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tc

“The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.” - Edsger W. Dijkstra

tc (topology composer) provides a higher-level abstraction for serverless development, focusing on the logical relationships between abstract entities (functions, events, routes, queues, channels, mutations and pages) rather than the underlying infrastructure details. tc is a stateless, graph-based, cloud-agnostic* application composer.

tc compiles a tree of entities defined in the filesystem as a topology. This composable, namespaced, sandboxed, recursive, versioned and isomorphic topology is called a Cloud Functor. A Cloud Functor has 3 key concepts - Entity Abstraction, Namespacing and Entity Composition. tc implements the Cloud Functor pattern.

Cloud Functor and tc bring the abstractions and joy of functional programming to serverless computing.

Entity image

tc is primarily a CLI app. There are external modules which provide a HTMX-based Inspector UI, a Local Emulator and a Lisp Interpreter. The CLI app provides a core set of commands to manage the lifecycle of sandboxed topologies.

Usage: tc <COMMAND>


Commands:
  build     Build layers, image trees, extensions and pack function code
  compose   Compose a Topology
  create    Create a sandboxed topology
  delete    Delete a sandboxed topology
  freeze    Freeze a sandbox and make it immutable
  invoke    Invoke a topology synchronously or asynchronously
  prune     Prune all resources in given sandbox
  resolve   Resolve a topology
  snapshot  Snapshot given sandbox
  test      Run tests in topology
  tag       Create semver tags scoped by a topology
  unfreeze  Unfreeze a sandbox and make it mutable
  update    Update entity and components
  upgrade   Upgrade tc version
  version   display current tc version

Demo image