def create_qgis_server_thumbnail(instance, overwrite=False, bbox=None):
"""Task to update thumbnails.
This task will formulate OGC url to generate thumbnail and then pass it
to geonode
:param instance: Resource instance, can be a layer or map
:type instance: Layer, Map
:param overwrite: set True to overwrite
:type overwrite: bool
:param bbox: Bounding box of thumbnail in 4 tuple format
[xmin,ymin,xmax,ymax]
:type bbox: list(float)
:return:
"""
thumbnail_remote_url = None
try:
# to make sure it is executed after the instance saved
if isinstance(instance, Layer):
thumbnail_remote_url = layer_thumbnail_url(instance,
bbox=bbox,
internal=False)
elif isinstance(instance, Map):
thumbnail_remote_url = map_thumbnail_url(instance,
bbox=bbox,
internal=False)
else:
# instance type does not have associated thumbnail
return True
if not thumbnail_remote_url:
return True
logger.debug('Create thumbnail for %s' % thumbnail_remote_url)
if overwrite:
# if overwrite, then delete existing thumbnail links
instance.link_set.filter(resource=instance.get_self_resource(),
name="Remote Thumbnail").delete()
instance.link_set.filter(resource=instance.get_self_resource(),
name="Thumbnail").delete()
create_thumbnail(instance,
thumbnail_remote_url,
overwrite=overwrite,
check_bbox=False)
return True
# if it is socket exception, we should raise it, because there is
# something wrong with the url
except socket.error as e:
logger.error('Thumbnail url not accessed {url}'.format(
url=thumbnail_remote_url))
logger.exception(e)
# reraise exception with original traceback
raise
except Exception as e:
logger.exception(e)
return False
def create_qgis_server_thumbnail(instance, overwrite=False, bbox=None):
"""Task to update thumbnails.
This task will formulate OGC url to generate thumbnail and then pass it
to geonode
:param instance: Resource instance, can be a layer or map
:type instance: Layer, Map
:param overwrite: set True to overwrite
:type overwrite: bool
:param bbox: Bounding box of thumbnail in 4 tuple format
[xmin,ymin,xmax,ymax]
:type bbox: list(float)
:return:
"""
thumbnail_remote_url = None
try:
# to make sure it is executed after the instance saved
if isinstance(instance, Layer):
thumbnail_remote_url = layer_thumbnail_url(
instance, bbox=bbox, internal=False)
elif isinstance(instance, Map):
thumbnail_remote_url = map_thumbnail_url(
instance, bbox=bbox, internal=False)
else:
# instance type does not have associated thumbnail
return True
if not thumbnail_remote_url:
return True
logger.debug('Create thumbnail for %s' % thumbnail_remote_url)
if overwrite:
# if overwrite, then delete existing thumbnail links
instance.link_set.filter(
resource=instance.get_self_resource(),
name="Remote Thumbnail").delete()
instance.link_set.filter(
resource=instance.get_self_resource(),
name="Thumbnail").delete()
create_thumbnail(
instance, thumbnail_remote_url,
overwrite=overwrite, check_bbox=False)
return True
# if it is socket exception, we should raise it, because there is
# something wrong with the url
except socket.error as e:
logger.error('Thumbnail url not accessed {url}'.format(
url=thumbnail_remote_url))
logger.exception(e)
# reraise exception with original traceback
raise
except Exception as e:
logger.exception(e)
return False