90 lines
3.3 KiB
PHP
90 lines
3.3 KiB
PHP
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<?php
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namespace Guzzle\Service\Builder;
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use Guzzle\Service\AbstractConfigLoader;
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use Guzzle\Service\Exception\ServiceNotFoundException;
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/**
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* Service builder config loader
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*/
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class ServiceBuilderLoader extends AbstractConfigLoader
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{
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protected function build($config, array $options)
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{
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// A service builder class can be specified in the class field
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$class = !empty($config['class']) ? $config['class'] : __NAMESPACE__ . '\\ServiceBuilder';
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// Account for old style configs that do not have a services array
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$services = isset($config['services']) ? $config['services'] : $config;
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// Validate the configuration and handle extensions
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foreach ($services as $name => &$service) {
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$service['params'] = isset($service['params']) ? $service['params'] : array();
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// Check if this client builder extends another client
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if (!empty($service['extends'])) {
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// Make sure that the service it's extending has been defined
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if (!isset($services[$service['extends']])) {
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throw new ServiceNotFoundException(
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"{$name} is trying to extend a non-existent service: {$service['extends']}"
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);
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}
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$extended = &$services[$service['extends']];
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// Use the correct class attribute
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if (empty($service['class'])) {
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$service['class'] = isset($extended['class']) ? $extended['class'] : '';
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}
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if ($extendsParams = isset($extended['params']) ? $extended['params'] : false) {
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$service['params'] = $service['params'] + $extendsParams;
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}
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}
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// Overwrite default values with global parameter values
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if (!empty($options)) {
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$service['params'] = $options + $service['params'];
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}
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$service['class'] = isset($service['class']) ? $service['class'] : '';
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}
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return new $class($services);
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}
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protected function mergeData(array $a, array $b)
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{
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$result = $b + $a;
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// Merge services using a recursive union of arrays
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if (isset($a['services']) && $b['services']) {
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// Get a union of the services of the two arrays
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$result['services'] = $b['services'] + $a['services'];
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// Merge each service in using a union of the two arrays
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foreach ($result['services'] as $name => &$service) {
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// By default, services completely override a previously defined service unless it extends itself
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if (isset($a['services'][$name]['extends'])
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&& isset($b['services'][$name]['extends'])
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&& $b['services'][$name]['extends'] == $name
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) {
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$service += $a['services'][$name];
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// Use the `extends` attribute of the parent
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$service['extends'] = $a['services'][$name]['extends'];
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// Merge parameters using a union if both have parameters
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if (isset($a['services'][$name]['params'])) {
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$service['params'] += $a['services'][$name]['params'];
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}
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}
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}
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}
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return $result;
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}
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}
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