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NIFI-215: Look for the pid in the output of the ps command and do not use the --no-headers argument because it's not compatible with OSX

This commit is contained in:
Mark Payne 2014-12-31 08:24:44 -05:00
parent d879e0d640
commit 0297fa465f
1 changed files with 7 additions and 8 deletions
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15
nifi-bootstrap/src/main/java/org/apache/nifi/bootstrap/RunNiFi.java
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@ -294,25 +294,24 @@ public class RunNiFi {
// We use the "ps" command to check if the process is still running.
final ProcessBuilder builder = new ProcessBuilder();
builder.command("ps", "-p", pid, "--no-headers");
builder.command("ps", "-p", pid);
final Process proc = builder.start();
// Read how many lines are output by the 'ps' command
int lineCount = 0;
// Look for the pid in the output of the 'ps' command.
boolean running = false;
String line;
try (final InputStream in = proc.getInputStream();
final Reader streamReader = new InputStreamReader(in);
final BufferedReader reader = new BufferedReader(streamReader)) {
while ((line = reader.readLine()) != null) {
if ( !line.trim().isEmpty() ) {
lineCount++;
}
if ( line.trim().startsWith(pid) ) {
running = true;
}
}
}
// If anything was output, the process is running.
final boolean running = lineCount > 0;
// If output of the ps command had our PID, the process is running.
if ( running ) {
logger.fine("Process with PID " + pid + " is running");
} else {