Google Calendar Connector for Talend Studio

Read / write Google Calendar data inside your app; perform many Google Calendar operations without coding, just using easy to use high performance API Connector for Google Calendar

In this article you will learn how to quickly and efficiently integrate Google Calendar data in Talend Studio without coding. We will use high-performance Google Calendar Connector to easily connect to Google Calendar and then access the data inside Talend Studio.

Let's follow the steps below to see how we can accomplish that!

Download Documentation

Create Data Source in ZappySys Data Gateway based on API Driver

  1. Download and install ODBC PowerPack.

  2. Search for gateway in start menu and Open ZappySys Data Gateway:
    Open ZappySys Data Gateway

  3. Go to Users Tab to add our first Gateway user. Click Add; we will give it a name tdsuser and enter password you like to give. Check Admin option and click OK to save. We will use these details later when we create linked server:
    ZappySys Data Gateway - Add User

  4. Now we are ready to add a data source. Click Add, give data source a name (Copy this name somewhere, we will need it later) and then select Native - ZappySys API Driver. Finally, click OK. And it will create the Data Set for it and open the ZS driver UI.

    GoogleCalendarDSN

    ZappySys Data Gateway - Add Data Source

  5. When the Configuration window appears give your data source a name if you haven't done that already, then select "Google Calendar" from the list of Popular Connectors. If "Google Calendar" is not present in the list, then click "Search Online" and download it. Then set the path to the location where you downloaded it. Finally, click Continue >> to proceed with configuring the DSN:

    GoogleCalendarDSN
    Google Calendar
    ODBC DSN Template Selection
  6. Now it's time to configure the Connection Manager. Select Authentication Type, e.g. Token Authentication. Then select API Base URL (in most cases, the default one is the right one). More info is available in the Authentication section.

    User accounts represent a developer, administrator, or any other person who interacts with Google APIs and services. User accounts are managed as Google Accounts, either with Google Workspace or Cloud Identity. They can also be user accounts that are managed by a third-party identity provider and federated with Workforce Identity Federation. [API reference]

    Steps how to get and use Google Calendar credentials

    Follow these steps on how to create Client Credentials (User Account principle) to authenticate and access Google Calendar API in SSIS package or ODBC data source:

    WARNING: If you are planning to automate processes, we recommend that you use a Service Account authentication method. In case, you still need to use User Account, then make sure you use a system/generic account (e.g. automation@my-company.com). When you use a personal account which is tied to a specific employee profile and that employee leaves the company, the token may become invalid and any automated processes using that token will start to fail.

    Step-1: Create project

    This step is optional, if you already have a project in Google Cloud and can use it. However, if you don't, proceed with these simple steps to create one:

    1. First of all, go to Google API Console.

    2. Then click Select a project button and then click NEW PROJECT button:

      Start creating a new project in Google Cloud
    3. Name your project and click CREATE button:

      Create a new project in Google Cloud
    4. Wait until the project is created:

      Wait until project is created in Google Cloud
    5. Done! Let's proceed to the next step.

    Step-2: Enable Google Calendar API

    In this step we will enable Google Calendar API:

    1. Select your project on the top bar:

      Select project in Google Cloud
    2. Then click the "hamburger" icon on the top left and access APIs & Services:

      Access APIs and services in Google Cloud
    3. Now let's enable several APIs by clicking ENABLE APIS AND SERVICES button:

      Enable API for project in Google Cloud
    4. In the search bar search for calendar and then locate and select Google Calendar API:

      Search for API in Google Cloud
    5. Enable Google Calendar API:

      Enable Google Calendar API
    6. Done! Let's proceed to the next step.

    Step-3: Create OAuth application

    1. First of all, click the "hamburger" icon on the top left and then hit VIEW ALL PRODUCTS:

      View all products in Google Cloud
    2. Then access Google Auth Platform to start creating an OAuth application:

      Open Google Auth Platform in Google Cloud
    3. Start by pressing GET STARTED button:

      Start creating an app in Google Cloud
    4. Next, continue by filling in App name and User support email fields:

      Fill app info in Google Cloud
    5. Choose Internal option, if it's enabled, otherwise select External:

      Choose app audience in Google Cloud
    6. Optional step if you used Internal option in the previous step. Nevertheless, if you had to use External option, then click ADD USERS to add a user:

      Add test user in Google Cloud app
    7. Then add your contact Email address:

      Enter app contact info in Google Cloud
    8. Finally, check the checkbox and click CREATE button:

      Create app in Google Cloud
    9. Done! Let's create Client Credentials in the next step.

    Step-4: Create Client Credentials

    1. In Google Auth Platform, select Clients menu item and click CREATE CLIENT button:

      Start creating app client in Google Cloud
    2. Choose Desktop app as Application type and name your credentials:

      Create OAuth app client in Google Cloud
    3. Continue by opening the created credentials:

      View app client credentials in Google Cloud
    4. Finally, copy Client ID and Client secret for the later step:

      Use client ID and secret to read Google REST API data
    5. Done! We have all the data needed for authentication, let's proceed to the last step!

    Step-5: Configure connection

    1. Now go to SSIS package or ODBC data source and use previously copied values in User Account authentication configuration:

      • In the ClientId field paste the Client ID value.
      • In the ClientSecret field paste the Client secret value.
    2. Press Generate Token button to generate Access and Refresh Tokens.

    3. Finally, click Test Connection to confirm the connection is working.

    4. Done! Now you are ready to use Google Calendar Connector!

    Fill in all required parameters and set optional parameters if needed:

    GoogleCalendarDSN
    Google Calendar
    User Account [OAuth]
    https://www.googleapis.com/calendar/v3/
    Required Parameters
    UseCustomApp Fill-in the parameter...
    Optional Parameters
    ClientId
    ClientSecret
    Scope https://www.googleapis.com/auth/calendar
    RetryMode RetryWhenStatusCodeMatch
    RetryStatusCodeList 403|429
    RetryCountMax 5
    RetryMultiplyWaitTime True
    Redirect URL (Only for Web App)
    ODBC DSN Oauth Connection Configuration

    Service accounts are accounts that do not represent a human user. They provide a way to manage authentication and authorization when a human is not directly involved, such as when an application needs to access Google Cloud resources. Service accounts are managed by IAM. [API reference]

    Steps how to get and use Google Calendar credentials

    Follow these steps on how to create Service Account to authenticate and access Google Calendar API in SSIS package or ODBC data source:

    Step-1: Create project

    This step is optional, if you already have a project in Google Cloud and can use it. However, if you don't, proceed with these simple steps to create one:

    1. First of all, go to Google API Console.

    2. Then click Select a project button and then click NEW PROJECT button:

      Start creating a new project in Google Cloud
    3. Name your project and click CREATE button:

      Create a new project in Google Cloud
    4. Wait until the project is created:

      Wait until project is created in Google Cloud
    5. Done! Let's proceed to the next step.

    Step-2: Enable Google Calendar API

    In this step we will enable Google Calendar API:

    1. Select your project on the top bar:

      Select project in Google Cloud
    2. Then click the "hamburger" icon on the top left and access APIs & Services:

      Access APIs and services in Google Cloud
    3. Now let's enable several APIs by clicking ENABLE APIS AND SERVICES button:

      Enable API for project in Google Cloud
    4. In the search bar search for calendar and then locate and select Google Calendar API:

      Search for API in Google Cloud
    5. Enable Google Calendar API:

      Enable Google Calendar API
    6. Done! Let's proceed to the next step.

    Step-3: Create Service Account

    Use the steps below to create a Service Account in Google Cloud:

    1. First of all, go to IAM & Admin in Google Cloud console:

      Access IAM & Admin in Google Cloud
    2. Once you do that, click Service Accounts on the left side and click CREATE SERVICE ACCOUNT button:

      Start creating service account in Google Cloud
    3. Then name your service account and click CREATE AND CONTINUE button:

      Create service account in Google Cloud
    4. Continue by clicking Select a role dropdown and start granting service account Project Viewer roles:

      Start granting service account project roles in Google Cloud
    5. Find Project group and select Viewer role:

      Grant service account project viewer role
    6. Finish adding roles by clicking CONTINUE button:

      Finish granting service account project roles in Google Cloud
      You can always add or modify permissions later in IAM & Admin.
    7. Finally, in the last step, just click button DONE:

      Finish configuring service account in Google Cloud
    8. Done! We are ready to add a Key to this service account in the next step.

    Step-4: Add Key to Service Account

    We are ready to add a Key (P12 certificate) to the created Service Account:

    1. In Service Accounts open newly created service account:

      Open service account in Google Cloud
    2. Next, copy email address of your service account for the later step:

      Copy service account email address in Google Cloud
    3. Continue by selecting KEYS tab, then press ADD KEY dropdown, and click Create new key menu item:

      Start creating key for service account in Google Cloud
    4. Finally, select P12 option and hit CREATE button:

      Create P12 key for service account in Google Cloud
    5. P12 certificate downloads into your machine. We have all the data needed for authentication, let's proceed to the last step!

    Step-5: Share Google Calendar with Service Account

    Now it's time to grant Google Calendar read/write permissions to the created service account:

    1. Login to https://calendar.google.com with Google account credentials whose calendar you want to share with the service account.
    2. On the top right click gear icon and click Settings item to open configuration.
    3. Then on the left, click Settings of my calendars section.
    4. Locate the calendar you want to share and select it.
    5. In the dropdown hit Share with specific people or groups and click Add people and groups button.
    6. Enter the service account email address we obtained in the previous section.
    7. Finally, choose the permissions, e.g. Make changes to events:
    8. Share Google Calendar with service account
    9. Click Send button to share the calendar.
    10. That's it! Let's proceed to the configuration!

    Step-6: Configure connection

    1. Now go to SSIS package or ODBC data source and configure these fields in Service Account authentication configuration:

      • In the Service Account Email field paste the service account Email address value you copied in the previous step.
      • In the Service Account Private Key Path (i.e. *.p12) field use downloaded certificate's file path.
    2. Done! Now you are ready to use Google Calendar Connector!

    Fill in all required parameters and set optional parameters if needed:

    GoogleCalendarDSN
    Google Calendar
    Service Account [OAuth]
    https://www.googleapis.com/calendar/v3/
    Required Parameters
    Service Account Email Fill-in the parameter...
    Service Account Private Key Path (i.e. *.p12) Fill-in the parameter...
    Optional Parameters
    Scope https://www.googleapis.com/auth/calendar
    RetryMode RetryWhenStatusCodeMatch
    RetryStatusCodeList 403|429
    RetryCountMax 5
    RetryMultiplyWaitTime True
    Impersonate As (Enter Email Id)
    ODBC DSN Oauth Connection Configuration

  7. Once the data source connection has been configured, it's time to configure the SQL query. Select the Preview tab and then click Query Builder button to configure the SQL query:

    ZappySys API Driver - Google Calendar
    Read / write Google Calendar data inside your app; perform many Google Calendar operations without coding, just using easy to use high performance API Connector for Google Calendar
    GoogleCalendarDSN
    Open Query Builder in API ODBC Driver to read and write data to REST API
  8. Start by selecting the Table or Endpoint you are interested in and then configure the parameters. This will generate a query that we will use in Talend Studio to retrieve data from Google Calendar. Hit OK button to use this query in the next step.

    SELECT * FROM Calendars
    Configure table/endpoint parameters in ODBC data source based on API Driver
    Some parameters configured in this window will be passed to the Google Calendar API, e.g. filtering parameters. It means that filtering will be done on the server side (instead of the client side), enabling you to get only the meaningful data much faster.
  9. Now hit Preview Data button to preview the data using the generated SQL query. If you are satisfied with the result, use this query in Talend Studio:

    ZappySys API Driver - Google Calendar
    Read / write Google Calendar data inside your app; perform many Google Calendar operations without coding, just using easy to use high performance API Connector for Google Calendar
    GoogleCalendarDSN
    SELECT * FROM Calendars
    API ODBC Driver-based data source data preview
    You can also access data quickly from the tables dropdown by selecting <Select table>.
    A WHERE clause, LIMIT keyword will be performed on the client side, meaning that the whole result set will be retrieved from the Google Calendar API first, and only then the filtering will be applied to the data. If possible, it is recommended to use parameters in Query Builder to filter the data on the server side (in Google Calendar servers).
  10. Click OK to finish creating the data source.

Read Google Calendar data in Talend Studio

To read Google Calendar data in Talend Studio, we'll need to complete several steps. Let's get through them all right away!

This article is compatible with Talend Open Studio (a free version, currently retired by Qlik). If you don't have it, you can still purchase a shareware version of Talend Studio from Qlik.

Create connection for input

  1. First of all, open Talend Studio
  2. Create a new connection: Creating a new connection in Talend Studio
  3. Select Microsoft SQL Server connection: Creating SQL Server connection in Talend Studio
  4. Name your connection: Naming a connection in Talend Studio
  5. Fill-in connection parameters and then click Test connection:
    GoogleCalendarDSN
    Configuring the ZappySys Data Gateway connection in Talend Studio
  6. If the List of modules not installed for this operation window shows up, then download and install all of them: Configure the connection
    Review and accept all additional module license agreements during the process
  7. Finally, you should see a successful connection test result at the end: Connection test successful

Add input

  1. Once we have a connection to ZappySys Data Gateway created, we can proceed by creating a job: Create a job in Talend Studio
  2. Simply drag and drop ZappySys Data Gateway connection onto the job: Creating an input based on ZappySys Data Gateway connection
  3. Then create an input based on ZappySys Data Gateway connection: Creating an input based on ZappySys Data Gateway connection
  4. Continue by configuring a SQL query and click Guess schema button: Configuring a SQL query in Talend Studio
  5. Finish by configuring the schema, for example: Configuring a schema in Talend Studio

Add output

We are ready to add an output. From Palette drag and drop a tFileOutputDelimited output and connect it to the input: Connecting tFileOutputDelimited output in Talend Studio

Run the job

Finally, run the job and integrate your Google Calendar data: Integrating Google Calendar data in Talend Studio

Actions supported by Google Calendar Connector

Learn how to perform common Google Calendar actions directly in Talend Studio with these how-to guides:

Conclusion

In this article we showed you how to connect to Google Calendar in Talend Studio and integrate data without any coding, saving you time and effort. It's worth noting that ZappySys API Driver allows you to connect not only to Google Calendar, but to any Java application that supports JDBC (just use a different JDBC driver and configure it appropriately).

We encourage you to download Google Calendar Connector for Talend Studio and see how easy it is to use it for yourself or your team.

If you have any questions, feel free to contact ZappySys support team. You can also open a live chat immediately by clicking on the chat icon below.

Download Google Calendar Connector for Talend Studio Documentation

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