brooklyn.event.feed.shell
[Java] Class ShellFeed

java.lang.Object
  brooklyn.event.feed.AbstractFeed
      brooklyn.event.feed.shell.ShellFeed

public class ShellFeed
extends AbstractFeed

Provides a feed of attribute values, by executing shell commands (on the local machine where this instance of brooklyn is running). Useful e.g. for paas tools such as Cloud Foundry vmc which operate against a remote target. Example usage (e.g. in an entity that extends SoftwareProcessImpl):

 private ShellFeed feed;
 
 //@Override
 protected void connectSensors() {
   super.connectSensors();
   
   feed = ShellFeed.builder()
       .entity(this)
       .machine(mySshMachineLachine)
       .poll(new ShellPollConfig(DISK_USAGE)
           .command("df -P | grep /dev")
           .failOnNonZeroResultCode(true)
           .onSuccess(new Function() {
                public Long apply(SshPollValue input) {
                  String[] parts = input.getStdout().split("[ \\t]+");
                  return Long.parseLong(parts[2]);
                }))
       .build();
 }
 
 {
literal:
@}Override
 protected void disconnectSensors() {
   super.disconnectSensors();
   if (feed != null) feed.stop();
 }
 }
 

Authors:

aled

See Also:

SshFeed

FunctionFeed

log

public static final Logger log

ShellFeed

protected java.lang.Object ShellFeed(ShellFeed.Builder builder)

builder

public static ShellFeed.Builder builder()

preStart

protected void preStart() {
protected void preStart()

Brooklyn Multi-Cloud Application Management Platform
brooklyncentral.github.com. Apache License. © 2012.