Migrate final Open AFC Repository

runcmd.py

@@ -0,0 +1,108 @@
+#!/usr/bin/python
+''' This program is used to run a command in the background, with
+its output redirected to a log file. The program prints periodic
+status messages to avoid timeouts of the runner of this program.
+The exit code of the subprocess is used as this program's exit.name
+'''
+
+import sys
+import optparse
+import threading
+import os
+import subprocess
+import time
+import datetime
+
+if sys.version_info[0] >= 3:
+    # Python 3 specific definitions
+    echo_outfile = sys.stdout.buffer
+else:
+    # Python 2 specific definitions
+    echo_outfile = sys.stdout
+
+
+class StatusTimer(threading.Thread):
+    def __init__(self, timeoutSecs):
+        threading.Thread.__init__(self)
+        self.daemon = True  # Exit with the parent process
+
+        self._began = datetime.datetime.now()
+        self._timeout = timeoutSecs
+
+    def run(self):
+        while True:
+            time.sleep(self._timeout)
+            diff = datetime.datetime.now() - self._began
+            sys.stdout.write('Running for %.1f minutes...\n' %
+                             (diff.seconds / 60.0))
+            sys.stdout.flush()
+
+
+class Monitor(threading.Thread):
+    def __init__(self, stream, outFile):
+        ''' Process lines from a stream and write to the file.
+        '''
+        threading.Thread.__init__(self)
+        self.daemon = True  # Exit with the parent process
+
+        self._stream = stream
+        self._file = outFile
+
+    def run(self):
+        ''' Run within the thread context. '''
+        for line in iter(self._stream.readline, b''):
+            # Avoid duplicate line endings
+            line = line.rstrip()
+            # Tee the output per-line
+            for out in (self._file, echo_outfile):
+                out.write(line + b'\n')
+                out.flush()
+
+
+def main(argv):
+    parser = optparse.OptionParser(
+        usage='usage: %prog [options] <out file> <command> <cmd args>'
+    )
+    parser.add_option(
+        '-a', dest='append', action='store_true', default=False,
+        help='Append to the output file'
+    )
+
+    (options, args) = parser.parse_args(argv[1:])
+    if len(args) < 2:
+        parser.print_usage()
+        return 1
+
+    outFileName = args[0]
+    cmdParts = args[1:]
+
+    # Prepare output file
+    openMode = 'wb'
+    if options.append:
+        openMode += '+'
+    outFile = open(outFileName, openMode)
+
+    if os.name == 'nt':
+        useShell = True
+    else:
+        useShell = False
+
+    # Spawn the child
+    proc = subprocess.Popen(
+        cmdParts, shell=useShell,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.STDOUT,
+        close_fds=('posix' in sys.builtin_module_names)
+    )
+
+    # Wait for completion with background threads
+    mon = Monitor(proc.stdout, outFile)
+    mon.start()
+
+    exitCode = proc.wait()
+    mon.join()
+    return exitCode
+
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))