com.microsoft.azure.functions.annotation

Annotation Type CustomBinding

@Retention(value=RUNTIME)
public @interface CustomBinding

Place this on a parameter to define a custom binding

• Any native Java types such as int, String, byte[]
• Nullable values using Optional<T>
• Any POJO type

The following example shows a Java function that uses a customBinding:

 @FunctionName("CustomBindingTriggerSample")
 public void logCustomTriggerInput(
     @CustomBinding(direction = "in", name = "inputParameterName", type = "customBindingTrigger") String customTriggerInput
    final ExecutionContext context
 ) {
     context.getLogger().info(customTriggerInput);
 }

Since:

1.0.0

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
String	direction The variable name used in function.json to specify the direction of the binding: in or out
String	name The variable name used in function.json.
String	type The variable name used in function.json to specify the type of the binding.

Element Detail

name

public abstract String name

The variable name used in function.json.

Returns:

The variable name used in function.json.

type

public abstract String type

The variable name used in function.json to specify the type of the binding.

Returns:

The type of the binding.

direction

public abstract String direction

The variable name used in function.json to specify the direction of the binding: in or out

Returns:

The direction of the biding.