Simple PyWPS demo for JSON input and output

say_goodbye.py

# -*- coding: utf-8 -*-
"""
Purpose: Demo of basic PyWPS JSON functionality (requires PyWPS v4.0.x)
Created: 10-01-2017
Author: dhohls@csir.co.za

Adapted from:
    https://github.com/geopython/pywps-demo/blob/master/demo.py
"""
import json
from pywps import Process, LiteralInput, LiteralOutput, \
    ComplexInput, ComplexOutput, Format


class SayGoodbye(Process):
    def __init__(self):
        inputs = [ComplexInput(
            identifier='person',
            title='Input details',
            data_format=[Format('application/json')])]
        outputs = [ComplexOutput(
            identifier='response',
            title='Output response', 
            supported_formats=[Format('application/json')])]

        super(SayGoodbye, self).__init__(
            self._handler,
            identifier='say_goodbye',
            title='Say Goodbye',
            version='1.9.6.3',
            inputs=inputs,
            outputs=outputs,
            store_supported=True,
            status_supported=True
        )

    def _handler(self, request, response):
        title = request.inputs['person'][0].data.get('title', 'M.')
        firstname = request.inputs['person'][0].data.get('firstname', '')
        surname = request.inputs['person'][0].data.get('surname', 'Anonymous')
        result = {'greeting':'Goodbye %s %s %' % (title, firstname, surname)}
        response.outputs['response'].data = json.dumps(result)
        response.outputs['response'].output_format = 'application/json'
        return response