def from_coverage_models(cls, band_expressions_and_ranges,
fields_and_coverage_models,
product_model):
band_expressions, ranges = zip(*band_expressions_and_ranges)
fields_and_coverages = {
field_name: [
Coverage.from_model(coverage)
for coverage in coverages
]
for field_name, coverages in fields_and_coverage_models.items()
}
return cls(
product_model.identifier,
band_expressions,
ranges,
fields_and_coverages, [
fields_and_coverages[field_name][0].range_type.get_field(
field_name
)
for field_name in fields_and_coverages.keys()
],
product_model.footprint
)
def lookup_coverage(self, decoder, subsets):
""" Default implementation of the coverage lookup. Returns the coverage
model for the given request decoder or raises an exception if it is
not found.
"""
coverage_id = decoder.coverage_id
try:
obj = models.EOObject.objects.select_subclasses(
models.Coverage, models.Mosaic).get(
Q(identifier=coverage_id)
& (Q(coverage__isnull=False) | Q(mosaic__isnull=False)))
except models.EOObject.DoesNotExist:
raise NoSuchCoverageException((coverage_id, ))
if isinstance(obj, models.Coverage):
return Coverage.from_model(obj)
else:
coverages = obj.coverages.all().order_by("begin_time")
if subsets:
subset_polygon = subsets.bounding_polygon(
Mosaic.from_model(obj, []))
coverages = coverages.filter(
footprint__intersects=subset_polygon)
return Mosaic.from_model(obj, coverages)
def lookup_coverages(self, decoder):
""" Default implementation of the coverage lookup. Returns a sorted list
of coverage models according to the decoders `coverage_ids`
attribute. Raises a `NoSuchCoverageException` if any of the given
IDs was not found in the database.
"""
ids = decoder.coverage_ids
# qs = models.Coverage.objects.filter(identifier__in=ids)
qs = models.EOObject.objects.filter(identifier__in=ids, ).filter(
Q(coverage__isnull=False)
| Q(mosaic__isnull=False)).select_subclasses()
objects = sorted(qs,
key=(lambda coverage: ids.index(coverage.identifier)))
# check correct number
if len(objects) < len(ids):
available_ids = set([coverage.identifier for coverage in objects])
raise NoSuchCoverageException(set(ids) - available_ids)
return [
Coverage.from_model(obj)
if isinstance(obj, models.Coverage) else Mosaic.from_model(obj)
for obj in objects
]
def render(self, params):
conf = CapabilitiesConfigReader(get_eoxserver_config())
http_service_url = get_http_service_url(params.http_request)
map_ = Map()
map_.setMetaData(
{
"enable_request":
"*",
"onlineresource":
http_service_url,
"service_onlineresource":
conf.onlineresource,
"updateSequence":
conf.update_sequence,
"name":
conf.name,
"title":
conf.title,
"label":
conf.title,
"abstract":
conf.abstract,
"accessconstraints":
conf.access_constraints,
"addresstype":
"",
"address":
conf.delivery_point,
"stateorprovince":
conf.administrative_area,
"city":
conf.city,
"postcode":
conf.postal_code,
"country":
conf.country,
"contactelectronicmailaddress":
conf.electronic_mail_address,
"contactfacsimiletelephone":
conf.phone_facsimile,
"contactvoicetelephone":
conf.phone_voice,
"contactperson":
conf.individual_name,
"contactorganization":
conf.provider_name,
"contactposition":
conf.position_name,
"role":
conf.role,
"hoursofservice":
conf.hours_of_service,
"contactinstructions":
conf.contact_instructions,
"fees":
conf.fees,
"keywordlist":
",".join(conf.keywords),
"formats":
" ".join([f.wcs10name for f in self.get_wcs_formats()]),
"srs":
" ".join(
crss.getSupportedCRS_WCS(
format_function=crss.asShortCode)),
},
namespace="ows")
map_.setProjection("EPSG:4326")
for outputformat in self.get_all_outputformats(False):
map_.appendOutputFormat(outputformat)
for coverage in params.coverages:
layer = Layer(coverage.identifier)
render_coverage = Coverage.from_model(coverage)
layer.setProjection(render_coverage.grid.spatial_reference.proj)
extent = render_coverage.extent
size = render_coverage.size
resolution = ((extent[2] - extent[0]) / float(size[0]),
(extent[1] - extent[3]) / float(size[1]))
layer.setExtent(*extent)
layer.setMetaData(
{
"title":
coverage.identifier,
"label":
coverage.identifier,
"extent":
"%.10g %.10g %.10g %.10g" % extent,
"resolution":
"%.10g %.10g" % resolution,
"size":
"%d %d" % size,
"formats":
" ".join([f.wcs10name for f in self.get_wcs_formats()]),
"srs":
" ".join(
crss.getSupportedCRS_WCS(
format_function=crss.asShortCode)),
},
namespace="wcs")
map_.insertLayer(layer)
request = create_request(params)
request.setParameter("version", params.version)
raw_result = map_.dispatch(request)
result = result_set_from_raw_data(raw_result)
xml_result = etree.fromstring(result[0].data)
for elem in xml_result.xpath('//*[local-name() = "metadataLink"]'):
elem.getparent().remove(elem)
# Add CQL parameter to GetCapabilities operation
for elem in xml_result.xpath(
'//*[local-name() = "Operation"][@name = "GetCapabilities"]'):
ows = elem.nsmap['ows']
param = etree.SubElement(elem, '{%s}Parameter' % ows)
param.attrib['name'] = 'cql'
etree.SubElement(param, '{%s}AnyValue' % ows)
xml_result_data = etree.tostring(xml_result,
pretty_print=True,
encoding='UTF-8',
xml_declaration=True)
result[0] = ResultBuffer(xml_result_data, result[0].content_type)
return result
def get_layer_description(self, eo_object, raster_styles, geometry_styles):
if isinstance(eo_object, models.Coverage):
coverage = RenderCoverage.from_model(eo_object)
return LayerDescription.from_coverage(coverage, raster_styles)
elif isinstance(eo_object, models.Mosaic):
coverage = RenderCoverage.from_model(eo_object)
return LayerDescription.from_mosaic(coverage, raster_styles)
elif isinstance(eo_object, (models.Product, models.Collection)):
if getattr(eo_object, "product_type", None):
browse_type_qs = eo_object.product_type.browse_types.all()
mask_type_qs = eo_object.product_type.mask_types.all()
elif getattr(eo_object, "collection_type", None):
browse_type_qs = models.BrowseType.objects.filter(
product_type__allowed_collection_types__collections=
eo_object)
mask_type_qs = models.MaskType.objects.filter(
product_type__allowed_collection_types__collections=
eo_object)
else:
browse_type_qs = models.BrowseType.objects.none()
mask_type_qs = models.MaskType.objects.none()
browse_types_name_and_is_gray = browse_type_qs.annotate(
is_gray=Case(When(green_expression__isnull=True,
then=Value(True)),
default=Value(False),
output_field=BooleanField())).values_list(
'name', 'is_gray').distinct()
mask_type_names = mask_type_qs.values_list('name',
flat=True).distinct()
sub_layers = [
LayerDescription("%s%soutlines" %
(eo_object.identifier, self.suffix_separator),
styles=geometry_styles,
queryable=True),
LayerDescription("%s%soutlined" %
(eo_object.identifier, self.suffix_separator),
styles=geometry_styles,
queryable=True)
]
for name, is_gray in browse_types_name_and_is_gray:
sub_layers.append(
LayerDescription(
"%s%s%s" %
(eo_object.identifier, self.suffix_separator, name)
if name else eo_object.identifier,
styles=raster_styles if is_gray else []))
for mask_type_name in mask_type_names:
sub_layers.append(
LayerDescription("%s%s%s" %
(eo_object.identifier,
self.suffix_separator, mask_type_name),
styles=geometry_styles))
sub_layers.append(
LayerDescription("%s%smasked_%s" %
(eo_object.identifier,
self.suffix_separator, mask_type_name)))
dimensions = {}
if eo_object.begin_time and eo_object.end_time:
dimensions["time"] = {
'min': isoformat(eo_object.begin_time),
'max': isoformat(eo_object.end_time),
'step': 'PT1S',
'default': isoformat(eo_object.end_time),
'units': 'ISO8601'
}
return LayerDescription(name=eo_object.identifier,
bbox=eo_object.footprint.extent
if eo_object.footprint else None,
dimensions=dimensions,
sub_layers=sub_layers)
raise UnsupportedObject("Object %r cannot be mapped to a layer." %
eo_object)
def lookup_layer(self, layer_name, suffix, style, filters_expressions,
sort_by, time, ranges, bands, wavelengths, elevation,
zoom):
""" Lookup the layer from the registered objects.
"""
reader = LayerMapperConfigReader(get_eoxserver_config())
limit_products = (reader.limit_products
if reader.limit_mode == 'hide' else None)
min_render_zoom = reader.min_render_zoom
full_name = '%s%s%s' % (layer_name, self.suffix_separator, suffix)
try:
eo_object = models.EOObject.objects.select_subclasses(
models.Collection, models.Product, models.Coverage,
models.Mosaic).get(identifier=layer_name)
except models.EOObject.DoesNotExist:
raise NoSuchLayer('Layer %r does not exist' % layer_name)
if isinstance(eo_object, models.Coverage):
if suffix in ('', 'bands'):
return CoverageLayer(full_name, style,
RenderCoverage.from_model(eo_object),
bands, wavelengths, time, elevation,
ranges)
elif suffix == 'outlines':
return OutlinesLayer(name=full_name,
style=style,
fill=None,
footprints=[eo_object.footprint])
# TODO: masked coverages, when using the coverages product
else:
raise NoSuchLayer('Invalid layer suffix %r' % suffix)
# TODO: deprecated
elif isinstance(eo_object, models.Mosaic):
if suffix == 'outlines':
return OutlinesLayer(
name=full_name,
style=style,
fill=None,
footprints=[
coverage.footprint for coverage in self.iter_coverages(
eo_object, filters_expressions, sort_by)
])
else:
return MosaicLayer(
full_name, style, RenderMosaic.from_model(eo_object), [
RenderCoverage.from_model(coverage)
for coverage in self.iter_coverages(
eo_object, filters_expressions, sort_by)
], bands, wavelengths, time, elevation, ranges)
elif isinstance(eo_object, (models.Collection, models.Product)):
if suffix == '' or suffix == 'outlined' or suffix == 'bands':
browses = []
product_browses = self.iter_products_browses(
eo_object,
filters_expressions,
sort_by,
None,
style,
limit=limit_products)
has_products = False
for product, browse, _ in product_browses:
# When bands/wavelengths are specifically requested, make a
# generated browse
if bands or wavelengths:
browse = _generate_browse_from_bands(
product, bands, wavelengths, ranges)
if browse:
browses.append(browse)
has_products = True
# When available use the default browse
elif browse:
browses.append(Browse.from_model(product, browse))
has_products = True
# As fallback use the default browse type (with empty name)
# to generate a browse from the specified bands
else:
browse_type = product.product_type.browse_types.filter(
name='').first()
if browse_type:
browse = _generate_browse_from_browse_type(
product, browse_type)
if browse:
browses.append(browse)
has_products = True
if not has_products:
coverages = self.iter_coverages(eo_object,
filters_expressions,
sort_by)
if suffix == '':
return CoveragesLayer(full_name, style, [
RenderCoverage.from_model(coverage)
for coverage in coverages
], bands, wavelengths, time, elevation, ranges)
else:
return OutlinedCoveragesLayer(full_name, style, [
RenderCoverage.from_model(coverage)
for coverage in coverages
], bands, wavelengths, time, elevation, ranges)
# detect whether we are below the zoom limit
if min_render_zoom is None or zoom >= min_render_zoom:
# either return the simple browse layer or the outlined one
if suffix == '':
return BrowseLayer(name=full_name,
style=style,
browses=browses,
ranges=ranges)
else:
return OutlinedBrowseLayer(name=full_name,
style=style,
browses=browses,
ranges=ranges)
# render outlines when we are below the zoom limit
else:
return OutlinesLayer(name=full_name,
style=reader.color,
fill=reader.fill_opacity,
footprints=[
product.footprint
for product in self.iter_products(
eo_object,
filters_expressions,
sort_by,
limit=limit_products)
])
elif suffix == 'outlines':
return OutlinesLayer(
name=full_name,
style=style,
fill=None,
footprints=[
product.footprint
for product in self.iter_products(eo_object,
filters_expressions,
sort_by,
limit=limit_products)
])
elif suffix.startswith('outlines_masked_'):
post_suffix = suffix[len('outlines_masked_'):]
product_browses_mask = self.iter_products_browses_masks(
eo_object,
filters_expressions,
sort_by,
post_suffix,
limit=limit_products)
footprints = []
masks = []
for product, browse, mask, mask_type in product_browses_mask:
footprints.append(product.footprint)
masks.append(Mask.from_model(mask, mask_type))
return OutlinesLayer(
name=full_name,
style=style,
fill=None,
footprints=footprints,
masks=masks,
)
elif suffix.startswith('masked_'):
post_suffix = suffix[len('masked_'):]
mask_type = self.get_mask_type(eo_object, post_suffix)
if not mask_type:
raise NoSuchLayer('No such mask type %r' % post_suffix)
masked_browses = []
product_browses_mask = self.iter_products_browses_masks(
eo_object,
filters_expressions,
sort_by,
post_suffix,
limit=limit_products)
for product, browse, mask, mask_type in product_browses_mask:
# When bands/wavelengths are specifically requested, make a
# generated browse
if bands or wavelengths:
masked_browses.append(
MaskedBrowse(browse=_generate_browse_from_bands(
product, bands, wavelengths, ranges),
mask=Mask.from_model(mask,
mask_type)))
# When available use the default browse
elif browse:
masked_browses.append(
MaskedBrowse.from_models(product, browse, mask,
mask_type))
# As fallback use the default browse type (with empty name)
# to generate a browse from the specified bands
else:
browse_type = product.product_type.browse_types.filter(
name='').first()
if browse_type:
masked_browses.append(
MaskedBrowse(
browse=_generate_browse_from_browse_type(
product, browse_type),
mask=Mask.from_model(mask, mask_type)))
return MaskedBrowseLayer(name=full_name,
style=style,
masked_browses=masked_browses)
else:
# either browse type or mask type
browse_type = self.get_browse_type(eo_object, suffix)
if browse_type:
browses = []
product_browses = self.iter_products_browses(
eo_object,
filters_expressions,
sort_by,
suffix,
style,
limit=limit_products)
for product, browse, browse_type in product_browses:
# check if a browse is already available for that
# browse type.
if browse:
browses.append(Browse.from_model(product, browse))
# if no browse is available for that browse type,
# generate a new browse with the instructions of that
# browse type
else:
browse = _generate_browse_from_browse_type(
product, browse_type)
if browse:
browses.append(browse)
return BrowseLayer(name=full_name,
style=style,
ranges=ranges,
browses=browses)
mask_type = self.get_mask_type(eo_object, suffix)
if mask_type:
return MaskLayer(
name=full_name,
style=style,
masks=[
Mask.from_model(mask_model, mask_type)
for _, mask_model in self.iter_products_masks(
eo_object,
filters_expressions,
sort_by,
suffix,
limit=limit_products)
])
raise NoSuchLayer('Invalid layer suffix %r' % suffix)