When you call an action, the broker creates a Context instance which contains all request information and passes it to the action handler as a single argument.
Available properties & methods of Context:
| Name | Type | Description |
|---|---|---|
ctx.id |
String |
Context ID |
ctx.broker |
ServiceBroker |
Instance of the broker. |
ctx.action |
Object |
Instance of action definition. |
ctx.nodeID |
String |
Node ID. |
ctx.requestID |
String |
Request ID. If you make nested-calls, it will be the same ID. |
ctx.parentID |
String |
Parent context ID (in nested-calls). |
ctx.params |
Any |
Request params. Second argument from broker.call. |
ctx.meta |
Any |
Request metadata. It will be also transferred to nested-calls. |
ctx.callerNodeID |
String |
Caller Node ID if it is requested from a remote node. |
ctx.level |
Number |
Request level (in nested-calls). The first level is 1. |
ctx.call() |
Function |
You can make a sub-call. Same arguments like broker.call |
ctx.emit() |
Function |
Emit an event, like broker.emit |
ctx.broadcast |
Function |
Broadcast an event, like broker.broadcast |