drivers: add grant method for all driver spaces

There was a bug that grant for a user didn't work for spaces with
`_ready_buffer` suffix.

After the patch the `grant` method was added for each driver that
accounts the `grant` for all spaces.

Closes #237

queue/abstract.lua

@@ -346,7 +346,7 @@ function tube.grant(self, user, args)
     tube_grant_space(user, '_queue', 'read')
     tube_grant_space(user, '_queue_consumers')
     tube_grant_space(user, '_queue_taken_2')
-    tube_grant_space(user, self.name)
+    self.raw:grant(user, {if_not_exists = true})
     session.grant(user)
 
     if args.call then

queue/abstract/driver/fifo.lua

@@ -61,6 +61,11 @@ function tube.new(space, on_task_change)
     return self
 end
 
+-- method.grant grants provided user to all spaces of driver.
+function method.grant(self, user, opts)
+    box.schema.user.grant(user, 'read,write', 'space', self.space.name, opts)
+end
+
 -- normalize task: cleanup all internal fields
 function method.normalize_task(self, task)
     return task

queue/abstract/driver/fifottl.lua

@@ -202,6 +202,11 @@ function tube.new(space, on_task_change, opts)
     return self
 end
 
+-- method.grant grants provided user to all spaces of driver.
+function method.grant(self, user, opts)
+    box.schema.user.grant(user, 'read,write', 'space', self.space.name, opts)
+end
+
 -- cleanup internal fields in task
 function method.normalize_task(self, task)
     return task and task:transform(3, 5)

queue/abstract/driver/utube.lua

@@ -126,6 +126,14 @@ function tube.new(space, on_task_change, opts)
     return self
 end
 
+-- method.grant grants provided user to all spaces of driver.
+function method.grant(self, user, opts)
+    box.schema.user.grant(user, 'read,write', 'space', self.space.name, opts)
+    if self.space_ready_buffer ~= nil then
+        box.schema.user.grant(user, 'read,write', 'space', self.space_ready_buffer.name, opts)
+    end
+end
+
 -- normalize task: cleanup all internal fields
 function method.normalize_task(self, task)
     return task and task:transform(3, 1)

queue/abstract/driver/utubettl.lua

@@ -386,6 +386,14 @@ function tube.new(space, on_task_change, opts)
     return self
 end
 
+-- method.grant grants provided user to all spaces of driver.
+function method.grant(self, user, opts)
+    box.schema.user.grant(user, 'read,write', 'space', self.space.name, opts)
+    if self.space_ready_buffer ~= nil then
+        box.schema.user.grant(user, 'read,write', 'space', self.space_ready_buffer.name, opts)
+    end
+end
+
 -- cleanup internal fields in task
 function method.normalize_task(self, task)
     return task and task:transform(i_next_event, i_data - i_next_event)

t/090-grant-check.t

@@ -1,6 +1,6 @@
 #!/usr/bin/env tarantool
 local test = require('tap').test()
-test:plan(3)
+test:plan(9)
 
 local test_user = 'test'
 local test_pass = '1234'
@@ -21,6 +21,68 @@ local engine = os.getenv('ENGINE') or 'memtx'
 
 local qc = require('queue.compat')
 
+local test_drivers_grant_cases = {
+  {
+    name = 'fifo',
+    queue_type = 'fifo',
+  },
+  {
+    name = 'fifottl',
+    queue_type = 'fifottl',
+  },
+  {
+    name = 'utube_default',
+    queue_type = 'utube',
+    storage_mode = 'default',
+  },
+  {
+    name = 'utube_ready_buffer',
+    queue_type = 'utube',
+    storage_mode = 'ready_buffer',
+  },
+  {
+    name = 'utubettl_default',
+    queue_type = 'utubettl',
+    storage_mode = 'default',
+  },
+  {
+    name = 'utubettl_ready_buffer',
+    queue_type = 'utubettl',
+    storage_mode = 'ready_buffer',
+  },
+}
+
+for _, tc in pairs(test_drivers_grant_cases) do
+    test:test('test dirvers grant ' .. tc.name, function(test)
+        local queue = require('queue')
+        box.schema.user.create(test_user, { password = test_pass })
+
+        test:plan(2)
+
+        local tube_opts = { engine = engine }
+        if tc.storage_mode ~= nil and tc.storage_mode ~= 'default' then
+            tube_opts.storage_mode = tc.storage_mode
+            tube_opts.engine = 'memtx'
+        end
+        local tube = queue.create_tube('test', tc.queue_type, tube_opts)
+        tube:put('help')
+
+        tube:grant(test_user)
+
+        box.session.su(test_user)
+        local a = tube:take()
+        test:is(a[1], 0, 'we aren\'t getting any error')
+
+        local c = tube:ack(a[1])
+        test:is(c[1], 0, 'we aren\'t getting any error')
+
+        box.session.su('admin')
+
+        box.schema.user.drop(test_user)
+        tube:drop()
+    end)
+end
+
 test:test('check for space grants', function(test)
     -- prepare for tests
     local queue = require('queue')