io.scalecube.config.source.SystemEnvironmentConfigSource Maven / Gradle / Ivy

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package io.scalecube.config.source;

import io.scalecube.config.ConfigProperty;
import java.util.Map;
import java.util.TreeMap;

public final class SystemEnvironmentConfigSource implements ConfigSource {

  private Map loadedConfig;

  @Override
  public Map loadConfig() {
    if (loadedConfig != null) {
      return loadedConfig;
    }

    Map env = System.getenv();
    Map result = new TreeMap<>();

    for (Map.Entry entry : env.entrySet()) {
      String propName = entry.getKey();
      result.put(propName, LoadedConfigProperty.forNameAndValue(propName, entry.getValue()));
    }

    return loadedConfig = result;
  }
}