def _getWCSMetadata(self, wcs, layer):
oldProxy = proxyFix(wcs.url)
try:
layerMetadata = wcs[layer]
bboxLimits = ','.join([str(x) for x in layerMetadata.boundingBoxWGS84])
timepositions = layerMetadata.timepositions
supportedFormats = layerMetadata.supportedFormats
supportedCRS = layerMetadata.supportedCRS
finally:
resetProxy(oldProxy)
return layerMetadata, bboxLimits, timepositions, supportedFormats, supportedCRS
def _getWCSObj(self, endpoint):
oldProxy = proxyFix(endpoint)
try:
log.debug("wcs endpoint = %s" % (endpoint,))
getCapabilitiesEndpoint = parseEndpointString(endpoint,
{'Service':'WCS', 'Request':'GetCapabilities'})
log.debug("wcs endpoint = %s" % (getCapabilitiesEndpoint,))
#requires OWSLib with cookie support
wcs=WebCoverageService(getCapabilitiesEndpoint, version='1.0.0',cookies= request.headers.get('Cookie', ''))
layers = [x[0] for x in wcs.items()]
finally:
resetProxy(oldProxy)
return wcs, layers
def _getWCSObj(endpoint):
"""Contructs a WCS object for an endpoint.
@param endpoint: endpoint URL
@return WCS object
"""
oldProxy = proxyFix(endpoint)
try:
log.debug("wcs endpoint = %s" % (endpoint,))
getCapabilitiesEndpoint = parseEndpointString(endpoint, {"Service": "WCS", "Request": "GetCapabilities"})
log.debug("wcs endpoint = %s" % (getCapabilitiesEndpoint,))
# requires OWSLib with cookie support
wcs = WebCoverageService(getCapabilitiesEndpoint, version="1.0.0", cookies=request.headers.get("Cookie", ""))
layers = [x[0] for x in wcs.items()]
finally:
resetProxy(oldProxy)
return wcs, layers
wcs, layers = self._getWCSObj(endpoint)
log.debug("wcs.url = %s" % (wcs.url,))
assert args['identifier'] in layers
log.debug("args = %s" % (args,))
oldProxy = proxyFix(endpoint)
try:
output = wcs.getCoverage(**args)
except Exception, e:
log.exception("Exception occurred")
raise
finally:
resetProxy(oldProxy)
log.debug("output = %s" % (output,))
log.debug("output.headers.keys() = %s" % (output.headers.keys(),))
log.debug("output.geturl() = %s" % (output.geturl(),))
response.headers['Content-Type']=output.headers['Content-Type']
log.debug("output.headers.keys() = %s" % (output.headers.keys(),))
contentDescription = None
for k in output.headers.keys():
if k.lower() == 'content-disposition':
contentDescription = output.headers[k]