从Java应用程序启动Flume代理

我已经编写了一个Java应用程序，它构建flume配置文件并将它们写入Linux设备上的磁盘。然后，应用程序生成flume命令，并尝试通过在以下代码中运行该命令来启动flume代理：

  try {
                    Process p = Runtime.getRuntime().exec(flumeStartCommand.toString());
                    p.waitFor(); 
                    BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String line = null;
                    while ((line = in.readLine()) != null) {
                        System.out.println(line);
                    }                       

ProcessBuilder flumeCommandBuilder = new ProcessBuilder(flumeCommand);
File flumeConfigurationDirFile = new File(_flumeConfigurationDir);
flumeCommandBuilder.directory(flumeConfigurationDirFile);                       
System.out.println("Working Directory: "+ flumeCommandBuilder.directory());
flumeCommandBuilder.redirectErrorStream(true);
Process process = flumeCommandBuilder.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null)
    System.out.println("tasklist: " + line);

如果我使用flume命令并通过终端手动执行它，它就可以正常工作。当java应用程序尝试执行flume命令时，什么也没有发生。这是一个类路径问题吗

此处为Flume命令： /root/flume-flume-1.6/flume-ng-dist/target/apache-flume-1.6.0-SNAPSHOT-bin/apache-flume-1.6.0-SNAPSHOT-bin/bin/flume-ng-agent-conf-conf文件/root/flumeconfs/ConsumerGroup4.conf-name-agent\u ConsumerGroup4-Dflume.root.logger=INFO，console-Dflume.monitoring.type=http-Dflume.monitoring.port=34548

我知道嵌入式代理是另一种选择，但它们仅适用于avro接收器，这对我来说不是很有用。感谢你的任何想法。 干杯

---

Colman

对于其他试图解决此问题的人，flume命令需要分解为字符串数组中的参数，如下所示：

String[] flumeCommand = new String[]{"/root/flume-flume-1.6/flume-ng-dist/target/apache-flume-1.6.0-SNAPSHOT-bin/apache-flume-1.6.0-SNAPSHOT-bin/bin/flume-ng",
                                   "agent",
                                   "--conf",
                                   "conf",
                                   "--conf-file",
                                   _flumeConfigurationDir+Active.getFlumeConfName(),
                                   "--name",
                                   Active.getFlumeAgentName(),
                                   "-Dflume.root.logger=INFO,console",
                                   "-Dflume.monitoring.type=http",
                                   "-Dflume.monitoring.port="+Active.getFlumeMetricsPort(),
};

然后使用以下代码：

  try {
                    Process p = Runtime.getRuntime().exec(flumeStartCommand.toString());
                    p.waitFor(); 
                    BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
                    String line = null;
                    while ((line = in.readLine()) != null) {
                        System.out.println(line);
                    }                       

ProcessBuilder flumeCommandBuilder = new ProcessBuilder(flumeCommand);
File flumeConfigurationDirFile = new File(_flumeConfigurationDir);
flumeCommandBuilder.directory(flumeConfigurationDirFile);                       
System.out.println("Working Directory: "+ flumeCommandBuilder.directory());
flumeCommandBuilder.redirectErrorStream(true);
Process process = flumeCommandBuilder.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = reader.readLine()) != null)
    System.out.println("tasklist: " + line);

---

你可以把它放在脚本中，用javayup调用这个脚本，我也试过这么做。创建一个名为flume.sh的脚本，第一行启动bash shell，第二行执行上述查询。仍然没有启动代理，只是挂起…@colman如果我想在远程flume主机而不是本地计算机上执行此命令，该怎么办？