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-rw-r--r--xlators/features/changelog/lib/examples/c/get-changes.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/xlators/features/changelog/lib/examples/c/get-changes.c b/xlators/features/changelog/lib/examples/c/get-changes.c
new file mode 100644
index 00000000..14562585
--- /dev/null
+++ b/xlators/features/changelog/lib/examples/c/get-changes.c
@@ -0,0 +1,87 @@
+/*
+ Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+/**
+ * get set of new changes every 10 seconds (just print the file names)
+ *
+ * Compile it using:
+ * gcc -o getchanges `pkg-config --cflags libgfchangelog` get-changes.c \
+ * `pkg-config --libs libgfchangelog`
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/un.h>
+#include <limits.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <errno.h>
+
+#include "changelog.h"
+
+#define handle_error(fn) \
+ printf ("%s (reason: %s)\n", fn, strerror (errno))
+
+int
+main (int argc, char ** argv)
+{
+ int i = 0;
+ int ret = 0;
+ ssize_t nr_changes = 0;
+ ssize_t changes = 0;
+ char fbuf[PATH_MAX] = {0,};
+
+ /* get changes for brick "/home/vshankar/export/yow/yow-1" */
+ ret = gf_changelog_register ("/home/vshankar/export/yow/yow-1",
+ "/tmp/scratch", "/tmp/change.log", 9, 5);
+ if (ret) {
+ handle_error ("register failed");
+ goto out;
+ }
+
+ while (1) {
+ i = 0;
+ nr_changes = gf_changelog_scan ();
+ if (nr_changes < 0) {
+ handle_error ("scan(): ");
+ break;
+ }
+
+ if (nr_changes == 0)
+ goto next;
+
+ printf ("Got %ld changelog files\n", nr_changes);
+
+ while ( (changes =
+ gf_changelog_next_change (fbuf, PATH_MAX)) > 0) {
+ printf ("changelog file [%d]: %s\n", ++i, fbuf);
+
+ /* process changelog */
+ /* ... */
+ /* ... */
+ /* ... */
+ /* done processing */
+
+ ret = gf_changelog_done (fbuf);
+ if (ret)
+ handle_error ("gf_changelog_done");
+ }
+
+ if (changes == -1)
+ handle_error ("gf_changelog_next_change");
+
+ next:
+ sleep (10);
+ }
+
+ out:
+ return ret;
+}