在Java开始bbcomm V3彭博API

Question

当我使用Java Bloomber V3 API它通常工作。但是，有时候，特别是在重新启动后，bbcomm.exe没有在后台运行。我可以通过运行blp.exe手动启动它，但我想知道是否有通过API这样做的呢？

我仍然在等待帮助，帮助...

Answer 1

聊到服务台后，事实证明，在64位Windows，64位JVM bbcomm下运行不会自动启动。这在32位Java下不会发生 - 在32位bbcomm下自动运行。

所以我的解决方案，要么等待问题彭博是固定的（现在我理解它），或检查这种特殊情况下。

要检查的具体情况：

• 如果在64位Windows上运行（系统属性os.arch）
• ，如果64位JVM下运行（系统属性java.vm.name）
• 然后试着开始会话
• 如果失败，假设bbcomm.exe没有运行。尝试运行bbcomm.exe使用Runtime.exec()

我还没有测试过以上。它可能与Bloomberg对64位虚拟机的问题完全相同。

Answer 2

bbcomm.exe由V3 API自动启动。

Answer 3

我们在使用.net API的Windows 7 64位机器上遇到同样的问题。 bbcomm.exe不会自动启动，唯一的解决方法是启动“Bloomberg API DEMO”应用程序...

Answer 4

花费了一些时间与帮助帮助后，似乎bbcomm开始或者当您使用Excel API或运行API演示。但是，从Java API调用它时不会自动启动。可能的方法来启动它是：

• 添加注册表条目自动启动bbcomm在启动时：在HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run添加一个名为bbcomm与价值C:\blp\API\bbcomm.exe一个字符串值 - 但打开这仍然可见一个命令行窗口，所以不一个真正的选择（如果你关闭该窗口就终止bbcomm过程）
• 创建一个批处理文件START /MIN C:\blp\API\bbcomm.exe和替换与（未测试）的注册表项手动调用bbcomm默默
• 从Java推出bbcomm代码已经建议。作为参考，我在我正在使用的代码下面发布。

private final static Logger logger = LoggerFactory.getLogger(BloombergUtils.class); 
private final static String BBCOMM_PROCESS = "bbcomm.exe"; 
private final static String BBCOMM_FOLDER = "C:/blp/API"; 

/** 
* 
* @return true if the bbcomm process is running 
*/ 
public static boolean isBloombergProcessRunning() { 
    return ShellUtils.isProcessRunning(BBCOMM_PROCESS); 
} 

/** 
* Starts the bbcomm process, which is required to connect to the Bloomberg data feed 
* @return true if bbcomm was started successfully, false otherwise 
*/ 
public static boolean startBloombergProcessIfNecessary() { 
    if (isBloombergProcessRunning()) { 
     logger.info(BBCOMM_PROCESS + " is started"); 
     return true; 
    } 

    Callable<Boolean> startBloombergProcess = getStartingCallable(); 
    return getResultWithTimeout(startBloombergProcess, 1, TimeUnit.SECONDS); 
} 

private static Callable<Boolean> getStartingCallable() { 
    return new Callable<Boolean>() { 
     @Override 
     public Boolean call() throws Exception { 
      logger.info("Starting " + BBCOMM_PROCESS + " manually"); 
      ProcessBuilder pb = new ProcessBuilder(BBCOMM_PROCESS); 
      pb.directory(new File(BBCOMM_FOLDER)); 
      pb.redirectErrorStream(true); 
      Process p = pb.start(); 
      BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream())); 
      String line; 
      while ((line = reader.readLine()) != null) { 
       if (line.toLowerCase().contains("started")) { 
        logger.info(BBCOMM_PROCESS + " is started"); 
        return true; 
       } 
      } 
      return false; 
     } 
    }; 

} 

private static boolean getResultWithTimeout(Callable<Boolean> startBloombergProcess, int timeout, TimeUnit timeUnit) { 
    ExecutorService executor = Executors.newSingleThreadExecutor(new ThreadFactory() { 

     @Override 
     public Thread newThread(Runnable r) { 
      Thread t = new Thread(r, "Bloomberg - bbcomm starter thread"); 
      t.setDaemon(true); 
      return t; 
     } 
    }); 
    Future<Boolean> future = executor.submit(startBloombergProcess); 

    try { 
     return future.get(timeout, timeUnit); 
    } catch (InterruptedException ignore) { 
     Thread.currentThread().interrupt(); 
     return false; 
    } catch (ExecutionException | TimeoutException e) { 
     logger.error("Could not start bbcomm", e); 
     return false; 
    } finally { 
     executor.shutdownNow(); 
     try { 
      if (!executor.awaitTermination(100, TimeUnit.MILLISECONDS)) { 
       logger.warn("bbcomm starter thread still running"); 
      } 
     } catch (InterruptedException ex) { 
      Thread.currentThread().interrupt(); 
     } 
    } 
} 

ShellUtils.java

public class ShellUtils { 

    private final static Logger logger = LoggerFactory.getLogger(ShellUtils.class); 

    /** 
    * @return a list of processes currently running 
    * @throws RuntimeException if the request sent to the OS to get the list of running processes fails 
    */ 
    public static List<String> getRunningProcesses() { 
     List<String> processes = new ArrayList<>(); 

     try { 
      Process p = Runtime.getRuntime().exec(System.getenv("windir") + "\\system32\\" + "tasklist.exe"); 
      BufferedReader input = new BufferedReader(new InputStreamReader(p.getInputStream())); 
      String line; 
      int i = 0; 
      while ((line = input.readLine()) != null) { 
       if (!line.isEmpty()) { 
        String process = line.split(" ")[0]; 
        if (process.contains("exe")) { 
         processes.add(process); 
        } 
       } 
      } 
     } catch (IOException e) { 
      throw new RuntimeException("Could not retrieve the list of running processes from the OS"); 
     } 

     return processes; 
    } 

    /** 
    * 
    * @param processName the name of the process, for example "explorer.exe" 
    * @return true if the process is currently running 
    * @throws RuntimeException if the request sent to the OS to get the list of running processes fails 
    */ 
    public static boolean isProcessRunning(String processName) { 
     List<String> processes = getRunningProcesses(); 
     return processes.contains(processName); 
    } 
}