/
JSON.java
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/
JSON.java
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package org.rapidoid.data;
import com.fasterxml.jackson.core.Base64Variants;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.core.util.DefaultIndenter;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.DeserializerCache;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.DefaultSerializerProvider;
import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
import org.rapidoid.RapidoidThing;
import org.rapidoid.cls.Cls;
import org.rapidoid.env.Env;
import org.rapidoid.log.Log;
import org.rapidoid.u.U;
import org.rapidoid.util.Msc;
import org.rapidoid.util.TUUID;
import java.io.OutputStream;
import java.util.Map;
/*
* #%L
* rapidoid-commons
* %%
* Copyright (C) 2014 - 2017 Nikolche Mihajlovski and contributors
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
/**
* @author Nikolche Mihajlovski
* @since 2.0.0
*/
public class JSON extends RapidoidThing {
public static final ObjectMapper MAPPER = newMapper();
public static final ObjectMapper PRETTY_MAPPER = prettyMapper();
public static ObjectMapper newMapper() {
ObjectMapper mapper = new ObjectMapper();
mapper.setBase64Variant(Base64Variants.MODIFIED_FOR_URL);
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
mapper.registerModule(tuuidModule());
if (!Env.dev()) {
mapper.registerModule(new AfterburnerModule());
}
return mapper;
}
private static ObjectMapper prettyMapper() {
ObjectMapper mapper = new ObjectMapper();
mapper.setBase64Variant(Base64Variants.MODIFIED_FOR_URL);
mapper.configure(SerializationFeature.INDENT_OUTPUT, true);
mapper.registerModule(tuuidModule());
if (!Env.dev()) {
mapper.registerModule(new AfterburnerModule());
}
DefaultPrettyPrinter pp = new DefaultPrettyPrinter();
pp = pp.withObjectIndenter(new DefaultIndenter(" ", "\n"));
mapper.setDefaultPrettyPrinter(pp);
return mapper;
}
public static SimpleModule tuuidModule() {
SimpleModule tuuidModule = new SimpleModule("TUUIDModule", new Version(1, 0, 0, null, "org.rapidoid", "rapidoid-commons"));
tuuidModule.addSerializer(TUUID.class, new TUUIDSerializer());
tuuidModule.addDeserializer(TUUID.class, new TUUIDDeserializer());
return tuuidModule;
}
public static synchronized void reset() {
for (ObjectMapper mapper : U.list(MAPPER, PRETTY_MAPPER)) {
SerializerProvider serializerProvider = mapper.getSerializerProvider();
if (serializerProvider instanceof DefaultSerializerProvider) {
DefaultSerializerProvider provider = (DefaultSerializerProvider) serializerProvider;
provider.flushCachedSerializers();
} else {
Log.warn("Couldn't clear the cache of Jackson serializers!", "class", Cls.of(serializerProvider));
}
DeserializationContext deserializationContext = mapper.getDeserializationContext();
Object cache = Cls.getFieldValue(deserializationContext, "_cache");
if (cache instanceof DeserializerCache) {
DeserializerCache deserializerCache = (DeserializerCache) cache;
deserializerCache.flushCachedDeserializers();
} else {
Log.warn("Couldn't clear the cache of Jackson deserializers!", "class", Cls.of(cache));
}
}
}
public static String stringify(Object value) {
try {
return MAPPER.writeValueAsString(value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static byte[] stringifyToBytes(Object value) {
try {
return MAPPER.writeValueAsBytes(value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static void stringify(Object value, OutputStream out) {
try {
MAPPER.writeValue(out, value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static String prettify(Object value) {
try {
return PRETTY_MAPPER.writeValueAsString(value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static void prettify(Object value, OutputStream out) {
try {
PRETTY_MAPPER.writeValue(out, value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@SuppressWarnings("unchecked")
public static <T> T parse(byte[] json) {
try {
return (T) MAPPER.readValue(json, Object.class);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@SuppressWarnings("unchecked")
public static <T> T parse(String json) {
try {
return (T) MAPPER.readValue(json, Object.class);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static <T> T parse(String json, Class<T> valueType) {
try {
return MAPPER.readValue(json, valueType);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static <T> T parse(byte[] json, Class<T> valueType) {
try {
return MAPPER.readValue(json, valueType);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static <T> T parse(String json, TypeReference<T> valueType) {
try {
return MAPPER.readValue(json, valueType);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static <T> T parse(byte[] json, TypeReference<T> valueType) {
try {
return MAPPER.readValue(json, valueType);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@SuppressWarnings("unchecked")
public static Map<String, Object> parseMap(String json) {
return parse(json, Map.class);
}
public static void warmUp() {
Msc.thread(new Runnable() {
@Override
public void run() {
JSON.stringify(123);
JSON.parse("{}", Map.class);
}
});
}
public static byte[] parseBytes(String json) {
return parse(json, byte[].class);
}
}