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efrain |
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<?php
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namespace Aws\S3\Crypto;
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use Aws\Crypto\MaterialsProvider;
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use Aws\Crypto\MetadataEnvelope;
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use Aws\Crypto\MetadataStrategyInterface;
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trait CryptoParamsTrait
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{
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protected function getMaterialsProvider(array $args)
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{
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if ($args['@MaterialsProvider'] instanceof MaterialsProvider) {
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return $args['@MaterialsProvider'];
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}
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throw new \InvalidArgumentException('An instance of MaterialsProvider'
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. ' must be passed in the "MaterialsProvider" field.');
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}
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protected function getInstructionFileSuffix(array $args)
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{
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return !empty($args['@InstructionFileSuffix'])
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? $args['@InstructionFileSuffix']
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: $this->instructionFileSuffix;
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}
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protected function determineGetObjectStrategy(
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$result,
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$instructionFileSuffix
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) {
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if (isset($result['Metadata'][MetadataEnvelope::CONTENT_KEY_V2_HEADER])) {
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return new HeadersMetadataStrategy();
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}
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return new InstructionFileMetadataStrategy(
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$this->client,
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$instructionFileSuffix
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);
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}
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protected function getMetadataStrategy(array $args, $instructionFileSuffix)
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{
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if (!empty($args['@MetadataStrategy'])) {
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if ($args['@MetadataStrategy'] instanceof MetadataStrategyInterface) {
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return $args['@MetadataStrategy'];
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}
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if (is_string($args['@MetadataStrategy'])) {
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switch ($args['@MetadataStrategy']) {
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case HeadersMetadataStrategy::class:
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return new HeadersMetadataStrategy();
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case InstructionFileMetadataStrategy::class:
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return new InstructionFileMetadataStrategy(
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$this->client,
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$instructionFileSuffix
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);
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default:
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throw new \InvalidArgumentException('Could not match the'
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. ' specified string in "MetadataStrategy" to a'
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. ' predefined strategy.');
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}
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} else {
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throw new \InvalidArgumentException('The metadata strategy that'
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. ' was passed to "MetadataStrategy" was unrecognized.');
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}
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} elseif ($instructionFileSuffix) {
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return new InstructionFileMetadataStrategy(
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$this->client,
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$instructionFileSuffix
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);
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}
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return null;
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}
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}
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