Creates new NIFTI resource folder at scan level, retrieves resource ID, and transfers an nii.gz file into the resource folder.

transfer.py

import requests


def get_nifti_resource_id(json):
    result_set = json['ResultSet']
    if result_set is None:
        return

    result = result_set['Result']
    if result is None:
        return

    try:
        for resource in result:
            if resource['format'] != "NIFTI":
                continue
            return int(resource['xnat_abstractresource_id'])
    except TypeError:
        return

    return

user = '150973f7-2a0b-450b-9abb-8c700bdd2a54'
password = '1458585376697'
server = 'https://central.xnat.org'
experiment = 'CENTRAL_E07096'
scan = 2
base_url = '%(server)s/data/experiments/%(experiment)s/scans/%(scan)d/resources' % {"server": server,
                                                                                    "experiment": experiment,
                                                                                    "scan": scan}
put_url = '%(base_url)s/NIFTI?format=NIFTI'
post_url = '%(base_url)s/%(resource_id)d/files/%(resource_name)s?file_upload=true&format=NIFTI'
resource_template = '%(experiment)s.%(scan)03d.nii.gz'
session = requests.session()

# Create resource folder
# PUT https://central.xnat.org/REST/experiments/CENTRAL_E07096/scans/2/resources/NIFTI?format=NIFTI
put_instance = put_url % {"base_url": base_url}
put_response = session.put(put_instance, auth=(user, password))
print 'Create: %d' % put_response.status_code

# Get new folder resource ID
# GET https://central.xnat.org/REST/experiments/CENTRAL_E07096/scans/2/resources
get_response = session.get(base_url)
print 'Get: %d' % get_response.status_code
resource_id = get_nifti_resource_id(get_response.json())

if resource_id is None:
    print "Couldn't find valid resource ID, quitting..."
    exit()

# POST https://central.xnat.org/REST/experiments/CENTRAL_E07096/scans/2/resources/123232250/files/CENTRAL_E07096.002.nii
# .gz?file_upload=true&format=NIFTI
resource_name = resource_template % {"experiment": experiment, "scan": scan}
post_instance = post_url % {"base_url": base_url, "resource_id": resource_id, "resource_name": resource_name}
files = {'file': open("/Users/rherrick/Downloads/work/__SAG_LOCALIZER_20000910101500_1.nii.gz", 'rb')}
post_response = session.post(post_instance, files=files)
print 'File: %d' % post_response.status_code