IPipelineContext

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:12

Rich context available to every pipeline behavior during execution.

Behaviors should type-hint against this interface to stay decoupled. The concrete implementation (BasePipelineContext) provides shared logic; extend it only when you need a custom context variant.

Type Parameters

TRequest

TRequest = unknown

TResponse

TResponse = unknown

Properties

correlationId

readonly correlationId: string

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:20

Immutable correlation ID for distributed tracing: the current correlation id when the pipeline starts (from @cqrs-ddd/pipeline-correlation, or the enclosing pipeline), otherwise a new one from the correlation source’s create() (uuidv7() without one). Nested dispatches inherit it.

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handlerName

readonly handlerName: string

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:43

The handler class name string, e.g. “CreateUserHandler”.

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handlerType

readonly handlerType: Constructor

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:40

The handler class (constructor) that will process this request.

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items

readonly items: Map<string | symbol, unknown>

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:73

Bag for sharing arbitrary data between behaviors in the same execution. Use createPipelineItem and the typed item accessors for compile-time value checks. Raw map access remains supported and bypasses those checks.

Keys can be strings or exported unique symbol constants. Exported symbols are strongly recommended to prevent collision between behaviors or third-party packages.

Example

export const MY_ITEM = Symbol('MY_ITEM');
context.items.set(MY_ITEM, customData);
const val = context.items.get(MY_ITEM);

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request

readonly request: TRequest

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:31

The command/query/event instance with all its property values.

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requestKind

readonly requestKind: "command" | "query" | "event" | "unknown"

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:46

‘command’, ‘query’, or ‘event’: declared when wrapping, or read from the request’s brand.

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requestName

readonly requestName: string

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:37

The class name string, e.g. “CreateUserCommand”.

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requestType

readonly requestType: Constructor<TRequest>

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:34

The class (constructor) of the command/query/event.

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response

readonly response: TResponse | undefined

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:56

The handler’s return value, set automatically after the real handler executes. Available to behaviors in their post-next() code path. undefined before the handler runs or for event handlers that return void.

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startedAt

readonly startedAt: Date

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:49

UTC timestamp when the pipeline execution started.

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tenantId?

readonly optional tenantId?: string

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:28

Tenant of this execution: the current tenant when the pipeline starts (from @cqrs-ddd/pipeline-tenant, or the enclosing pipeline), which nested dispatches inherit. Absent when there is none; tenant-scoped behaviors then fail closed.

Methods

getBehaviorOptions()

getBehaviorOptions<T>(behaviorType): T | undefined

Defined in: packages/pipeline/src/interfaces/pipeline.context.interface.ts:81

Returns the options for a behavior on this handler: the options from a global [Behavior, opts] tuple, shallowly overridden by the options of the call site’s [Behavior, opts] entry. Returns undefined when neither supplies options for that behavior.

Type Parameters

T

T = Record<string, unknown>

Parameters

behaviorType

Constructor

Returns

T | undefined