Package org.apache.helix.manager.zk

Examples of org.apache.helix.manager.zk.ZkClient.readData()

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  {
    ZkClient client = new ZkClient(zkServer);
    client.setZkSerializer(new ZNRecordSerializer());
    String path = HelixUtil.getMessagePath(clusterName, instanceName) + "/" + message.getId();
    client.delete(path);
    ZNRecord record = client.readData(HelixUtil.getLiveInstancePath(clusterName, instanceName));
    message.setTgtSessionId(record.getSimpleField(LiveInstanceProperty.SESSION_ID.toString()).toString());
    message.setTgtName(record.getId());
    //System.out.println(message);
    client.createPersistent(path, message.getRecord());
  }
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    // test get what we created
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_0", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getId(), msgId, "Should get what we created");
    }

    // test sync set
    for (int i = 0; i < 10; i++)
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    // test get what we set
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_0", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getSimpleFields().size(), 1, "Should have 1 simple field set");
      Assert.assertEquals(record.getSimpleField("key1"), "value1", "Should have value1 set");
    }
   
    // test sync update
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    // test get what we updated
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_0", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getSimpleFields().size(), 2, "Should have 2 simple fields set");
      Assert.assertEquals(record.getSimpleField("key2"), "value2", "Should have value2 set");
    }
   
    // test sync get
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    // test get what we created
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_1", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getId(), msgId, "Should get what we created");
    }

    // test async setChildren
    parentPath = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_1");
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    // test get what we set
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_1", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getSimpleFields().size(), 1, "Should have 1 simple field set");
      Assert.assertEquals(record.getSimpleField("key1"), "value1", "Should have value1 set");
    }
   
    // test async updateChildren
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    // test get what we updated
    for (int i = 0; i < 10; i++)
    {
      String msgId = "msg_" + i;
      String path = PropertyPathConfig.getPath(PropertyType.MESSAGES, root, "host_1", msgId);
      ZNRecord record = zkClient.readData(path);
      Assert.assertEquals(record.getSimpleFields().size(), 2, "Should have 2 simple fields set");
      Assert.assertEquals(record.getSimpleField("key2"), "value2", "Should have value2 set");
    }

    // test async getChildren
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    String path1 = "/" + root + "/test1";
    zkClient.createPersistent(path1, true);
    zkClient.writeData(path1, smallRecord);

    ZNRecord record = zkClient.readData(path1);
    Assert.assertTrue(serializer.serialize(record).length > 900 * 1024);

    // oversized data doesn't create any data on zk
    // prepare a znode of size larger than 1m
    final ZNRecord largeRecord = new ZNRecord("oversize");
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    }
    catch (HelixException e)
    {
      // OK
    }
    record = zkClient.readData(path2);
    Assert.assertNull(record);

    // oversized write doesn't overwrite existing data on zk
    record = zkClient.readData(path1);
    try
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    }
    record = zkClient.readData(path2);
    Assert.assertNull(record);

    // oversized write doesn't overwrite existing data on zk
    record = zkClient.readData(path1);
    try
    {
      zkClient.writeData(path1, largeRecord);
      Assert.fail("Should fail because data size is larger than 1M");
    }
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