Kaizen #130 - Zoho CRM Scala SDK (V6) - Configuration and Initialization

Kaizen #130 - Zoho CRM Scala SDK (V6) - Configuration and Initialization

Hello and welcome to another Kaizen week!

In this week's post, we'll show you how to get started with Zoho CRM's Scala SDK, and walk you through the configuration and initialization process. Specifically, we will  discuss how to use the Scala SDK to make API calls authenticated via self-client. Please note that this article holds true for Scala SDK supporting version 6 of Zoho CRM APIs.

Software Development Kits (SDKs) are sets of tools and libraries designed to simplify the development process, and the integration between applications and specific platforms or services. They provide pre-built functionalities and abstract complex tasks, facilitating easier and faster development process. Zoho CRM's Scala SDKs act as a wrapper  for the REST APIs, thus making it easier to use the services of Zoho CRM.

Simplified Authentication using Scala SDK

Authentication with Zoho CRM APIs is facilitated by the OAuth 2.0 protocol, ensuring secure access to its resources. The process begins with the generation of a grant token for your organization in the Zoho Developer Console, where you specify the required scopes. Subsequently, using this grant token, you can generate both the access token, used for API call authentication, and the refresh token, employed for refreshing the access tokens after their one-hour expiry period. You must persist these tokens, along with their expiry times, in your server's data store for seamless API access. 

However, with the Scala SDK, this authentication process is significantly simplified. After generating the grant token and initialization, the SDK takes care of the rest. The SDK handles token generation, persistence, and refreshing the access token automatically, ensuring access to the resources without manual intervention.

Using the Zoho CRM Scala SDK

Before diving into the usage of Scala SDKs, ensure that the following prerequisites are met:
  • Ensure that the client app has Java version 11 or above.
  • Ensure that the client app has Scala version 2.13.5 or above.
  • Have an IDE such as IntelliJ installed.
  • An active Zoho CRM account.

1. Register your application with Zoho CRM

When you register a client with Zoho CRM, you establish a connection between your application and Zoho CRM, enabling your application to securely access and interact with Zoho CRM APIs and resources after authentication. The registration process involves providing essential details such as the client type, homepage URL, and authorized redirect URIs, depending on the type of client you choose.

To register your client:
  1. Go to the Zoho Developer Console
  2. Click on Get Started or +ADD CLIENT
  3. Choose the Client Type as Self-Client or Server based Applications depending on your application. Read our Kaizen post on the different client types to understand better. For this article, we will proceed with Self-client as we aim to develop a Scala application for our own use.
  4. Fill in the necessary details and click CREATE to register your client successfully. This will provide you with a Client ID and Client Secret.

2. Create a Scala project in your preferred IDE

If you already have your project set up, you may skip this step. However, if you are starting out, the next crucial step is to create a Scala Project in your preferred IDE. For the purpose of this guide, we will be using IntelliJ IDEA as the IDE of choice. 

3. Include the Zoho CRM Scala SDK in your project

To include the Zoho CRM Scala SDK in your project, you can follow different methods as outlined here.  However, for the purpose of this guide, we will demonstrate how to include the SDK using the build.sbt file.

Follow these steps to include the Zoho CRM Scala SDK in your project using the build.sbt file:
  1. Open your project in IntelliJ IDEA or your preferred IDE.
  2. Locate the build.sbt file in your project directory.
  3. Add the Zoho CRM Scala SDK dependency to your build.sbt file. To add the latest version (supporting version 6 of Zoho CRM APIs), include this line in the file  and Save: libraryDependencies ++= Seq( "com.zoho.crm" % "zohocrmsdk-6-0" % "2.0.0")
  4. Sync the changes and reload the files to ensure that the SDK has been added to the project.
Please note that when you install the Zoho CRM SDK, there are many dependencies which will also be installed. These dependencies are necessary for the proper functioning of the SDK and will be automatically managed by your build tool (such as sbt) during the installation process.


4. Obtain the grant token to authenticate your client

To make API calls, you need to authenticate your client by generating a grant token with the required scopes. For this guide, we will be using the self-client created in the first step. 
Log in to the Zoho Developer Console, and generate the grant token with the required scopes. Please note that this grant token has a short life span, and that it is used to generate the access and refresh tokens. Refer to our Kaizen on OAuth2.0 for more details.


5. Configuration and Initialization of the SDK

The configuration step in initializing the SDK involves setting up various objects to define how the SDK operates. This includes specifying the domain for API calls, token persistence, error logging, resource information storage, and more.

Before going into the specifics of various configurations, let us first discuss Token Persistence. Token Persistence refers to the mechanism through which access tokens and refresh tokens obtained during authentication are stored and managed by the SDK.  By storing tokens securely, the SDK can automatically manage token expiration and renewal, eliminating the need for manual token handling by the developer.For details on the different persistence methods supported by our SDKs, please refer to the last section of this post. In this guide, we will be using File Persistence as the method for Token Persistence. However, please note that users must choose the method that best suits their requirements and preferences.

Here is a sample code to initialize the SDK. Make sure to replace the client ID, client secret, grantToken, file paths, and other configurations with your specific values. 
  1. import com.zoho.api.authenticator.OAuthToken
  2. import com.zoho.crm.api.dc.USDataCenter
  3. import com.zoho.crm.api.exception.SDKException
  4. import com.zoho.crm.api.{HeaderMap, Initializer, SDKConfig}
  5. import com.zoho.api.logger.Logger
  6. import com.zoho.api.authenticator.store.FileStore

  8. object BulkWrite {
  9.   @throws[SDKException]
  10.   def main(args: Array[String]): Unit = {
  11.     val environment = USDataCenter.PRODUCTION
  12.     val token = new OAuthToken.Builder().clientID("1000.xxx").clientSecret("xxx").grantToken( "1000.xxx").findUser(false).build()
  13.     //Object containing the absolute file path to store tokens
  14.     var tokenstore = new FileStore("/Documents/SDK-Projects/Scala-SDK/ScalaSample/sdk_tokens_new.txt")
  15.     var logger = new Logger.Builder()
  16.       .level(Logger.Levels.ALL)
  17.       .filePath("/Documents/SDK-Projects/Scala-SDK/ScalaSample/scala_sdk_log.log")
  18.       .build
  19.     var sdkConfig = new SDKConfig.Builder().pickListValidation(false).autoRefreshFields(false).connectionTimeout(1000).requestTimeout(1000).socketTimeout(1000).build
  20.     new Initializer.Builder().environment(environment).token(token).store(tokenstore).logger(logger).SDKConfig(sdkConfig).initialize()
  21.   }
  22. }
  23. class BulkWrite {}

During the initialization step, the following configuration details have to be defined to configure the  behavior and functionality of the SDK. While two of them are mandatory, the others are optional.
  1. environment (mandatory): It determines the API environment, which dictates the domain and URL for making API calls. The format follows the Domain.Environment pattern.
    eg : val env = USDataCenter.PRODUCTION
  2. token (mandatory) : Contains the user token details. Create an instance of OAuthToken with the details that you get after registering your Zoho client. Depending on the available tokens, you can select one of the following flows:
    1. Grant Token Flow: Involves storing and persisting the grant token. This flow is used when you have a grant token available. The SDK will generate and persist the access and refresh tokens, and also refresh the access token upon expiry.
    2. Refresh Token Flow: Involves storing and persisting the refresh token. This flow is used when you have a refresh token available. The SDK will generate and persist the access and refresh tokens, and also refresh the access token upon expiry.
    3. Access Token Flow: In this flow, the access token is directly utilized for API calls without token persistence. The SDK will persist the access token, but upon expiry it won't be refreshed, and an INVALID_TOKEN error will be thrown once the access token has expired.
    4. Id FLow : You can use the id from the persisted token file/DB to make API calls. The id is a unique system generated value for each token details entry in the file/DB. Please note that you can use this method only after the SDK has already been initialized.
  3. logger (optional) : You can customize the logging behavior by setting the desired log level, which can be one of the following: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE, ALL, or OFF. Additionally, you can configure the file path and file name for the log file.
  4. store (optional) : Allows you to configure token persistence for your application. If this is skipped, the SDK will create the "sdk_tokens.txt" file in the current working directory by default to persist the tokens. 

    Database Persistence
    File Persistence
    Custom Persistence
    var tokenstore = new DBStore.Builder()
      .host("hostName")
      .databaseName("databaseName")
      .tableName("tableName")
      .userName("userName")
      .password("password")
      .portNumber("portNumber")
      .build
    var tokenstore = new FileStore("/Users/user_name/Documents/scala_sdk_token.txt")
    var tokenStore = new CustomStore()

  5. SDKConfig (optional) : This method takes care of additional SDK configurations.

    Configuration Key
    Description
    autoRefreshFields
    Default Value : False
    A boolean configuration field to enable or disable automatic refreshing of module fields in the background. If set to true, fields are refreshed every hour, and if set to false, fields must be manually refreshed or deleted.
    pickListValidation
    Default Value : True
    This field enables or disables pick list validation. If enabled, user input for pick list fields is validated, and if the value does not exist in the pick list, the SDK throws an error. If disabled, the input is not validated and the API call is made.
    enableSSLVerification
    Default Value : True
    A boolean field to enable or disable curl certificate verification. If set to true, the SDK verifies the authenticity of certificate. If set to false, the SDK skips the verification.
    connectionTimeout
    Default Value : 0
    The maximum time (in seconds) to wait while trying to connect. Use 0 to wait indefinitely.
    timeout
    Default Value : 0
    The maximum time (in seconds) to allow cURL functions to execute. Use 0 to wait indefinitely.

  6. requestProxy (optional) : Configure this only if you're using a proxy server to make the API calls. To configure, create an instance of RequestProxy containing the proxy properties of the user.

    var requestProxy = new RequestProxy.Builder()
      .host("proxyHost")
      .port(80)
      .user("proxyUser")
      .password("password")
      .userDomain("userDomain")
      .build()

  7. resourcePath (optional) : To configure the absolute directory path to store user-specific files containing module fields information. If this object is skipped, the files will be stored in the project directory itself.
Once the initialization is successful, you can verify that the access and refresh tokens are generated and persisted. You can do this by checking the tokens file or the database, depending on the token persistence method you configured during initialization.


Token Persistence

There are three token persistence methods supported by our SDKs. 
  1. Token Persistence using a Database : In Database persistence, tokens are stored and retrieved from a database (e.g., MySQL). In this case, you should create a table in your database with the required columns. The custom database name and table name can be set in DBStore instance, when you initialise the SDK.
    For instance, to persist your tokens in a table named token in database named zoho in your mySQL DB, use this:

    CREATE DATABASE zoho; // use this to create database named zoho
    // use this to create a table named token, with the following necessary columns
    CREATE TABLE token ( 
      id varchar(10) NOT NULL,
      user_name varchar(255) NOT NULL,
      client_id varchar(255),
      client_secret varchar(255),
      refresh_token varchar(255),
      access_token varchar(255),
      grant_token varchar(255),
      expiry_time varchar(20),
      redirect_url varchar(255),
      api_domain varchar(255),
      primary key (id)
    );

  2. File Persistence : This method allows storing and retrieving the authentication tokens from the file in the file path that you configure. The file will contain the id, user_name, client_id, client_secret, refresh_token, access_token, grant_token, expiry_time, redirect_url, and api_domain.
  3. Custom Persistence : This is a method where users can create their own method of storing and retrieving authentication tokens. To use this method, users need to implement the TokenStore interface and override its methods according to their own logic. For more details, please refer here.
We hope that you found this useful. In next week's Kaizen post, we will discuss about Bulk Write operations using the Scala SDK for Zoho CRM, and on how to import both parent and child records in a single operation.

If you have any queries, let us know the comments below, or send an email to support@zohocrm.com. We would love to hear from you. 


Cheers!
Anu Abraham



Recommended Reads:





    • Recent Topics

    • Office-365-agenda and Microsoft Teams Integration

      Dear, I have a trial version of Zoho Recruit and trying to evaluate the Microsoft Teams Integration in Zoho Recruit. After registering with my Office 365 account and checking the result of the registration/sign-in at https://mysignins.microsoft.com/ (which

    • Delegate Access - Mobile iOS/iPad

      We’re over the moon that delegate access is now available in Zoho Mail as we were nearly ready to switch platforms because of it! Is there a timeline on when delegate mailboxes will be accessible from the iOS and iPad OS applications? Thanks, Jake

    • How to add Connector in developer platform zoho?

      Hi, I am working on creating an Extension, and part of the development is to retrieve Email templates. In my CRM instance I can invokeURL by creating Zoho OAuth connection and get the template. But developer platform does not provide Zoho OAuth or any

    • How to archive Lost/Junk Leads so sales reps don’t see them, but keep them for reporting?

      Hi everyone, In our Zoho CRM we have two Lead Status values: Lost Lead and Junk Lead. What I want to achieve is: When a lead is marked as Lost or Junk, it should disappear from my sales reps’ Lead views (so they only see active leads). At the same time,

    • Zoho CRM Canvas Copy Original Layout

      Hello all, I want to use Canvas to make small changes to certain views, not to make huge changes. Is it possible to copy the original Zoho layout and set-up and start from there? I checked and all I can find are some templates which are far from the original

    • Revenue Management: #5 Revenue Recognition in SaaS

      If you're building or running a SaaS business, you've probably encountered this. You get paid upfront for a subscription and a one-time onboarding fee, but you end up with confusion about when to consider it revenue. Can I book all of it now? Should I

    • MS Teams for daily call operations

      Hello all, Our most anticipated and crucial update is finally here! Organizations using Microsoft Teams phone system can now integrate it effectively with Zoho CRM for tasks like dialling numbers and logging calls. We are enhancing our MS Teams functionality

    • Zoho Learn Course Access Issue

      One of the learners in a specific course can't see any lessons. They are registered as both a user and learner for this course in Zoo Learn. What could be the reason?

    • ZOHOLICS Japan 2025 開催のお知らせ（再投稿）

      【コミュニティユーザーの皆さまへお知らせ】 Zoho 最大のユーザーイベント「ZOHOLICS Japan 2025」を9月19日（金）に開催します。 AI活用に関する特別講演、ユーザー事例、Zoho 製品の活用例のご紹介など、Zoholicsならではのセッションをご用意しています。 Zoho コミュニティ開催のMeetupとはまた違った雰囲気のイベントです。 ご都合のつく方はお気軽にご参加ください✨ 詳細はこちら https://events.zoho.jp/zoholics2025#/?affl=forumpost2

    • Phone Number format for Bulk Upload via csv for Zoho Sign

      What is the phone number format that we need to use for a bulk recipient upload via csv in zoho sign, should the country code be included for ex if its US should it be +18889007865 ior 18889007865 or without country code 8889007865? the sample csv provided

    • Filter Page Elements By Selectable Date Range

      I have created a basic Page that will serve as a client dashboard with elements that will provide simple counts & sums of data in reports. There are no reports or forms added to the page, just elements. It currently functions as needed, but shows the

    • Can’t Enter my Notebook is Locked

      I’ve been using Notebook for taking notes at my college for a month and I never signed in and I never established a password. Today I tried to enter the app after the update and it asked me for a password. I need to access to my notes urgently and I can’t

    • Send Email Directly to Channel

      Hi, We are coming from Slack. In Slack each channel has a unique Email address that you can send emails too. I currently forward a specific type of email from my Gmail InBox directly do this channel for Verification Codes so my team doesn't have to ask

    • Secure your external sharing process with OTP Authentication

      For any business, it's crucial to share files externally in a way that is both secure and controlled. Let's say you want to share confidential data with your partners and vendors. You must ensure that only your intended recipients can access the shared

    • Items attribute questions

      Many of my items have attributes, such as size and color. How can I add new fields to the "New Items" screen to capture that in my Purchase Orders, Items, and Sales Order pages? I only see these attribute fields when adding an Item Group. Also, on the

    • Is there a way to search mail for items you haven't yet responded to?

      I'm trying to create a search to show emails that haven't been responded to and that have also been assigned a tag or label. Is there a way to search for the inverse of replied?

    • Zobot and Sales IQ

      What will happen to the Zoho Sales IQ being integrated to the website after creating the Zobot on the website too

    • Subtotals per Header

      Hey, we would like to display subtotals per header in our invoices:

    • upgrade storage

      how to upgrade my storage

    • Linking items from books and subscription

      Linking books and subscription It is a pity that it is not possible to associate with a product an article present in ZohoBooks This would make it possible to manage products composed of a nomenclature of articles of books

    • Add the ability to view number of hours planned for a workorder while in the Dispatch Console

      Hi Zoho, When dispatching a work order through the Dispatch Console, there's currently no way to view the number of planned hours for the service tasks associated with that specific work order. Having to click into the details each time to check planned

    • Uploading Files from uploads api

      I tried uploading the image from the API call but its giving me unauthorized error even i have given valid token in header. After uploading i need that id to pass in create ticket api uploads but its not uploading that file. Please help me out in th

    • Categorize Items with Item Headers

      Hello customers, Did you ever want to classify items based on specific categories to help your customers understand your invoice better? With the new Item Header feature, you can easily categorize items in your invoices and estimates and give them a common title.  Item Headers are available in the Invoices, the Recurring Invoices and the Estimates module. It can be carried forward from estimates to invoices at the time of converting the estimates.  To add an item header: Go to the Estimates, Invoices

    • URLs being masked despite disabling tracking

      Hey, We had disabled click tracking from an email update we are sharing with our users. Despite this, the URL the end user is receiving is masked, and looks like "https://qksyl-cmpzourl.maillist-manage.net/click/1d8e72714515cda6/1d8e72714515ca70" instead

    • Change format of quantity format

      Hi,  I would like to change the qunatity format from 1,00 to 1.  Is this possible?   thanks!

    • square up and Zoho books

      Since we set up the app connection between square up and Zoho books we have realised that when the amounts are getting transferred Zoho is adding VAT again making the numbers 20% more than they should be. We have checked our settings and they VAT/ Tax

    • How to provide Access rights to specific Bank accounts

      We have several bank accounts. I want to provide certain members access to only 2-3 accounts. It appears that when I give permissions, they are for ALL bank accounts. How do I do that?

    • Errors Getting a Bank Transaction

      Using Postman(for testing), I am receiving errors when attempting to get a single bank transaction. I am able to receive the list of bank transactions with https://www.zohoapis.com/books/v3/banktransactions/?organization_id={org_id} but when I try to

    • Subscriptions Plans and CRM Products Integration?

      Is there any way to set up plans and pricing in Zoho Subscriptions and have those available as Products in the CRM? We are trying to set up the CRM and the Products seem to be more geared toward selling products that are not subscription based.  So if we sell annual or monthly contracts which are $10/seat/month, I can set this up as a plan in Subscriptions, but how can I set the same thing up in the CRM for the salespeople to sell/quote? What is the best practice for setting up the CRM Products to

    • Mapping Zoho Subscription Plans and Products to CRM and Books

      We have products that are one time products and subscription products.   1) We would like to have the ability to create an opportunity in CRM that includes both one-time charge products and subscription products.  Currently the only way of creating a subscription product is by defining a "Product->Plan" hierarchy in Zoho Subscription.  It appears that the only SYNC between Subscription and CRM is around contacts and the Product->Plan hierarchy doesn't sync to CRM, thus, you would need a duplicate

    • Zoho People Attendance Module - Split Shifts

      Hello, Our business employs a number of college students who often split their workdays between work hours and class schedules, resulting in split shifts. For example: Employee 1 works 9am to 11:30am and then leaves for class, returning to work at 3pm

    • Bulk update fields based on date

      Hi! I need all the quotes with "Quote Stage" set to "Next Year" to update to "Draft" every January 8 (every year). Can you help?

    • Target for a campaign

      Hi, Hope you can help me. I need to create a report (for a marketing campaign) that combines Deals and Contacts to export all the contacts with closed deals. I can easily do that, what I cannot do is to remove from the target the contacts that have more

    • Zoho Desk + Jira integration - Email notifications and comments posted by administrator instead of real user

      Dear All, I set up the integration under my admin account, and now when users leave comments in Jira (to created tickets in Zoho Desk), the email notifications show that the ‘Administrator’ left a comment, not a real user. The same happens in the ticket

    • Celebrating the power of visuals

      On World Photography Day, we would like to highlight the power of visuals in customer service. Visuals promote learning and understanding in less time. A photograph can rekindle a memory, convey more than words, and give a fresh perspective. How does

    • Customer address in Zoho Bookings

      Hello,  Is it possible to add customer address information to the Zoho bookings appointment screen? Or have it pull that information automatically from the CRM? We are wanting to use this as a field management software but it is difficult to pull the address from multiple sources when it would be ideal to have a clickable address on the appointment screen that opens up the user's maps.  It would also be advantageous for the "list view" to show appointment times instead of just duration and booking

    • Blocking / black listing customers

      Hi, We have a situation, we observed that certain customers are blocking multiple appointments with our advsiors but not showing up. Some of these are repeat offenders. This leads to those service hours getting blocked and not available for genuine customers.

    • Option to block bookings from specific email address or ip adresss in zoho booking

      Sometime few of our client keep booking irrelevant booking service just to resolve their queries and they keep booking it again and again whenever they have queries. Currently its disturbing our current communication process and hierarchy which we have

    • Feature Request: Email Templates for notifications accross all services

      Currently in Zoho Bookings, email notifications (such as booking confirmations, reminders, and cancellations) must be customized individually for each service. This becomes time-consuming and error-prone when managing multiple services that require consistent

    • Allow customers to choose meeting venue and meeting duration on booking page

      My business primarily involves one-to-one meetings with my clients. Given the hybrid-work world we now find ourselves in, these meetings can take several forms (which I think of as the meeting "venue"): In-person Zoom Phone call I currently handle these

    • Next Page