fish.payara.nucleus.microprofile.config.spi.PayaraConfig Maven / Gradle / Ivy
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
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* https://github.com/payara/Payara/blob/master/LICENSE.txt
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* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
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package fish.payara.nucleus.microprofile.config.spi;
import fish.payara.nucleus.microprofile.config.converters.CommonSenseConverter;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Optional;
import java.util.Set;
import org.eclipse.microprofile.config.Config;
import org.eclipse.microprofile.config.spi.ConfigSource;
import org.eclipse.microprofile.config.spi.Converter;
/**
*
* @author Steve Millidge (Payara Foundation)
*/
public class PayaraConfig implements Config {
private final List configSources;
private final Map converters;
public PayaraConfig(List configSources, Map convertersMap) {
this.configSources = configSources;
this.converters = new HashMap<>();
this.converters.putAll(convertersMap);
Collections.sort(configSources, new ConfigSourceComparator());
}
@Override
public T getValue(String propertyName, Class propertyType) {
String result = getValue(propertyName);
if (result == null) {
throw new NoSuchElementException("Unable to find property with name " + propertyName);
}
return convertString(result, propertyType);
}
@Override
public Optional getOptionalValue(String propertyName, Class propertyType) {
String strValue = getValue(propertyName);
if(String.class.equals(propertyType)) {
return (Optional) Optional.ofNullable(strValue);
}
Converter converter = getConverter(propertyType);
if (converter == null) {
throw new IllegalArgumentException("No converter for class " + propertyType);
}
return Optional.ofNullable(converter.convert(strValue));
}
@Override
public Iterable getPropertyNames() {
LinkedList result = new LinkedList<>();
for (ConfigSource configSource : configSources) {
result.addAll(configSource.getProperties().keySet());
}
return result;
}
@Override
public Iterable getConfigSources() {
return configSources;
}
public Set getConverterTypes() {
return converters.keySet();
}
public List getListValues(String propertyName, String defaultValue, Class elementType) {
String value = getValue(propertyName);
if (value == null) {
value = defaultValue;
}
if (value == null) {
throw new NoSuchElementException("Unable to find property with name " + propertyName);
}
String keys[] = splitValue(value);
List result = new ArrayList<>(keys.length);
for (String key : keys) {
result.add(convertString(key, elementType));
}
return result;
}
public Set getSetValues(String propertyName, String defaultValue, Class elementType) {
String value = getValue(propertyName);
if (value == null) {
value = defaultValue;
}
if (value == null) {
throw new NoSuchElementException("Unable to find property with name " + propertyName);
}
String keys[] = splitValue(value);
Set result = new HashSet<>(keys.length);
for (String key : keys) {
result.add(convertString(key, elementType));
}
return result;
}
public T getValue(String propertyName, String defaultValue, Class propertyType) {
String result = getValue(propertyName);
if (result == null) {
result = defaultValue;
}
if (result == null) {
throw new NoSuchElementException("Unable to find property with name " + propertyName);
}
return convertString(result, propertyType);
}
private String getValue(String propertyName) {
String result = null;
for (ConfigSource configSource : configSources) {
result = configSource.getValue(propertyName);
if (result != null) {
break;
}
}
return result;
}
private Converter getConverter(Class propertyType) {
Class type = propertyType;
if (type.equals(int.class)) {
type = Integer.class;
} else if (type.equals(long.class)) {
type = Long.class;
} else if (type.equals(double.class)) {
type = Double.class;
} else if (type.equals(float.class)) {
type = Float.class;
} else if (type.equals(boolean.class)) {
type = Boolean.class;
}
Converter converter = converters.get(type);
if (converter == null) {
// search for a matching raw type
for (Type type1 : converters.keySet()) {
if (type1 instanceof ParameterizedType) {
ParameterizedType ptype = (ParameterizedType)type1;
if (ptype.getRawType().equals(propertyType)) {
converter = converters.get(type1);
break;
}
}
}
}
if (converter == null) {
// see if a common sense converter can be created
boolean commonSense = true;
try {
Method m = propertyType.getMethod("of", String.class);
converter = (Converter) new CommonSenseConverter(m);
converters.put(propertyType, converter);
return converter;
} catch (NoSuchMethodException | SecurityException ex) {
try {
Method m = propertyType.getMethod("valueOf",String.class);
converter = (Converter) new CommonSenseConverter(m);
converters.put(propertyType, converter);
return converter;
} catch (NoSuchMethodException | SecurityException ex1) {
try {
Constructor c = propertyType.getConstructor(String.class);
converter = (Converter) new CommonSenseConverter(c);
converters.put(propertyType, converter);
return converter;
} catch (NoSuchMethodException | SecurityException ex2) {
try {
Method m = propertyType.getMethod("parse", CharSequence.class);
converter = (Converter) new CommonSenseConverter(m);
converters.put(propertyType, converter);
return converter;
} catch (NoSuchMethodException | SecurityException ex3) {
commonSense = false;
}
}
}
}
}
if (converter == null) {
throw new IllegalArgumentException("Unable to convert value to type " + propertyType.getCanonicalName());
}
return converter;
}
private T convertString(String value, Class propertyType) {
// if it is an array convert arrays
if (propertyType.isArray()) {
// find converter for the array type
Class componentClazz = propertyType.getComponentType();
Converter converter = getConverter(componentClazz);
// array convert
String keys[] = splitValue(value);
Object arrayResult = Array.newInstance(componentClazz, keys.length);
for (int i = 0; i < keys.length; i++) {
Array.set(arrayResult, i, converter.convert(keys[i]));
}
return (T) arrayResult;
} else {
// find a converter
Converter converter = getConverter(propertyType);
if (converter == null) {
throw new IllegalArgumentException("No converter for class " + propertyType);
}
return converter.convert(value);
}
}
private String[] splitValue(String value) {
String keys[] = value.split("(? © 2015 - 2025 Weber Informatics LLC | Privacy Policy