Complicated multi-step pre-processing

complicated_multi_step_preprocess

{
    "application_id": "YOUR_APP_ID",
    "pre_process": [
        {
            "job": {
                "pre_process": [
                    {
                        "job": {
                            "pre_process": [
                                {
                                    "job": {
                                        "src": "https://s3.amazonaws.com/bltemp/boys640.jpg",
                                        "functions": [
                                            {
                                                "name": "composite",
                                                "params": {
                                                    "gravity": "CenterGravity",
                                                    "src": "https://s3.amazonaws.com/img.blitline/samples/circle_crop_mask.png",
                                                    "composite_op": "CopyOpacityCompositeOp",
                                                    "as_mask": "true"
                                                },
                                                "save": {
                                                    "image_identifier": "boys_with_crop"
                                                }
                                            }
                                        ]
                                    }
                                }
                            ],
                            "src": "&boys_with_crop",
                            "functions": [
                                {
                                    "name": "resize_to_fill",
                                    "params": {
                                        "width": 400,
                                        "height": 400
                                    },
                                    "save": {
                                        "image_identifier": "resized_boys_with_crop"
                                    }
                                }
                            ]
                        }
                    }
                ],
                "src": "&resized_boys_with_crop",
                "functions": [
                    {
                        "name": "composite",
                        "params": {
                            "src": "https://s3.amazonaws.com/bltemp/maske.png",
                            "gravity": "CenterGravity"
                        },
                        "save": {
                            "extension": ".png",
                            "image_identifier": "maske_resized_boys_with_crop",
                            "png_quantize": true
                        }
                    }
                ]
            }
        }
    ],
    "src": "&maske_resized_boys_with_crop",
    "functions": [
        {
            "name": "resize_to_fit",
            "params": {
                "width": 100
            },
            "save": {
                "image_identifier": "MY_CLIENT_ID"
            }
        }
    ]
}