class TileRecord(object):
# pylint: disable=too-many-instance-attributes
"""TileRecord database interface class."""
TILE_METADATA_FIELDS = ['tile_id',
'x_index',
'y_index',
'tile_type_id',
'dataset_id',
'tile_pathname',
'tile_class_id',
'tile_size',
'ctime'
]
def __init__(self, collection, dataset_record, tile_contents):
self.collection = collection
self.datacube = collection.datacube
self.dataset_record = dataset_record
self.tile_contents = tile_contents
self.tile_footprint = tile_contents.tile_footprint
self.tile_type_id = tile_contents.tile_type_id
#Set tile_class_id to pending.
self.tile_class_id = TC_PENDING
#Set tile_id, determined below from database query
self.tile_id = None
self.db = IngestDBWrapper(self.datacube.db_connection)
# Fill a dictionary with data for the tile
tile_dict = {}
self.tile_dict = tile_dict
tile_dict['x_index'] = self.tile_footprint[0]
tile_dict['y_index'] = self.tile_footprint[1]
tile_dict['tile_type_id'] = self.tile_type_id
tile_dict['dataset_id'] = self.dataset_record.dataset_id
# Store final destination in the 'tile_pathname' field
tile_dict['tile_pathname'] = self.tile_contents.tile_output_path
tile_dict['tile_class_id'] = 1
# The physical file is currently in the temporary location
tile_dict['tile_size'] = \
get_file_size_mb(self.tile_contents
.temp_tile_output_path)
self.update_tile_footprint()
# Make the tile record entry on the database:
self.tile_id = self.db.get_tile_id(tile_dict)
if self.tile_id is None:
self.tile_id = self.db.insert_tile_record(tile_dict)
else:
# If there was any existing tile corresponding to tile_dict then
# it should already have been removed.
raise AssertionError("Attempt to recreate an existing tile.")
tile_dict['tile_id'] = self.tile_id
def update_tile_footprint(self):
"""Update the tile footprint entry in the database"""
if not self.db.tile_footprint_exists(self.tile_dict):
# We may need to create a new footprint record.
footprint_dict = {'x_index': self.tile_footprint[0],
'y_index': self.tile_footprint[1],
'tile_type_id': self.tile_type_id,
'x_min': self.tile_contents.tile_extents[0],
'y_min': self.tile_contents.tile_extents[1],
'x_max': self.tile_contents.tile_extents[2],
'y_max': self.tile_contents.tile_extents[3],
'bbox': 'Populate this within sql query?'}
# Create an independent database connection for this transaction.
my_db = IngestDBWrapper(self.datacube.create_connection())
try:
with self.collection.transaction(my_db):
if not my_db.tile_footprint_exists(self.tile_dict):
my_db.insert_tile_footprint(footprint_dict)
except psycopg2.IntegrityError:
# If we get an IntegrityError we assume the tile_footprint
# is already in the database, and we do not need to add it.
pass
finally:
my_db.close()
class TileRecord(object):
# pylint: disable=too-many-instance-attributes
"""TileRecord database interface class."""
TILE_METADATA_FIELDS = [
'tile_id', 'x_index', 'y_index', 'tile_type_id', 'dataset_id',
'tile_pathname', 'tile_class_id', 'tile_size', 'ctime'
]
def __init__(self, collection, dataset_record, tile_contents):
self.collection = collection
self.datacube = collection.datacube
self.dataset_record = dataset_record
self.tile_contents = tile_contents
self.tile_footprint = tile_contents.tile_footprint
self.tile_type_id = tile_contents.tile_type_id
#Set tile_class_id to pending.
self.tile_class_id = TC_PENDING
#Set tile_id, determined below from database query
self.tile_id = None
self.db = IngestDBWrapper(self.datacube.db_connection)
# Fill a dictionary with data for the tile
tile_dict = {}
self.tile_dict = tile_dict
tile_dict['x_index'] = self.tile_footprint[0]
tile_dict['y_index'] = self.tile_footprint[1]
tile_dict['tile_type_id'] = self.tile_type_id
tile_dict['dataset_id'] = self.dataset_record.dataset_id
# Store final destination in the 'tile_pathname' field
tile_dict['tile_pathname'] = self.tile_contents.tile_output_path
tile_dict['tile_class_id'] = 1
# The physical file is currently in the temporary location
tile_dict['tile_size'] = \
get_file_size_mb(self.tile_contents
.temp_tile_output_path)
self.update_tile_footprint()
# Make the tile record entry on the database:
self.tile_id = self.db.get_tile_id(tile_dict)
if self.tile_id is None:
self.tile_id = self.db.insert_tile_record(tile_dict)
else:
# If there was any existing tile corresponding to tile_dict then
# it should already have been removed.
raise AssertionError("Attempt to recreate an existing tile.")
tile_dict['tile_id'] = self.tile_id
def update_tile_footprint(self):
"""Update the tile footprint entry in the database"""
if not self.db.tile_footprint_exists(self.tile_dict):
# We may need to create a new footprint record.
footprint_dict = {
'x_index': self.tile_footprint[0],
'y_index': self.tile_footprint[1],
'tile_type_id': self.tile_type_id,
'x_min': self.tile_contents.tile_extents[0],
'y_min': self.tile_contents.tile_extents[1],
'x_max': self.tile_contents.tile_extents[2],
'y_max': self.tile_contents.tile_extents[3],
'bbox': 'Populate this within sql query?'
}
# Create an independent database connection for this transaction.
my_db = IngestDBWrapper(self.datacube.create_connection())
try:
with self.collection.transaction(my_db):
if not my_db.tile_footprint_exists(self.tile_dict):
my_db.insert_tile_footprint(footprint_dict)
except psycopg2.IntegrityError:
# If we get an IntegrityError we assume the tile_footprint
# is already in the database, and we do not need to add it.
pass
finally:
my_db.close()