Examples of azkaban.util.json.JSONUtils

azkaban.util.json.JSONUtils
There are many implementations of JSON writers/parsers. This is to wrap them so we aren't so sticky on any given implementation. Also wraps all the exception handling. This isolates this dependency in case we want to change it in the future. The current implementation uses org.json since it's simple and writes nice looking json. @author Richard Park

 */
public class JSONUtilTest {
    @SuppressWarnings("unchecked")
  @Test
    public void objectFromString() throws Exception {
      JSONUtils utils = new JSONUtils();
      
      String jsonTest = "{\"test\":[1,2,\"tree\"], \"test2\":{\"a\":\"b\"}, \"test4\":\"bye\"}";
      Object obj = null;
      try {
        obj = utils.fromJSONString(jsonTest);
      }
      catch (Exception e) {
        e.printStackTrace();
        throw e;
      }

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    }
    
    @SuppressWarnings("unchecked")
  @Test
    public void objectFromStream() throws Exception {
      JSONUtils utils = new JSONUtils();
      
      String jsonTest = "{\"test\":[1,2,\"tree\"], \"test2\":{\"a\":\"b\"}, \"test4\":\"bye\"}";
      StringReader reader = new StringReader(jsonTest);
      Object obj = null;
      try {
        obj = utils.fromJSONStream(reader);
      }
      catch (Exception e) {
        e.printStackTrace();
        throw e;
      }

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    }
    
    @SuppressWarnings("unchecked")
  @Test
    public void backAndForth() throws Exception {
      JSONUtils utils = new JSONUtils();
      
      String jsonTest = "{\"test\":[1,2,\"tree\"], \"test2\":{\"a\":\"b\"}, \"test4\":\"bye\"}";
      Map oldObj = null;
      try {
        oldObj = utils.fromJSONString(jsonTest);
      }
      catch (Exception e) {
        e.printStackTrace();
        throw e;
      }
      System.out.println(oldObj);
      String returnString = utils.toJSONString(oldObj);
      System.out.println(returnString);
      Map obj = null;
      try {
        obj = utils.fromJSONString(returnString);
      }
      catch (Exception e) {
        e.printStackTrace();
        throw e;
      }

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          // Disable all proper values
          ExecutableFlow executableFlow = holder.getFlow();
          traverseFlow(disabledJobs, executableFlow);
          
        PrintWriter writer = resp.getWriter();
        JSONUtils jsonUtils = new JSONUtils();
        HashMap<String,Object> results = new HashMap<String,Object>();
        
          try {
            this.getApplication().getJobExecutorManager().execute(holder);
            results.put("id", holder.getFlow().getId());
            results.put("success", true);
            results.put("message", String.format("Executing Flow[%s].", id));
          } catch(Exception e) {
            results.put("id", holder.getFlow().getId());
            results.put("error", true);
            results.put("message", String.format("Error running Flow[%s]. " + e.getMessage(), id));
          }
          
          writer.print(jsonUtils.toJSONString(results));
          writer.flush();
        }
        else if (action.equals("run")) {
          String name = getParam(req, "name");
          String value = req.getParameter("disabled");
          String[] disabledValues = value.split(",");
          HashSet<String> disabledJobs = new HashSet<String>();
          for (String disabled : disabledValues) {
            if (!disabled.isEmpty()) {
              disabledJobs.add(disabled);
            }
          }
          
             ExecutableFlow flow = allFlows.createNewExecutableFlow(name);
             if (flow == null) {
            addError(req, "Job " + name + " not found.");
             }
             traverseFlow(disabledJobs, flow);
        PrintWriter writer = resp.getWriter();
        JSONUtils jsonUtils = new JSONUtils();
        HashMap<String,Object> results = new HashMap<String,Object>();
        
          try {
            this.getApplication().getJobExecutorManager().execute(flow);
            results.put("success", true);
            results.put("message", String.format("Executing Flow[%s].", name));
            results.put("id", flow.getId());
              
          } catch(Exception e) {
            results.put("error", true);
            results.put("message", String.format("Error running Flow[%s]. " + e.getMessage(), name));
          }
          
          writer.print(jsonUtils.toJSONString(results));
          writer.flush();
        }
        
       
    }

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azkaban.utils.json.JSONUtilTest

azkaban.web.pages.FlowExecutionServlet

org.json.JSONObject

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