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package org.yocto.sdk.remotetools.wizards.bsp;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/**
* Receives a command to be run on a separate thread in the background
* It contains an BSPAction object that will collect the output & error
* Output lines are processed and collected into the items of BSPAction
* @author ioana.grigoropol
*
*/
public abstract class BSPThread implements Runnable {
public static final String SUCCESS = "success";
public static final String ERROR = "error";
private BSPAction bspAction;
private String command;
/**
* Receives the command to be run in the background
* @param command
*/
public BSPThread(String command) {
this.command = command;
this.bspAction = new BSPAction(null, null);
}
@Override
public void run() {
ArrayList<String> values = new ArrayList<String>();
try {
ProcessBuilder builder = new ProcessBuilder(new String[] {"bash", "-c", command});
// redirect error stream to collect both output & error
builder.redirectErrorStream(true);
Process process = builder.start();
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = null;
String errorMessage = "";
while ( (line = br.readLine()) != null) {
String[] result = processLine(line);
String status = result[0];
String value = result[1];
if (status.equals(ERROR) && !value.isEmpty()) {
errorMessage += value;
continue;
}
if (!value.isEmpty())
values.add(value);
}
int exitVal = process.waitFor();
// if the background process did not exit with 0 code, we should set the status accordingly
if (exitVal != 0) {
bspAction.setMessage(errorMessage);
bspAction.setItems(null);
}
} catch (Exception e) {
bspAction.setMessage(e.getMessage());
bspAction.setItems(null);
}
if (!values.isEmpty()) {
bspAction.setMessage(null);
bspAction.setItems(values.toArray(new String[values.size()]));
}
}
/**
* Each command ran in the background will have a different output and a different way of processing it
* @param line
* @return
*/
protected abstract String[] processLine(String line);
public BSPAction getBspAction() {
return bspAction;
}
public void setBspAction(BSPAction bspAction) {
this.bspAction = bspAction;
}
public String getCommand() {
return command;
}
public void setCommand(String command) {
this.command = command;
}
}
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