@Override
public Object readFrom(
Class<Object> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream)
throws IOException, WebApplicationException {
boolean validating = false;
for (Annotation annotation : annotations) {
validating = validating || (annotation.annotationType() == Valid.class);
}
final Object value = json.readValue(entityStream, genericType);
if (validating) {
final ImmutableList<String> errors = VALIDATOR.validate(value);
if (!errors.isEmpty()) {
final StringBuilder msg =
new StringBuilder("The request entity had the following errors:\n");
for (String error : errors) {
msg.append(" * ").append(error).append('\n');
}
throw new WebApplicationException(
Response.status(UNPROCESSABLE_ENTITY)
.entity(msg.toString())
.type(MediaType.TEXT_PLAIN_TYPE)
.build());
}
}
return value;
}
public T build(File file) throws IOException, ConfigurationException {
final JsonNode node = parse(file);
for (Map.Entry<Object, Object> pref : System.getProperties().entrySet()) {
final String prefName = (String) pref.getKey();
if (prefName.startsWith(PROPERTY_PREFIX)) {
final String configName = prefName.substring(PROPERTY_PREFIX.length());
addOverride(node, configName, System.getProperty(prefName));
}
}
final T config = json.readValue(node, klass);
validate(file, config);
return config;
}
private JsonNode parse(File file) throws IOException {
if (file.getName().endsWith(".yaml") || file.getName().endsWith(".yml")) {
return json.readYamlValue(file, JsonNode.class);
}
return json.readValue(file, JsonNode.class);
}