Replace sharding methods in new directory sharding

Since this patch presents the implementation of support of
DDL sharding function, the number of files associated with
sharding will increase in the `common` folder. Therefore,
a separate directory was created for files containing
methods for working with sharding.

Part of #237

Author: AnaNek

crud.lua

@@ -12,7 +12,7 @@ local select = require('crud.select')
 local truncate = require('crud.truncate')
 local len = require('crud.len')
 local borders = require('crud.borders')
-local sharding_key = require('crud.common.sharding_key')
+local sharding_key = require('crud.common.sharding.sharding_key')
 local utils = require('crud.common.utils')
 
 local crud = {}

crud/common/sharding.lua renamed to crud/common/sharding/init.lua

@@ -4,7 +4,7 @@ local errors = require('errors')
 local BucketIDError = errors.new_class("BucketIDError", {capture_stack = false})
 
 local utils = require('crud.common.utils')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 
 local sharding = {}
 

crud/common/sharding_key.lua renamed to crud/common/sharding/sharding_key.lua

@@ -4,7 +4,7 @@ local errors = require('errors')
 local call = require('crud.common.call')
 local const = require('crud.common.const')
 local dev_checks = require('crud.common.dev_checks')
-local cache = require('crud.common.sharding_key_cache')
+local cache = require('crud.common.sharding.sharding_key_cache')
 local utils = require('crud.common.utils')
 
 local ShardingKeyError = errors.new_class("ShardingKeyError", {capture_stack = false})

crud/common/sharding_key_cache.lua renamed to crud/common/sharding/sharding_key_cache.lua

@@ -5,7 +5,7 @@ local vshard = require('vshard')
 local call = require('crud.common.call')
 local utils = require('crud.common.utils')
 local sharding = require('crud.common.sharding')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 local dev_checks = require('crud.common.dev_checks')
 local schema = require('crud.common.schema')
 

crud/delete.lua

@@ -5,7 +5,7 @@ local vshard = require('vshard')
 local call = require('crud.common.call')
 local utils = require('crud.common.utils')
 local sharding = require('crud.common.sharding')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 local dev_checks = require('crud.common.dev_checks')
 local schema = require('crud.common.schema')
 

crud/get.lua

@@ -7,7 +7,7 @@ local sharding = require('crud.common.sharding')
 local dev_checks = require('crud.common.dev_checks')
 local common = require('crud.select.compat.common')
 local schema = require('crud.common.schema')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 
 local compare_conditions = require('crud.compare.conditions')
 local select_plan = require('crud.select.plan')

crud/select/compat/select.lua

@@ -8,7 +8,7 @@ local utils = require('crud.common.utils')
 local sharding = require('crud.common.sharding')
 local dev_checks = require('crud.common.dev_checks')
 local schema = require('crud.common.schema')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 
 local compare_conditions = require('crud.compare.conditions')
 local select_plan = require('crud.select.plan')

crud/select/compat/select_old.lua

@@ -5,7 +5,7 @@ local vshard = require('vshard')
 local call = require('crud.common.call')
 local utils = require('crud.common.utils')
 local sharding = require('crud.common.sharding')
-local sharding_key_module = require('crud.common.sharding_key')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
 local dev_checks = require('crud.common.dev_checks')
 local schema = require('crud.common.schema')
 

crud/update.lua

@@ -325,7 +325,7 @@ end
 
 function helpers.update_cache(cluster, space_name)
     return cluster.main_server.net_box:eval([[
-        local sharding_key = require('crud.common.sharding_key')
+        local sharding_key = require('crud.common.sharding.sharding_key')
 
         local space_name = ...
         return sharding_key.update_cache(space_name)

test/helper.lua

@@ -1,6 +1,6 @@
 local t = require('luatest')
-local sharding_key_module = require('crud.common.sharding_key')
-local cache = require('crud.common.sharding_key_cache')
+local sharding_key_module = require('crud.common.sharding.sharding_key')
+local cache = require('crud.common.sharding.sharding_key_cache')
 local utils = require('crud.common.utils')
 
 local helpers = require('test.helper')