--[[----------------------------------------------------------------------------

WFRxIndexStorePerformanceTest.lua

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ADOBE CONFIDENTIAL
------------------
Copyright 2020 Adobe
All Rights Reserved.

NOTICE: All information contained herein is, and remains
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and technical concepts contained herein are proprietary to Adobe
and its suppliers and are protected by all applicable intellectual
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Dissemination of this information or reproduction of this material
is strictly forbidden unless prior written permission is obtained
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------------------------------------------------------------------------------]]

	-- Rx
local Rx = require 'Rx'
local Observable = Rx.Observable

	-- WF.core.os
local KSPathUtils = require 'KSPathUtils'
local WFFileUtils = require 'WFFileUtils'
local KSIdGenerator = require 'KSIdGenerator'

	-- WF.core.self_test
local WFCatAssetTestUtils = require 'WFCatAssetTestUtils'
local WFRxTestCase = require 'WFRxTestCase'
local WFTestFileUtils = require 'WFTestFileUtils'

	-- WF.core.utils
local WFRxDocStore = require 'WFRxDocStore'
local WFRxIndexStore = require 'WFRxIndexStore'


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--============================================================================--

local WFRxIndexStorePerformanceTest = {}

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local fakeCatalogId = KSIdGenerator.uuidInLowercaseHex()

local function getAssets( n ) 
	local assets = {}
	for i = 1, n do
		local assetId = KSIdGenerator.uuidInLowercaseHex()
		local revId = KSIdGenerator.uuidInLowercaseHex()
		local docValue = WFCatAssetTestUtils.createBaseAssetDocument( fakeCatalogId, assetId, revId, 'fakeSha256', '/fakePath' )
		docValue = WFCatAssetTestUtils.addBasicOzMetadataUpdate( docValue, fakeCatalogId, assetId, revId )
		docValue = WFCatAssetTestUtils.addOriginalPathToDocument( docValue, 'fakeSha256', '/fakePath' )
		assets[ i ] = docValue
	end
	return assets
end 

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local function getAlbumAssets( n )
	
	local albumAssets = {}
	for i = 1, n do
		albumAssets[ i ] = {
			_id = KSIdGenerator.uuidInLowercaseHex(),
			type = 'album_asset',
			asset = {
				id = KSIdGenerator.uuidInLowercaseHex()
			},
			album = {
				id = KSIdGenerator.uuidInLowercaseHex()
			}
		}
	 
	end
	
	return albumAssets
end

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local function addManyRxQueriesPerformanceTest( numReadThreads )
	local testName =  'rxTestManyRxQueries_' .. tostring( numReadThreads ) .. 'ROThreads_testPerformance'
	
	WFRxIndexStorePerformanceTest[ testName ] = function( rxTest )
	
		rxTest:setTimeLimit( 2000 )
		
		local folder = WFTestFileUtils.createTestFolder( rxTest, testName )
		
		local docStore = WFRxDocStore( KSPathUtils.child( folder, 'Managed Catalog.mcat' ) )
		
		local indexStore = WFRxIndexStore( docStore, 'WFCatIndexDefinitions.lua', numReadThreads )
		
		for i = 1, 500 do
			rxTest:waitFor( docStore:bulkSetDocValue( getAssets( 100 ) ) )
		end
		
		rxTest:expectSingleValue( indexStore:query( { sql = [[SELECT docId FROM assets]], quiesceUntilUpToDate = true } ):take(1):map( function( results ) return #results end ),
									50000 )
		
		rxTest:finally( function()
			docStore:close()
			indexStore:close()
			WFFileUtils.delete( folder )
		end )
		rxTest:sleep( 5 )
	
		rxTest:measurePerformance( 
			function()
				
				local numQueries = 1000
				local allQueries = {}
				for i = 1, numQueries do
					if i % 2 == 0 then
						allQueries[ i ] = indexStore:queryOnce( { 
											sql = [[SELECT docId FROM assets]],
						} )
					else
						allQueries[ i ] = docStore:bulkSetDocValue( getAlbumAssets( 100 ) ):map( function() return {} end ) 
					end
				end
		
				rxTest:expectSingleValue( Observable.combineLatest( unpack( allQueries ) )
					:map( function( ... )
						local results = { ... }
						local total = 0
						for _, result in ipairs( results ) do
							total = total + #result
						end
						return total
					end ), 50000 * ( numQueries / 2 ) )
					
			end )	
	end
	
end

addManyRxQueriesPerformanceTest( 0 )
addManyRxQueriesPerformanceTest( 1 )
addManyRxQueriesPerformanceTest( 2 )
addManyRxQueriesPerformanceTest( 4 )

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local function testQueryPerformance( rxTest, singleColumnQuery )

	rxTest:setTimeLimit( 2000 )

	local folder = WFTestFileUtils.createTestFolder( rxTest, rxTest:testName() )
		
	local docStore = WFRxDocStore( KSPathUtils.child( folder, 'Managed Catalog.mcat' ) )
		
	local indexStore = WFRxIndexStore( docStore, 'WFCatIndexDefinitions.lua', 0 )
		
	rxTest:finally( function()
		docStore:close()
		indexStore:close()
		WFFileUtils.delete( folder )
	end )
		
	for i = 1, 100 do
		rxTest:waitFor( docStore:bulkSetDocValue( getAssets( 100 ) ) )
	end

	rxTest:expectSingleValue( indexStore:query( { 
				sql = [[SELECT docId FROM assets]], 
				quiesceUntilUpToDate = true 
			} )
			:take(1)
			:map( function( results ) 
				return #results 
			end ), 10000 )

	rxTest:measurePerformance( 
		function()
			
			local numQueries = 1000
			local allQueries = {}
			
			for i = 1, numQueries do
				if singleColumnQuery then
					allQueries[ i ] = indexStore:queryOnce( { 
							sql = [[SELECT docId FROM assets]],
							singleColumnQuery = true,
					} )
				else
					allQueries[ i ] = indexStore:queryOnce( { 
							sql = [[SELECT docId FROM assets ]],
					} )
				end
			end
	
			rxTest:expectSingleValue( Observable.combineLatest( unpack( allQueries ) )
				:map( function( ... )
					local results = { ... }
					local total = 0
					for _, result in ipairs( results ) do
						total = total + #result
					end
					return total
				end ), 10000 * numQueries )
				
		end )	


end

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function WFRxIndexStorePerformanceTest.rxTestSingleColumnQuery_testPerformance( rxTest )

	testQueryPerformance( rxTest, true )

end

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function WFRxIndexStorePerformanceTest.rxTestNormalQuery_testPerformance( rxTest )

	testQueryPerformance( rxTest, false )

end

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return WFRxTestCase.wrapSuite( WFRxIndexStorePerformanceTest )
