Add a simple script to parse zLOG output from ZEO.

src/scripts/parsezeolog.py

+"""Parse the BLATHER logging generated by ZEO.
+
+An example of the log format is:
+2002-04-15T13:05:29 BLATHER(-100) ZEO Server storea(3235680, [714], 235339406490168806) ('10.0.26.30', 45514)
+"""
+
+import operator
+import re
+import time
+
+rx_time = re.compile('(\d\d\d\d-\d\d-\d\d)T(\d\d:\d\d:\d\d)')
+
+def parse_time(line):
+    """Return the time portion of a zLOG line in seconds or None."""
+    mo = rx_time.match(line)
+    if mo is None:
+        return None
+    date, time_ = mo.group(1, 2)
+    date_l = [int(elt) for elt in date.split('-')]
+    time_l = [int(elt) for elt in time_.split(':')]
+    return int(time.mktime(date_l + time_l + [0, 0, 0]))
+
+rx_meth = re.compile("ZEO Server (\w+)\((.*)\) \('(.*)', (\d+)")
+
+def parse_method(line):
+    pass
+
+def parse_line(line):
+    """Parse a log entry and return time, method info, and client."""
+    t = parse_time(line)
+    if t is None:
+        return None, None, None
+    mo = rx_meth.search(line)
+    if mo is None:
+        return None, None, None
+    meth_name = mo.group(1)
+    meth_args = mo.group(2)
+    meth_args = [s.strip() for s in meth_args.split(",")]
+    m = meth_name, tuple(meth_args)
+    c = mo.group(3), mo.group(4)
+    return t, m, c
+
+class TStats:
+    pass
+
+class TransactionParser:
+
+    def __init__(self):
+        self.transactions = []
+        self.cur_t = {}
+        self.skipped = 0
+
+    def parse(self, line):
+        t, m, c = parse_line(line)
+        if t is None:
+            return
+        name = m[0]
+        meth = getattr(self, name, None)
+        if meth is not None:
+            meth(t, m[1], c)
+
+    def tpc_begin(self, time, args, client):
+        t = TStats()
+        t.begin = time
+        t.url = args[2]
+        t.objects = []
+        self.cur_t[client] = t
+        
+    def tpc_finish(self, time, args, client):
+        t = self.cur_t.get(client, None)
+        if t is None:
+            self.skipped += 1
+            return
+        t.finish = time
+##        self.transactions.append(t)
+        self.report(t)
+        self.cur_t[client] = None
+
+    def storea(self, time, args, client):
+        t = self.cur_t.get(client, None)
+        if t is None:
+            self.skipped += 1
+            return
+        # append the oid and the length of the object
+        # parse the length as [NNN]
+        info = int(args[0]), int(args[1][1:-1])
+        t.objects.append(info)
+
+    def report(self, t):
+        """Print a report about the transaction"""
+        if t.objects:
+            bytes = reduce(operator.add, [size for oid, size in t.objects])
+        else:
+            bytes = 0
+        print "%s %2d %4d %10d %s" % (t.begin, t.finish - t.begin,
+                                      len(t.objects), bytes, 
+                                      time.ctime(t.begin)), t.url
+
+if __name__ == "__main__":
+    import fileinput
+
+    p = TransactionParser()
+    i = 0
+    for line in fileinput.input():
+        i += 1
+        try:
+            p.parse(line)
+        except:
+            print "line", i
+            raise
+    print len(p.transactions)