api: add hardcoded versioning support

Added the _VERSION variable to the exported table.
Is part of the task [1].

1. github.com/tarantool/roadmap-internal/issues/204

.github/workflows/packaging.yml

@@ -3,6 +3,22 @@ name: packaging
 on: [push, pull_request]
 
 jobs:
+  # Run not only on tags, otherwise dependent job will skip.
+  version-check:
+    # Skip pull request job when the source branch is in the same
+    # repository.
+    if: |
+      github.event_name == 'push' ||
+      github.event.pull_request.head.repo.full_name != github.repository
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check module version
+        # We need this step to run only on push with tag.
+        if: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') }}
+        uses: tarantool/actions/check-module-version@master
+        with:
+          module-name: 'queue'
+
   package:
     # Skip pull request jobs when the source branch is in the same
     # repository.
@@ -12,6 +28,7 @@ jobs:
     # Packaging for CentOS 7 does not work with other versions, see:
     # https://github.com/packpack/packpack/issues/145
     runs-on: ubuntu-20.04
+    needs: version-check
 
     strategy:
       fail-fast: false

.github/workflows/publish.yml

@@ -6,6 +6,16 @@ on:
     tags: ['*']
 
 jobs:
+  version-check:
+    # We need this job to run only on push with tag.
+    if: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') }}
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check module version
+        uses: tarantool/actions/check-module-version@master
+        with:
+          module-name: 'queue'
+
   publish-rockspec-scm-1:
     if: github.ref == 'refs/heads/master'
     runs-on: ubuntu-latest
@@ -19,6 +29,7 @@ jobs:
   publish-rockspec-tag:
     if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
+    needs: version-check
     steps:
       - uses: actions/checkout@v3
 

queue-scm-1.rockspec

@@ -27,7 +27,8 @@ build = {
         ['queue.abstract.driver.limfifottl'] = 'queue/abstract/driver/limfifottl.lua',
         ['queue.compat']                     = 'queue/compat.lua',
         ['queue.util']                       = 'queue/util.lua',
-        ['queue']                            = 'queue/init.lua'
+        ['queue']                            = 'queue/init.lua',
+        ['queue.version']                    = 'queue/version.lua'
     }
 }
 

queue/init.lua

@@ -39,6 +39,7 @@ queue = setmetatable({
     register_driver = register_driver,
     state = queue_state.show,
     cfg = deferred_cfg,
+    _VERSION = require('queue.version'),
 }, { __index = function()
         print(debug.traceback())
         error('Please configure box.cfg{} in read/write mode first')

queue/version.lua

@@ -0,0 +1,4 @@
+-- Сontains the module version.
+-- Requires manual update in case of release commit.
+
+return '1.2.5'