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

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