[Tarantool-patches] [PATCH v3 00/20] sql: prepared statements

[Nikita Pettik]

Branch: https://github.com/tarantool/tarantool/tree/np/gh-2592-prepared-statements-v3
Issue: https://github.com/tarantool/tarantool/issues/2592

V1: https://lists.tarantool.org/pipermail/tarantool-patches/2019-November/012274.html
V2: https://lists.tarantool.org/pipermail/tarantool-patches/2019-November/012496.html

Changes in V3 (requested by server team):

 - Now there's no eviction policy, so statements reside in 'cache'
   until explicit deallocation via 'unprepare' call or session's
   disconect;
 - instead of string ids, now we use numeric ids which correspond
   to value of hash function applied to the string containing original
   SQL request;
 - in accordance with previous point, 'unprepare' support has been returned;
 - since there's no eviction policy, disconnect event may turn out to
   be expensive (in terms of deallocating all related to the session
   prepared statements). To remove possible spikes in workload, we
   maintain GC queue and reference counters for prepared statements.
   When all sessions (previously refed statement) unref it, statement
   gets into GC queue. In case of prepared statements holder is out
   of memory, GC process is launched: all statements in queue are
   deallocated;
 - to track available in scope of session prepared statements, we
   also maintain session-local map containing statement's IDs
   allocated in this session.

Nikita Pettik (20):
  sql: remove sql_prepare_v2()
  sql: refactor sql_prepare() and sqlPrepare()
  sql: move sql_prepare() declaration to box/execute.h
  sql: rename sqlPrepare() to sql_stmt_compile()
  sql: rename sql_finalize() to sql_stmt_finalize()
  sql: rename sql_reset() to sql_stmt_reset()
  sql: move sql_stmt_finalize() to execute.h
  port: increase padding of struct port
  port: add result set format and request type to port_sql
  sql: resurrect sql_bind_parameter_count() function
  sql: resurrect sql_bind_parameter_name()
  sql: add sql_stmt_schema_version()
  sql: introduce sql_stmt_sizeof() function
  box: increment schema_version on ddl operations
  sql: introduce sql_stmt_query_str() method
  sql: move sql_stmt_busy() declaration to box/execute.h
  sql: introduce holder for prepared statemets
  box: introduce prepared statements
  netbox: introduce prepared statements
  sql: add cache statistics to box.info

 src/box/CMakeLists.txt          |   1 +
 src/box/alter.cc                |   3 +
 src/box/bind.c                  |   2 +-
 src/box/box.cc                  |  26 ++
 src/box/box.h                   |   3 +
 src/box/ck_constraint.c         |   7 +-
 src/box/errcode.h               |   2 +
 src/box/execute.c               | 234 ++++++++++++-
 src/box/execute.h               |  60 ++++
 src/box/iproto.cc               |  68 +++-
 src/box/iproto_constants.c      |   7 +-
 src/box/iproto_constants.h      |   5 +
 src/box/lua/cfg.cc              |   9 +
 src/box/lua/execute.c           | 235 ++++++++++++-
 src/box/lua/execute.h           |   2 +-
 src/box/lua/info.c              |  25 ++
 src/box/lua/init.c              |   2 +-
 src/box/lua/load_cfg.lua        |   3 +
 src/box/lua/net_box.c           |  98 +++++-
 src/box/lua/net_box.lua         |  27 ++
 src/box/session.cc              |  35 ++
 src/box/session.h               |  17 +
 src/box/sql.c                   |   3 +
 src/box/sql/analyze.c           |  23 +-
 src/box/sql/legacy.c            |   3 +-
 src/box/sql/prepare.c           |  56 +--
 src/box/sql/sqlInt.h            |  51 +--
 src/box/sql/vdbe.c              |   4 +-
 src/box/sql/vdbe.h              |   2 +-
 src/box/sql/vdbeInt.h           |   1 -
 src/box/sql/vdbeapi.c           | 113 ++++--
 src/box/sql/vdbeaux.c           |   6 +-
 src/box/sql_stmt_cache.c        | 305 +++++++++++++++++
 src/box/sql_stmt_cache.h        | 153 +++++++++
 src/box/xrow.c                  |  23 +-
 src/box/xrow.h                  |   4 +-
 src/lib/core/port.h             |   2 +-
 test/app-tap/init_script.result |  37 +-
 test/box/admin.result           |   2 +
 test/box/cfg.result             |   7 +
 test/box/cfg.test.lua           |   1 +
 test/box/info.result            |   1 +
 test/box/misc.result            |   5 +
 test/sql/engine.cfg             |   4 +
 test/sql/iproto.result          |   2 +-
 test/sql/prepared.result        | 737 ++++++++++++++++++++++++++++++++++++++++
 test/sql/prepared.test.lua      | 282 +++++++++++++++
 47 files changed, 2503 insertions(+), 195 deletions(-)
 create mode 100644 src/box/sql_stmt_cache.c
 create mode 100644 src/box/sql_stmt_cache.h
 create mode 100644 test/sql/prepared.result
 create mode 100644 test/sql/prepared.test.lua

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2.15.1