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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.service;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Type;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map.Entry;
import javax.ws.rs.core.Response;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.reflect.TypeToken;
import com.mediamath.terminalone.Connection;
import com.mediamath.terminalone.ReportCriteria;
import com.mediamath.terminalone.exceptions.ClientException;
import com.mediamath.terminalone.models.JsonResponse;
import com.mediamath.terminalone.models.T1Entity;
import com.mediamath.terminalone.models.T1User;
import com.mediamath.terminalone.models.reporting.Having;
import com.mediamath.terminalone.models.reporting.ReportError;
import com.mediamath.terminalone.models.reporting.ReportErrorEntityInfo;
import com.mediamath.terminalone.models.reporting.ReportFilter;
import com.mediamath.terminalone.models.reporting.ReportStatus;
import com.mediamath.terminalone.models.reporting.ReportValidationResponse;
import com.mediamath.terminalone.models.reporting.Reports;
import com.mediamath.terminalone.models.reporting.meta.Meta;
import com.mediamath.terminalone.models.reporting.meta.MetaData;
import com.mediamath.terminalone.models.reporting.meta.MetaDimensionData;
import com.mediamath.terminalone.models.reporting.meta.MetaDimensions;
import com.mediamath.terminalone.models.reporting.meta.MetaMetrics;
import com.mediamath.terminalone.models.reporting.meta.MetricsData;
import com.mediamath.terminalone.models.reporting.meta.TimeField;
import com.mediamath.terminalone.models.reporting.meta.TimeInterval;
import com.mediamath.terminalone.utils.Utility;
public class ReportService {
private static final String UTF_8 = "UTF-8";
private static final Logger logger = LoggerFactory.getLogger(ReportService.class);
private static final String META = "meta";
private static final String YYYY_MM_DD_T_HH_MM_SS = "yyyy-MM-dd'T'HH:mm:ss";
/**
* gets uri for report meta data.
*
* @return StringBuilder object.
*
*/
public StringBuilder getMetaUri() {
StringBuilder path = new StringBuilder();
path.append(META);
return path;
}
/**
* gets uri for reports.
*
* @param report
* expects a ReportCriteria entity.
*
* @return StringBuilder object.
*/
public StringBuilder getReportUri(ReportCriteria report) {
StringBuilder path;
if (report == null)
return null;
path = new StringBuilder(report.getReportName());
try {
// dimensions
filterDimensions(report, path);
// filters
addFilters(report, path);
// having.
addHaving(report, path);
// metrics
filterMetrics(report, path);
// time rollup.
filterTimeRollUp(report, path);
// time_ window or start_date or end_date
filterTimeWindowStartDateEndDate(report, path);
// order
filterOrder(report, path);
// pagelimit & page offset
filterPageLimitPageOffset(report, path);
// precision
if (report.getPrecision() > 0) {
path.append("&precision=" + report.getPrecision());
}
} catch (UnsupportedEncodingException exception) {
logger.debug("getReportUri: UnsupportedEncodingException occured: ");
Utility.logStackTrace(exception);
}
return path;
}
private void filterPageLimitPageOffset(ReportCriteria report, StringBuilder path) {
if (report.getPageLimit() != null && !report.getPageLimit().isEmpty()
&& (report.getPageOffset() == null || report.getPageOffset().isEmpty())) {
uriAppender(path);
path.append("page_limit=" + report.getPageLimit());
} else if (report.getPageOffset() != null && !report.getPageOffset().isEmpty()
&& report.getPageLimit() != null && !report.getPageLimit().isEmpty()) {
uriAppender(path);
path.append("page_limit=" + report.getPageLimit());
path.append("&page_offset=" + report.getPageOffset());
}
}
private void filterOrder(ReportCriteria report, StringBuilder path) {
if (report.getOrder() != null && !report.getOrder().isEmpty()) {
uriAppender(path);
StringBuilder buffer = new StringBuilder();
for (String order : report.getOrder()) {
if (buffer.length() == 0) {
buffer.append("order=" + order);
} else {
buffer.append("," + order);
}
}
path.append(buffer);
}
}
private void filterTimeWindowStartDateEndDate(ReportCriteria report, StringBuilder path) {
if (report.getTimeWindow() != null && !report.getTimeWindow().isEmpty()
&& report.getStartDate() == null && report.getEndDate() == null) {
uriAppender(path);
path.append("time_window=" + report.getTimeWindow());
} else if (checkTimeWindow(report) && checkStartDate(report) && checkEndDate(report)) {
uriAppender(path);
path.append("start_date=" + report.getStartDate());
path.append("&end_date=" + report.getEndDate());
}
}
private boolean checkEndDate(ReportCriteria report) {
return report.getEndDate() != null && !report.getEndDate().isEmpty();
}
private boolean checkStartDate(ReportCriteria report) {
return report.getStartDate() != null && !report.getStartDate().isEmpty();
}
private boolean checkTimeWindow(ReportCriteria report) {
return report.getTimeWindow() == null;
}
private void filterTimeRollUp(ReportCriteria report, StringBuilder path) {
if (report.getTimeRollup() != null && !report.getTimeRollup().isEmpty()) {
uriAppender(path);
path.append("time_rollup=" + report.getTimeRollup());
}
}
private void filterMetrics(ReportCriteria report, StringBuilder path)
throws UnsupportedEncodingException {
if (report.getMetrics() != null && !report.getMetrics().isEmpty()) {
if (path.indexOf("?") == -1) {
path.append("?metrics=");
} else {
path.append("&metrics=");
}
StringBuilder buffer = new StringBuilder();
for (String metric : report.getMetrics()) {
if (buffer.length() == 0) {
buffer.append(metric);
} else {
buffer.append("," + metric);
}
}
path.append(URLEncoder.encode(buffer.toString(), UTF_8));
}
}
private void addHaving(ReportCriteria report, StringBuilder path)
throws UnsupportedEncodingException {
if (report.getHaving() != null && !report.getHaving().isEmpty()) {
if (path.indexOf("?") == -1) {
path.append("?having=");
} else {
path.append("&having=");
}
StringBuilder buffer = buildHavingCriteria(report);
// encode
path.append(URLEncoder.encode(buffer.toString(), UTF_8));
}
}
private StringBuilder buildHavingCriteria(ReportCriteria report) {
StringBuilder buffer = new StringBuilder();
int havingSize = 0;
for (Having having : report.getHaving()) {
if (checkHavingKey(having) && checkHavingOperator(having) && checkHavingValue(having)) {
buffer.append(having.getKey() + having.getOperator() + having.getValue());
if (havingSize != report.getHaving().size() - 1) {
buffer.append("&");
}
havingSize++;
}
}
return buffer;
}
private boolean checkHavingValue(Having having) {
return having.getValue() != null && !having.getValue().isEmpty();
}
private boolean checkHavingKey(Having having) {
return having.getKey() != null && !having.getKey().isEmpty();
}
private boolean checkHavingOperator(Having having) {
return having.getOperator() != null && !having.getOperator().isEmpty();
}
private void addFilters(ReportCriteria report, StringBuilder path)
throws UnsupportedEncodingException {
if (report.getFilters() != null && !report.getFilters().isEmpty()) {
if (path.indexOf("?") == -1) {
path.append("?filter=");
} else {
path.append("&filter=");
}
StringBuilder buffer = buildFilterCriteria(report);
// encode
path.append(URLEncoder.encode(buffer.toString(), UTF_8));
}
}
private StringBuilder buildFilterCriteria(ReportCriteria report) {
int filterSize = 0;
StringBuilder buffer = new StringBuilder();
for (ReportFilter f : report.getFilters()) {
if (checkFilterKey(f) && checkFilterOperator(f) && checkFilterValue(f)) {
buffer.append(f.getKey() + f.getOperator() + f.getValue());
if (filterSize != report.getFilters().size() - 1) {
buffer.append("&");
}
filterSize++;
}
}
return buffer;
}
private boolean checkFilterKey(ReportFilter f) {
return f.getKey() != null && !f.getKey().isEmpty();
}
private boolean checkFilterOperator(ReportFilter f) {
return f.getOperator() != null && !f.getOperator().isEmpty();
}
private boolean checkFilterValue(ReportFilter f) {
return f.getValue() != null && !f.getValue().isEmpty();
}
private void filterDimensions(ReportCriteria report, StringBuilder path)
throws UnsupportedEncodingException {
if (report.getDimensions() != null && !report.getDimensions().isEmpty()) {
if (path.indexOf("?") == -1) {
path.append("?dimensions=");
} else {
path.append("&dimensions=");
}
StringBuilder buffer = new StringBuilder();
for (String dimension : report.getDimensions()) {
if (buffer.length() == 0) {
buffer.append(dimension);
} else {
buffer.append("," + dimension);
}
}
// Encode
path.append(URLEncoder.encode(buffer.toString(), UTF_8));
}
}
private void uriAppender(StringBuilder path) {
if (path.indexOf("?") == -1) {
path.append("?");
} else {
path.append("&");
}
}
/**
* this method parses meta query response.
*
* @param response
* requires the JSON response.
* @return JsonResponse returns JsonResponse of type T.
*
*/
public JsonResponse parseMetaResponse(String response) {
JsonParser parser = new JsonParser();
JsonResponse finalResponse;
JsonObject obj = parser.parse(response).getAsJsonObject();
JsonElement reportsElement = obj.get("reports");
JsonObject reportsObj = reportsElement.getAsJsonObject();
if (reportsObj == null)
return null;
Meta meta = new Meta();
Type type = new TypeToken() {
}.getType();
HashMap metaData = new HashMap();
GsonBuilder builder = new GsonBuilder();
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
for (Entry a : reportsObj.entrySet()) {
String key = a.getKey();
MetaData value = gson.fromJson(a.getValue(), type);
metaData.put(key, value);
}
meta.setMetaData(metaData);
finalResponse = new JsonResponse(meta);
return finalResponse;
}
/**
* parses the meta data response for a particular report query.
*
* @param response
* requires JSON response.
* @return MetaData object.
*/
public MetaData parseReportMetaResponse(String response) {
GsonBuilder builder = new GsonBuilder();
builder.setDateFormat(YYYY_MM_DD_T_HH_MM_SS);
Gson gson = builder.create();
MetaData data = gson.fromJson(response, MetaData.class);
JsonParser parser = new JsonParser();
JsonObject obj = parser.parse(response).getAsJsonObject();
JsonElement reportsElement = obj.get("structure");
JsonObject dimensionObj = reportsElement.getAsJsonObject().get("dimensions").getAsJsonObject();
JsonObject metricsObj = reportsElement.getAsJsonObject().get("metrics").getAsJsonObject();
JsonObject timefieldObj = reportsElement.getAsJsonObject().get("time_field").getAsJsonObject();
// dimensions
parseDimensions(gson, data, dimensionObj);
// metrics
parseMetrics(gson, data, metricsObj);
// time_field
parseTimeField(gson, data, timefieldObj);
return data;
// end
}
private void parseTimeField(Gson gson, MetaData data, JsonObject timefieldObj) {
if (timefieldObj != null) {
TimeField timefield = new TimeField();
HashMap timeFieldMap = new HashMap();
for (Entry a : timefieldObj.entrySet()) {
String key = a.getKey();
TimeInterval value = gson.fromJson(a.getValue(), TimeInterval.class);
timeFieldMap.put(key, value);
}
timefield.setData(timeFieldMap);
data.getStructure().setTimeField(timefield);
}
}
private void parseMetrics(Gson gson, MetaData data, JsonObject metricsObj) {
if (metricsObj != null) {
MetaMetrics metrics = new MetaMetrics();
HashMap metricsMap = new HashMap();
for (Entry a : metricsObj.entrySet()) {
String key = a.getKey();
MetricsData value = gson.fromJson(a.getValue(), MetricsData.class);
metricsMap.put(key, value);
}
metrics.setMetricsMap(metricsMap);
data.getStructure().setMetrics(metrics);
}
}
private void parseDimensions(Gson gson, MetaData data, JsonObject dimensionObj) {
if (dimensionObj != null) {
MetaDimensions dimensions = new MetaDimensions();
HashMap dimensionsInfoMap = new HashMap();
for (Entry a : dimensionObj.entrySet()) {
String key = a.getKey();
MetaDimensionData value = gson.fromJson(a.getValue(), MetaDimensionData.class);
dimensionsInfoMap.put(key, value);
}
dimensions.setDimensionsInfoMap(dimensionsInfoMap);
data.getStructure().setDimensions(dimensions);
}
}
/**
* Gets Report Data.
*
* @param report
* type of report for which you want to query.
* @param finalPath
* path to hit the API endpoint.
* @param connection
* requires a Connection endpoint.
* @param user
* requires a valid user login session.
* @throws ClientException
* a client exception is thrown if any error occurs.
*/
public BufferedReader getReportData(Reports report, String finalPath, Connection connection,
T1User user) throws ClientException {
Response response = connection.getReportData(finalPath, user);
BufferedReader reader = null;
if ("text".equalsIgnoreCase(response.getMediaType().getType()) && "xml".equalsIgnoreCase(response.getMediaType().getSubtype()) && response.getStatus() != 200) {
try {
ObjectMapper xmlMapper = new XmlMapper();
String error = response.readEntity(String.class);
ReportError re = xmlMapper.readValue(error, ReportError.class);
throwReportError(re);
} catch (JsonParseException jsonParseException) {
Utility.logStackTrace(jsonParseException);
throw new ClientException("Json Parse Exception Occured");
} catch (JsonMappingException jsonMappingException) {
Utility.logStackTrace(jsonMappingException);
throw new ClientException("Json Mapping Exception Occured");
} catch (IOException ioException) {
Utility.logStackTrace(ioException);
throw new ClientException("IO Exception Occured");
}
} else if ("text".equalsIgnoreCase(response.getMediaType().getType())
&& "csv".equalsIgnoreCase(response.getMediaType().getSubtype())
&& response.getStatus() == 200) {
InputStream responseStream = response.readEntity(InputStream.class);
reader = new BufferedReader(new InputStreamReader(responseStream));
}
return reader;
}
/**
* validates the Report Data.
*
* @param report
* the specific report you want to validate.
*
* @param finalPath
* path to API endpoint.
* @param connection
* requires a connection object.
* @param user
* requires a valid user login session.
* @return ReportValidationResponse object.
* @throws ClientException
* a client exception is thrown if any error occurs.
*/
public ReportValidationResponse validateReportData(Reports report, String finalPath,
Connection connection, T1User user) throws ClientException {
Response response = connection.getReportData(finalPath, user);
ReportValidationResponse re = null;
if ("text".equalsIgnoreCase(response.getMediaType().getType()) && "xml".equalsIgnoreCase(response.getMediaType().getSubtype())) {
try {
ObjectMapper xmlMapper = new XmlMapper();
String error = response.readEntity(String.class);
re = xmlMapper.readValue(error, ReportValidationResponse.class);
} catch (JsonParseException jsonParseException) {
Utility.logStackTrace(jsonParseException);
throw new ClientException("Json Parse Exception Occured");
} catch (JsonMappingException jsonMappingException) {
Utility.logStackTrace(jsonMappingException);
throw new ClientException("Json Mapping Exception Occured");
} catch (IOException ioException) {
Utility.logStackTrace(ioException);
throw new ClientException("IO Exception Occured");
}
}
return re;
}
private void throwReportError(ReportError re) throws ClientException {
if (re != null) {
StringBuilder buffer = new StringBuilder();
parseErrorEntity(re, buffer);
parseErrorStatus(re, buffer);
throw new ClientException(buffer.toString());
}
}
private void parseErrorStatus(ReportError re, StringBuilder buffer) {
if (re.getStatus() != null && re.getStatus().length > 0) {
for (ReportStatus stats : re.getStatus()) {
if (checkStatusCode(stats) && checkStatusReason(stats) && checkStatusValue(stats)) {
buffer.append("Status[ Code: " + stats.getCode() + ", Reason: " + stats.getReason()
+ ", value: " + stats.getValue() + " ]");
}
}
}
}
private boolean checkStatusValue(ReportStatus stats) {
return stats.getValue() != null && !stats.getValue().isEmpty();
}
private boolean checkStatusReason(ReportStatus stats) {
return stats.getReason() != null && !stats.getReason().isEmpty();
}
private boolean checkStatusCode(ReportStatus stats) {
return stats.getCode() != null && !stats.getCode().isEmpty();
}
private void parseErrorEntity(ReportError re, StringBuilder buffer) {
if (re.getEntity() != null && re.getEntity().length > 0) {
for (ReportErrorEntityInfo rentity : re.getEntity()) {
if (rentity.getId() != null && rentity.getType() != null && !rentity.getId().isEmpty()
&& !rentity.getType().isEmpty()) {
buffer.append("Entity[ ID: " + rentity.getId() + ", Type: " + rentity.getType() + " ]");
}
}
}
}
}