How to connect Google Calendar with SharePoint

This "how-to-connect" documentation will explain the initial configuration of an example connection from Google Calendar to a SharePoint Online List in Office 365. We will be synchronizing data stored in Google Calendar.

This guide presupposes that you have installed the Layer2 Cloud Connector and that you are familiar with its basic functionality. The Layer2 Cloud Connector User Documentation will provide you with all necessary information.

Contents

1. Configuring Google Calendar

2. Configuring the Layer2 Cloud Connector

2.1 Creating a new connection

2.2 Configuring the Data Entity 1

2.3 Configuring the Data Entity 2

2.4 Running your connection

3. Hints and known issues

3.1 Connection direction

3.2 Data model

3.3 Batch operations

3.4 Recurring events

3.5 Pop-up

3.6 Backend service and authentication

1. Configuring Google Calendar

You do not need any configuration for the Google Calendar. The authentication with your account in the Preview Data step will make it possible to get data from your calendar based on the User property and e-mail address you set to it.

2. Configuring the Layer2 Cloud Connector

2.1. Creating a new connection

Create a new connection by using the Create New Connection option in the Actions pane (right-hand side). The new connection will appear at the bottom of the Connection Manager List (left-hand side). Click on your newly created connection to open the connection configuration settings.

Choose a meaningful name for your connection and replace the current "New Connection" Connection Title with it.

An initial connection should always be uni-directional to assure that both data entities are identical. Therefore, choose Left to Right as Direction.

2.2. Configuring the Data Entity 1

We will now set up our Data Entities. Go to the data entity “Data Entity 1” to open the configuration settings.

Choose a Data Entity Title. It is recommended to give your entities meaningful names to maintain an overview when you decide to set up multiple connections.

Select the Data Provider for Google Calendar from the data provider list. You can search for Google Calendar by typing into the selection box.

For the Connection String, we need the in step 1 mentioned information. You can copy the below connection string and adjust it to match your gathered information. Use the Verify Connection String option to evaluate if the provided connection string is valid.

InitiateOAuth=GETANDREFRESH;[email protected];	

• "InitiateOAuth=GETANDREFRESH;" this property defines a new token after using the actual one so you do not need to refresh it manually.
• "[email protected];" this property points to your Gmail email address.

The Select Statement text box is used to define specific data queries. We will be gathering all e-mails from our account. You can copy the below select statement and adjust it to match your needs. Save your changes by using the right-hand pane option Save Changes.

SELECT * FROM [[email protected]]

To check if all necessary columns are received, you can use the Preview Data option on the right-hand pane which will provide you with a pop-up window showing your sample data from your Google Calendar entity.

2.3. Configuring the Data Entity 2

We are going to send the data to a custom SharePoint Online list. It's required that you set up this list prior to the next steps. Your list should contain matching columns according to your source entity.

Use the left-hand pane to switch to the data entity "Data Entity 2". We will be using the Layer2 SharePoint Provider for this setup. 

For more information about the SharePoint provider visit:

https://www.layer2solutions.com/support/cloud-connector-faqs/layer2-csom-sharepoint-ado-net-provider.

You can copy the below Connection String which contains the minimum of required properties to connect to your custom SharePoint Online list.

URL=https://your_custom_sharepoint_list_url/AllItems.aspx;Authentication=Microsoft_Modern;

• "URL=https://your_custom_sharepoint_url/AllItems.aspx;" this property defines the URL of your custom list that will be addressed.
• "Authentication=Microsoft_Modern;" this property will determine the authentication method used. Microsoft_Moddern is the default authentication method to access Microsoft Office 365 / SharePoint Online and should work in most cases, even if the SharePoint site is connected to an ADFS. This authentication does not need any further connection string settings, other than the URL of the connected system.

Enter the password that belongs to the user account used in the connection string into the Password field. Save your changes by using the right-hand pane option Save Changes.

In the next step, we will configure our mapping settings. Click on the Mappings option on the left-hand pane. If your fields from SharePoint are named identical to the fields from your source system, the Enable Auto Mapping option will match those columns. Disabling this option allows you to match your columns as needed. To synchronize with SharePoint you must set a start and end time in the mapping fields. Save your changes by using the right-hand pane option Save Changes.

2.4. Running your connection

To run your connection switch back to the main connection configuration node and use the Run Now Button located on the bottom of the setup page. The Run Synchronization Toolbox will also display the synchronization process. 

Below is a data preview of the information we have accessed in our source entity:

This will be the result in our SharePoint Online list after our initial successful synchronization:

See section 3.1 for further information.

3. Hints and known issues

3.1. Connection direction

As far as tested, this connection supports uni-directional only.

3.2. Data model

To see all the tables and views you can access with the Google Calendar provider, use these queries in the Select Statement:

SELECT * FROM sys_tables

SELECT * FROM sys_views

If there are more tables or views available, you can load them with the option "load more" in the popup window.

3.3. Batch operations

If you try to make multiple operations at the same time, you can get an error that batch operations not allowed. Set the parameter Other=’BatchSize=1’ in your connection string to avoid this error.

3.4 Recurring events

Recurring events are not fully supported into SharePoint. The entities do not map the recurring events correctly. Only the first event from the series will be mapped.

3.5 Pop-up

When clicking on Preview Data, some browser versions are not supported. You can change the selected browser version for the Preview Data pop-up window adding or changing a specific registry key in Windows.

Open your registry editor and follow this path:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION

Create a new DWORD (32bit) with the name mmc.exe and set the decimal value to 11001. Restart the Cloud Connector.

You can find more information about it here.

3.6 Backend service and authentication

The connection to this system uses a custom authentication. The provider needs the running account connected to the backend service from the Cloud Connector. 

Open services.msc and search for the Layer2 Cloud Connector Backend Service. Right-click on it and go to Properties. Set your account with the password in the tab Log On. Restart the service.

NOTE: if you update your Layer2 Cloud Connector, this step must be repeated.

↑Top