| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.submarine.server.response; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.gson.TypeAdapter; |
| import org.apache.submarine.server.api.environment.EnvironmentId; |
| import org.apache.submarine.server.api.experiment.ExperimentId; |
| import org.apache.submarine.server.gson.EnvironmentIdDeserializer; |
| import org.apache.submarine.server.gson.EnvironmentIdSerializer; |
| import org.apache.submarine.server.api.notebook.NotebookId; |
| import org.apache.submarine.server.gson.ExperimentIdDeserializer; |
| import org.apache.submarine.server.gson.ExperimentIdSerializer; |
| import org.apache.submarine.server.gson.NotebookIdDeserializer; |
| import org.apache.submarine.server.gson.NotebookIdSerializer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.ws.rs.core.NewCookie; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.Response.ResponseBuilder; |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Json response builder. |
| * |
| * @param <T> can be an object or a ListResult |
| */ |
| public class JsonResponse<T> { |
| private static final Logger LOG = LoggerFactory.getLogger(JsonResponse.class); |
| |
| private javax.ws.rs.core.Response.Status status; |
| private final int code; |
| private final Boolean success; |
| private final String message; |
| private final T result; |
| private final transient ArrayList<NewCookie> cookies; |
| private final transient boolean pretty = false; |
| private final Map<String, Object> attributes; |
| |
| private static Gson safeGson = null; |
| |
| private static final String CGLIB_PROPERTY_PREFIX = "\\$cglib_prop_"; |
| |
| private JsonResponse(Builder<T> builder) { |
| this.code = builder.code; |
| this.success = builder.success; |
| this.message = builder.message; |
| this.attributes = builder.attributes; |
| this.result = (T) builder.result; |
| this.cookies = builder.cookies; |
| if (builder.status != null) { |
| this.status = builder.status; |
| } else { |
| status = Response.Status.fromStatusCode(this.code); |
| if (status == null) status = Response.Status.fromStatusCode(400); |
| } |
| } |
| |
| public T getResult() { |
| return result; |
| } |
| |
| public Boolean getSuccess() { |
| return success; |
| } |
| |
| @VisibleForTesting |
| public Map<String, Object> getAttributes() { |
| return attributes; |
| } |
| |
| public int getCode() { |
| return code; |
| } |
| |
| public static class Builder<T> { |
| private javax.ws.rs.core.Response.Status status; |
| private int code; |
| private Boolean success; |
| private String message; |
| private T result; |
| private Map<String, Object> attributes = new HashMap<>(); |
| private transient ArrayList<NewCookie> cookies; |
| private transient boolean pretty = false; |
| |
| public Builder(javax.ws.rs.core.Response.Status status) { |
| this.status = status; |
| this.code = status.getStatusCode(); |
| } |
| |
| public Builder(int code) { |
| this.code = code; |
| } |
| |
| public Builder<T> attribute(String key, Object value) { |
| this.attributes.put(key, value); |
| return this; |
| } |
| |
| public Builder<T> success(Boolean success) { |
| this.success = success; |
| return this; |
| } |
| |
| public Builder<T> message(String message) { |
| this.message = message; |
| return this; |
| } |
| |
| public Builder<T> result(T result) { |
| this.result = result; |
| return this; |
| } |
| |
| public Builder<T> code(int code) { |
| this.code = code; |
| return this; |
| } |
| |
| public Builder<T> cookies(ArrayList<NewCookie> newCookies) { |
| if (cookies == null) { |
| cookies = new ArrayList<>(); |
| } |
| cookies.addAll(newCookies); |
| return this; |
| } |
| |
| public javax.ws.rs.core.Response build() { |
| JsonResponse<T> jsonResponse = new JsonResponse<>(this); |
| return jsonResponse.build(); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| if (safeGson == null) { |
| GsonBuilder gsonBuilder = new GsonBuilder(); |
| if (pretty) { |
| gsonBuilder.setPrettyPrinting(); |
| } |
| gsonBuilder.setExclusionStrategies(new JsonExclusionStrategy()); |
| |
| // Trick to get the DefaultDateTypeAdatpter instance |
| // Create a first instance a Gson |
| Gson gson = gsonBuilder.setDateFormat("yyyy-MM-dd HH:mm:ss").create(); |
| |
| // Get the date adapter |
| TypeAdapter<Date> dateTypeAdapter = gson.getAdapter(Date.class); |
| |
| // Ensure the DateTypeAdapter is null safe |
| TypeAdapter<Date> safeDateTypeAdapter = dateTypeAdapter.nullSafe(); |
| |
| safeGson = new GsonBuilder() |
| .registerTypeAdapter(Date.class, safeDateTypeAdapter) |
| .registerTypeAdapter(ExperimentId.class, new ExperimentIdSerializer()) |
| .registerTypeAdapter(ExperimentId.class, new ExperimentIdDeserializer()) |
| .registerTypeAdapter(EnvironmentId.class, new EnvironmentIdSerializer()) |
| .registerTypeAdapter(EnvironmentId.class, new EnvironmentIdDeserializer()) |
| .registerTypeAdapter(NotebookId.class, new NotebookIdSerializer()) |
| .registerTypeAdapter(NotebookId.class, new NotebookIdDeserializer()) |
| .serializeNulls() |
| .create(); |
| } |
| |
| boolean haveDictAnnotation = false; |
| try { |
| if (null != getResult()) { |
| haveDictAnnotation = DictAnnotation.parseDictAnnotation(getResult()); |
| } |
| } catch (Exception e) { |
| LOG.error(e.getMessage(), e); |
| } |
| |
| String json = safeGson.toJson(this); |
| if (haveDictAnnotation) { |
| json = json.replaceAll(CGLIB_PROPERTY_PREFIX, ""); |
| } |
| |
| return json; |
| } |
| |
| private synchronized javax.ws.rs.core.Response build() { |
| ResponseBuilder r = javax.ws.rs.core.Response.status(status).entity(this.toString()); |
| if (cookies != null) { |
| for (NewCookie nc : cookies) { |
| r.cookie(nc); |
| } |
| } |
| return r.build(); |
| } |
| |
| // list result type response |
| // Used to return a list of records |
| public static class ListResult<T> { |
| private List<T> records; |
| private long total; |
| |
| public ListResult(List<T> records, long total) { |
| this.records = records; |
| this.total = total; |
| } |
| |
| public List<T> getRecords() { |
| return records; |
| } |
| |
| public void setRecords(List<T> records) { |
| this.records = records; |
| } |
| |
| public long getTotal() { |
| return total; |
| } |
| |
| public void setTotal(long total) { |
| this.total = total; |
| } |
| } |
| } |