#!/usr/bin/env python

# Copyright 2018 Google 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.

# [START bigtable_quickstart]

import argparse

from google.cloud import bigtable

def main(project_id="project-id", instance_id="instance-id", table_id="my-table"):

# Create a Cloud Bigtable client.

client = bigtable.Client(project=project_id)

# Connect to an existing Cloud Bigtable instance.

instance = client.instance(instance_id)

# Open an existing table.

table = instance.table(table_id)

row_key = "r1"

row = table.read_row(row_key.encode("utf-8"))

column_family_id = "cf1"

column_id = "c1".encode("utf-8")

value = row.cells[column_family_id][column_id][0].value.decode("utf-8")

print("Row key: {}\nData: {}".format(row_key, value))

if __name__ == "__main__":

parser = argparse.ArgumentParser(

description=__doc__, formatter_class=argparse.ArgumentDefaultsHelpFormatter

)

parser.add_argument("project_id", help="Your Cloud Platform project ID.")

parser.add_argument(

"instance_id", help="ID of the Cloud Bigtable instance to connect to."

)

parser.add_argument(

"--table", help="Existing table used in the quickstart.", default="my-table"

)

args = parser.parse_args()

main(args.project_id, args.instance_id, args.table)

# [END bigtable_quickstart]