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utils.py
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75 lines (60 loc) · 2.06 KB
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#
# This software is licensed under the Apache 2 license, quoted below.
#
# Copyright 2019 Astraea, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# [http://www.apache.org/licenses/LICENSE-2.0]
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.
#
# SPDX-License-Identifier: Apache-2.0
#
from typing import Dict, Optional
from pyspark import SparkConf
from pyspark.sql import SparkSession
from . import RFContext
__all__ = [
"create_rf_spark_session",
"gdal_version",
"gdal_version",
"build_info",
"quiet_logs",
]
def quiet_logs(sc):
logger = sc._jvm.org.apache.log4j
logger.LogManager.getLogger("geotrellis.raster.gdal").setLevel(logger.Level.ERROR)
logger.LogManager.getLogger("akka").setLevel(logger.Level.ERROR)
def create_rf_spark_session(master="local[*]", **kwargs: str) -> Optional[SparkSession]:
"""
Create a SparkSession with pyrasterframes enabled and configured.
Expects pyrasterframes-assembly-x.x.x.jar in JarPath
"""
conf = SparkConf().setAll([(k, kwargs[k]) for k in kwargs])
spark = (
SparkSession.builder.master(master)
.appName("RasterFrames")
.withKryoSerialization()
.config(conf=conf) # user can override the defaults
.getOrCreate()
)
quiet_logs(spark)
try:
spark.withRasterFrames()
return spark
except TypeError as te:
print("Error setting up SparkSession; cannot find the pyrasterframes assembly jar\n", te)
return None
def gdal_version() -> str:
fcn = RFContext.active().lookup("buildInfo")
return fcn()["GDAL"]
def build_info() -> Dict[str, str]:
fcn = RFContext.active().lookup("buildInfo")
return fcn()