Changeset c914e1d in rtems-source-builder for source-builder/sb/log.py

Timestamp:

05/01/13 00:08:36 (10 years ago)

Author:

Chris Johns <chrisj@…>

Branches:

4.10, 4.11, 4.9, 5, master

Children:

df56f7e

Parents:

3c69de0

Message:

Add tail support to the log. Email the log tail in a failure.

File:

• source-builder/sb/log.py (modified) (6 diffs)

source-builder/sb/log.py

@@ -89 +89 @@
 class log:
     """Log output to stdout or a file."""
-    def __init__(self, streams = None):
+    def __init__(self, streams = None, tail_size = 100):
+        self.tail = []
+        self.tail_size = tail_size
         self.fhs = [None, None]
         if streams:
@@ -108 +110 @@
             self.fhs[f].close()
 
+    def __str__(self):
+        t = ''
+        for tl in self.tail:
+            t += tl + os.linesep
+        return t[:-len(os.linesep)]
+
+    def _tail(self, text):
+        if type(text) is not list:
+            text = text.splitlines()
+        self.tail += text
+        if len(self.tail) > self.tail_size:
+            self.tail = self.tail[-self.tail_size:]
+
     def has_stdout(self):
         return self.fhs[0] is not None
@@ -117 +132 @@
         """Output the text message to all the logs."""
         # Reformat the text to have local line types.
+        text = text.replace(chr(13), '').splitlines()
+        self._tail(text)
         out = ''
-        for l in text.replace(chr(13), '').splitlines():
+        for l in text:
             out += l + os.linesep
         for f in range(0, len(self.fhs)):
@@ -132 +149 @@
 
 if __name__ == "__main__":
-    l = log(['stdout', 'log.txt'])
+    l = log(['stdout', 'log.txt'], tail_size = 20)
     for i in range(0, 10):
         l.output('log: hello world: %d\n' % (i))
@@ -138 +155 @@
     l.output('log: hello world NONE')
     l.flush()
+    print '=-' * 40
+    print 'tail: %d' % (len(l.tail))
+    print l
+    print '=-' * 40
+    for i in range(0, 10):
+        l.output('log: hello world 2: %d\n' % (i))
+    l.flush()
+    print '=-' * 40
+    print 'tail: %d' % (len(l.tail))
+    print l
+    print '=-' * 40
     for i in [0, 1]:
         quiet = False
@@ -160 +188 @@
         notice('notice with quiet on and trace on')
         default = l
+    print '=-' * 40
+    print 'tail: %d' % (len(l.tail))
+    print l
+    print '=-' * 40
     del l