Leases: Add a server side xlator to handle lease requests

Before this patch, there was an effort to implement leases
in upcall xlator, these patches by Soumya and me can be
found @ http://review.gluster.org/#/c/10084/

Change-Id: I926728c7ec690727a8971039b240655882d02059
BUG: 1319992
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/11643
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
Reviewed-by: Rajesh Joseph <rjoseph@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/xlators/features/leases/src/leases-messages.h b/xlators/features/leases/src/leases-messages.h
new file mode 100644
index 00000000000..62df4395a59
--- /dev/null
+++ b/xlators/features/leases/src/leases-messages.h
@@ -0,0 +1,129 @@
+/*
+ Copyright (c) 2015-2016 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.
+ */
+
+#ifndef _LEASES_MESSAGES_H_
+#define _LEASES_MESSAGES_H_
+
+#include "glfs-message-id.h"
+
+/* NOTE: Rules for message additions
+ * 1) Each instance of a message is _better_ left with a unique message ID, even
+ * if the message format is the same. Reasoning is that, if the message
+ * format needs to change in one instance, the other instances are not
+ * impacted or the new change does not change the ID of the instance being
+ * modified.
+ * 2) Addition of a message,
+ * - Should increment the GLFS_NUM_MESSAGES
+ * - Append to the list of messages defined, towards the end
+ * - Retain macro naming as glfs_msg_X (for redability across developers)
+ * NOTE: Rules for message format modifications
+ * 3) Check across the code if the message ID macro in question is reused
+ * anywhere. If reused then then the modifications should ensure correctness
+ * everywhere, or needs a new message ID as (1) above was not adhered to. If
+ * not used anywhere, proceed with the required modification.
+ * NOTE: Rules for message deletion
+ * 4) Check (3) and if used anywhere else, then cannot be deleted. If not used
+ * anywhere, then can be deleted, but will leave a hole by design, as
+ * addition rules specify modification to the end of the list and not filling
+ * holes.
+ */
+
+#define LEASES_COMP_BASE        GLFS_MSGID_COMP_LEASES
+#define GLFS_NUM_MESSAGES       11
+#define GLFS_MSGID_END          (LEASES_COMP_BASE + GLFS_NUM_MESSAGES + 1)
+
+#define glfs_msg_start_x LEASES_COMP_BASE, "Invalid: Start of messages"
+/*------------*/
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_NO_MEM                        (LEASES_COMP_BASE + 1)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_RECALL_FAIL                   (LEASES_COMP_BASE + 2)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INVAL_LEASE_ID                (LEASES_COMP_BASE + 3)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INVAL_UNLK_LEASE              (LEASES_COMP_BASE + 4)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INVAL_INODE_CTX               (LEASES_COMP_BASE + 5)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_NOT_ENABLED                   (LEASES_COMP_BASE + 6)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_NO_TIMER_WHEEL                (LEASES_COMP_BASE + 7)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_CLNT_NOTFOUND                 (LEASES_COMP_BASE + 8)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INODE_NOTFOUND                (LEASES_COMP_BASE + 9)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INVAL_FD_CTX                  (LEASES_COMP_BASE + 10)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define LEASE_MSG_INVAL_LEASE_TYPE              (LEASES_COMP_BASE + 11)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ */
+#define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages"
+
+#endif /* !_LEASES_MESSAGES_H_ */