com.facebook.buck.intellij.plugin.ws.buckevents.BuckEventAdapter.java Source code

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/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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.facebook.buck.intellij.plugin.ws.buckevents;

import com.google.common.collect.ImmutableMap;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;

import java.lang.reflect.Type;

public class BuckEventAdapter implements JsonDeserializer<BuckEventInterface> {
    static final ImmutableMap<String, Class<? extends BuckEventBase>> MAPPINGS = ImmutableMap
            .<String, Class<? extends BuckEventBase>>builder()
            .put(BuckEventBuildStart.EVENT_TYPE, BuckEventBuildStart.class)
            .put(BuckEventBuildParseStart.EVENT_TYPE, BuckEventBuildParseStart.class)
            .put(BuckEventBuildParseEnd.EVENT_TYPE, BuckEventBuildParseEnd.class)
            .put(BuckEventBuildRules.EVENT_TYPE, BuckEventBuildRules.class)
            .put(BuckEventBuildRuleStarted.EVENT_TYPE, BuckEventBuildRuleStarted.class)
            .put(BuckEventBuildRuleSuspended.EVENT_TYPE, BuckEventBuildRuleSuspended.class)
            .put(BuckEventBuildRuleResumed.EVENT_TYPE, BuckEventBuildRuleResumed.class)
            .put(BuckEventBuildRuleFinished.EVENT_TYPE, BuckEventBuildRuleFinished.class)
            .put(BuckEventBuildFinished.EVENT_TYPE, BuckEventBuildFinished.class)
            .put(BuckEventCompilerError.EVENT_TYPE, BuckEventCompilerError.class).build();

    @Override
    public BuckEventInterface deserialize(JsonElement jsonElement, Type type,
            JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
        JsonObject jsonObject = jsonElement.getAsJsonObject();
        JsonPrimitive prim = (JsonPrimitive) jsonObject.get("type");
        String typeFromJSON = prim.getAsString();

        if (MAPPINGS.containsKey(typeFromJSON)) {
            return jsonDeserializationContext.deserialize(jsonElement, MAPPINGS.get(typeFromJSON));
        }

        return jsonDeserializationContext.deserialize(jsonElement, BuckEventUnknown.class);
    }
}