/*
 * Copyright (c) 2014 Red Hat, Inc. and others
 *
 * Red Hat licenses this file to you 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
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package io.vertx.config.yaml;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
import io.vertx.config.spi.ConfigProcessor;
import io.vertx.core.AsyncResult;
import io.vertx.core.Future;
import io.vertx.core.Handler;
import io.vertx.core.Vertx;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.json.JsonObject;

A processor using Jackson and SnakeYaml to read Yaml files.
Author:Clement Escoffier
/** * A processor using Jackson and SnakeYaml to read Yaml files. * * @author <a href="http://escoffier.me">Clement Escoffier</a> */
public class YamlProcessor implements ConfigProcessor { public static ObjectMapper YAML_MAPPER = new YAMLMapper(); @Override public String name() { return "yaml"; } @Override public void process(Vertx vertx, JsonObject configuration, Buffer input, Handler<AsyncResult<JsonObject>> handler) { if (input.length() == 0) { // the parser does not support empty files, which should be managed to be homogeneous handler.handle(Future.succeededFuture(new JsonObject())); return; } // Use executeBlocking even if the bytes are in memory vertx.executeBlocking( future -> { try { JsonNode root = YAML_MAPPER.readTree(input.toString("utf-8")); JsonObject json = new JsonObject(root.toString()); future.complete(json); } catch (Exception e) { future.fail(e); } }, handler ); } }