[PATCH v1 0/8] box: functional indexes

[Kirill Shcherbatov]

The patch set introduces persistent Lua functions and functional
indexes.

Lua functions managed by Tarantool are called 'persistent'.
They are stored in snapshoot and are available after server
restart.
Persistent Lua functions are exported in box.schema.func.persistent
folder. They may be called via .call exported object method or
via netbox:call.

Some restrictions must be accounted writing such routines:
1. only limited set of Lua functions and modules are available:
-assert -error -pairs -ipairs -next -pcall -xpcall -type
-print -select -string -tonumber -tostring -unpack -math -utf8;
2. global variables are forbidden.

Moreover all functions and their metadata are now exported in
box.func table (not only persistent). Persistent Lua functions
have box.func.FUNCNAME.call() method to execute it in interactive
console.
Persistent Lua functions are also available with net.box call.


A functional index use some registered persistent function as
key extractor.
You are not allowed to change functional index extractor function
while there are some functional indexes depends of it.

Branch: http://github.com/tarantool/tarantool/tree/kshch/gh-1260-functional-index-new
Issue: https://github.com/tarantool/tarantool/issues/1260

Kirill Shcherbatov (8):
  box: refactor box_lua_find helper
  box: rework func cache update machinery
  schema: rework _func system space format
  box: load persistent Lua functions on creation
  netbox: call persistent functions in netbox
  box: export _func functions with box.func folder
  box: introduce memtx_slab_alloc helper
  box: introduce functional indexes in memtx

 src/box/CMakeLists.txt            |   1 +
 src/box/alter.cc                  | 175 +++++++--
 src/box/bootstrap.snap            | Bin 4393 -> 4447 bytes
 src/box/call.c                    |   2 +-
 src/box/errcode.h                 |   1 +
 src/box/func.c                    | 203 +++++++++-
 src/box/func.h                    |  38 +-
 src/box/func_def.h                |  28 +-
 src/box/index_def.c               |  22 +-
 src/box/index_def.h               |  16 +
 src/box/key_def.c                 |  13 +-
 src/box/key_def.h                 |  31 +-
 src/box/lua/call.c                | 121 +++---
 src/box/lua/call.h                |   3 +-
 src/box/lua/init.c                |   2 +
 src/box/lua/key_def.c             |   2 +-
 src/box/lua/schema.lua            |  13 +-
 src/box/lua/space.cc              |   5 +
 src/box/lua/tuple_fextract_key.c  | 233 +++++++++++
 src/box/lua/tuple_fextract_key.h  | 100 +++++
 src/box/lua/upgrade.lua           |  22 +-
 src/box/memtx_engine.c            |  44 ++-
 src/box/memtx_engine.h            |  19 +
 src/box/memtx_space.c             |  18 +
 src/box/memtx_tree.c              | 355 ++++++++++++++++-
 src/box/schema.cc                 |  49 ++-
 src/box/schema.h                  |  31 +-
 src/box/schema_def.h              |   3 +
 src/box/sql.c                     |   2 +-
 src/box/sql/build.c               |   2 +-
 src/box/sql/select.c              |   2 +-
 src/box/sql/where.c               |   2 +-
 src/box/tuple_compare.cc          | 112 +++++-
 src/box/tuple_extract_key.cc      |  33 +-
 src/box/vinyl.c                   |   9 +-
 src/lua/utils.c                   | 126 ++++++
 src/lua/utils.h                   |  19 +
 test/box-py/bootstrap.result      |   6 +-
 test/box/access_misc.result       |   6 +-
 test/box/bitset.result            |  24 ++
 test/box/bitset.test.lua          |   9 +
 test/box/hash.result              |  24 ++
 test/box/hash.test.lua            |   9 +
 test/box/misc.result              |   2 +
 test/box/persistent_func.result   | 201 ++++++++++
 test/box/persistent_func.test.lua |  88 +++++
 test/box/rtree_misc.result        |  24 ++
 test/box/rtree_misc.test.lua      |   9 +
 test/engine/engine.cfg            |   5 +-
 test/engine/functional.result     | 620 ++++++++++++++++++++++++++++++
 test/engine/functional.test.lua   | 214 +++++++++++
 test/unit/luaT_tuple_new.c        |   2 +-
 test/unit/merger.test.c           |   4 +-
 53 files changed, 2898 insertions(+), 206 deletions(-)
 create mode 100644 src/box/lua/tuple_fextract_key.c
 create mode 100644 src/box/lua/tuple_fextract_key.h
 create mode 100644 test/box/persistent_func.result
 create mode 100644 test/box/persistent_func.test.lua
 create mode 100644 test/engine/functional.result
 create mode 100644 test/engine/functional.test.lua

-- 
2.21.0