Example of using libglfs from Python.

Change-Id: I081582c457428d55db8ec1ed6d90f1e439f51f0d
BUG: 839950
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.com/3675
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/api/examples/gfapi.py b/api/examples/gfapi.py
new file mode 100644
index 000000000..e71a9866e
--- /dev/null
+++ b/api/examples/gfapi.py
@@ -0,0 +1,29 @@
+import ctypes
+import os
+import sys
+
+# Looks like ctypes is having trouble with dependencies, so just force them to
+# load with RTLD_GLOBAL until I figure that out.
+glfs = ctypes.CDLL("libglusterfs.so",ctypes.RTLD_GLOBAL)
+xdr = ctypes.CDLL("libgfxdr.so",ctypes.RTLD_GLOBAL)
+api = ctypes.CDLL("api/libgfapi.so",ctypes.RTLD_GLOBAL)
+
+fs = api.glfs_new(sys.argv[1])
+api.glfs_set_logging(fs,"/dev/stderr",7)
+api.glfs_set_volfile_server(fs,"socket","localhost",24007)
+api.glfs_init(fs)
+print "Initialized volume"
+
+fd = api.glfs_creat(fs,sys.argv[2],os.O_RDWR,0644)
+print "Created file"
+
+# Read anything that's there from before.
+rbuf = ctypes.create_string_buffer(32)
+if api.glfs_read(fd,rbuf,32,0) > 0:
+	print "old data = %s" % rbuf.value
+
+# Write some new data.
+api.glfs_lseek(fd,0,os.SEEK_SET)
+wrote = api.glfs_write(fd,sys.argv[3],len(sys.argv[3]),0)
+if wrote > 0:
+	print "wrote %d bytes" % wrote