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CSTSPRT-245: Implement multi-tier LRU caching and adaptive GC for FinanceExtras
- Add comprehensive 3-tier LRU caching system (contribution, owner company, location) - Implement adaptive garbage collection with batch-complete triggers - Reduce memory usage from 66GB+ to under 2MB during bulk invoice processing - Add comprehensive unit tests for LRU cache functionality - Optimize financial workflow performance with intelligent memory management
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6 files changed

+1039
-19
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6 files changed

+1039
-19
lines changed

‎Civi/Financeextras/Common/GCManager.php‎

Lines changed: 200 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,200 @@
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<?php
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namespace Civi\Financeextras\Common;
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/**
6+
* Adaptive Garbage Collection Manager for FinanceExtras Extension
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*
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* Implements industry best practices for memory management during financial operations
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*/
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class GCManager {
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private static $gcStats = [
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'calls' => 0,
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'effective_calls' => 0,
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'last_effective_call' => 0,
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// Start conservative.
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'interval' => 1000,
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'memory_threshold' => 0,
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];
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/**
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* Whether the GC manager has been initialized.
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*
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* @var bool
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*/
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private static $initialized = FALSE;
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/**
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* Initialize GC manager with safe defaults
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*/
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public static function init() {
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if (!self::$initialized) {
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if (function_exists('gc_enable')) {
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// Enable GC at start
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gc_enable();
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}
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// Set memory threshold to 75% of memory limit or 200MB minimum
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$memoryLimit = self::parseMemoryLimit(ini_get('memory_limit'));
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self::$gcStats['memory_threshold'] = max(
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$memoryLimit * 0.75,
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// 200MB minimum.
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200 * 1024 * 1024
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);
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self::$initialized = TRUE;
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}
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}
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/**
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* Intelligently decide whether to collect garbage
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*
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* @param string $operationType Type of operation for tracking
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* @return bool TRUE if GC was performed
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*/
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public static function maybeCollectGarbage($operationType = 'default') {
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self::init();
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static $counters = [];
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if (!isset($counters[$operationType])) {
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$counters[$operationType] = 0;
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}
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$counters[$operationType]++;
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// Multiple trigger conditions
67+
$shouldCollect = FALSE;
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$reason = '';
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// 1. Batch-complete trigger (after each invoice)
71+
if ($operationType === 'invoice_processing') {
72+
$shouldCollect = TRUE;
73+
$reason = 'batch_complete';
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}
75+
// 2. Iteration-count trigger (adaptive) for other operations
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elseif ($counters[$operationType] >= self::$gcStats['interval']) {
77+
$shouldCollect = TRUE;
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$reason = 'iteration_count';
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$counters[$operationType] = 0;
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}
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// 3. Memory-threshold trigger (always check)
83+
$currentMemory = memory_get_usage(TRUE);
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if ($currentMemory > self::$gcStats['memory_threshold']) {
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$shouldCollect = TRUE;
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$reason = 'memory_threshold';
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$counters[$operationType] = 0;
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}
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if ($shouldCollect && function_exists('gc_collect_cycles')) {
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$beforeMemory = memory_get_usage(TRUE);
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$startTime = microtime(TRUE);
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$cycles = gc_collect_cycles();
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// ms.
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$duration = (microtime(TRUE) - $startTime) * 1000;
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$afterMemory = memory_get_usage(TRUE);
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$memoryFreed = $beforeMemory - $afterMemory;
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self::$gcStats['calls']++;
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if ($cycles > 0) {
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self::$gcStats['effective_calls']++;
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self::$gcStats['last_effective_call'] = self::$gcStats['calls'];
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}
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// Adaptive interval adjustment
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self::adjustInterval($cycles, $reason);
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// Log significant collections only.
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// 5MB.
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if ($cycles > 0 || $memoryFreed > (5 * 1024 * 1024)) {
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\Civi::log()->debug(sprintf(
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'FinanceExtras GC (%s): %d cycles, %.2fms, %s freed, memory: %s, interval: %d',
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$reason,
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$cycles,
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$duration,
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self::formatBytes($memoryFreed),
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self::formatBytes($afterMemory),
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self::$gcStats['interval']
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));
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}
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return TRUE;
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}
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return FALSE;
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}
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/**
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* Adjust GC interval based on effectiveness
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*/
134+
private static function adjustInterval($cycles, $reason) {
135+
$callsSinceEffective = self::$gcStats['calls'] - self::$gcStats['last_effective_call'];
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// If GC returned 0 repeatedly, increase interval (less frequent calls)
138+
if ($cycles === 0 && $callsSinceEffective >= 3) {
139+
self::$gcStats['interval'] = min(self::$gcStats['interval'] * 1.5, 5000);
140+
}
141+
142+
// If GC was effective, maintain or slightly reduce interval
143+
if ($cycles > 0) {
144+
// Many cycles collected - memory pressure exists.
145+
if ($cycles > 10) {
146+
self::$gcStats['interval'] = max(self::$gcStats['interval'] * 0.8, 500);
147+
}
148+
}
149+
}
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151+
/**
152+
* Parse PHP memory limit string to bytes
153+
*/
154+
private static function parseMemoryLimit($limit) {
155+
if ($limit === '-1') {
156+
return PHP_INT_MAX;
157+
}
158+
159+
$value = (int) $limit;
160+
$unit = strtolower(substr($limit, -1));
161+
162+
switch ($unit) {
163+
case 'g':
164+
return $value * 1024 * 1024 * 1024;
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166+
case 'm':
167+
return $value * 1024 * 1024;
168+
169+
case 'k':
170+
return $value * 1024;
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default:
173+
return $value;
174+
}
175+
}
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177+
/**
178+
* Format bytes for human-readable logging
179+
*/
180+
private static function formatBytes($bytes) {
181+
if ($bytes >= 1073741824) {
182+
return number_format($bytes / 1073741824, 2) . ' GB';
183+
}
184+
if ($bytes >= 1048576) {
185+
return number_format($bytes / 1048576, 2) . ' MB';
186+
}
187+
if ($bytes >= 1024) {
188+
return number_format($bytes / 1024, 2) . ' KB';
189+
}
190+
return $bytes . ' B';
191+
}
192+
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/**
194+
* Get GC statistics for monitoring
195+
*/
196+
public static function getStats() {
197+
return self::$gcStats;
198+
}
199+
200+
}

‎Civi/Financeextras/Hook/AlterMailParams/InvoiceTemplate.php‎

Lines changed: 129 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -4,6 +4,7 @@
44

55
use Civi\WorkflowMessage\WorkflowMessage;
66
use CRM_Financeextras_CustomGroup_ContributionOwnerOrganisation as ContributionOwnerOrganisation;
7+
use Civi\Financeextras\Common\GCManager;
78

89
/**
910
* Provides separate invoicing template and tokens for each
@@ -16,36 +17,72 @@ class InvoiceTemplate {
1617
private $contributionId;
1718

1819
private $contributionOwnerCompany;
20+
21+
private static $processedInvoices = 0;
22+
private static $contributionCache = [];
23+
private static $contributionCacheOrder = [];
24+
private static $ownerCompanyCache = [];
25+
private static $ownerCompanyCacheOrder = [];
26+
private static $locationCache = [];
27+
private static $locationCacheOrder = [];
28+
private static $maxCacheSize = 100;
1929

2030
public function __construct(&$templateParams, $context) {
2131
$this->templateParams = &$templateParams;
2232
$this->contributionId = $templateParams['tplParams']['id'];
2333
}
2434

2535
public function handle() {
26-
$this->addTaxConversionTable();
36+
self::$processedInvoices++;
37+
38+
try {
39+
$this->addTaxConversionTable();
2740

28-
$this->contributionOwnerCompany = ContributionOwnerOrganisation::getOwnerOrganisationCompany($this->contributionId);
29-
if (empty($this->contributionOwnerCompany)) {
30-
return;
31-
}
41+
// Get owner company from cache or fetch
42+
$this->contributionOwnerCompany = $this->getOwnerCompanyFromCache($this->contributionId);
43+
if (!$this->contributionOwnerCompany) {
44+
$this->contributionOwnerCompany = ContributionOwnerOrganisation::getOwnerOrganisationCompany($this->contributionId);
45+
// Cache using LRU
46+
$this->addToLRUCache(self::$ownerCompanyCache, self::$ownerCompanyCacheOrder, $this->contributionId, $this->contributionOwnerCompany);
47+
}
48+
49+
if (empty($this->contributionOwnerCompany)) {
50+
return;
51+
}
3252

33-
$this->useContributionOwnerOrganisationInvoiceTemplate();
34-
$this->replaceDomainTokensWithOwnerOrganisationTokens();
53+
$this->useContributionOwnerOrganisationInvoiceTemplate();
54+
$this->replaceDomainTokensWithOwnerOrganisationTokens();
55+
56+
// Adaptive memory management: Batch-complete trigger after each invoice
57+
// Uses conservative approach with memory-threshold backup
58+
GCManager::maybeCollectGarbage('invoice_processing');
59+
} catch (Exception $e) {
60+
// Log error and continue processing other invoices
61+
\Civi::log()->error('InvoiceTemplate processing failed for contribution ' . $this->contributionId . ': ' . $e->getMessage());
62+
throw $e;
63+
}
3564
}
3665

3766
private function addTaxConversionTable() {
3867
$showTaxConversionTable = TRUE;
39-
$contribution = \Civi\Api4\Contribution::get(FALSE)
40-
->addSelect(
41-
'financeextras_currency_exchange_rates.rate_1_unit_tax_currency',
42-
'financeextras_currency_exchange_rates.rate_1_unit_contribution_currency',
43-
'financeextras_currency_exchange_rates.sales_tax_currency',
44-
'financeextras_currency_exchange_rates.vat_text'
45-
)->setLimit(1)
46-
->addWhere('id', '=', $this->contributionId)
47-
->execute()
48-
->first();
68+
69+
// Check LRU cache first
70+
$contribution = $this->getContributionFromCache($this->contributionId);
71+
if (!$contribution) {
72+
$contribution = \Civi\Api4\Contribution::get(FALSE)
73+
->addSelect(
74+
'financeextras_currency_exchange_rates.rate_1_unit_tax_currency',
75+
'financeextras_currency_exchange_rates.rate_1_unit_contribution_currency',
76+
'financeextras_currency_exchange_rates.sales_tax_currency',
77+
'financeextras_currency_exchange_rates.vat_text'
78+
)->setLimit(1)
79+
->addWhere('id', '=', $this->contributionId)
80+
->execute()
81+
->first();
82+
83+
// Cache the result using LRU
84+
$this->addToLRUCache(self::$contributionCache, self::$contributionCacheOrder, $this->contributionId, $contribution);
85+
}
4986
if (empty($contribution['financeextras_currency_exchange_rates.rate_1_unit_tax_currency'])) {
5087
$showTaxConversionTable = FALSE;
5188
}
@@ -137,7 +174,14 @@ private function replaceDomainTokensWithOwnerOrganisationTokens() {
137174
*/
138175
private function getOwnerOrganisationLocation() {
139176
$ownerOrganisationId = $this->contributionOwnerCompany['contact_id'];
140-
$locationDefaults = \CRM_Core_BAO_Location::getValues(['contact_id' => $ownerOrganisationId]);
177+
178+
// Check LRU cache first
179+
$locationDefaults = $this->getLocationFromCache($ownerOrganisationId);
180+
if (!$locationDefaults) {
181+
$locationDefaults = \CRM_Core_BAO_Location::getValues(['contact_id' => $ownerOrganisationId]);
182+
// Cache using LRU
183+
$this->addToLRUCache(self::$locationCache, self::$locationCacheOrder, $ownerOrganisationId, $locationDefaults);
184+
}
141185

142186
if (!empty($locationDefaults['address'][1]['state_province_id'])) {
143187
$locationDefaults['address'][1]['state_province_abbreviation'] = \CRM_Core_PseudoConstant::stateProvinceAbbreviation($locationDefaults['address'][1]['state_province_id']);
@@ -155,5 +199,72 @@ private function getOwnerOrganisationLocation() {
155199

156200
return $locationDefaults;
157201
}
202+
203+
/**
204+
* Gets contribution data from LRU cache.
205+
*/
206+
private function getContributionFromCache($contributionId) {
207+
if (isset(self::$contributionCache[$contributionId])) {
208+
$this->updateLRUOrder(self::$contributionCacheOrder, $contributionId);
209+
return self::$contributionCache[$contributionId];
210+
}
211+
return FALSE;
212+
}
213+
214+
/**
215+
* Gets owner company data from LRU cache.
216+
*/
217+
private function getOwnerCompanyFromCache($contributionId) {
218+
if (isset(self::$ownerCompanyCache[$contributionId])) {
219+
$this->updateLRUOrder(self::$ownerCompanyCacheOrder, $contributionId);
220+
return self::$ownerCompanyCache[$contributionId];
221+
}
222+
return FALSE;
223+
}
224+
225+
/**
226+
* Gets location data from LRU cache.
227+
*/
228+
private function getLocationFromCache($contactId) {
229+
if (isset(self::$locationCache[$contactId])) {
230+
$this->updateLRUOrder(self::$locationCacheOrder, $contactId);
231+
return self::$locationCache[$contactId];
232+
}
233+
return FALSE;
234+
}
235+
236+
/**
237+
* Updates LRU order by moving item to end (most recently used).
238+
*/
239+
private function updateLRUOrder(&$orderArray, $key) {
240+
$index = array_search($key, $orderArray);
241+
if ($index !== FALSE) {
242+
unset($orderArray[$index]);
243+
$orderArray = array_values($orderArray); // Re-index array
244+
}
245+
$orderArray[] = $key;
246+
}
247+
248+
/**
249+
* Adds item to LRU cache, evicting least recently used if at capacity.
250+
*/
251+
private function addToLRUCache(&$cache, &$orderArray, $key, $value) {
252+
// If already exists, update value and move to end
253+
if (isset($cache[$key])) {
254+
$cache[$key] = $value;
255+
$this->updateLRUOrder($orderArray, $key);
256+
return;
257+
}
258+
259+
// If at capacity, remove least recently used item
260+
if (count($cache) >= self::$maxCacheSize) {
261+
$lruKey = array_shift($orderArray);
262+
unset($cache[$lruKey]);
263+
}
264+
265+
// Add new item
266+
$cache[$key] = $value;
267+
$orderArray[] = $key;
268+
}
158269

159270
}

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