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Java SDK to enable use of MediaMath APIs
/*******************************************************************************
* Copyright 2016 MediaMath
*
* 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.mediamath.terminalone.utils;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import com.google.gson.FieldNamingPolicy;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.InstanceCreator;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonParser;
import com.google.gson.reflect.TypeToken;
import com.mediamath.terminalone.exceptions.ParseException;
import com.mediamath.terminalone.models.JsonResponse;
import com.mediamath.terminalone.models.T1Entity;
import com.mediamath.terminalone.models.TOneASCreativeAssetsApproveResponse;
import com.mediamath.terminalone.models.TOneASCreativeAssetsUpload;
import com.mediamath.terminalone.models.TPASCreativeUpload;
import com.mediamath.terminalone.models.VideoCreativeResponse;
import com.mediamath.terminalone.models.VideoCreativeUploadResponse;
import com.mediamath.terminalone.models.VideoCreativeUploadStatus;
public class T1JsonToObjParser {
private static final String COULD_NOT_PARSE_RESPONSE = "Could not parse response";
private static final String YYYY_MM_DD_T_HH_MM_SS = "yyyy-MM-dd'T'HH:mm:ss";
/**
* Extracts Data object from the response.
*
* @param response
* JSON response string.
*
* @return JsonElement object.
*
*/
public JsonElement getDataFromResponse(String response) {
JsonParser parser = new JsonParser();
JsonObject obj = parser.parse(response).getAsJsonObject();
return obj.get("data");
}
/**
* Determines the Json Element type from the given response.
*
* @param response
* JSON response string.
*
* @return int value
* 0 = null body
* 1 = Json Element is of type Object.
* 2 = Json Element is of type Array.
*
*/
/* public int getJsonElementType(String response) {
int isArrayObj = 0; // 0 = null
JsonParser parser = new JsonParser();
JsonObject obj = parser.parse(response).getAsJsonObject();
JsonElement dataElement = obj.get("data");
if (dataElement != null) {
if (dataElement.isJsonArray()) {
isArrayObj = 2; // array object
} else if (dataElement.isJsonObject()) {
isArrayObj = 1; // single object
} else if (dataElement.isJsonNull()) {
isArrayObj = 0; // nothing.
}
} else {
isArrayObj = getErrorElementType(response);
}
return isArrayObj;
}
private int getErrorElementType(String response) {
int isArrayObj = 0; // 0 = null
JsonParser parser = new JsonParser();
JsonObject obj = parser.parse(response).getAsJsonObject();
JsonElement errorElement = obj.get("errors");
if (errorElement != null) {
if (errorElement.isJsonNull()) {
isArrayObj = 0; // null
} else {
isArrayObj = 2; // array
}
}
return isArrayObj;
}*/
/**
* parses Json response String to dynamically selected Entity of type T1Entity.
*
* @param jsonstr
* the Json String to parse.
*
* @param vClassType
* Type of the class to parse to.
*
* @return JsonResponse Json Response of type T entity. T is selected
* dynamically based on the type info passed in the parameter.
*
* @throws ParseException
* a Parse Exception is thrown
*/
public JsonResponse parseJsonToObj(String jsonstr, Type vClassType)
throws ParseException {
JsonResponse jsonResponse = null;
try {
Gson gson = new GsonBuilder()
.registerTypeAdapter(JsonResponse.class, new CustomInstanceCreator())
.setDateFormat(YYYY_MM_DD_T_HH_MM_SS).create();
jsonResponse = gson.fromJson(jsonstr, vClassType);
} catch (JsonParseException parseException) {
Utility.logStackTrace(parseException);
throw new ParseException(COULD_NOT_PARSE_RESPONSE);
}
return jsonResponse;
}
/**
* parses 3pas creative upload response string to TPASCreativeUpload object.
*
* @param json3PasCreativeResponseString
* required response string
* @return TPASCreativeUpload object.
*/
public TPASCreativeUpload parse3PasCreativeUploadResponseTOObj(
String json3PasCreativeResponseString) {
TPASCreativeUpload response;
GsonBuilder builder = new GsonBuilder();
builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
response = gson.fromJson(json3PasCreativeResponseString, TPASCreativeUpload.class);
return response;
}
/**
* parses T1AS creative asset upload response to TOneASCreativeAssetsUpload entity.
*
* @param jsonT1CAUesponse
* response string.
* @return TOneASCreativeAssetsUpload object.
*/
public TOneASCreativeAssetsUpload parseTOneASCreativeAssetsUploadResponseTOObj(
String jsonT1CAUesponse) {
TOneASCreativeAssetsUpload response;
GsonBuilder builder = new GsonBuilder();
builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
response = gson.fromJson(jsonT1CAUesponse, TOneASCreativeAssetsUpload.class);
return response;
}
/**
* parses the response of second call to T1AS creative assets approve api call.
*
* @param pResponse
* requires a response string.
* @return JsonResponse returns an entity of type T.
*/
public JsonResponse parseTOneASCreativeAssetsApproveResponse(
String pResponse) {
JsonResponse response;
GsonBuilder builder = new GsonBuilder();
builder.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_DASHES);
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
Type type = new TypeToken>>() {
}.getType();
response = gson.fromJson(pResponse, type);
return response;
}
/**
* parse video creative to VideoCreativeReponse entity.
*
* @param pResponse
* response String.
* @return VideoCreativeResponse object.
*/
public VideoCreativeResponse parseVideoCreative(String pResponse) {
VideoCreativeResponse response;
GsonBuilder builder = new GsonBuilder();
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
builder.setLenient();
Gson gson = builder.create();
response = gson.fromJson(pResponse, VideoCreativeResponse.class);
return response;
}
/**
* parse video creative to VideoCreativeReponse entity.
*
* @param pResponse
* response String.
* @return VideoCreativeResponse object.
*/
public VideoCreativeUploadResponse parseVideoCreativeUpload(String pResponse) {
VideoCreativeUploadResponse response;
GsonBuilder builder = new GsonBuilder();
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
builder.setLenient();
Gson gson = builder.create();
response = gson.fromJson(pResponse, VideoCreativeUploadResponse.class);
return response;
}
/**
* parses video creative upload status response to VideoCreativeUploadStatus entity.
*
* @param pResponse
* response string.
* @return VideoCreativeUploadStatus object.
*/
public VideoCreativeUploadStatus parseVideoCreativeUploadStatus(String pResponse) {
VideoCreativeUploadStatus response;
GsonBuilder builder = new GsonBuilder();
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
response = gson.fromJson(pResponse, VideoCreativeUploadStatus.class);
return response;
}
/**
* Creates a JsonResponse instance based on the type information extracted from the Actual Type
* arguments or the type information passed in.
*
* @author chauhan_n
*
*/
class CustomInstanceCreator implements InstanceCreator> {
@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public JsonResponse createInstance(Type type) {
Type[] typeParameters = ((ParameterizedType) type).getActualTypeArguments();
Type idType = typeParameters[0];
if (idType instanceof Class) {
return new JsonResponse((Class) idType);
} else {
return new JsonResponse(idType);
}
}
}
}