gerrit.onap Code Review - ccsdk/features.git/blob

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * ONAP : ccsdk features
   4  * ================================================================================
   5  * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property.
   6  * All rights reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  *
  21  */
  22 package org.onap.ccsdk.features.sdnr.wt.dataprovider.http;
  23
  24 import java.io.IOException;
  25 import java.text.ParseException;
  26
  27 import javax.servlet.ServletException;
  28 import javax.servlet.http.HttpServlet;
  29 import javax.servlet.http.HttpServletRequest;
  30 import javax.servlet.http.HttpServletResponse;
  31
  32 import org.onap.ccsdk.features.sdnr.wt.dataprovider.data.YangFileProvider;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 public class YangSchemaHttpServlet extends HttpServlet {
  37         /**
  38          *
  39          */
  40         private static final long serialVersionUID = 1L;
  41         private static final Logger LOG = LoggerFactory.getLogger(YangSchemaHttpServlet.class);
  42
  43         private static final String schemaCachePath = "cache/schema/";
  44
  45         private final YangFileProvider fileProvider;
  46
  47         public YangSchemaHttpServlet() {
  48                 this.fileProvider = new YangFileProvider(schemaCachePath);
  49         }
  50
  51         @Override
  52         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  53
  54                 GetYangSchemaRequest request = null;
  55                 try {
  56                         request = new GetYangSchemaRequest(req);
  57                 } catch (Exception e) {
  58                         LOG.warn("bad request for yang-schema: {}", e);
  59                 }
  60                 if (request != null) {
  61                         int len;
  62                         LOG.debug("request for yang-schema for module {} with version {}", request.getModule(),
  63                                         request.getVersion());
  64                         if (request.hasVersion()) {
  65                                 boolean has=false;
  66                                 try {
  67                                         has = this.fileProvider.hasFileOrNewerForModule(request.getModule(), request.getVersion());
  68                                 } catch (ParseException e1) {
  69                                         LOG.warn("unable to parse revision: {}" ,e1);
  70                                 }
  71                                 if(has) {
  72
  73                                         try {
  74                                                 resp.setStatus(HttpServletResponse.SC_OK);
  75                                                 resp.setContentType("text/plain");
  76                                                 len = this.fileProvider.writeOutput(request.getModule(), request.getVersion(),
  77                                                                 resp.getOutputStream());
  78                                                 resp.setContentLength(len);
  79
  80                                         } catch (ParseException e) {
  81                                                 LOG.warn("unable to parse revision: {}", e);
  82                                         }catch (IOException | IllegalStateException e) {
  83                                                 LOG.warn("unable to write out module {}@{}: {}",request.getModule(), request.getVersion(), e);
  84                                         }
  85                                 } else {
  86                                         try {
  87                                                 resp.sendError(HttpServletResponse.SC_NOT_FOUND);
  88                                         }catch(IOException | IllegalStateException e) {
  89                                                 LOG.warn("unable to write out 404 res not found: {}",e);
  90                                         }
  91                                 }
  92
  93                         } else if (this.fileProvider.hasFileForModule(request.getModule())) {
  94
  95                                 try {
  96                                         resp.setStatus(HttpServletResponse.SC_OK);
  97                                         resp.setContentType("text/plain");
  98                                         len = this.fileProvider.writeOutput(request.getModule(), null, resp.getOutputStream());
  99                                         resp.setContentLength(len);
 100                                 } catch (ParseException e) {
 101                                         LOG.warn(e.getMessage());
 102                                 }catch(IOException | IllegalStateException e) {
 103                                         LOG.warn("unable to write out module {}: {}",request.getModule(), e);
 104                                 }
 105
 106                         } else {
 107                                 try {
 108                                         resp.sendError(HttpServletResponse.SC_NOT_FOUND);
 109                                 }catch(IOException | IllegalStateException e) {
 110                                         LOG.warn("unable to write out 404 res not found: {}",e);
 111                                 }
 112                         }
 113                 } else {
 114                         try {
 115                                 resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
 116                         }catch(IOException | IllegalStateException e) {
 117                                 LOG.warn("unable to write out 400 bad request: {}",e);
 118                         }
 119                 }
 120
 121         }
 122
 123 }