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box.watch('box.status', function()
if box.info.ro then
return
end
-- ====================================
-- key_value space
-- ====================================
box.schema.create_space('key_value', {
format = {
{ name = 'key', type = 'string' },
{ name = 'bucket_id', type = 'unsigned' },
{ name = 'value', type = 'string' }
},
if_not_exists = true
})
-- create key_value space indexes
box.space.key_value:create_index('id', {type = 'tree', parts = { 'key' }, unique = true, if_not_exists = true})
box.space.key_value:create_index('bucket_id', { type = 'tree', parts = { 'bucket_id' }, unique = false, if_not_exists = true })
-- ====================================
-- filer_metadata space
-- ====================================
box.schema.create_space('filer_metadata', {
format = {
{ name = 'directory', type = 'string' },
{ name = 'bucket_id', type = 'unsigned' },
{ name = 'name', type = 'string' },
{ name = 'expire_at', type = 'unsigned' },
{ name = 'data', type = 'string' }
},
if_not_exists = true
})
-- create filer_metadata space indexes
box.space.filer_metadata:create_index('id', {type = 'tree', parts = { 'directory', 'name' }, unique = true, if_not_exists = true})
box.space.filer_metadata:create_index('bucket_id', { type = 'tree', parts = { 'bucket_id' }, unique = false, if_not_exists = true })
box.space.filer_metadata:create_index('directory_idx', { type = 'tree', parts = { 'directory' }, unique = false, if_not_exists = true })
box.space.filer_metadata:create_index('name_idx', { type = 'tree', parts = { 'name' }, unique = false, if_not_exists = true })
box.space.filer_metadata:create_index('expire_at_idx', { type = 'tree', parts = { 'expire_at' }, unique = false, if_not_exists = true})
end)
-- functions for filer_metadata space
local filer_metadata = {
delete_by_directory_idx = function(directory)
local space = box.space.filer_metadata
local index = space.index.directory_idx
-- for each finded directories
for _, tuple in index:pairs({ directory }, { iterator = 'EQ' }) do
space:delete({ tuple[1], tuple[3] })
end
return true
end,
find_by_directory_idx_and_name = function(dirPath, startFileName, includeStartFile, limit)
local space = box.space.filer_metadata
local directory_idx = space.index.directory_idx
-- choose filter name function
local filter_filename_func
if includeStartFile then
filter_filename_func = function(value) return value >= startFileName end
else
filter_filename_func = function(value) return value > startFileName end
end
-- init results
local results = {}
-- for each finded directories
for _, tuple in directory_idx:pairs({ dirPath }, { iterator = 'EQ' }) do
-- filter by name
if filter_filename_func(tuple[3]) then
table.insert(results, tuple)
end
end
-- sort
table.sort(results, function(a, b) return a[3] < b[3] end)
-- apply limit
if #results > limit then
local limitedResults = {}
for i = 1, limit do
table.insert(limitedResults, results[i])
end
results = limitedResults
end
-- return
return results
end,
is_expired = function(args, tuple)
return (tuple[4] > 0) and (require('fiber').time() > tuple[4])
end
}
-- register functions for filer_metadata space, set grants
rawset(_G, 'filer_metadata', filer_metadata)
for name, _ in pairs(filer_metadata) do
box.schema.func.create('filer_metadata.' .. name, { setuid = true, if_not_exists = true })
box.schema.user.grant('storage', 'execute', 'function', 'filer_metadata.' .. name, { if_not_exists = true })
end
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