StructuredConfigSource.java

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package dev.rafex.ether.config.sources;
 
/*-
 * #%L
 * ether-config
 * %%
 * Copyright (C) 2025 - 2026 Raúl Eduardo González Argote
 * %%
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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import java.io.IOException;
import java.nio.file.Path;
import java.util.Map;
 
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.dataformat.toml.TomlMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 
import dev.rafex.ether.config.internal.StructuredConfigSupport;
 
abstract class StructuredConfigSource extends MapConfigSource {
 
    private static final TypeReference<Map<String, Object>> MAP_TYPE = new TypeReference<>() {
    };
 
    StructuredConfigSource(final String name, final Map<String, String> values) {
        super(name, values);
    }
 
    static Map<String, String> loadJson(final Path path) throws IOException {
        return load(path, mapper());
    }
 
    static Map<String, String> loadYaml(final Path path) throws IOException {
        return load(path, YAMLMapper.builder().addModule(new JavaTimeModule()).build());
    }
 
    static Map<String, String> loadToml(final Path path) throws IOException {
        return load(path, TomlMapper.builder().addModule(new JavaTimeModule()).build());
    }
 
    private static Map<String, String> load(final Path path, final ObjectMapper mapper) throws IOException {
        final Map<String, Object> tree = mapper.readValue(path.toFile(), MAP_TYPE);
        return StructuredConfigSupport.flatten(tree);
    }
 
    private static ObjectMapper mapper() {
        return new ObjectMapper().registerModule(new JavaTimeModule())
                .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    }
}