json

The json middleware serializes and deserializes json on inputs and outputs.

fnrunner Key

fnrun.middleware/json

Configuration

The json middleware accepts an object with keys input and output. Each key may be set to either serialize or deserialize. If a key is not present, the json middleware does not perform any operations on the value.

Examples

The following example demonstrates a system that deserializes a json string input and serializes a structure back to json.

source: 
  fnrun.source/http:
    treatOutputAsBody: true
    outputHeaders:
      content-type: application/json
middleware:
  - fnrun.middleware/key: body
  - fnrun.middleware/json:
      input: deserialize
      output: serialize
fn: fnrun.fn/identity

The following example shows how to configure a system in which the json middleware will serialize an output value but will not affect the input value.

source: 
  fnrun.source/http:
    treatOutputAsBody: true
    outputHeaders:
      content-type: application/json
middleware:
  - fnrun.middleware/key: body
  - fnrun.middleware/json:
      output: serialize
fn: fnrun.fn/cli ./myfunction

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