Integrating One Salesforce Org to Another Salesforce Org Using REST API

Hello guys,

Today, I will show you how you can integrate one Salesforce org to another Salesforce Org using REST API. For this, you will need the following things -

1. Source Org (Salesforce Org)
2. Target Org (Salesforce Org)

STEP BY STEP INTEGRATION of Source and Target Salesforce Org-

Step 1 - Create a Connected App in Target Org.

By going, Setup-> Create->Apps OR (Search “Apps” in Quick Find Box).

Click on New and fill the details as per your requirements but your callback URL looks like this-

https://<domain>.my.salesforce.com/services/oauth2/callback

After clicking on Save you will see the Client Id and Client Secret key (Save that, we will need it for Integration)

Step 2 - Create an Apex Class in Target Org to retrieve 10 Accounts from Target Org.

Go to Developer Console and Create New Apex Class.

@RestResource(urlMapping='/v1/getAccounts/*')
global with sharing class FetchAccount {
    @HttpGet
    global static list<account> fetchAccount(){
        RestRequest req = RestContext.request;
        RestResponse res = Restcontext.response;
        List<account> listAccount =[Select Id , Name from Account LIMIT 10 ];
        return listAccount ;
    }
}

Step 3 - Create a Remote Setting on Source Org.

Search “Remote Site Setting” in Quick find Box and Enter Remote Site URL of your Target org, the format is like that -

https://<domain>.my.salesforce.com

Step 4 - Create an Apex Class in Source Org, which will callout Apex class of Target Org and return you 10 Accounts.

Here is the code:

public class GetAccountUsingRESTAPI {
    private final String clientId = 'XXXXXXXXXXXXXXXX';
    private final String clientSecret = 'XXXXXX8XXX';
    private final String username = 'SalesforceUserName';
    private final String password = 'Password';
    public class deserializeResponse
    {
        public String id;
        public String access_token;
    }
    public String ReturnAccessToken (GetAccountUsingRESTAPI acount)
    {
        String reqbody = 'grant_type=password&client_id='
            +clientId+'&client_secret='
            +clientSecret+'&username='
            +username+'&password='+password;
        Http h = new Http();
        HttpRequest req = new HttpRequest();
        req.setBody(reqbody);
        req.setMethod('POST');
        req.setEndpoint('https://login.salesforce.com/services/oauth2/token');
        HttpResponse res = h.send(req);
        deserializeResponse response = (deserializeResponse)JSON.deserialize(res.getbody(),deserializeResponse.class);
        system.debug('@@@@access_token@@'+response );
        return response.access_token;
    }
    public static list<account> callGetAccount()
    {
        GetAccountUsingRESTAPI acount1 = new GetAccountUsingRESTAPI();
        String accessToken;
        accessToken = acount1.ReturnAccessToken (acount1);
        list<account> ListAccount=new List<account>();

        if(accessToken != null) {
            String endPoint = 'https://avnish1.salesforce.com/services/apexrest/v1/getAccounts/';
            Http h2 = new Http();
            HttpRequest req1 = new HttpRequest();
            req1.setHeader('Authorization','Bearer ' + accessToken);
            req1.setHeader('Content-Type','application/json');
            req1.setHeader('accept','application/json');
            req1.setMethod('GET');
            req1.setEndpoint(endPoint);
            HttpResponse res1 = h2.send(req1);
            
            String trimmedResponse = res1.getBody().unescapeCsv().remove('\\');
            system.debug('@@@RESPONSE@@'+trimmedResponse);
            JSONParser parser = JSON.createParser(res1.getBody());
            set<account> accList=new set<account>();
            
            while (parser.nextToken() != null) {
                if((parser.getCurrentToken() == JSONToken.FIELD_NAME) ) {
                    Account acc;
                    if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && (parser.getText() == 'Id')) {
                        parser.nextToken();
                        String sId= parser.getText();
                        acc=new Account();
                        acc.Id=sId;
                        system.debug('Id@@@' + sId);
                        parser.nextToken();
                        if ((parser.getCurrentToken() == JSONToken.FIELD_NAME) && (parser.getText() == 'Name')) {
                            parser.nextToken();
                            string sName= parser.getText();
                            acc.Name=sName;
                            system.debug('Name@@@' + sName );
                        }
                    }
                    accList.add(acc); 
                }
                accList.remove(null);
            }
            ListAccount.AddAll(accList);
            system.debug('AccountList@@@@'+Json.serialize(ListAccount));
        }
        return ListAccount;
    }
}

In this code you will need to replace the following things:-

• client
• clientSecret
• username
• password

Also, Change the Endpoint in method ReturnAccessToken() in which org you are trying to log in. means where you have created your Connected Appreq.setEndpoint(‘https://login.salesforce.com/services/oauth2/token’);

Also, Change the Endpoint in method callGetAccount() in which org you are trying to access all the Contacts. means where you have developed your Apex RestService

String endPoint = ‘https://avnish1.salesforce.com/services/apexrest/v1/getAccounts/’;

Now call the function “callGetAccount()”. Feel free to ask questions in a comment box.

Thanks.

Happy Coding.