protected JsonNode loadConfiguration(Map<String, String> properties, Map<String, String> vars) {
// hopefully sharing the mapper between parsers is safe... Does it
// change the state during parse?
ObjectMapper textToJsonMapper = jacksonService.newObjectMapper();
Map<ParserType, Function<InputStream, Optional<JsonNode>>> parsers =
new EnumMap<>(ParserType.class);
parsers.put(ParserType.YAML, new JsonNodeYamlParser(textToJsonMapper));
parsers.put(ParserType.JSON, new JsonNodeJsonParser(textToJsonMapper));
Function<URL, Optional<JsonNode>> parser = new MultiFormatJsonNodeParser(parsers, bootLogger);
BinaryOperator<JsonNode> singleConfigMerger = new InPlaceLeftHandMerger(bootLogger);
Function<JsonNode, JsonNode> overrider = new InPlaceMapOverrider(properties, true, '.');
if (!vars.isEmpty()) {
overrider = overrider.andThen(new InPlaceMapOverrider(vars, false, '_'));
}
return JsonNodeConfigurationBuilder.builder()
.parser(parser)
.merger(singleConfigMerger)
.resources(configurationSource)
.overrider(overrider)
.build();
}
@Override
public ConfigurationFactory get() {
Map<String, String> vars = environment.frameworkVariables();
Map<String, String> properties = environment.frameworkProperties();
JsonNode rootNode = loadConfiguration(properties, vars);
ObjectMapper jsonToObjectMapper = jacksonService.newObjectMapper();
if (!vars.isEmpty()) {
// switching to slower CI strategy for mapping properties...
jsonToObjectMapper.configure(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES, true);
}
return new JsonNodeConfigurationFactory(rootNode, jsonToObjectMapper);
}
