io.scalecube.config.MultimapConfigPropertyImpl Maven / Gradle / Ivy
package io.scalecube.config;
import io.scalecube.config.source.LoadedConfigProperty;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Function;
class MultimapConfigPropertyImpl extends AbstractSimpleConfigProperty>>
implements MultimapConfigProperty {
static Function>> toMultimapPropertyParser(
Function valueParser) {
return str -> {
Map> result = new HashMap<>();
String[] tokens = str.split(",");
String key = null;
for (String token : tokens) {
String[] entry = token.split("=", 2);
String value;
if (entry.length > 1) { // entry ["key", "value"]
key = entry[0];
value = entry[1];
} else { // only value ["value"]
value = entry[0];
}
if (key != null) {
result.computeIfAbsent(key, k -> new ArrayList<>()).add(valueParser.apply(value));
}
}
return result;
};
}
MultimapConfigPropertyImpl(
String name,
Map propertyMap,
Map> propertyCallbackMap,
Function valueParser) {
super(
name,
getMapPropertyClass(valueParser),
propertyMap,
propertyCallbackMap,
toMultimapPropertyParser(valueParser));
}
@Override
public Map> value(Map> defaultValue) {
return value().orElse(defaultValue);
}
@Override
public Map> valueOrThrow() {
return value().orElseThrow(this::newNoSuchElementException);
}
private static Class getMapPropertyClass(Function valueParser) {
Class result = null;
if (ConfigRegistryImpl.STRING_PARSER == valueParser) {
result = StringMultimap.class;
} else if (ConfigRegistryImpl.DOUBLE_PARSER == valueParser) {
result = DoubleMultimap.class;
} else if (ConfigRegistryImpl.LONG_PARSER == valueParser) {
result = LongMultimap.class;
} else if (ConfigRegistryImpl.INT_PARSER == valueParser) {
result = IntMultimap.class;
} else if (ConfigRegistryImpl.DURATION_PARSER == valueParser) {
result = DurationMultimap.class;
}
if (result == null) {
throw new IllegalArgumentException(
"MultimapConfigPropertyImpl: unsupported multimap valueParser " + valueParser);
}
return result;
}
private static class StringMultimap {}
private static class DoubleMultimap {}
private static class LongMultimap {}
private static class IntMultimap {}
private static class DurationMultimap {}
}