SchemaRegistryStubController.java

SchemaRegistryStubController.java

/*
 * Copyright 2017-2019 original authors
 *
 * 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.company

import groovy.util.logging.Slf4j
import io.micronaut.http.HttpResponse
import io.micronaut.http.annotation.Body
import io.micronaut.http.annotation.Controller
import io.micronaut.http.annotation.Get
import io.micronaut.http.annotation.Post

import javax.validation.constraints.NotBlank

@Controller
@Slf4j
class SchemaRegistryStubController {

    private Map<String, Schema> schemas = new HashMap<>()

    /**
    * Schemas will self register with controller
    */
    @Post(value = "/subjects/{subject}/versions", consumes = "*/*")
    HttpResponse<String> registerSchema(@NotBlank String subject, @Body String body) {
        log.info "~~~~~~ Schema Stub ~~~~~~~~~"
        log.info "Registering schema for: $subject"
        int id = schemas.size() + 1
        schemas.putIfAbsent(subject, new Schema(id, body))
        return HttpResponse.ok("{\"id\":" + schemas.get(subject).id + "}")
    }

    @Get(value = "/schemas/ids/{id}", consumes = "*/*")
    HttpResponse<String> getSchema(Integer id) {
        log.info "~~~~~~ Schema Stub ~~~~~~~~~"
        log.info "Getting schema for: $id"

        return HttpResponse.ok(
                (schemas
                        .values()
                        .find { schema -> (schema?.id == id) })?.schema
                        ?: "{\"schema\":\"\\\"\\\"\"}")
    }

    class Schema {
        int id
        String schema

        Schema(final int id, final String schema) {
            this.id = id
            this.schema = schema
        }
    }
}