appc-config/appc-flow-controller/provider/src/main/java/org/onap/appc/flow/controller/node/RestServiceNode.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : APP-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property.  All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.appc.flow.controller.node;
  22
  23 import java.io.FileInputStream;
  24 import java.io.IOException;
  25 import java.io.InputStream;
  26 import java.util.HashMap;
  27 import java.util.Map;
  28 import java.util.Properties;
  29
  30 import org.apache.commons.lang3.StringUtils;
  31 import org.onap.appc.flow.controller.data.Transaction;
  32 import org.onap.appc.flow.controller.executorImpl.RestExecutor;
  33 import org.onap.appc.flow.controller.utils.FlowControllerConstants;
  34 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  35 import org.onap.ccsdk.sli.core.sli.SvcLogicException;
  36 import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
  37
  38 import com.att.eelf.configuration.EELFLogger;
  39 import com.att.eelf.configuration.EELFManager;
  40 import com.fasterxml.jackson.core.JsonProcessingException;
  41 import com.fasterxml.jackson.databind.JsonNode;
  42 import com.fasterxml.jackson.databind.ObjectMapper;
  43
  44 public class RestServiceNode implements SvcLogicJavaPlugin{
  45
  46
  47     private static final  EELFLogger log = EELFManager.getInstance().getLogger(RestServiceNode.class);
  48     private static final String SDNC_CONFIG_DIR_VAR = "SDNC_CONFIG_DIR";
  49
  50     public void sendRequest(Map<String, String> inParams, SvcLogicContext ctx) throws SvcLogicException {
  51         String fn = "RestServiceNode.sendRequest";
  52         log.info("Received processParamKeys call with params : " + inParams);
  53         String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
  54         try
  55         {
  56             responsePrefix = StringUtils.isNotBlank(responsePrefix) ? (responsePrefix+".") : "";
  57             //Remove below for Block
  58             for (Object key : ctx.getAttributeKeySet()) {
  59                 String parmName = (String) key;
  60                 String parmValue = ctx.getAttribute(parmName);
  61                 log.info(fn  + "Getting Key = "  + parmName + "and Value = " +  parmValue);
  62             }
  63
  64             send(ctx, inParams);
  65             ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS, FlowControllerConstants.OUTPUT_STATUS_SUCCESS);
  66
  67         } catch (Exception e) {
  68             ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_STATUS, FlowControllerConstants.OUTPUT_STATUS_FAILURE);
  69             ctx.setAttribute(responsePrefix + FlowControllerConstants.OUTPUT_PARAM_ERROR_MESSAGE, e.getMessage());
  70             e.printStackTrace();
  71             log.error("Error Message : "  + e.getMessage());
  72             throw new SvcLogicException(e.getMessage());
  73         }
  74     }
  75
  76     public void send(SvcLogicContext ctx, Map<String, String> inParams) throws Exception{
  77     try{
  78             Properties prop = loadProperties();
  79             log.info("Loaded Properties " + prop.toString());
  80             String responsePrefix = inParams.get(FlowControllerConstants.INPUT_PARAM_RESPONSE_PRIFIX);
  81             RestExecutor restRequestExecutor = new RestExecutor();
  82             String resourceUri = "";
  83             if(ctx.getAttribute(FlowControllerConstants.INPUT_URL) != null && !(ctx.getAttribute(FlowControllerConstants.INPUT_URL).isEmpty()))
  84                 resourceUri = ctx.getAttribute(FlowControllerConstants.INPUT_URL);
  85             else{
  86                 resourceUri = resourceUri.concat(FlowControllerConstants.HTTP);
  87                 log.info("resourceUri=  " + resourceUri );
  88                 resourceUri = resourceUri.concat(ctx.getAttribute(FlowControllerConstants.INPUT_HOST_IP_ADDRESS));
  89                 resourceUri = resourceUri.concat(":");
  90                 resourceUri = resourceUri.concat(ctx.getAttribute(FlowControllerConstants.INPUT_PORT_NUMBER));
  91
  92                 if(ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT) != null && !ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT).isEmpty()){
  93                     resourceUri = resourceUri.concat("/").concat(ctx.getAttribute(FlowControllerConstants.INPUT_CONTEXT));
  94                     log.info("resourceUri= " + resourceUri );
  95                 }
  96                 else if(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".context")) != null ){
  97                     log.info("resourceUri = " + resourceUri );
  98                     resourceUri = resourceUri.concat("/").concat(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".context")));
  99                 }
 100                 else
 101                     throw new Exception("Could Not found the context for operation " + ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION));
 102
 103
 104                 if(ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT) != null && !ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT).isEmpty()){
 105                     resourceUri = resourceUri.concat("/").concat(ctx.getAttribute(FlowControllerConstants.INPUT_SUB_CONTEXT));
 106                     log.info("resourceUri" + resourceUri );
 107                 }
 108                 else if(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".sub-context")) != null ){
 109                     resourceUri = resourceUri.concat("/").concat(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".sub-context")));
 110                     log.info("resourceUri" + resourceUri );
 111                 }
 112             }
 113
 114             log.info("Rest Constructed URL : " + resourceUri);
 115             Transaction transaction = new Transaction();
 116
 117             transaction.setExecutionEndPoint(resourceUri);
 118             transaction.setExecutionRPC(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE));
 119             transaction.setAction(FlowControllerConstants.INPUT_REQUEST_ACTION);
 120             if(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE) == null || ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION_TYPE).isEmpty())
 121                 throw new Exception("Dont know REST operation for Action " + transaction.getExecutionRPC());
 122             if(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION) == null || ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).isEmpty())
 123                 throw new Exception("Dont know request-action " + transaction.getAction());
 124
 125             //This code need to get changed to get the UserID and pass from a common place.
 126             if(transaction.getuId() == null )
 127                 transaction.setuId(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".default-rest-user")));
 128             if(transaction.getPswd() == null)
 129                 transaction.setPswd(prop.getProperty(ctx.getAttribute(FlowControllerConstants.INPUT_REQUEST_ACTION).concat(".default-rest-pass")));
 130
 131             HashMap<String, String> output = restRequestExecutor.execute(transaction, ctx);
 132
 133             if(output.get("restResponse") !=null && isValidJSON(output.get("restResponse")) != null)
 134             {
 135                     ctx.setAttribute(responsePrefix + "." + FlowControllerConstants.OUTPUT_STATUS_MESSAGE , output.get("restResponse"));
 136 //                JsonNode restResponse = isValidJSON(output.get("restResponse"));
 137 //                for (String key : inParams.keySet()) {
 138 //                    if(key !=null &&  key.startsWith("output-")){
 139 //                            log.info("Found Key = " + key);
 140 //                            log.info("Found Key in Params " + inParams.get(key) + ".");
 141 //                            JsonNode setValue =  restResponse.findValue(inParams.get(key));
 142 //                             log.info("Found value = " + setValue);
 143 //                             if(setValue !=null && setValue.textValue() !=null && !setValue.textValue().isEmpty())
 144 //                                 ctx.setAttribute(responsePrefix + "." + key, setValue.textValue());
 145 //                             else
 146 //                                 ctx.setAttribute(responsePrefix + "." + key, null);
 147 //                    }
 148 //                }
 149             }
 150             log.info("Response from Rest :" );
 151         }
 152         catch(Exception e)
 153         {
 154             e.printStackTrace();
 155             log.error("Error Message " + e.getMessage());
 156             throw e;
 157         }
 158     }
 159
 160     private Properties loadProperties() throws Exception {
 161         Properties props = new Properties();
 162         String propDir = System.getenv(SDNC_CONFIG_DIR_VAR);
 163         if (propDir == null)
 164             throw new Exception("Cannot find Property file -" + SDNC_CONFIG_DIR_VAR);
 165         String propFile = propDir + FlowControllerConstants.APPC_FLOW_CONTROLLER;
 166         InputStream propStream = new FileInputStream(propFile);
 167         try
 168         {
 169             props.load(propStream);
 170         }
 171         catch (Exception e)
 172         {
 173             throw new Exception("Could not load properties file " + propFile, e);
 174         }
 175         finally
 176         {
 177             try
 178             {
 179                 propStream.close();
 180             }
 181             catch (Exception e)
 182             {
 183                 log.warn("Could not close FileInputStream", e);
 184             }
 185         }
 186         // TODO Auto-generated method stub
 187         return props;
 188     }
 189
 190     public JsonNode isValidJSON(String json) throws IOException {
 191         JsonNode output = null;
 192         log.info("Received response from Interface " + json);
 193         if(json ==null  || json.isEmpty())
 194             return null;
 195         try{
 196             ObjectMapper objectMapper = new ObjectMapper();
 197             output = objectMapper.readTree(json);
 198         } catch(JsonProcessingException e){
 199             log.warn("Response received from interface is not a valid JSON block" + json);
 200             return null;
 201         }
 202         log.info("state is " + output.findValue("state"));
 203
 204         return output;
 205     }
 206 }