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Each Geolocation Resolver implementation in WSO2 Analytics is inherited from the org.wso2.carbon.analytics.apim.spark.geolocation.api.LocationResolver abstract class that has the following abstract methods:

getLocation: This contains the implementation of the Geolocation Resolving implementation
init: This contains the implementation of Geolocation Resolver implementation

To customize the default Geolocation Resolver extension, you should override the getLocation() method with your custom implementation. For example, the following class is a sample implementation of the Geolocation Resolving service It returns the Location according to the IP of the Geolocation API that provided through the configuration on each IP resolving through the UDF.

Code Block

language	java

/*
*  Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
*  WSO2 Inc. 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 com.wso2.carbon.analytics.apim.spark.geolocation.impl;

import org.wso2.carbon.analytics.apim.spark.geolocation.api.Location;
import org.wso2.carbon.analytics.apim.spark.geolocation.api.LocationResolver;
import org.wso2.carbon.analytics.apim.spark.geolocation.exception.GeoLocationResolverException;

public class CustomLocationResolver extends LocationResolver {
   private String restUrl;
   private String username;
   private String password;

   @Override
   public void init() throws GeoLocationResolverException {

   }

   public Location getLocation(String ip) throws GeoLocationResolverException {
       return null;
   }

   public String getRestUrl() {
       return restUrl;
   }

   public void setRestUrl(String restUrl) {
       this.restUrl = restUrl;
   }

   public String getUsername() {
       return username;
   }

   public void setUsername(String username) {
       this.username = username;
   }

   public String getPassword() {
       return password;
   }

   public void setPassword(String password) {
       this.password = password;
   }
}

Compile as a jar file and copy into <Product-home>/repository/components/lib folder.
Configure the above class in geolocation.xml under <Product-home>/repository/conf/etc as following way.

<GeoLocation>
    <Implementation class="com.wso2.carbon.analytics.apim.spark.geolocation.impl.CustomLocationResolver">
        <Property name="restUrl">http://localhost:80080/geolocation/service</Property>
        <Property name="username">admin</Property>
        <Property name="password">admin</Property>
    </Implementation>
    <Cache>
        <enabled>true</enabled>
        <IpResolveCacheCount>10000</IpResolveCacheCount>
    </Cache>
</GeoLocation>

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