Release 1.1.160

This release features workflow release management, which greatly expands the capabilities of the workflow server! Of particular interest is the ability to attach notes to workflows, pebbles, and releases. Releases allow administrators and pebbles to move pebbles and workflows from one environment to another and will form the basis of automated DevOps integration.

Note	Description	Comments
Feature	Release functionality—Users can create workflow releases. Releases can be downloaded as binary files and uploaded to another Pebble Flow Server.	Releases consist of a collection of workflows and their associated pebbles. A downloaded release can be manually uploaded to another Pebble Flow server for execution.
Feature	With the added release API, programmers may query the Pebble Flow server for available releases and download the list of pebbles and workflow uris for a given release.	This supports the ability to dynamically offer multiple service functionalities to systems that integrate with Pebble Flow
Feature	Workflow callback performance	For improved performance, callbacks for workflows are now distributed across all Pebble Stream worker threads.
Feature	Added the runner role	runners can only run pebbles and workflows but cannot create new versions of pebbles or workflows
Feature	Added notes functionality	notes can be attached to pebbles, workflows, and releases.
Feature	Changed rotate keys functionality	3 keys are initially created; each can be rotated independently.
Feature	User friendly pebble versioning	pebblers can now create a new pebble version on the pebble detail page. The description and name of the pebble will be pulled from the previous version.
Feature	Workflow versioning	Pebbles can now create a new version of a workflow on the workflow detail page. The description and name of the workflow will be pulled from the previous version, and the state of the current workflow will also be copied to the new version.
Fix	An error resulted from empty worksheets produced in the workflow.	Now, this will terminate the workflow as expected.
Fix	Sometimes, error messages are not serialized correctly.	This has been fixed.
Fix	The describe API returned 404 not found for pebbles and workflows. This has been fixed.	This has been fixed.

Release 1.1.135

This release features workflow capabilities. This feature greatly expands the capabilities of the workflow server!

Note	Description	Comments
Feature	Wire together individual spreadsheets to create performant workflows	Users may create individual spreadsheets and then connect them to create elaborate calculation workflows
Feature	Execute workflows via the UI	An authorized user may provide CSV inputs for execution.
Feature	Execute workflows via the API	Workflows can be executed via a RESTful API.
Technical	A separate app server called the orchestrator is part of the deployment.	The orchestrator is dedicated to managing workflow state via Azure queue messages. Do not apply scaling rules to this server, as there should always be just one.
Technical	Timeouts related to message leases have been removed	All environment variables related to message timeouts have been deprecated. Messages are now immediately deleted from the queue once the request has been submitted. Pebble Flow does its best to guarantee the completion of a request.
Technical	Upgrade to Java 21	Moved from Java 11 to Java 21 to take advantage of Azure's improved memory management facilities.
Bug	Describe endpoint returns 404 Not Found for pebble and workflows	Will be fixed in the next release.

Release 1.0.0

This is our first release of the Pebble Flow workflow server! The following features are available in this release.

Note	Description	Comments
Feature	Execute pebbles via UI	A spreadsheet that is compiled with Pebble Stream is called a pebble. An authorized user may provide CSV inputs for execution.
Feature	Execute pebbles via API	Pebbles can be executed via a RESTful API
Feature	Download pebbles via API	A compiled pebble can be programmatically downloaded via the API and executed by the Pebble Stream runtime.
Feature	Compile pebbles via UI	A spreadsheet can be compiled into a pebble by a user
Feature	Version control spreadsheets and pebbles	Pebble Flow maintains all compiled spreadsheets over time in the order they were compiled.
Feature	Manage users	Pebble Flow users can be activated and deactivated. Supported roles are admin, pebbler, and viewer.
Feature	Maintain a library of spreadsheets.	Pebble Flow has a library interface that displays all compiled pebbles.