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/*******************************************************************************
* ============LICENSE_START====================================================
* * org.onap.aai
* * ===========================================================================
* * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* * Copyright © 2017 Amdocs
* * ===========================================================================
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
* * ============LICENSE_END====================================================
* *
* * ECOMP is a trademark and service mark of AT&T Intellectual Property.
* *
******************************************************************************/
package com.att.cssa.rserv;
import java.io.IOException;
import java.util.List;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.att.inno.env.Env;
import com.att.inno.env.TimeTaken;
import com.att.inno.env.Trans;
public abstract class RServlet<TRANS extends Trans> implements Servlet {
private Routes<TRANS> routes = new Routes<TRANS>();
private ServletConfig config;
@Override
public void init(ServletConfig config) throws ServletException {
this.config = config;
}
@Override
public ServletConfig getServletConfig() {
return config;
}
public void route(Env env, HttpMethods meth, String path, HttpCode<TRANS, ?> code, String ... moreTypes) {
Route<TRANS> r = routes.findOrCreate(meth,path);
r.add(code,moreTypes);
env.init().log(r.report(code),code);
}
@Override
public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
HttpServletRequest request = (HttpServletRequest)req;
HttpServletResponse response = (HttpServletResponse)res;
@SuppressWarnings("unchecked")
TRANS trans = (TRANS)req.getAttribute(TransFilter.TRANS_TAG);
if(trans==null) {
response.setStatus(404); // Not Found, because it didn't go through TransFilter
return;
}
Route<TRANS> route;
HttpCode<TRANS,?> code=null;
String ct = req.getContentType();
TimeTaken tt = trans.start("Resolve to Code", Env.SUB);
try {
// routes have multiple code sets. This object picks the best code set
// based on Accept or Content-Type
CodeSetter<TRANS> codesetter = new CodeSetter<TRANS>(trans,request,response);
// Find declared route
route = routes.derive(request, codesetter);
if(route==null) {
String method = request.getMethod();
trans.checkpoint("No Route matches "+ method + ' ' + request.getPathInfo());
response.setStatus(404); // Not Found
} else {
// Find best Code in Route based on "Accepts (Get) or Content-Type" (if exists)
code = codesetter.code();// route.getCode(trans, request, response);
}
} finally {
tt.done();
}
if(route!=null && code!=null) {
StringBuilder sb = new StringBuilder(72);
sb.append(route.auditText);
sb.append(',');
sb.append(code.desc());
if(ct!=null) {
sb.append(", ContentType: ");
sb.append(ct);
}
tt = trans.start(sb.toString(),Env.SUB);
try {
/*obj = */
code.handle(trans, request, response);
response.flushBuffer();
} catch (ServletException e) {
trans.error().log(e);
throw e;
} catch (Exception e) {
trans.error().log(e,request.getMethod(),request.getPathInfo());
throw new ServletException(e);
} finally {
tt.done();
}
}
}
@Override
public String getServletInfo() {
return "RServlet for Jetty";
}
@Override
public void destroy() {
}
public String applicationJSON(Class<?> cls, String version) {
StringBuilder sb = new StringBuilder();
sb.append("application/");
sb.append(cls.getSimpleName());
sb.append("+json");
sb.append(";charset=utf-8");
sb.append(";version=");
sb.append(version);
return sb.toString();
}
public String applicationXML(Class<?> cls, String version) {
StringBuilder sb = new StringBuilder();
sb.append("application/");
sb.append(cls.getSimpleName());
sb.append("+xml");
sb.append(";charset=utf-8");
sb.append(";version=");
sb.append(version);
return sb.toString();
}
public List<RouteReport> routeReport() {
return routes.routeReport();
}
}
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