com.expediagroup.graphql.apq.extensions.executionInputExtensions.kt Maven / Gradle / Ivy
/*
* Copyright 2022 Expedia, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.expediagroup.graphql.apq.extensions
import com.expediagroup.graphql.apq.provider.AutomaticPersistedQueriesExtension
import graphql.ExecutionInput
import java.math.BigInteger
import java.nio.charset.StandardCharsets
import java.security.MessageDigest
internal const val APQ_EXTENSION_KEY: String = "persistedQuery"
@Suppress("UNCHECKED_CAST")
fun ExecutionInput.getAutomaticPersistedQueriesExtension(): AutomaticPersistedQueriesExtension? =
try {
(this.extensions[APQ_EXTENSION_KEY] as? Map)?.let(::AutomaticPersistedQueriesExtension)
} catch (e: NoSuchElementException) {
// could not create persistedQuery extension
null
}
fun ExecutionInput.getQueryId(): String {
val messageDigest = MessageDigest.getInstance("SHA-256")
return String.format(
"%064x",
BigInteger(1, messageDigest.digest(this.query.toByteArray(StandardCharsets.UTF_8)))
)
}
fun ExecutionInput.isAutomaticPersistedQueriesExtensionInvalid(
extension: AutomaticPersistedQueriesExtension
): Boolean =
!this.getQueryId().equals(extension.sha256Hash, ignoreCase = true)