[PATCH 6/8] box: introduce _promotion space

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

Promotion space keeps info about finished and going promotions.

Needed for #3055
---
 src/box/alter.cc                   |  11 +++++++++++
 src/box/alter.h                    |   1 +
 src/box/bootstrap.snap             | Bin 1540 -> 1635 bytes
 src/box/lua/space.cc               |   2 ++
 src/box/lua/upgrade.lua            |  19 +++++++++++++++++++
 src/box/schema.cc                  |  15 +++++++++++++++
 src/box/schema_def.h               |  14 ++++++++++++++
 test/app-tap/tarantoolctl.test.lua |   4 ++--
 test/box-py/bootstrap.result       |   8 +++++++-
 test/box/access_misc.result        |   4 ++++
 test/box/access_sysview.result     |   6 +++---
 test/box/alter.result              |   6 ++++--
 test/wal_off/alter.result          |   2 +-
 test/xlog/upgrade.result           |   8 +++++++-
 14 files changed, 90 insertions(+), 10 deletions(-)

diff --git a/src/box/alter.cc b/src/box/alter.cc
index d13ecb783..7a7325038 100644
--- a/src/box/alter.cc
+++ b/src/box/alter.cc
@@ -2924,6 +2924,13 @@ on_replace_dd_cluster(struct trigger *trigger, void *event)
 	txn_on_commit(txn, on_commit);
 }
 
+static void
+on_replace_dd_promotion(struct trigger *trigger, void *event)
+{
+	(void) trigger;
+	(void) event;
+}
+
 /* }}} cluster configuration */
 
 /* {{{ sequence */
@@ -3240,6 +3247,10 @@ struct trigger alter_space_on_replace_index = {
 	RLIST_LINK_INITIALIZER, on_replace_dd_index, NULL, NULL
 };
 
+struct trigger alter_space_on_replace_promotion = {
+	RLIST_LINK_INITIALIZER, on_replace_dd_promotion, NULL, NULL
+};
+
 struct trigger on_replace_truncate = {
 	RLIST_LINK_INITIALIZER, on_replace_dd_truncate, NULL, NULL
 };
diff --git a/src/box/alter.h b/src/box/alter.h
index fb5f65a68..c62ca3c95 100644
--- a/src/box/alter.h
+++ b/src/box/alter.h
@@ -34,6 +34,7 @@
 
 extern struct trigger alter_space_on_replace_space;
 extern struct trigger alter_space_on_replace_index;
+extern struct trigger alter_space_on_replace_promotion;
 extern struct trigger on_replace_truncate;
 extern struct trigger on_replace_schema;
 extern struct trigger on_replace_user;
diff --git a/src/box/bootstrap.snap b/src/box/bootstrap.snap
index b610828c9c9ae9a22acdd8c150c16c6838b7a273..ece20feaa47441dcf4b56fe90d91dfcf29e30341 100644
GIT binary patch
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diff --git a/src/box/lua/space.cc b/src/box/lua/space.cc
index 580e0ea2c..c1a1efb7d 100644
--- a/src/box/lua/space.cc
+++ b/src/box/lua/space.cc
@@ -554,6 +554,8 @@ box_lua_space_init(struct lua_State *L)
 	lua_setfield(L, -2, "VSEQUENCE_ID");
 	lua_pushnumber(L, BOX_SPACE_SEQUENCE_ID);
 	lua_setfield(L, -2, "SPACE_SEQUENCE_ID");
+	lua_pushnumber(L, BOX_PROMOTION_ID);
+	lua_setfield(L, -2, "PROMOTION_ID");
 	lua_pushnumber(L, BOX_SYSTEM_ID_MIN);
 	lua_setfield(L, -2, "SYSTEM_ID_MIN");
 	lua_pushnumber(L, BOX_SYSTEM_ID_MAX);
diff --git a/src/box/lua/upgrade.lua b/src/box/lua/upgrade.lua
index 0293f6ef8..39ab0df7d 100644
--- a/src/box/lua/upgrade.lua
+++ b/src/box/lua/upgrade.lua
@@ -964,6 +964,24 @@ local function upgrade_to_1_10_0()
     create_vsequence_space()
 end
 
+local function upgrade_to_1_10_2()
+    log.info('create space _promotion')
+    local format = {
+        {name = 'id', type = 'unsigned'},
+        {name = 'round_uuid', type = 'string'},
+        {name = 'step', type = 'unsigned'},
+        {name = 'source_uuid', type = 'string'},
+        {name = 'ts', type = 'number'},
+        {name = 'type', type = 'string'},
+        {name = 'value', type = 'map', is_nullable = true}
+    }
+    box.space._space:insert({box.space._promotion.id, ADMIN, '_promotion',
+                             'memtx', 0, setmap({}), format})
+    log.info('create index primary on _promotion')
+    box.space._index:insert({box.space._promotion.id, 0, 'primary', 'tree',
+                             {unique = true}, {{0, 'unsigned'}, {1, 'string'},
+                             {2, 'unsigned'}, {3, 'string'}}})
+end
 
 local function get_version()
     local version = box.space._schema:get{'version'}
@@ -991,6 +1009,7 @@ local function upgrade(options)
         {version = mkversion(1, 7, 6), func = upgrade_to_1_7_6, auto = false},
         {version = mkversion(1, 7, 7), func = upgrade_to_1_7_7, auto = true},
         {version = mkversion(1, 10, 0), func = upgrade_to_1_10_0, auto = true},
+        {version = mkversion(1, 10, 2), func = upgrade_to_1_10_2, auto = true},
     }
 
     for _, handler in ipairs(handlers) do
diff --git a/src/box/schema.cc b/src/box/schema.cc
index 433f52c08..adacb2569 100644
--- a/src/box/schema.cc
+++ b/src/box/schema.cc
@@ -338,8 +338,23 @@ schema_init()
 	 */
 	sc_space_new(BOX_CLUSTER_ID, "_cluster", key_def, &on_replace_cluster,
 		     NULL);
+	key_def_delete(key_def);
 
+	key_def = key_def_new(4);
+	if (key_def == NULL)
+		diag_raise();
+	key_def_set_part(key_def, 0, 0, FIELD_TYPE_UNSIGNED, false, NULL,
+			 COLL_NONE);
+	key_def_set_part(key_def, 1, 1, FIELD_TYPE_STRING, false, NULL,
+			 COLL_NONE);
+	key_def_set_part(key_def, 2, 2, FIELD_TYPE_UNSIGNED, false, NULL,
+			 COLL_NONE);
+	key_def_set_part(key_def, 3, 3, FIELD_TYPE_STRING, false, NULL,
+			 COLL_NONE);
+	sc_space_new(BOX_PROMOTION_ID, "_promotion", key_def,
+		     &alter_space_on_replace_promotion, NULL);
 	key_def_delete(key_def);
+
 	key_def = key_def_new(2); /* part count */
 	if (key_def == NULL)
 		diag_raise();
diff --git a/src/box/schema_def.h b/src/box/schema_def.h
index 2edb8d37f..079afd45a 100644
--- a/src/box/schema_def.h
+++ b/src/box/schema_def.h
@@ -102,6 +102,8 @@ enum {
 	BOX_TRUNCATE_ID = 330,
 	/** Space id of _space_sequence. */
 	BOX_SPACE_SEQUENCE_ID = 340,
+	/** Space id of _promotion. */
+	BOX_PROMOTION_ID = 348,
 	/** End of the reserved range of system spaces. */
 	BOX_SYSTEM_ID_MAX = 511,
 	BOX_ID_NIL = 2147483647
@@ -212,6 +214,18 @@ enum {
 	BOX_SPACE_SEQUENCE_FIELD_IS_GENERATED = 2,
 };
 
+/** _promotion fields. */
+enum {
+	BOX_PROMOTION_FIELD_ID = 0,
+	BOX_PROMOTION_FIELD_ROUND_UUID = 1,
+	BOX_PROMOTION_FIELD_PHASE = 2,
+	BOX_PROMOTION_FIELD_SOURCE_UUID = 3,
+	BOX_PROMOTION_FIELD_STEP = 4,
+	BOX_PROMOTION_FIELD_TS = 5,
+	BOX_PROMOTION_FIELD_TYPE = 6,
+	BOX_PROMOTION_FIELD_VALUE = 7,
+};
+
 /*
  * Different objects which can be subject to access
  * control.
diff --git a/test/app-tap/tarantoolctl.test.lua b/test/app-tap/tarantoolctl.test.lua
index 6946c8312..599519543 100755
--- a/test/app-tap/tarantoolctl.test.lua
+++ b/test/app-tap/tarantoolctl.test.lua
@@ -338,8 +338,8 @@ do
             check_ctlcat_xlog(test_i, dir, "--from=3 --to=6 --format=json --show-system --replica 1", "\n", 3)
             check_ctlcat_xlog(test_i, dir, "--from=3 --to=6 --format=json --show-system --replica 1 --replica 2", "\n", 3)
             check_ctlcat_xlog(test_i, dir, "--from=3 --to=6 --format=json --show-system --replica 2", "\n", 0)
-            check_ctlcat_snap(test_i, dir, "--space=280", "---\n", 18)
-            check_ctlcat_snap(test_i, dir, "--space=288", "---\n", 43)
+            check_ctlcat_snap(test_i, dir, "--space=280", "---\n", 19)
+            check_ctlcat_snap(test_i, dir, "--space=288", "---\n", 44)
         end)
     end)
 
diff --git a/test/box-py/bootstrap.result b/test/box-py/bootstrap.result
index 16c2027cf..a78c23945 100644
--- a/test/box-py/bootstrap.result
+++ b/test/box-py/bootstrap.result
@@ -5,7 +5,7 @@ box.space._schema:select{}
 ---
 - - ['cluster', '<cluster uuid>']
   - ['max_id', 511]
-  - ['version', 1, 10, 0]
+  - ['version', 1, 10, 2]
 ...
 box.space._cluster:select{}
 ---
@@ -68,6 +68,10 @@ box.space._space:select{}
         'type': 'unsigned'}]]
   - [340, 1, '_space_sequence', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'},
       {'name': 'sequence_id', 'type': 'unsigned'}, {'name': 'is_generated', 'type': 'boolean'}]]
+  - [348, 1, '_promotion', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'}, {
+        'name': 'round_uuid', 'type': 'string'}, {'name': 'step', 'type': 'unsigned'},
+      {'name': 'source_uuid', 'type': 'string'}, {'name': 'ts', 'type': 'number'},
+      {'name': 'type', 'type': 'string'}, {'type': 'map', 'name': 'value', 'is_nullable': true}]]
 ...
 box.space._index:select{}
 ---
@@ -116,6 +120,8 @@ box.space._index:select{}
   - [330, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 1, 'sequence', 'tree', {'unique': false}, [[1, 'unsigned']]]
+  - [348, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned'], [1, 'string'],
+      [2, 'unsigned'], [3, 'string']]]
 ...
 box.space._user:select{}
 ---
diff --git a/test/box/access_misc.result b/test/box/access_misc.result
index 2d87fa2d5..40b8a8118 100644
--- a/test/box/access_misc.result
+++ b/test/box/access_misc.result
@@ -807,6 +807,10 @@ box.space._space:select()
         'type': 'unsigned'}]]
   - [340, 1, '_space_sequence', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'},
       {'name': 'sequence_id', 'type': 'unsigned'}, {'name': 'is_generated', 'type': 'boolean'}]]
+  - [348, 1, '_promotion', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'}, {
+        'name': 'round_uuid', 'type': 'string'}, {'name': 'step', 'type': 'unsigned'},
+      {'name': 'source_uuid', 'type': 'string'}, {'name': 'ts', 'type': 'number'},
+      {'name': 'type', 'type': 'string'}, {'type': 'map', 'name': 'value', 'is_nullable': true}]]
 ...
 box.space._func:select()
 ---
diff --git a/test/box/access_sysview.result b/test/box/access_sysview.result
index 20efd2bbc..8a0079407 100644
--- a/test/box/access_sysview.result
+++ b/test/box/access_sysview.result
@@ -230,11 +230,11 @@ box.session.su('guest')
 ...
 #box.space._vspace:select{}
 ---
-- 19
+- 20
 ...
 #box.space._vindex:select{}
 ---
-- 44
+- 45
 ...
 #box.space._vuser:select{}
 ---
@@ -262,7 +262,7 @@ box.session.su('guest')
 ...
 #box.space._vindex:select{}
 ---
-- 44
+- 45
 ...
 #box.space._vuser:select{}
 ---
diff --git a/test/box/alter.result b/test/box/alter.result
index eb7014d8b..72f451938 100644
--- a/test/box/alter.result
+++ b/test/box/alter.result
@@ -107,7 +107,7 @@ space = box.space[t[1]]
 ...
 space.id
 ---
-- 341
+- 349
 ...
 space.field_count
 ---
@@ -152,7 +152,7 @@ space_deleted
 ...
 space:replace{0}
 ---
-- error: Space '341' does not exist
+- error: Space '349' does not exist
 ...
 _index:insert{_space.id, 0, 'primary', 'tree', 1, 1, 0, 'unsigned'}
 ---
@@ -226,6 +226,8 @@ _index:select{}
   - [330, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 1, 'sequence', 'tree', {'unique': false}, [[1, 'unsigned']]]
+  - [348, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned'], [1, 'string'],
+      [2, 'unsigned'], [3, 'string']]]
 ...
 -- modify indexes of a system space
 _index:delete{_index.id, 0}
diff --git a/test/wal_off/alter.result b/test/wal_off/alter.result
index afac1e55d..76fae0511 100644
--- a/test/wal_off/alter.result
+++ b/test/wal_off/alter.result
@@ -28,7 +28,7 @@ end;
 ...
 #spaces;
 ---
-- 65515
+- 65514
 ...
 -- cleanup
 for k, v in pairs(spaces) do
diff --git a/test/xlog/upgrade.result b/test/xlog/upgrade.result
index f02996bba..f9409c7dc 100644
--- a/test/xlog/upgrade.result
+++ b/test/xlog/upgrade.result
@@ -36,7 +36,7 @@ box.space._schema:select()
 ---
 - - ['cluster', '<server_uuid>']
   - ['max_id', 513]
-  - ['version', 1, 10, 0]
+  - ['version', 1, 10, 2]
 ...
 box.space._space:select()
 ---
@@ -95,6 +95,10 @@ box.space._space:select()
         'type': 'unsigned'}]]
   - [340, 1, '_space_sequence', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'},
       {'name': 'sequence_id', 'type': 'unsigned'}, {'name': 'is_generated', 'type': 'boolean'}]]
+  - [348, 1, '_promotion', 'memtx', 0, {}, [{'name': 'id', 'type': 'unsigned'}, {
+        'name': 'round_uuid', 'type': 'string'}, {'name': 'step', 'type': 'unsigned'},
+      {'name': 'source_uuid', 'type': 'string'}, {'name': 'ts', 'type': 'number'},
+      {'name': 'type', 'type': 'string'}, {'type': 'map', 'name': 'value', 'is_nullable': true}]]
   - [512, 1, 'distro', 'memtx', 0, {}, [{'name': 'os', 'type': 'str'}, {'name': 'dist',
         'type': 'str'}, {'name': 'version', 'type': 'num'}, {'name': 'time', 'type': 'num'}]]
   - [513, 1, 'temporary', 'memtx', 0, {'temporary': true}, []]
@@ -146,6 +150,8 @@ box.space._index:select()
   - [330, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned']]]
   - [340, 1, 'sequence', 'tree', {'unique': false}, [[1, 'unsigned']]]
+  - [348, 0, 'primary', 'tree', {'unique': true}, [[0, 'unsigned'], [1, 'string'],
+      [2, 'unsigned'], [3, 'string']]]
   - [512, 0, 'primary', 'hash', {'unique': true}, [[0, 'string'], [1, 'string'], [
         2, 'unsigned']]]
   - [512, 1, 'codename', 'hash', {'unique': true}, [[1, 'string']]]
-- 
2.15.2 (Apple Git-101.1)