crud: require tuple-keydef and tuple-merger

This patch removes compatibility code that emulated `tuple-keydef` and
`tuple-merger` support when they were missing. Now it is required
to have this modules either internally r externally.

Closes #365

Author: DifferentialOrange

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 * Drop support of Tarantool 1.10.x older than 1.10.8 and
   Tarantool 2.x older than 2.5.2 (#365).
 * Unlock `tuple-keydef` and `tuple-merger` version dependencies (#365).
+* Require `tuple-keydef` and `tuple-merger` for work (#365).
 
 ## [1.4.0] - 16-10-23
 

crud/common/stash.lua

@@ -20,16 +20,12 @@ local stash = {}
 -- @tfield string stats_metrics_registry
 --  Stash for metrics rocks statistics registry.
 --
--- @tfield string select_module_compat_info
---  Stash for select compatability version registry.
---
 stash.name = {
     cfg = '__crud_cfg',
     stats_internal = '__crud_stats_internal',
     stats_local_registry = '__crud_stats_local_registry',
     stats_metrics_registry = '__crud_stats_metrics_registry',
     ddl_triggers = '__crud_ddl_spaces_triggers',
-    select_module_compat_info = '__select_module_compat_info',
     storage_readview = '__crud_storage_readview',
 }
 

crud/readview.lua

@@ -15,23 +15,20 @@ local stats = require('crud.stats')
 
 local ReadviewError = errors.new_class('ReadviewError', {capture_stack = false})
 
-local has_merger = (utils.tarantool_supports_external_merger() and
-    package.search('tuple.merger')) or utils.tarantool_has_builtin_merger()
-
 local OPEN_FUNC_NAME = 'readview_open_on_storage'
 local CRUD_OPEN_FUNC_NAME = utils.get_storage_call(OPEN_FUNC_NAME)
 local SELECT_FUNC_NAME = 'select_readview_on_storage'
 local CLOSE_FUNC_NAME = 'readview_close_on_storage'
 local CRUD_CLOSE_FUNC_NAME = utils.get_storage_call(CLOSE_FUNC_NAME)
 
 if (not utils.tarantool_version_at_least(2, 11, 0))
-or (tarantool.package ~= 'Tarantool Enterprise') or (not has_merger) then
+or (tarantool.package ~= 'Tarantool Enterprise') then
     return {
         new = function() return nil,
         ReadviewError:new("Tarantool does not support readview") end,
         init = function() return nil end}
 end
-local select = require('crud.select.compat.select')
+local select = require('crud.select.module')
 
 local readview = {}
 
@@ -188,13 +185,6 @@ local function select_readview_on_storage(space_name, index_id, conditions, opts
 
     local result = {cursor, filtered_tuples}
 
-    local select_module_compat_info = stash.get(stash.name.select_module_compat_info)
-    if not select_module_compat_info.has_merger then
-        if opts.fetch_latest_metadata then
-            result[3] = cursor.storage_info.replica_schema_version
-        end
-    end
-
     return unpack(result)
 end
 

crud/select.lua

@@ -1,6 +1,5 @@
 local errors = require('errors')
 
-local stash = require('crud.common.stash')
 local utils = require('crud.common.utils')
 local sharding = require('crud.common.sharding')
 local select_executor = require('crud.select.executor')
@@ -10,20 +9,9 @@ local schema = require('crud.common.schema')
 
 local SelectError = errors.new_class('SelectError')
 
-local select_module
-
 local SELECT_FUNC_NAME = 'select_on_storage'
 
-local select_module_compat_info = stash.get(stash.name.select_module_compat_info)
-local has_merger = (utils.tarantool_supports_external_merger() and
-    package.search('tuple.merger')) or utils.tarantool_has_builtin_merger()
-if has_merger then
-    select_module = require('crud.select.compat.select')
-    select_module_compat_info.has_merger = true
-else
-    select_module = require('crud.select.compat.select_old')
-    select_module_compat_info.has_merger = false
-end
+local select_module = require('crud.select.module')
 
 function checkers.vshard_call_mode(p)
     return p == 'write' or p == 'read'
@@ -114,14 +102,6 @@ local function select_on_storage(space_name, index_id, conditions, opts)
     local filtered_tuples = schema.filter_tuples_fields(resp.tuples, opts.field_names)
 
     local result = {cursor, filtered_tuples}
-
-    local select_module_compat_info = stash.get(stash.name.select_module_compat_info)
-    if not select_module_compat_info.has_merger then
-        if opts.fetch_latest_metadata then
-            result[3] = cursor.storage_info.replica_schema_version
-        end
-    end
-
     return unpack(result)
 end