com.google.api.server.spi.config.model.ApiSerializationConfig.java Source code

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Here is the source code for com.google.api.server.spi.config.model.ApiSerializationConfig.java

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/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * 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.google.api.server.spi.config.model;

import com.google.api.server.spi.config.ApiConfigInconsistency;
import com.google.api.server.spi.config.Transformer;
import com.google.common.collect.Iterables;
import com.google.common.reflect.TypeToken;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * Flattened serialization configuration for a swarm endpoint.  Data generally originates from
 * {@link com.google.api.server.spi.config.ApiTransformer} annotations.
 */
public class ApiSerializationConfig {

    private final Map<TypeToken<?>, SerializerConfig> configs;

    public ApiSerializationConfig() {
        this.configs = new LinkedHashMap<>();
    }

    public ApiSerializationConfig(ApiSerializationConfig original) {
        this.configs = new LinkedHashMap<>(original.configs);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        } else if (o instanceof ApiSerializationConfig) {
            ApiSerializationConfig config = (ApiSerializationConfig) o;
            return Iterables.isEmpty(getConfigurationInconsistencies(config));
        } else {
            return false;
        }
    }

    public Iterable<ApiConfigInconsistency<Map<TypeToken<?>, SerializerConfig>>> getConfigurationInconsistencies(
            ApiSerializationConfig config) {
        return ApiConfigInconsistency.<Map<TypeToken<?>, SerializerConfig>>listBuilder()
                .addIfInconsistent("serialization.configs", configs, config.configs).build();
    }

    @Override
    public int hashCode() {
        return configs.hashCode();
    }

    public void addSerializationConfig(Class<? extends Transformer<?, ?>> serializer) {
        TypeToken<?> sourceType = Serializers.getSourceType(serializer);
        configs.put(sourceType, new SerializerConfig(sourceType, serializer));
    }

    public List<SerializerConfig> getSerializerConfigs() {
        return new ArrayList<>(configs.values());
    }

    public SerializerConfig getSerializerConfig(TypeToken<?> type) {
        return configs.get(type);
    }

    /**
     * A single serialization rule.
     */
    public static class SerializerConfig {
        private final TypeToken<?> sourceType;
        private final Class<? extends Transformer<?, ?>> serializer;

        public SerializerConfig(TypeToken<?> sourceType, Class<? extends Transformer<?, ?>> serializer) {
            this.sourceType = sourceType;
            this.serializer = serializer;
        }

        public TypeToken<?> getSourceType() {
            return sourceType;
        }

        public Class<? extends Transformer<?, ?>> getSerializer() {
            return serializer;
        }

        @Override
        public boolean equals(Object obj) {
            if (obj instanceof SerializerConfig) {
                SerializerConfig other = (SerializerConfig) obj;
                return sourceType.equals(other.sourceType) && serializer.equals(other.serializer);
            }
            return false;
        }
    }
}