def download_png(environ, *args, **kwargs):
""" """
required = ['datasets', 'x1', 'y1', 'x2', 'y2', 'resolution']
missing = [x for x in required if x not in kwargs or 0 >= len(x)]
if 0 < len(missing):
msg = '{} parameter(s) must be present in the request'
msg = msg.format(', '.join(missing))
return {'ok': False, 'details': msg}
if 'SERVER_HOST' not in environ:
msg = 'Webserver misconfigured: missing SERVER_HOST environment variable'
return {'ok': False, 'details': msg}
with storage_type.get_session() as storage:
results = syntool_metadata.extract.get(root_dir,
kwargs['datasets'].split(','),
float(kwargs['x1']),
float(kwargs['y1']),
float(kwargs['x2']),
float(kwargs['y2']),
float(kwargs['resolution']),
'PNG', environ['SERVER_HOST'],
download_dir, storage)
with open(results, 'r') as f:
content = f.read()
n = datetime.datetime.now()
default_filename = 'syntool-archive-{}.tgz'.format(
n.strftime('%Y%m%d_%H%M%S'))
r = Response()
r.body = content
r.content_type = 'application/octet-stream'
r.content_disposition = 'attachement; filename={}'.format(default_filename)
r.content_description = 'File transfer'
return r
