Subscribe
In this article
Overview
This Snap receives messages from a Google Pubsub topic using the subscription name. This uses the Synchronous Pull under-pull subscription method.
Note:
1. If the property Auto Acknowledge is not selected, the same data can be pulled, which means duplicate data will be there in the output.
2. The snap will pull the messages until the message count reaches.
3. Default batch size for each pull request is 1000. If the requested message count is less than 1000, then the batch size will be set to the message count before subscribing the messages.
Snap Type
Subscribe Snap is a Read-type Snap.
Prerequisites
None.
Limitations and Known Issues
None.
Account
This Snap uses account references created on the Accounts page of SnapLogic Manager to handle access to this endpoint. See Google Pub Sub Service Account for information on setting up this type of account
Snap Views
Type | Description |
|---|---|
Input | This Snap has at most one document input view. Each document contains data in the form of json.. |
Output | This Snap has at most one document output view. Each document contains corresponding response in the form of json. |
Error | This Snap has at most one document error view and produces zero or more documents in the view. Each document contains the corresponding error record if snap is not able to subscribe the messages from the google pubsub. |
Snap Settings
Field Name | Description |
|---|---|
Label required | The name for the Snap. You can modify this to be more specific, especially if you have more than one of the same Snap in your pipeline. |
Subscription Name required | The messages will be pulled/received basing on the subscription name. The property is suggestable and will retrieve available subscription names based on the project id from the service account. Default value: None |
Message Count optional | The number of messages to consume. Default value: None |
Timestamp optional | Seeks to a specific time before subscribing the messages. The supported formats are : yyyy-MM-dd'T'HH:mm:ss or yyyy-MM-dd Default value: None Example: 2019-07-10 or 2019-07-10T10:10:00 |
Snapshot optional | Seeks to a specific snapshot before subscribing the messages. The property is suggestable and will retrieve available snapshot names basing on subscription name. Default value: None |
Auto Acknowledge Mode optional | If true, the snap acknowledges the receipt of a message when a call to receive method or when the message listener returns successfully. |
Fetching Time Out optional | The maximum time in seconds the Snap will wait for each fetching. A zero wait timeout means that fetching will be performed without waiting. Default value: 30 |
Snap Execution optional | Specifies the execution type:
Default value: Execute only |
Snap Pack History
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