArrayInputStream;
import javax.xml.ws.Provider;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.ws.WebServiceProvider;
import javax.xml.ws.Service;
import javax.xml.ws.ServiceMode;
import javax.xml.ws.handler.MessageContext;
import javax.annotation.Resource;
import javax.xml.ws.http.HTTPException;
import java.util.Collections;
import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import javax.xml.ws.WebServiceException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import javax.activation.DataHandler;
import javax.jws.HandlerChain;
@HandlerChain(file="handler.xml")
@WebServiceProvider
@ServiceMode(value=Service.Mode.MESSAGE)
public class HelloImpl implements Provider<Source> {
private int bodyIndex = 0;
private String[] body = {
"<HelloResponse xmlns=\"urn:test:types\"><argument xmlns=\"\">foo</argument><extra xmlns=\"\">bar</extra></HelloResponse>",
"<ans1:HelloResponse xmlns:ans1=\"urn:test:types\"><argument>foo</argument><extra>bar</extra></ans1:HelloResponse>"
};
@Resource(type=Object.class)
protected WebServiceContext wsContext;
private byte[] getSource() {
int i = (++bodyIndex)%body.length;
return body[i].getBytes();
}
public Source invoke(Source source) {
MessageContext mc = wsContext.getMessageContext();
String method = (String)mc.get(MessageContext.HTTP_REQUEST_METHOD);
if (method.equals("HEAD")) {
return head(source, mc);
} else if (method.equals("GET")) {
return get(source, mc);
} else if (method.equals("POST")) {
return post(source, mc);
} else if (method.equals("PUT")) {
return put(source, mc);
} else if (method.equals("DELETE")) {
return delete(source, mc);
}
HTTPException ex = new HTTPException(404);
throw ex;
}
private Source head(Source source, MessageContext mc) {
Map <String, List<String>> hdrs = new HashMap<String, List<String>>();
hdrs.put("custom-header",
Collections.singletonList("custom-head-value"));
mc.put(MessageContext.HTTP_RESPONSE_HEADERS, hdrs);
mc.put(MessageContext.HTTP_RESPONSE_CODE, 201);
// for HEAD, no content goes on the wire. Looks like servlet
// is sending content on the wire !
// But send some source so that it's not oneway
//return new StreamSource(new ByteArrayInputStream(getSource()));
return new StreamSource();
}
private Source get(Source source, MessageContext mc) {
Map <String, List<String>> hdrs = new HashMap<String, List<String>>();
hdrs.put("custom-header",
Collections.singletonList("custom-get-value"));
mc.put(MessageContext.HTTP_RESPONSE_HEADERS, hdrs);
String query = (String)mc.get(MessageContext.QUERY_STRING);
String path = (String)mc.get(MessageContext.PATH_INFO);
System.out.println("Query String = "+query);
System.out.println("PathInfo = "+path);
if (query != null && query.equals("a=%3C%3Fxml+version%3D%221.0%22%3E&b=c")) {
return new StreamSource(new ByteArrayInputStream(getSource()));
} else if (path != null && path.equals("/a/b")) {
return new StreamSource(new ByteArrayInputStream(getSource()));
} else {
HTTPException ex = new HTTPException(404);
throw ex;
}
}
private Source post(Source source, MessageContext mc) {
// check request Source content
String str;
try {
str = getStringFromSource(source);
//System.out.println(str);
} catch(Exception e) {
throw new WebServiceException(
"POST doesn't have expected content", e);
}
if (str.indexOf("HelloRequest") == -1) {
throw new WebServiceException("POST doesn't have expected content");
}
// configure response
Map <String, List<String>> hdrs = new HashMap<String, List<String>>();
hdrs.put("custom-header",
Collections.singletonList("custom-post-value"));
mc.put(MessageContext.HTTP_RESPONSE_HEADERS, hdrs);
mc.put(MessageContext.HTTP_RESPONSE_CODE, 201);
if(str.indexOf("NO_ATTACHMENTS") == -1) {
// Add an attachment to the response
Map<String, DataHandler> att = new HashMap<String, DataHandler>();
Source xmlAtt = new StreamSource(new StringReader("<ok/>"));
att.put("<abcd@example.org>", new DataHandler(xmlAtt, "text/xml"));
mc.put(MessageContext.OUTBOUND_MESSAGE_ATTACHMENTS, att);
}
return new StreamSource(new ByteArrayInputStream(getSource()));
}
private Source put(Source source, MessageContext mc) {
// check request Source content
String str;
try {
str = getStringFromSource(source);
} catch(Exception e) {
throw new WebServiceException(
"PUT doesn't have expected content", e);
}
if (str.indexOf("HelloRequest") == -1) {
throw new WebServiceException("PUT doesn't have expected content");
}
// configure response
Map <String, List<String>> hdrs = new HashMap<String, List<String>>();
hdrs.put("custom-header",
Collections.singletonList("custom-put-value"));
mc.put(MessageContext.HTTP_RESPONSE_HEADERS, hdrs);
mc.put(MessageContext.HTTP_RESPONSE_CODE, 201);
return new StreamSource(new ByteArrayInputStream(getSource()));
}
public Source delete(Source source, MessageContext mc) {
Map <String, List<String>> hdrs = new HashMap<String, List<String>>();
hdrs.put("custom-header",
Collections.singletonList("custom-delete-value"));
mc.put(MessageContext.HTTP_RESPONSE_HEADERS, hdrs);
mc.put(MessageContext.HTTP_RESPONSE_CODE, 201);
//return new StreamSource(new ByteArrayInputStream(getSource()));
return new StreamSource();
}
private String getStringFromSource(Source source) throws Exception {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
StreamResult sr = new StreamResult(bos );
Transformer trans = TransformerFactory.newInstance().newTransformer();
Properties oprops = new Properties();
oprops.put(OutputKeys.OMIT_XML_DECLARATION, "yes");
trans.setOutputProperties(oprops);
trans.transform(source, sr);
bos.flush();
return bos.toString();
}
}