Environment Variables

When an action is being executed, your code can use the following environment variables:

• __OW_ACTION_NAME = the name of the action
• __OW_ACTION_VERSION = the internal revision of the action (developers cann't affect this)
• __OW_ACTIVATION_ID = the activation ID
• __OW_ALLOW_CONCURRENT = indicates the runtime should support concurrency (should always be true for nodejs actions)
• __OW_API_HOST = the host used for making additional OpenWhisk API requests within the action (e.g. using OpenWhisk JavaScript SDK)
• __OW_CLOUD = AWS vs Azure
• __OW_NAMESPACE = the namespace of the invocation client
• __OW_REGION = AWS/Azure region where the action was executed
• __OW_TRANSACTION_ID = request ID sent with OW API request, or generated; see response header X-Request-Id

Next steps

Return to the Runtime Reference Documentation Index.

Return to the Guides Index.