gsyncd: python3 compat fixes

Also add __codecheck script which can verify if source is OK at the
syntactical level with a given Python interpreter.

Change-Id: Ieff34bcd3efd1cdc0e8f9a510c05488f35897bbe
BUG: 1570
Reviewed-on: http://review.gluster.com/320
Reviewed-by: Kaushik BV <kaushikbv@gluster.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/xlators/features/marker/utils/syncdaemon/__codecheck.py b/xlators/features/marker/utils/syncdaemon/__codecheck.py
new file mode 100644
index 000000000..832e75c44
--- /dev/null
+++ b/xlators/features/marker/utils/syncdaemon/__codecheck.py
@@ -0,0 +1,27 @@
+import os
+import os.path
+import sys
+
+fl = os.listdir(os.path.dirname(sys.argv[0]) or '.')
+fl.sort()
+for f in fl:
+    if f[-3:] != '.py' or f[0] == '_':
+        continue
+    m = f[:-3]
+    sys.stdout.write('importing %s ...' %  m)
+    __import__(m)
+    print(' OK.')
+
+def sys_argv_set(a):
+    sys.argv = sys.argv[:1] + a
+
+gsyncd = sys.modules['gsyncd']
+for a in [['--help'], ['--version'], ['--canonicalize-escape-url', '/foo']]:
+    print('>>> invoking program with args: %s' % ' '.join(a))
+    pid = os.fork()
+    if not pid:
+        sys_argv_set(a)
+        gsyncd.main()
+    _, r = os.waitpid(pid, 0)
+    if r:
+        raise RuntimeError('invocation failed')