ai_upgrade_assistant-0.2.0-alpha2/src/Service/UpgradePathGenerator.php
src/Service/UpgradePathGenerator.php
<?php
namespace Drupal\ai_upgrade_assistant\Service;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\State\StateInterface;
use Drupal\Core\Logger\LoggerChannelFactoryInterface;
use Drupal\ai_upgrade_assistant\Service\MachineLearning\PatternLearningManager;
/**
* Service for generating optimal upgrade paths.
*/
class UpgradePathGenerator {
/**
* The pattern learning manager.
*
* @var \Drupal\ai_upgrade_assistant\Service\MachineLearning\PatternLearningManager
*/
protected $patternLearning;
/**
* The module handler.
*
* @var \Drupal\Core\Extension\ModuleHandlerInterface
*/
protected $moduleHandler;
/**
* The config factory.
*
* @var \Drupal\Core\Config\ConfigFactoryInterface
*/
protected $configFactory;
/**
* The state service.
*
* @var \Drupal\Core\State\StateInterface
*/
protected $state;
/**
* The logger factory.
*
* @var \Drupal\Core\Logger\LoggerChannelFactoryInterface
*/
protected $loggerFactory;
/**
* Cache of upgrade paths.
*
* @var array
*/
protected $pathCache = [];
/**
* Constructs a new UpgradePathGenerator.
*/
public function __construct(
PatternLearningManager $pattern_learning,
ModuleHandlerInterface $module_handler,
ConfigFactoryInterface $config_factory,
StateInterface $state,
LoggerChannelFactoryInterface $logger_factory
) {
$this->patternLearning = $pattern_learning;
$this->moduleHandler = $module_handler;
$this->configFactory = $config_factory;
$this->state = $state;
$this->loggerFactory = $logger_factory;
}
/**
* Generates an optimal upgrade path for a module.
*
* @param string $module_name
* The name of the module.
* @param string $current_version
* Current version of Drupal core.
* @param string $target_version
* Target version of Drupal core.
*
* @return array
* The generated upgrade path.
*/
public function generateUpgradePath($module_name, $current_version, $target_version) {
$cache_key = "{$module_name}:{$current_version}:{$target_version}";
if (isset($this->pathCache[$cache_key])) {
return $this->pathCache[$cache_key];
}
try {
// Initialize upgrade path
$path = [
'module' => $module_name,
'current_version' => $current_version,
'target_version' => $target_version,
'steps' => [],
'dependencies' => [],
'risks' => [],
'estimated_effort' => 0,
];
// Get module info
$module = $this->moduleHandler->getModule($module_name);
$module_path = $module->getPath();
// Analyze version-specific changes
$version_changes = $this->analyzeVersionChanges($current_version, $target_version);
// Get module dependencies
$dependencies = $this->analyzeDependencies($module_name);
// Generate steps based on patterns and version changes
$steps = $this->generateUpgradeSteps($module_name, $version_changes);
// Optimize the upgrade path
$optimized_steps = $this->optimizeUpgradePath($steps);
// Calculate risks and effort
$risk_assessment = $this->assessRisks($module_name, $optimized_steps);
// Build the final upgrade path
$path['steps'] = $optimized_steps;
$path['dependencies'] = $dependencies;
$path['risks'] = $risk_assessment['risks'];
$path['estimated_effort'] = $risk_assessment['effort'];
$path['metadata'] = [
'generated_at' => time(),
'confidence_score' => $this->calculateConfidenceScore($optimized_steps),
];
// Cache the path
$this->pathCache[$cache_key] = $path;
return $path;
}
catch (\Exception $e) {
$this->loggerFactory->get('ai_upgrade_assistant')->error(
'Failed to generate upgrade path for @module: @error',
[
'@module' => $module_name,
'@error' => $e->getMessage(),
]
);
throw $e;
}
}
/**
* Analyzes version-specific changes between Drupal versions.
*/
protected function analyzeVersionChanges($current_version, $target_version) {
$changes = [];
$versions = $this->getVersionsBetween($current_version, $target_version);
foreach ($versions as $version) {
$changes[$version] = [
'api_changes' => $this->getApiChanges($version),
'deprecated_features' => $this->getDeprecatedFeatures($version),
'new_features' => $this->getNewFeatures($version),
'breaking_changes' => $this->getBreakingChanges($version),
];
}
return $changes;
}
/**
* Gets all versions between two Drupal versions.
*/
protected function getVersionsBetween($start, $end) {
$versions = [];
$major_start = (int) substr($start, 0, strpos($start, '.'));
$major_end = (int) substr($end, 0, strpos($end, '.'));
for ($major = $major_start; $major <= $major_end; $major++) {
$minor_versions = $this->getMinorVersions($major);
foreach ($minor_versions as $version) {
if (version_compare($version, $start, '>=') &&
version_compare($version, $end, '<=')) {
$versions[] = $version;
}
}
}
return $versions;
}
/**
* Gets minor versions for a major Drupal version.
*/
protected function getMinorVersions($major) {
// This could be expanded to fetch from drupal.org API
$versions = [];
switch ($major) {
case 8:
$versions = ['8.8.0', '8.9.0'];
break;
case 9:
$versions = ['9.0.0', '9.1.0', '9.2.0', '9.3.0', '9.4.0', '9.5.0'];
break;
case 10:
$versions = ['10.0.0', '10.1.0'];
break;
}
return $versions;
}
/**
* Gets API changes for a specific version.
*/
protected function getApiChanges($version) {
// This could be expanded to fetch from drupal.org API
$changes = [];
// Example API changes
$api_changes = [
'8.8.0' => [
['type' => 'method', 'old' => 'url()', 'new' => 'toUrl()', 'class' => 'EntityInterface'],
],
'9.0.0' => [
['type' => 'service', 'old' => 'entity.manager', 'new' => 'entity_type.manager'],
],
'10.0.0' => [
['type' => 'function', 'old' => 'drupal_set_message()', 'new' => 'messenger()->addMessage()'],
],
];
return $api_changes[$version] ?? [];
}
/**
* Gets deprecated features for a specific version.
*/
protected function getDeprecatedFeatures($version) {
// This could be expanded to fetch from drupal.org API
$deprecated = [
'8.8.0' => [
'drupal_set_message',
'\Drupal::entityManager',
],
'9.0.0' => [
'SafeMarkup::checkPlain',
'drupal_render',
],
'10.0.0' => [
'file_scan_directory',
'file_prepare_directory',
],
];
return $deprecated[$version] ?? [];
}
/**
* Gets new features for a specific version.
*/
protected function getNewFeatures($version) {
// This could be expanded to fetch from drupal.org API
$features = [
'8.8.0' => [
'Media Library',
'Layout Builder',
],
'9.0.0' => [
'Olivero theme',
'Claro admin theme',
],
'10.0.0' => [
'Decoupled menus',
'JavaScript modernization',
],
];
return $features[$version] ?? [];
}
/**
* Gets breaking changes for a specific version.
*/
protected function getBreakingChanges($version) {
// This could be expanded to fetch from drupal.org API
$changes = [
'8.8.0' => [
'Removed deprecated code from core',
'Updated Symfony dependencies',
],
'9.0.0' => [
'Removed deprecated APIs',
'Updated minimum PHP version',
],
'10.0.0' => [
'Removed jQuery UI',
'Updated minimum PHP version',
],
];
return $changes[$version] ?? [];
}
/**
* Analyzes module dependencies.
*/
protected function analyzeDependencies($module_name) {
$module = $this->moduleHandler->getModule($module_name);
$info = $module->info;
$dependencies = [
'required' => [],
'optional' => [],
'conflicts' => [],
];
if (!empty($info['dependencies'])) {
foreach ($info['dependencies'] as $dependency) {
$dependencies['required'][] = $this->parseDependency($dependency);
}
}
return $dependencies;
}
/**
* Parses a dependency string.
*/
protected function parseDependency($dependency) {
// Format: module_name (>= version)
if (preg_match('/^([a-z0-9_]+)\s*(?:\((.*?)\))?/', $dependency, $matches)) {
return [
'name' => $matches[1],
'constraint' => isset($matches[2]) ? $matches[2] : null,
];
}
return ['name' => $dependency];
}
/**
* Generates upgrade steps based on patterns and version changes.
*/
protected function generateUpgradeSteps($module_name, array $version_changes) {
$steps = [];
foreach ($version_changes as $version => $changes) {
// Add version-specific steps
$steps = array_merge($steps, $this->generateVersionSteps($version, $changes));
// Add pattern-based steps
$pattern_steps = $this->generatePatternSteps($module_name, $version);
$steps = array_merge($steps, $pattern_steps);
}
return $steps;
}
/**
* Generates steps for a specific version.
*/
protected function generateVersionSteps($version, array $changes) {
$steps = [];
// Handle API changes
foreach ($changes['api_changes'] as $change) {
$steps[] = [
'type' => 'api_update',
'version' => $version,
'description' => sprintf(
'Update %s from %s to %s',
$change['type'],
$change['old'],
$change['new']
),
'old' => $change['old'],
'new' => $change['new'],
'automated' => true,
];
}
// Handle deprecated features
foreach ($changes['deprecated_features'] as $feature) {
$steps[] = [
'type' => 'deprecation',
'version' => $version,
'description' => "Remove deprecated feature: {$feature}",
'feature' => $feature,
'automated' => true,
];
}
// Handle breaking changes
foreach ($changes['breaking_changes'] as $change) {
$steps[] = [
'type' => 'breaking_change',
'version' => $version,
'description' => $change,
'automated' => false,
];
}
return $steps;
}
/**
* Generates steps based on learned patterns.
*/
protected function generatePatternSteps($module_name, $version) {
$steps = [];
// Get patterns from the module
$patterns = $this->patternLearning->getModulePatterns($module_name);
foreach ($patterns as $pattern) {
// Get transformation prediction
$prediction = $this->patternLearning->predictTransformation($pattern);
if ($prediction && $prediction['confidence'] > 0.8) {
$steps[] = [
'type' => 'pattern_transformation',
'version' => $version,
'description' => $this->generateStepDescription($prediction),
'pattern' => $pattern,
'transformation' => $prediction['transformation'],
'confidence' => $prediction['confidence'],
'automated' => $prediction['confidence'] > 0.95,
];
}
}
return $steps;
}
/**
* Optimizes the upgrade path.
*/
protected function optimizeUpgradePath(array $steps) {
// Sort steps by dependencies
$steps = $this->sortStepsByDependencies($steps);
// Group related steps
$steps = $this->groupRelatedSteps($steps);
// Prioritize steps
$steps = $this->prioritizeSteps($steps);
return $steps;
}
/**
* Sorts steps by dependencies.
*/
protected function sortStepsByDependencies(array $steps) {
$sorted = [];
$visited = [];
foreach ($steps as $step) {
$this->sortStep($step, $sorted, $visited, $steps);
}
return $sorted;
}
/**
* Helper function for dependency sorting.
*/
protected function sortStep($step, &$sorted, &$visited, $steps) {
$id = $this->getStepId($step);
if (isset($visited[$id])) {
return;
}
$visited[$id] = true;
if (isset($step['dependencies'])) {
foreach ($step['dependencies'] as $dep) {
foreach ($steps as $dep_step) {
if ($this->getStepId($dep_step) === $dep) {
$this->sortStep($dep_step, $sorted, $visited, $steps);
}
}
}
}
$sorted[] = $step;
}
/**
* Gets a unique identifier for a step.
*/
protected function getStepId($step) {
return md5(serialize($step));
}
/**
* Groups related steps together.
*/
protected function groupRelatedSteps(array $steps) {
$groups = [];
$current_group = [];
foreach ($steps as $step) {
if (empty($current_group)) {
$current_group[] = $step;
continue;
}
$last_step = end($current_group);
if ($this->areStepsRelated($last_step, $step)) {
$current_group[] = $step;
}
else {
$groups[] = $current_group;
$current_group = [$step];
}
}
if (!empty($current_group)) {
$groups[] = $current_group;
}
return array_merge(...$groups);
}
/**
* Checks if two steps are related.
*/
protected function areStepsRelated($step1, $step2) {
// Steps are related if they:
// 1. Are of the same type
if ($step1['type'] === $step2['type']) {
return true;
}
// 2. Affect the same file
if (isset($step1['file']) && isset($step2['file']) &&
$step1['file'] === $step2['file']) {
return true;
}
// 3. Are part of the same version upgrade
if (isset($step1['version']) && isset($step2['version']) &&
$step1['version'] === $step2['version']) {
return true;
}
return false;
}
/**
* Prioritizes steps based on importance and risk.
*/
protected function prioritizeSteps(array $steps) {
$priority_map = [
'breaking_change' => 1,
'api_update' => 2,
'deprecation' => 3,
'pattern_transformation' => 4,
];
usort($steps, function ($a, $b) use ($priority_map) {
$priority_a = $priority_map[$a['type']] ?? 999;
$priority_b = $priority_map[$b['type']] ?? 999;
if ($priority_a === $priority_b) {
// If same priority, sort by confidence (if available)
$conf_a = $a['confidence'] ?? 0;
$conf_b = $b['confidence'] ?? 0;
return $conf_b <=> $conf_a;
}
return $priority_a <=> $priority_b;
});
return $steps;
}
/**
* Assesses risks for the upgrade path.
*/
protected function assessRisks($module_name, array $steps) {
$risks = [];
$total_effort = 0;
foreach ($steps as $step) {
$risk = $this->calculateStepRisk($step);
if ($risk['level'] !== 'low') {
$risks[] = $risk;
}
$total_effort += $risk['effort'];
}
return [
'risks' => $risks,
'effort' => $total_effort,
];
}
/**
* Calculates risk for a single step.
*/
protected function calculateStepRisk($step) {
$risk = [
'step' => $step['description'],
'level' => 'low',
'effort' => 1,
'mitigation' => [],
];
switch ($step['type']) {
case 'breaking_change':
$risk['level'] = 'high';
$risk['effort'] = 5;
$risk['mitigation'][] = 'Comprehensive testing required';
$risk['mitigation'][] = 'Create backup before implementing';
break;
case 'api_update':
$risk['level'] = 'medium';
$risk['effort'] = 3;
$risk['mitigation'][] = 'Update all API references';
$risk['mitigation'][] = 'Test affected functionality';
break;
case 'deprecation':
$risk['level'] = 'medium';
$risk['effort'] = 2;
$risk['mitigation'][] = 'Verify replacement functionality';
break;
case 'pattern_transformation':
$confidence = $step['confidence'] ?? 0;
if ($confidence < 0.8) {
$risk['level'] = 'high';
$risk['effort'] = 4;
}
elseif ($confidence < 0.95) {
$risk['level'] = 'medium';
$risk['effort'] = 2;
}
$risk['mitigation'][] = 'Review automated changes';
break;
}
return $risk;
}
/**
* Calculates confidence score for the upgrade path.
*/
protected function calculateConfidenceScore(array $steps) {
if (empty($steps)) {
return 0;
}
$total_confidence = 0;
$weighted_sum = 0;
$total_weight = 0;
foreach ($steps as $step) {
$weight = $this->getStepWeight($step);
$confidence = $step['confidence'] ?? ($step['automated'] ? 0.9 : 0.6);
$weighted_sum += $confidence * $weight;
$total_weight += $weight;
}
return $total_weight > 0 ? $weighted_sum / $total_weight : 0;
}
/**
* Gets weight for a step type.
*/
protected function getStepWeight($step) {
$weights = [
'breaking_change' => 3,
'api_update' => 2,
'deprecation' => 1,
'pattern_transformation' => 2,
];
return $weights[$step['type']] ?? 1;
}
/**
* Generates a description for a pattern transformation step.
*/
protected function generateStepDescription($prediction) {
$transformation = $prediction['transformation'];
return sprintf(
'Transform pattern: %s to %s (Confidence: %d%%)',
$this->formatPattern($transformation['before']),
$this->formatPattern($transformation['after']),
$prediction['confidence'] * 100
);
}
/**
* Formats a pattern for display.
*/
protected function formatPattern($pattern) {
if (is_array($pattern)) {
return json_encode($pattern, JSON_PRETTY_PRINT);
}
return (string) $pattern;
}
}
