Examples of com.dianping.cat.message.Transaction

com.dianping.cat.message.Transaction

Transaction is any interesting unit of work that takes time to complete and may fail.

Basically, all data access across the boundary needs to be logged as a Transaction since it may fail and time consuming. For example, URL request, disk IO, JDBC query, search query, HTTP request, 3rd party API call etc.

Sometime if A needs call B which is owned by another team, although A and B are deployed together without any physical boundary. To make the ownership clear, there could be some Transaction logged when A calls B.

Most of Transaction should be logged in the infrastructure level or framework level, which is transparent to the application.

All CAT message will be constructed as a message tree and send to back-end for further analysis, and for monitoring. Only Transaction can be a tree node, all other message will be the tree leaf.　The transaction without other messages nested is an atomic transaction.
@author Frankie Wu

    event.complete();
  }


  protected Transaction newTransaction(String type, String name) {
    DefaultMessageProducer cat = (DefaultMessageProducer) Cat.getProducer();
    Transaction transaction = cat.newTransaction(m_current, type, name);


    return transaction;
  }

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  }


  @Test
  public void sendMetric() throws Exception {
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("Type", "Name");


      Cat.logMetric("name", "key1", "value1", "key2", "value2");


      t.complete();
    }


    Thread.sleep(1000);
  }

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  }


  @Test
  public void sentHackPigenTransaction() throws Exception {
    for (int i = 0; i < 200; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonCall", "Method3");
      Cat.getProducer().newEvent("PigeonCall.server", "192.168.7.24:8080");
      Cat.getProducer().logEvent("RemoteCall", "Pigeon", Message.SUCCESS, "MessageID");
      t.addData("key and value");


      Thread.sleep(1);
      Cat.getManager().getThreadLocalMessageTree().setDomain("Pigeon");
      Cat.getManager().getThreadLocalMessageTree().setMessageId("Cat-c0a81a38-374214-1203");
      t.complete();
    }
  }

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  }


  @Test
  public void sendPigeonClientTransaction() throws Exception {
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonCall", "Method3");
      Cat.getProducer().newEvent("PigeonCall.server", "192.168.64." + i + ":2280");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonCall", "Method3");
      Cat.getProducer().newEvent("PigeonCall.server", "192.168.64.11:2280");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }
    for (int i = 0; i < 200; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonCall", "Method3");
      Cat.getProducer().newEvent("PigeonCall.server", "192.168.7.24:8080");
      Cat.getProducer().logEvent("RemoteCall", "Test", Message.SUCCESS, "MessageID");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }


    for (int i = 0; i < 300; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonCall", "Method3");
      Cat.getProducer().newEvent("PigeonCall.server", "192.168.7.39:8080");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }
    Thread.sleep(100);
  }

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  }


  @Override
  public ModelResponse<T> invoke(ModelRequest request) {
    ModelResponse<T> response = new ModelResponse<T>();
    Transaction t = newTransaction("ModelService", getClass().getSimpleName());
    t.addData("thread", Thread.currentThread());


    try {
      T model = buildModel(request);


      response.setModel(model);
      t.setStatus(Message.SUCCESS);
    } catch (Exception e) {
      logError(e);
      t.setStatus(e);
      response.setException(e);
    } finally {
      t.complete();
    }


    return response;
  }

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  }


  @Test
  public void sendPigeonServerTransaction() throws Exception {
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonService", "Method6");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.77");
      t.addData("key and value");


      Thread.sleep(51);
      t.complete();
    }
    for (int i = 0; i < 200; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonService", "Method8");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.20");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }


    for (int i = 0; i < 300; i++) {
      Transaction t = Cat.getProducer().newTransaction("PigeonService", "Method5");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.231");
      t.addData("key and value");


      Thread.sleep(1);
      t.complete();
    }
    Thread.sleep(100);
  }

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  }


  @Test
  public void sendCacheTransaction() throws Exception {
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("Cache.kvdb", "Method6");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.77");
      t.addData("key and value");


      Thread.sleep(11);
      Transaction t2 = Cat.getProducer().newTransaction("Cache.local", "Method");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.77");
      t2.addData("key and value");


      Thread.sleep(11);
      t2.complete();
      t.complete();
    }
  }

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  }


  @Test
  public void sendLongCacheTransaction() throws Exception {
    for (int i = 0; i < 100; i++) {
      Transaction t = Cat.getProducer().newTransaction("Cache.kvdb", "Method6");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.77");
      t.addData("key and value");


      Thread.sleep(11);
      Transaction t2 = Cat.getProducer().newTransaction("Cache.local", "Method");
      Cat.getProducer().newEvent("PigeonService.client", "192.168.7.77");
      t2.addData("key and value");


      Thread.sleep(11);
      t2.complete();
      t.complete();
    }
  }

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  }


  @Test
  public void sendLongURLTransaction() throws Exception {
    for (int i = 0; i < 10; i++) {
      Transaction t = Cat.getProducer().newTransaction("URL", "Method6");
      t.addData("key and value");
      Thread.sleep(60);
      t.complete();
    }
  }

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  }


  @Override
  public ModelResponse<T> invoke(ModelRequest request) {
    ModelResponse<T> response = new ModelResponse<T>();
    Transaction t = newTransaction("ModelService", getClass().getSimpleName());


    try {
      URL url = buildUrl(request);


      t.addData(url.toString());


      InputStream in = Urls.forIO().connectTimeout(1000).readTimeout(5000).openStream(url.toExternalForm());
      GZIPInputStream gzip = new GZIPInputStream(in);
      String xml = Files.forIO().readFrom(gzip, "utf-8");


      int len = xml == null ? 0 : xml.length();


      t.addData("length", len);


      if (len > 0) {
        T report = buildModel(xml);


        response.setModel(report);
        t.setStatus(Message.SUCCESS);
      } else {
        t.setStatus("NoReport");
      }
    } catch (Exception e) {
      t.setStatus(e);
    } finally {
      t.complete();
    }


    return response;
  }

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