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443 Words 100%
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Other components

Component Translated Unfinished Unfinished words Unfinished characters Untranslated Checks Suggestions Comments
Documentation: reference/reference_lua/compat/compat_tutorial 0 0 0 0 7 0 0
Documentation: concepts/sharding/vshard_architecture 0 0 0 0 2 0 0
Documentation: concepts/replication/repl_reseed 0 0 0 0 0 0 0
Documentation: concepts/engines/memtx 0 0 0 0 0 0 0
Documentation: reference/reference_lua/datetime/interval_arithm 0 0 0 0 0 0 0
Documentation: concepts/engines/vinyl 0 0 0 0 5 0 0
Documentation: concepts/engines/index 0 0 0 0 0 0 0
Documentation: concepts/sharding/index 0 0 0 0 0 0 0
Documentation: concepts/index 0 0 0 0 0 0 0
Documentation: concepts/engines/memtx_vinyl_diff 0 0 0 0 0 0 0
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Overview

Project website www.tarantool.io/en/doc/latest
Translation process
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  • The translation uses bilingual files.
Source code repository git@github.com:tarantool/doc.git
Repository branch test-weblate
Last remote commit updated pot afee6c42
TarantoolBot authored 2 years ago
Last commit in Weblate Translated using Weblate (Russian) 7f72145f
Weblate Admin authored 2 years ago
Weblate repository http://weblate.tarantool.io/git/testing_project/documentation-conceptstriggers/
File mask locale/*/LC_MESSAGES/concepts/triggers.po
Translation file Not available
Last change None
Last author None

String statistics

Strings percent Hosted strings Words percent Hosted words Characters percent Hosted characters
Total 26 443 3,975
Translated 100% 26 100% 443 100% 3,975
Needs editing 0% 0 0% 0 0% 0
Read-only 100% 26 100% 443 100% 3,975
Failing checks 0% 0 0% 0 0% 0
Strings with suggestions 0% 0 0% 0 0% 0
Untranslated strings 0% 0 0% 0 0% 0
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User avatar None

New source string

testing_project / Documentation: concepts/triggers — English

log = require('log')

function on_connect_impl()
log.info("connected "..box.session.peer()..", sid "..box.session.id())
end

function on_disconnect_impl()
log.info("disconnected, sid "..box.session.id())
end

function on_auth_impl(user)
log.info("authenticated sid "..box.session.id().." as "..user)
end

function on_connect() pcall(on_connect_impl) end
function on_disconnect() pcall(on_disconnect_impl) end
function on_auth(user) pcall(on_auth_impl, user) end

box.session.on_connect(on_connect)
box.session.on_disconnect(on_disconnect)
box.session.on_auth(on_auth)
2 years ago
User avatar None

New source string

testing_project / Documentation: concepts/triggers — English

Here we log connect and disconnect events into Tarantool server log.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

**Example:**
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

Triggers can be useful in solving problems with replication. See details in :ref:`Resolving replication conflicts <replication-problem_solving>`.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

You can call any :samp:`on_{event}` function with no arguments to get a list of its triggers. For example, use ``box.session.on_connect()`` to return a table of all connect-trigger functions.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

The :samp:`on_{event}` functions all have parameters which are function pointers, and they all return function pointers. Remember that a Lua function definition such as ``function f() x = x + 1 end`` is the same as ``f = function () x = x + 1 end`` - in both cases ``f`` gets a function pointer. And ``trigger = box.session.on_connect(f)`` is the same as ``trigger = box.session.on_connect(function () x = x + 1 end)`` - in both cases ``trigger`` gets the function pointer which was passed.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

Triggers are replaceable. The request to "redefine a trigger" implies passing a new trigger function and an old trigger function to one of the :samp:`on_{event}` functions.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

Triggers must work within the event context, that is, operate variables passed as the trigger function arguments. Triggers should not affect the global state of the program or change things unrelated to the event. If a trigger performs such calls as, for example, `os.exit() <http://www.lua.org/manual/5.1/manual.html#pdf-os.exit>`_ or :doc:`/reference/reference_lua/box_txn_management/rollback`, the result of its execution is undefined.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

There can be multiple triggers for one event. In this case, triggers are executed in the reverse order that they were defined in.
2 years ago
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New source string

testing_project / Documentation: concepts/triggers — English

Triggers have low overhead. If a trigger is not defined, then the overhead is minimal: merely a pointer dereference and check. If a trigger is defined, then its overhead is equivalent to the overhead of calling a function.
2 years ago
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