/*-
* -\-\-
* docker-client
* --
* Copyright (C) 2016 Spotify AB
* --
* 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.
* -/-/-
*/
package com.spotify.docker.client;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.datatype.guava.GuavaModule;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import java.io.IOException;
import java.util.Map;
import java.util.Set;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Provider
@Produces(MediaType.APPLICATION_JSON)
@SuppressWarnings({"rawtypes", "unchecked"})
public class ObjectMapperProvider implements ContextResolver<ObjectMapper> {
private static final Logger log = LoggerFactory.getLogger(ObjectMapperProvider.class);
private static final Function<? super Object, ?> VOID_VALUE = new Function<Object, Object>() {
@Override
public Object apply(final Object input) {
return null;
}
};
private static final SimpleModule MODULE = new SimpleModule();
private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
static {
try {
MODULE.addSerializer(Set.class, new SetSerializer());
MODULE.addDeserializer(Set.class, new SetDeserializer());
MODULE.addSerializer(ImmutableSet.class, new ImmutableSetSerializer());
MODULE.addDeserializer(ImmutableSet.class, new ImmutableSetDeserializer());
OBJECT_MAPPER.registerModule(new GuavaModule());
OBJECT_MAPPER.registerModule(MODULE);
OBJECT_MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
OBJECT_MAPPER.setDateFormat(new DockerDateFormat());
} catch (Throwable t) {
log.error("Failure during static initialization", t);
throw t;
}
}
@Override
public ObjectMapper getContext(Class<?> type) {
return OBJECT_MAPPER;
}
public static ObjectMapper objectMapper() {
return OBJECT_MAPPER;
}
private static class SetSerializer extends JsonSerializer<Set> {
@Override
public void serialize(final Set value, final JsonGenerator jgen,
final SerializerProvider provider) throws IOException {
final Map map = (value == null) ? null : Maps.asMap(value, VOID_VALUE);
OBJECT_MAPPER.writeValue(jgen, map);
}
}
private static class SetDeserializer extends JsonDeserializer<Set> {
@Override
public Set<?> deserialize(final JsonParser jp, final DeserializationContext ctxt)
throws IOException {
final Map map = OBJECT_MAPPER.readValue(jp, Map.class);
return (map == null) ? null : map.keySet();
}
}
private static class ImmutableSetSerializer extends JsonSerializer<ImmutableSet> {
@Override
public void serialize(final ImmutableSet value, final JsonGenerator jgen,
final SerializerProvider provider) throws IOException {
final Map map = (value == null) ? null : Maps.asMap(value, VOID_VALUE);
OBJECT_MAPPER.writeValue(jgen, map);
}
}
private static class ImmutableSetDeserializer extends JsonDeserializer<ImmutableSet> {
@Override
public ImmutableSet<?> deserialize(final JsonParser jp, final DeserializationContext ctxt)
throws IOException {
final Map map = OBJECT_MAPPER.readValue(jp, Map.class);
return (map == null) ? null : ImmutableSet.copyOf(map.keySet());
}
}
}