com.netflix.graphql.dgs.webmvc.autoconfigure.DgsWebMvcConfigurationProperties.kt Maven / Gradle / Ivy

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/*
 * Copyright 2021 Netflix, 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
 *
 *    http://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.netflix.graphql.dgs.webmvc.autoconfigure

import org.springframework.boot.context.properties.ConfigurationProperties
import org.springframework.boot.context.properties.ConstructorBinding
import org.springframework.boot.context.properties.NestedConfigurationProperty
import org.springframework.boot.context.properties.bind.DefaultValue
import javax.annotation.PostConstruct

/**
 * Configuration properties for DGS web controllers.
 */
@ConstructorBinding
@ConfigurationProperties(prefix = "dgs.graphql")
@Suppress("ConfigurationProperties")
data class DgsWebMvcConfigurationProperties(
    /** Path to the GraphQL endpoint without trailing slash. */
    @DefaultValue("/graphql") var path: String = "/graphql",
    @NestedConfigurationProperty var graphiql: DgsGraphiQLConfigurationProperties = DgsGraphiQLConfigurationProperties(),
    @NestedConfigurationProperty var schemaJson: DgsSchemaJsonConfigurationProperties = DgsSchemaJsonConfigurationProperties()
) {
    /**
     * Configuration properties for the schema-json endpoint.
     */
    data class DgsGraphiQLConfigurationProperties(
        /** Path to the GraphiQL endpoint without trailing slash. */
        @DefaultValue("/graphiql") var path: String = "/graphiql"
    )
    /**
     * Configuration properties for the schema-json endpoint.
     */
    data class DgsSchemaJsonConfigurationProperties(
        /** Path to the schema-json endpoint without trailing slash. */
        @DefaultValue("/schema.json") var path: String = "/schema.json"
    )

    @PostConstruct
    fun validatePaths() {
        validatePath(this.path, "dgs.graphql.path")
        validatePath(this.graphiql.path, "dgs.graphql.graphiql.path")
        validatePath(this.schemaJson.path, "dgs.graphql.schema-json.path")
    }

    private fun validatePath(path: String, pathProperty: String) {
        if (path != "/" && (!path.startsWith("/") || path.endsWith("/"))) {
            throw IllegalArgumentException("$pathProperty must start with '/' and not end with '/' but was '$path'")
        }
    }
}