77 lines
2.5 KiB
PHP
77 lines
2.5 KiB
PHP
<?php
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namespace Icinga\Module\Director\PropertyModifier;
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use Icinga\Exception\InvalidPropertyException;
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use Icinga\Module\Director\Hook\PropertyModifierHook;
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use Icinga\Module\Director\Web\Form\QuickForm;
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class PropertyModifierJsonDecode extends PropertyModifierHook
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{
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public static function addSettingsFormFields(QuickForm $form)
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{
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$form->addElement('select', 'on_failure', array(
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'label' => 'On failure',
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'description' => $form->translate(
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'What should we do in case we are unable to decode the given string?'
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),
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'multiOptions' => $form->optionalEnum(array(
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'null' => $form->translate('Set no value (null)'),
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'keep' => $form->translate('Keep the JSON string as is'),
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'fail' => $form->translate('Let the whole import run fail'),
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)),
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'required' => true,
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));
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}
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public function getName()
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{
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return 'Decode a JSON string';
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}
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public function transform($value)
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{
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if (null === $value) {
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return $value;
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}
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$decoded = @json_decode($value);
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if ($decoded === null && JSON_ERROR_NONE !== json_last_error()) {
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switch ($this->getSetting('on_failure')) {
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case 'null':
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return null;
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case 'keep':
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return $value;
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case 'fail':
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default:
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throw new InvalidPropertyException(
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'JSON decoding failed with "%s" for %s',
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$this->getLastJsonError(),
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substr($value, 0, 128)
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);
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}
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}
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return $decoded;
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}
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// TODO: just return json_last_error_msg() for PHP >= 5.5.0
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protected function getLastJsonError()
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{
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switch (json_last_error()) {
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case JSON_ERROR_DEPTH:
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return 'The maximum stack depth has been exceeded';
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case JSON_ERROR_CTRL_CHAR:
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return 'Control character error, possibly incorrectly encoded';
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case JSON_ERROR_STATE_MISMATCH:
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return 'Invalid or malformed JSON';
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case JSON_ERROR_SYNTAX:
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return 'Syntax error';
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case JSON_ERROR_UTF8:
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return 'Malformed UTF-8 characters, possibly incorrectly encoded';
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default:
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return 'An error occured when parsing a JSON string';
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}
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}
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}
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