[tarantool-patches] [PATCH v1 1/1] Tarantoolctl "enter" with set language

[imeevma@tarantool.org]

This patch allow to use option "--language" with
"tarantoolctl enter" command. Also default value
for language were added in default configuration
file. Language is either SQL or Lua.

Closes #2385.
---
Branch: https://github.com/tarantool/tarantool/tree/imeevma/gh-2385-select-input-language-tarantoolctl
Issue: https://github.com/tarantool/tarantool/issues/2385

 extra/dist/CMakeLists.txt       |  1 +
 extra/dist/default/tarantool.in |  1 +
 extra/dist/tarantoolctl.in      | 22 +++++++++++++++++++++-
 3 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/extra/dist/CMakeLists.txt b/extra/dist/CMakeLists.txt
index 862689e..3045b5a 100644
--- a/extra/dist/CMakeLists.txt
+++ b/extra/dist/CMakeLists.txt
@@ -34,6 +34,7 @@ message (STATUS "tarantoolctl logdir: ${TARANTOOL_LOGDIR}")
 set(TARANTOOL_RUNDIR "${CMAKE_INSTALL_FULL_LOCALSTATEDIR}/run/tarantool")
 message (STATUS "tarantoolctl rundir: ${TARANTOOL_RUNDIR}")
 set(TARANTOOL_USER "tarantool")
+set(TARANTOOL_LANGUAGE "lua")
 set(SYSCONFIG_AVAILABLEDIR "tarantool/instances.available")
 set(SYSCONFIG_ENABLEDDIR "tarantool/instances.enabled")
 set(TARANTOOL_AVAILABLEDIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}/${SYSCONFIG_AVAILABLEDIR}")
diff --git a/extra/dist/default/tarantool.in b/extra/dist/default/tarantool.in
index 9a8dad3..01e7144 100644
--- a/extra/dist/default/tarantool.in
+++ b/extra/dist/default/tarantool.in
@@ -20,6 +20,7 @@ default_cfg = {
     vinyl_dir  = "@TARANTOOL_DATADIR@", -- @TARANTOOL_DATADIR@/${INSTANCE}
     log        = "@TARANTOOL_LOGDIR@", -- @TARANTOOL_LOGDIR@/${INSTANCE}.log
     username   = "@TARANTOOL_USER@",
+    language   = "@TARANTOOL_LANGUAGE@",
 }
 
 -- instances.available - all available instances
diff --git a/extra/dist/tarantoolctl.in b/extra/dist/tarantoolctl.in
index 2dd5d74..55711b8 100755
--- a/extra/dist/tarantoolctl.in
+++ b/extra/dist/tarantoolctl.in
@@ -155,6 +155,11 @@ local function load_default_file(default_file)
     d.vinyl_dir = fio.pathjoin(d.vinyl_dir, instance_name)
     d.log       = fio.pathjoin(d.log,       instance_name .. '.log')
 
+    d.language  = (d.language or "lua"):lower()
+    if d.language ~= "lua" and d.language ~= "sql" then
+        d.language = "lua"
+    end
+
     default_cfg = d
 
     if not usermode then
@@ -454,6 +459,7 @@ local function wrapper_cfg(cfg)
     elseif cfg.background == nil then
         cfg.background = true
     end
+    cfg.language = nil
 
     mk_default_dirs(cfg)
     local success, data = pcall(orig_cfg, cfg)
@@ -629,6 +635,17 @@ local function logrotate()
 end
 
 local function enter()
+    local options = keyword_arguments
+    local language = options.language
+    if language ~= nil then
+        language = language:lower()
+        if language ~= "lua" and language ~= "sql" then
+            log.warn("Language \"%s\" is not recognized. Default language" ..
+                     " \"%s\" is set.", language, default_cfg.language)
+            language = nil
+        end
+    end
+    language = language or default_cfg.language
     local console_sock_path = uri.parse(console_sock).service
     if fio.stat(console_sock_path) == nil then
         log.error("Can't connect to %s (%s)", console_sock_path, errno.strerror())
@@ -644,7 +661,9 @@ local function enter()
         console_sock, TIMEOUT_INFINITY
     )
 
-    console.on_start(function(self) self:eval(cmd) end)
+    local cmd_language = string.format("\\set language %s", language)
+
+    console.on_start(function(self) self:eval(cmd) self:eval(cmd_language) end)
     console.on_client_disconnect(function(self) self.running = false end)
     console.start()
     return 0
@@ -1284,6 +1303,7 @@ do
         { 'chdir',       'string'  },
         { 'only-server', 'string'  },
         { 'server',      'string'  },
+        { 'language',    'string'  },
     })
 
     local cmd_name
-- 
2.7.4