trace: rename _read_events to read_events

The _read_events method is used by callers outside of
its module, so should be a public method, not private.
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NLluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
Message-id: 1475588159-30598-18-git-send-email-berrange@redhat.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

scripts/simpletrace.py

@@ -12,7 +12,7 @@
 import struct
 import re
 import inspect
-from tracetool import _read_events, Event
+from tracetool import read_events, Event
 from tracetool.backend.simple import is_string
 
 header_event_id = 0xffffffffffffffff
@@ -129,7 +129,7 @@ class Analyzer(object):
 def process(events, log, analyzer, read_header=True):
     """Invoke an analyzer on each event in a log."""
     if isinstance(events, str):
-        events = _read_events(open(events, 'r'))
+        events = read_events(open(events, 'r'))
     if isinstance(log, str):
         log = open(log, 'rb')
 
@@ -188,7 +188,7 @@ def run(analyzer):
                          '<trace-file>\n' % sys.argv[0])
         sys.exit(1)
 
-    events = _read_events(open(sys.argv[1], 'r'))
+    events = read_events(open(sys.argv[1], 'r'))
     process(events, sys.argv[2], analyzer, read_header=read_header)
 
 if __name__ == '__main__':

scripts/tracetool/__init__.py

@@ -282,7 +282,17 @@ class Event(object):
                      self)
 
 
-def _read_events(fobj):
+def read_events(fobj):
+    """Generate the output for the given (format, backends) pair.
+
+    Parameters
+    ----------
+    fobj : file
+        Event description file.
+
+    Returns a list of Event objects
+    """
+
     events = []
     for line in fobj:
         if not line.strip():
@@ -391,6 +401,6 @@ def generate(fevents, format, backends,
     tracetool.backend.dtrace.BINARY = binary
     tracetool.backend.dtrace.PROBEPREFIX = probe_prefix
 
-    events = _read_events(fevents)
+    events = read_events(fevents)
 
     tracetool.format.generate(events, format, backend)