durable-execution-sdk-js.operationsubtype.md

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OperationSubType enum

Operation subtype enumeration for categorizing different types of durable operations.

This enum provides fine-grained classification of durable operations beyond the basic operation types. Subtypes enable improved observability for specific operation patterns.

Each subtype corresponds to a specific durable context method or execution pattern.

Signature:

export declare enum OperationSubType

Enumeration Members

Member	Value	Description
CALLBACK	"Callback"	A callback creation operation (context.createCallback). Represents the creation of a callback that external systems can complete. Used for human-in-the-loop workflows and external system integration.
CHAINED_INVOKE	"ChainedInvoke"	A chained invocation operation (context.invoke). Represents calling another durable function with input parameters and waiting for its completion. Used for function composition and workflows.
MAP	"Map"	A map operation (context.map). Represents parallel processing of an array of items with concurrency control and completion policies. Each map operation coordinates multiple iterations.
MAP_ITERATION	"MapIteration"	An individual iteration within a map operation. Represents the processing of a single item within a context.map call. Each iteration runs in its own child context with isolated state.
PARALLEL	"Parallel"	A parallel execution operation (context.parallel). Represents concurrent execution of multiple branches with optional concurrency control and completion policies.
PARALLEL_BRANCH	"ParallelBranch"	An individual branch within a parallel operation. Represents a single branch of execution within a context.parallel call. Each branch runs in its own child context with isolated state.
RUN_IN_CHILD_CONTEXT	"RunInChildContext"	A child context operation (context.runInChildContext). Represents execution within an isolated child context with its own step counter and state tracking. Used for grouping related operations.
STEP	"Step"	A durable step operation (context.step). Represents atomic operations with automatic retry and checkpointing. Steps are the fundamental building blocks of durable executions.
WAIT	"Wait"	A wait operation (context.wait). Represents time-based delays that pause execution for a specified duration. Waits allow long-running workflows without keeping invocations active.
WAIT_FOR_CALLBACK	"WaitForCallback"	A wait for callback operation (context.waitForCallback). Represents waiting for an external system to complete a callback, combining callback creation with submission logic.
WAIT_FOR_CONDITION	"WaitForCondition"	A wait for condition operation (context.waitForCondition). Represents periodic checking of a condition until it's met, with configurable polling intervals and wait strategies.