webtrigger

Description

get a web trigger URL

Usage

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Usage: forge webtrigger [options] [installationId]

Options

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--verbose                     enable verbose mode
-f, --functionKey [function]  web trigger key from the manifest.yml file
-h, --help                    display help for command

Operation

The forge webtrigger command provides you with a web trigger URL for a Forge function. To do this, you must first configure the function to be invoked by a web trigger in your app's manifest.yml file. See Web trigger API for instructions on how to do that.

After successfully deploying and configuring the Forge function, you can now run forge webtrigger. This command requires:

• The key of the Forge function (from the manifest), that will be invoked with a web trigger.
• The installation ID of the installation in which the Forge function will run. You can find installation IDs for all of the site/product/environment contexts in which your app is installed by running forge install list in your app's top-level directory.

The command uses this information to generate and display a URL that can be used to invoke that function in that particular installation. Running forge webtrigger multiple times for the same installation ID and function will display the same URL.

Authentication

By default, Forge does not authenticate web trigger URLs. You’ll need to implement your own authentication inside the trigger itself. For example, you can add a check for an Authorization header in the request and validate any provided token.

Examples

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forge webtrigger

This will prompt you for the installation ID (where your function will run) and the webtrigger function to invoke. The command will then generate and display a URL you can use to invoke that function.

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forge webtrigger --functionKey <function-key-from-manifest>

This lets you directly enter the key of the Forge function to invoke, then prompts you for the installation ID. The command will then generate and display a URL you can use to invoke that function.

Troubleshooting

When using a significant number of granular scopes, the authorization flow for OAuth 2.0 apps and the webTrigger.getUrl Forge requests may fail with a 414 Request-URI Too Large response, a 500 status code, a java exception for request header is too large or the error Failed to get web trigger URL: Request Entity Too Large.

To address this, use a smaller number of granular scopes or use non-granular scopes.

Further information

• forge install list - Reference for the forge install list command, which you use to get the installation ID you need.

• Web trigger - Reference information for the webtrigger module
• Web trigger API - Example of how to define a web trigger in your app's manifest
• Web trigger events - Description of request and response messages for web trigger events
• Extending your app with a scheduled trigger - Suggested development process for developing an app with a function invoked via scheduled trigger
• Platform quotas and limits - See web trigger related platform limits in the Invocation limits section
• Compass webtrigger app - Links to an example app that features the webtrigger module