Scripts to pretty print ovs flows and odl logs

[netvirt.git] / resources / commons / pplog.py

diff --git a/resources/commons/pplog.py b/resources/commons/pplog.py
new file mode 100755 (executable)
index 0000000..8cc4e3d
--- /dev/null
+++ b/resources/commons/pplog.py
@@ -0,0 +1,69 @@
+#!/usr/bin/python
+
+import string
+from sys import stdout,stdin,argv,exit
+
+if len(argv) > 1 and argv[1] in ['-h', '-?', '--h', '--help']:
+    print 'pplog.py pretty prints Open Daylight log lines, useful for lines containing large nested objects'
+    print 'Usage: Simply pipe the lines you are interested through this script'
+    exit(0)
+
+line_num = 0
+def nl():
+    global line_num
+    line_num += 1
+    stdout.write('\n' + i)
+
+for l in stdin:
+    if '|' not in l: continue
+
+    (t, level, component, cat, art, msg) = string.split(l, '|', maxsplit=5)
+
+    I = '  '
+    opener = '[{<'
+    closer = ']}>'
+    i = ''
+
+    in_ws = 1
+    is_empty_list = 0
+    last_char = ''
+    title = ''
+    title_stack = []
+
+    for c in msg:
+        if in_ws and c in ' \t': continue
+        in_ws = 0
+
+        if c in closer:
+            i = i[:-2]
+            if not is_empty_list and last_char not in closer: nl()
+            in_ws = 1
+            is_empty_list = 0
+            title = ''
+        elif is_empty_list:
+            is_empty_list = 0
+            nl()
+
+        if last_char in closer and c != ',': nl()
+
+        stdout.write(c)
+        if not c in opener: title += c
+        last_char = c
+
+        if c in closer:
+            if len(title_stack):
+                (t,ln) = title_stack.pop()
+                if (line_num - ln) > 5: stdout.write(' /* ' + t.strip() + ' */')
+
+        if c in opener:
+            i += I
+            in_ws = 1
+            is_empty_list = 1
+            if title:
+                title_stack.append((title, line_num))
+                title = ''
+
+        if c == ',':
+            nl()
+            in_ws = 1
+            title = ''