Github user apiri commented on a diff in the pull request:
https://github.com/apache/nifi/pull/218#discussion_r55791913
--- Diff:
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/RunNiFi.java ---
@@ -546,6 +552,31 @@ public void status() throws IOException {
}
}
+ public void env(){
+ final Logger logger = cmdLogger;
+ final Status status = getStatus(logger);
+ if(status.getPid() == null){
+ logger.info("Apache NiFi is not running");
+ return;
+ }
+ try{
+ final Class<?>
virtualMachineClass=Class.forName("com.sun.tools.attach.VirtualMachine");
+ Method attachMethod=virtualMachineClass.getMethod("attach",
String.class);
+ Object virtualMachine=attachMethod.invoke(null, status.getPid());
+ Method
getSystemPropertiesMethod=virtualMachine.getClass().getMethod("getSystemProperties");
+ final Properties
sysProps=(Properties)getSystemPropertiesMethod.invoke(virtualMachine);
+ for(Entry<Object, Object> syspropEntry: sysProps.entrySet()){
+ logger.info(syspropEntry.getKey().toString() + " = "
+syspropEntry.getValue().toString());
+ }
+ Method
detachMethod=virtualMachineClass.getDeclaredMethod("detach");
+ detachMethod.invoke(virtualMachine);
+ }catch(ClassNotFoundException cnfe){
+ logger.error("Seems tools.jar(Linux / Windows JDK) or
classes.jar(Mac OS) is not available in classpath", cnfe);
+ }catch(Throwable t){
+ throw new RuntimeException(t);
--- End diff --
Not sure the stacktrace provides much information worthwhile to the user.
Would opt to just leave the above log error and remove this.
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