cluster/afr: Make the self-heal algorithm pluggable.

Abstract the read/write loop part of data self-heal. This
patch has support for the "full" (i.e., read and write entire
file) algorithm.

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/xlators/cluster/afr/src/afr-self-heal-algorithm.h b/xlators/cluster/afr/src/afr-self-heal-algorithm.h
new file mode 100644
index 000000000..646fd2ee7
--- /dev/null
+++ b/xlators/cluster/afr/src/afr-self-heal-algorithm.h
@@ -0,0 +1,34 @@
+/*
+   Copyright (c) 2009 Z RESEARCH, Inc. <http://www.zresearch.com>
+   This file is part of GlusterFS.
+
+   GlusterFS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   GlusterFS is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __AFR_SELF_HEAL_ALGORITHM_H__
+#define __AFR_SELF_HEAL_ALGORITHM_H__
+
+
+typedef int (*afr_sh_algo_fn) (call_frame_t *frame,
+                               xlator_t *this);
+
+struct afr_sh_algorithm {
+        const char *name;
+        afr_sh_algo_fn fn;
+};
+
+struct afr_sh_algorithm afr_self_heal_algorithms[1];
+
+#endif /* __AFR_SELF_HEAL_ALGORITHM_H__ */