NewScope creates a new scope given the workflow invocation and its associates workflow definition.

Built-in functions for the expression parser.

InputFn provides a function to get the input of a task for the given key.

InvocationScope object provides information about the current invocation.

ObjectMetadata contains identity and meta-data about an object.

OutputFn provides a function to Get the output of a task.

OutputHeadersFn provides a function to Get headers in the output of a task.

ParmFn provides a function to get the invocation param for the given key.

Scope is the broadest view of the workflow invocation, which can be queried by the user.

TODO Keep old states (but prune if OOM) TODO provide garbage collector.

TaskFn provides a function to get a task for the given taskId.

TaskScope holds information about a specific task execution within the current workflow invocation.

UidFn provides a function to generate a unique (string) id.

WorkflowScope provides information about the workflow definition.

Function is an interface for providing functions that are able to be injected into the Otto runtime.

resolver resolves an expression within a given context/scope.