From ed6a63d56924103d7363d4e1085db8057fa7cac2 Mon Sep 17 00:00:00 2001
From: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Date: Fri, 21 Sep 2018 08:33:32 +0900
Subject: [PATCH] bdev/raid: Add JSON config dump

Change-Id: I5b2832aad585145e021e26ac288da91ece2153a9
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/426289
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 lib/bdev/raid/bdev_raid.c                     | 49 +++++++++++++++++--
 test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c | 12 +++++
 2 files changed, 56 insertions(+), 5 deletions(-)

diff --git a/lib/bdev/raid/bdev_raid.c b/lib/bdev/raid/bdev_raid.c
index 77b7b7d1c..ce7a97db9 100644
--- a/lib/bdev/raid/bdev_raid.c
+++ b/lib/bdev/raid/bdev_raid.c
@@ -696,13 +696,52 @@ raid_bdev_dump_info_json(void *ctx, struct spdk_json_write_ctx *w)
 	return 0;
 }
 
+/*
+ * brief:
+ * raid_bdev_write_config_json is the function table pointer for raid bdev
+ * params:
+ * bdev - pointer to spdk_bdev
+ * w - pointer to json context
+ * returns:
+ * none
+ */
+static void
+raid_bdev_write_config_json(struct spdk_bdev *bdev, struct spdk_json_write_ctx *w)
+{
+	struct raid_bdev *raid_bdev = bdev->ctxt;
+	struct spdk_bdev *base;
+	uint16_t i;
+
+	spdk_json_write_object_begin(w);
+
+	spdk_json_write_named_string(w, "method", "construct_raid_bdev");
+
+	spdk_json_write_named_object_begin(w, "params");
+	spdk_json_write_named_string(w, "name", bdev->name);
+	spdk_json_write_named_uint32(w, "strip_size", raid_bdev->strip_size);
+	spdk_json_write_named_uint32(w, "raid_level", raid_bdev->raid_level);
+
+	spdk_json_write_named_array_begin(w, "base_bdevs");
+	for (i = 0; i < raid_bdev->num_base_bdevs; i++) {
+		base = raid_bdev->base_bdev_info[i].bdev;
+		if (base) {
+			spdk_json_write_string(w, base->name);
+		}
+	}
+	spdk_json_write_array_end(w);
+	spdk_json_write_object_end(w);
+
+	spdk_json_write_object_end(w);
+}
+
 /* g_raid_bdev_fn_table is the function table for raid bdev */
 static const struct spdk_bdev_fn_table g_raid_bdev_fn_table = {
-	.destruct           = raid_bdev_destruct,
-	.submit_request     = raid_bdev_submit_request,
-	.io_type_supported  = raid_bdev_io_type_supported,
-	.get_io_channel     = raid_bdev_get_io_channel,
-	.dump_info_json     = raid_bdev_dump_info_json,
+	.destruct		= raid_bdev_destruct,
+	.submit_request		= raid_bdev_submit_request,
+	.io_type_supported	= raid_bdev_io_type_supported,
+	.get_io_channel		= raid_bdev_get_io_channel,
+	.dump_info_json		= raid_bdev_dump_info_json,
+	.write_config_json	= raid_bdev_write_config_json,
 };
 
 /*
diff --git a/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c b/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
index 60c5c3abe..ffa466da1 100644
--- a/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
+++ b/test/unit/lib/bdev/bdev_raid.c/bdev_raid_ut.c
@@ -339,6 +339,18 @@ spdk_json_write_object_begin(struct spdk_json_write_ctx *w)
 	return 0;
 }
 
+int
+spdk_json_write_named_object_begin(struct spdk_json_write_ctx *w, const char *name)
+{
+	return 0;
+}
+
+int
+spdk_json_write_named_array_begin(struct spdk_json_write_ctx *w, const char *name)
+{
+	return 0;
+}
+
 int
 spdk_json_write_array_end(struct spdk_json_write_ctx *w)
 {