toolkit/packages/core

@actions/core

Core functions for setting results, logging, registering secrets and exporting variables across actions

Usage

Inputs/Outputs

You can use this library to get inputs or set outputs:

const core = require('@actions/core');

const myInput = core.getInput('inputName', { required: true });

// Do stuff

core.setOutput('outputKey', 'outputVal');

Exporting variables/secrets

You can also export variables and secrets for future steps. Variables get set in the environment automatically, while secrets must be scoped into the environment from a workflow using {{ secret.FOO }}. Secrets will also be masked from the logs:

const core = require('@actions/core');

// Do stuff

core.exportVariable('envVar', 'Val');
core.exportSecret('secretVar', variableWithSecretValue);

PATH Manipulation

You can explicitly add items to the path for all remaining steps in a workflow:

const core = require('@actions/core');

core.addPath('pathToTool');

Exit codes

You should use this library to set the failing exit code for your action:

const core = require('@actions/core');

try {
  // Do stuff
}
catch (err) {
  // setFailed logs the message and sets a failing exit code
  core.setFailed(`Action failed with error ${err}`);
}

Logging

Finally, this library provides some utilities for logging. Note that debug logging is hidden from the logs by default. This behavior can be toggled by enabling the Step Debug Logs.

const core = require('@actions/core');

const myInput = core.getInput('input');
try {
  core.debug('Inside try block');
  
  if (!myInput) {
    core.warning('myInput wasnt set');
  }
  
  // Do stuff
}
catch (err) {
  core.error('Error ${err}, action may still succeed though');
}