ratpack.config.internal.source.JacksonConfigSource.java Source code

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Here is the source code for ratpack.config.internal.source.JacksonConfigSource.java

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/*
 * Copyright 2015 the original author or 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 ratpack.config.internal.source;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.io.ByteSource;
import com.google.common.io.Resources;
import ratpack.config.ConfigSource;
import ratpack.util.internal.Paths2;

import java.io.InputStream;
import java.net.URL;
import java.nio.file.Path;

public abstract class JacksonConfigSource implements ConfigSource {
    private final ByteSource byteSource;

    public JacksonConfigSource(Path path) {
        this(Paths2.asByteSource(path));
    }

    public JacksonConfigSource(URL url) {
        this(Resources.asByteSource(url));
    }

    public JacksonConfigSource(ByteSource byteSource) {
        this.byteSource = byteSource;
    }

    @Override
    public ObjectNode loadConfigData(ObjectMapper objectMapper) throws Exception {
        try (InputStream inputStream = byteSource.openStream()) {
            JsonParser parser = getFactory(objectMapper).createParser(inputStream);
            return objectMapper.readTree(parser);
        }
    }

    protected abstract JsonFactory getFactory(ObjectMapper objectMapper);
}