ratpack.config.internal.DefaultConfigDataBuilder.java Source code

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Here is the source code for ratpack.config.internal.DefaultConfigDataBuilder.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;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.guava.GuavaModule;
import com.fasterxml.jackson.datatype.jdk7.Jdk7Module;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
import com.fasterxml.jackson.datatype.jsr310.JSR310Module;
import com.google.common.collect.ImmutableList;
import com.google.common.io.ByteSource;
import com.google.common.io.Resources;
import ratpack.config.ConfigData;
import ratpack.config.ConfigDataBuilder;
import ratpack.config.ConfigSource;
import ratpack.config.EnvironmentParser;
import ratpack.config.internal.module.ConfigModule;
import ratpack.config.internal.source.*;
import ratpack.func.Action;
import ratpack.func.Function;
import ratpack.server.internal.ServerEnvironment;
import ratpack.util.Exceptions;
import ratpack.util.internal.Paths2;

import java.net.URL;
import java.nio.file.Path;
import java.util.Map;
import java.util.Optional;
import java.util.Properties;

public class DefaultConfigDataBuilder implements ConfigDataBuilder {
    private final ImmutableList.Builder<ConfigSource> sources = ImmutableList.builder();
    private final ServerEnvironment serverEnvironment;
    private final ObjectMapper objectMapper;
    private Action<? super Throwable> errorHandler = Action.throwException();

    public DefaultConfigDataBuilder(ServerEnvironment serverEnvironment) {
        this(serverEnvironment, newDefaultObjectMapper(serverEnvironment));
    }

    public DefaultConfigDataBuilder(ServerEnvironment serverEnvironment, ObjectMapper objectMapper) {
        this.serverEnvironment = serverEnvironment;
        this.objectMapper = objectMapper;
    }

    @Override
    public ConfigDataBuilder add(ConfigSource configSource) {
        sources.add(new ErrorHandlingConfigSource(configSource, errorHandler));
        return this;
    }

    @Override
    public ConfigDataBuilder configureObjectMapper(Action<ObjectMapper> action) {
        try {
            action.execute(objectMapper);
        } catch (Exception ex) {
            throw Exceptions.uncheck(ex);
        }
        return this;
    }

    @Override
    public ConfigDataBuilder env() {
        return add(new EnvironmentConfigSource(serverEnvironment));
    }

    @Override
    public ConfigDataBuilder env(String prefix) {
        return add(new EnvironmentConfigSource(serverEnvironment, prefix));
    }

    @Override
    public ConfigDataBuilder env(String prefix, Function<String, String> mapFunc) {
        return add(new EnvironmentConfigSource(serverEnvironment, prefix, mapFunc));
    }

    @Override
    public ConfigDataBuilder env(EnvironmentParser environmentParser) {
        return add(new EnvironmentConfigSource(serverEnvironment, environmentParser));
    }

    @Override
    public ConfigDataBuilder json(ByteSource byteSource) {
        return add(new JsonConfigSource(byteSource));
    }

    @Override
    public ConfigDataBuilder json(Path path) {
        return add(new JsonConfigSource(path));
    }

    @Override
    public ConfigDataBuilder json(URL url) {
        return add(new JsonConfigSource(url));
    }

    @Override
    public ConfigDataBuilder props(ByteSource byteSource) {
        return add(new ByteSourcePropertiesConfigSource(Optional.empty(), byteSource));
    }

    @Override
    public ConfigDataBuilder props(Path path) {
        return add(new ByteSourcePropertiesConfigSource(Optional.empty(), Paths2.asByteSource(path)));
    }

    @Override
    public ConfigDataBuilder props(Properties properties) {
        return add(new PropertiesConfigSource(Optional.empty(), properties));
    }

    @Override
    public ConfigDataBuilder props(URL url) {
        return add(new ByteSourcePropertiesConfigSource(Optional.empty(), Resources.asByteSource(url)));
    }

    @Override
    public ConfigDataBuilder props(Map<String, String> map) {
        return add(new MapConfigSource(Optional.empty(), map));
    }

    @Override
    public ConfigDataBuilder sysProps() {
        return sysProps(DEFAULT_PROP_PREFIX);
    }

    @Override
    public ConfigDataBuilder sysProps(String prefix) {
        return add(new PropertiesConfigSource(Optional.of(prefix), serverEnvironment.getProperties()));
    }

    @Override
    public ConfigDataBuilder yaml(ByteSource byteSource) {
        return add(new YamlConfigSource(byteSource));
    }

    @Override
    public ConfigDataBuilder yaml(Path path) {
        return add(new YamlConfigSource(path));
    }

    @Override
    public ConfigDataBuilder yaml(URL url) {
        return add(new YamlConfigSource(url));
    }

    @Override
    public ConfigDataBuilder onError(Action<? super Throwable> errorHandler) {
        this.errorHandler = errorHandler;
        return this;
    }

    public static ObjectMapper newDefaultObjectMapper(ServerEnvironment serverEnvironment) {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
        objectMapper.registerModule(new Jdk7Module());
        objectMapper.registerModule(new Jdk8Module());
        objectMapper.registerModule(new GuavaModule());
        objectMapper.registerModule(new JSR310Module());
        objectMapper.registerModule(new ConfigModule(serverEnvironment));
        JsonFactory factory = objectMapper.getFactory();
        factory.enable(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES);
        factory.enable(JsonParser.Feature.ALLOW_SINGLE_QUOTES);
        return objectMapper;
    }

    @Override
    public ObjectMapper getObjectMapper() {
        return objectMapper;
    }

    @Override
    public ImmutableList<ConfigSource> getConfigSources() {
        return sources.build();
    }

    @Override
    public ConfigData build() {
        return new DefaultConfigData(getObjectMapper(), getConfigSources());
    }
}