How to connect Google Cloud Pub\Sub and Google Cloud Firestore
Create a New Scenario to Connect Google Cloud Pub\Sub and Google Cloud Firestore
In the workspace, click the “Create New Scenario” button.

Add the First Step
Add the first node – a trigger that will initiate the scenario when it receives the required event. Triggers can be scheduled, called by a Google Cloud Pub\Sub, triggered by another scenario, or executed manually (for testing purposes). In most cases, Google Cloud Pub\Sub or Google Cloud Firestore will be your first step. To do this, click "Choose an app," find Google Cloud Pub\Sub or Google Cloud Firestore, and select the appropriate trigger to start the scenario.

Add the Google Cloud Pub\Sub Node
Select the Google Cloud Pub\Sub node from the app selection panel on the right.


Google Cloud Pub\Sub

Configure the Google Cloud Pub\Sub
Click on the Google Cloud Pub\Sub node to configure it. You can modify the Google Cloud Pub\Sub URL and choose between DEV and PROD versions. You can also copy it for use in further automations.
Add the Google Cloud Firestore Node
Next, click the plus (+) icon on the Google Cloud Pub\Sub node, select Google Cloud Firestore from the list of available apps, and choose the action you need from the list of nodes within Google Cloud Firestore.


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Google Cloud Firestore

Authenticate Google Cloud Firestore
Now, click the Google Cloud Firestore node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your Google Cloud Firestore settings. Authentication allows you to use Google Cloud Firestore through Latenode.
Configure the Google Cloud Pub\Sub and Google Cloud Firestore Nodes
Next, configure the nodes by filling in the required parameters according to your logic. Fields marked with a red asterisk (*) are mandatory.
Set Up the Google Cloud Pub\Sub and Google Cloud Firestore Integration
Use various Latenode nodes to transform data and enhance your integration:
- Branching: Create multiple branches within the scenario to handle complex logic.
- Merging: Combine different node branches into one, passing data through it.
- Plug n Play Nodes: Use nodes that don’t require account credentials.
- Ask AI: Use the GPT-powered option to add AI capabilities to any node.
- Wait: Set waiting times, either for intervals or until specific dates.
- Sub-scenarios (Nodules): Create sub-scenarios that are encapsulated in a single node.
- Iteration: Process arrays of data when needed.
- Code: Write custom code or ask our AI assistant to do it for you.

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Google Cloud Firestore
Trigger on Webhook
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Google Cloud Pub\Sub
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Webhook response

Save and Activate the Scenario
After configuring Google Cloud Pub\Sub, Google Cloud Firestore, and any additional nodes, don’t forget to save the scenario and click "Deploy." Activating the scenario ensures it will run automatically whenever the trigger node receives input or a condition is met. By default, all newly created scenarios are deactivated.
Test the Scenario
Run the scenario by clicking “Run once” and triggering an event to check if the Google Cloud Pub\Sub and Google Cloud Firestore integration works as expected. Depending on your setup, data should flow between Google Cloud Pub\Sub and Google Cloud Firestore (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect Google Cloud Pub\Sub and Google Cloud Firestore
Google Cloud Firestore + Slack: When a document is updated in Google Cloud Firestore, a message is sent to a specified Slack channel to notify the team of the changes.
Google Cloud Firestore + Google Cloud Pub/Sub + Google Sheets: When a document is created or updated in Google Cloud Firestore, a message is published to Google Cloud Pub/Sub. This message triggers the addition of a new row in Google Sheets to log the change for audit and tracking purposes.
Google Cloud Pub\Sub and Google Cloud Firestore integration alternatives

About Google Cloud Pub\Sub
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About Google Cloud Firestore
Use Google Cloud Firestore in Latenode to build real-time data workflows. Automate database tasks like data synchronization, backups, or event-driven updates without coding. Combine Firestore with AI tools and webhooks for powerful apps. Create complex workflows with simple visual tools and scale affordably with Latenode's pay-as-you-go pricing.
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FAQ Google Cloud Pub\Sub and Google Cloud Firestore
How can I connect my Google Cloud Pub\Sub account to Google Cloud Firestore using Latenode?
To connect your Google Cloud Pub\Sub account to Google Cloud Firestore on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select Google Cloud Pub\Sub and click on "Connect".
- Authenticate your Google Cloud Pub\Sub and Google Cloud Firestore accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I trigger Firestore updates from Pub/Sub messages?
Yes, you can! Latenode's visual editor simplifies mapping Pub/Sub message attributes to Firestore fields, automating real-time database updates without coding.
What types of tasks can I perform by integrating Google Cloud Pub\Sub with Google Cloud Firestore?
Integrating Google Cloud Pub\Sub with Google Cloud Firestore allows you to perform various tasks, including:
- Log Pub/Sub messages in Firestore for auditing.
- Trigger Firestore document updates from Pub/Sub events.
- Create real-time dashboards with Pub/Sub data stored in Firestore.
- Archive Pub/Sub messages to Firestore for long-term storage.
- Synchronize data between multiple Firestore databases using Pub/Sub.
Can Latenode handle high-volume Pub/Sub message processing?
Yes, Latenode's architecture is designed for scalability, efficiently processing large volumes of Pub/Sub messages to Firestore with no code required.
Are there any limitations to the Google Cloud Pub\Sub and Google Cloud Firestore integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex data transformations may require JavaScript code.
- Firestore document size limits can affect message archiving.
- Real-time data synchronization depends on network latency.