An example in python on using the Stackdriver Monitoring API to query your Firebase Realtime Database's average load over the past day

rtdb_load.py

# Copyright 2017 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
#
# https://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.

"""
This is an example script that will download the latest 24 hours of
your realtime database load and tell you the average utilization
of you database instance.

The metric for your database's load is a percentage of the last
1 minute that it was busy processing requests.
"""

try:
  from google.cloud import monitoring
  from google.cloud.monitoring.metric import MetricKind, ValueType
except ImportError:
  print "Please run 'pip install google-cloud'"
  import sys
  sys.exit(1)

def main():
  """
    See: https://googlecloudplatform.github.io/google-cloud-python/stable/monitoring-usage.html
    for more example and documentation on how the monitoring API for python.
  """
  # This is the GCP project tied to your firebase project
  client = monitoring.Client(project = 'rockwood-test')
  # This is from the following link:
  # https://cloud.google.com/monitoring/api/metrics#gcp-firebasedatabase
  METRIC = 'firebasedatabase.googleapis.com/io/utilization'
  query = client.query(METRIC, days=1)
  # We should only get back a single timeseries from
  # this query, with the metric that we want.
  for timeseries in query:
    assert timeseries.metric_kind == MetricKind.GAUGE
    assert timeseries.value_type == ValueType.DOUBLE
    total = 0
    size = 0
    for point in timeseries.points:
      total += point.value * 100.0 # Convert to percent
      size += 1
    average = round(total / size, 2)
    print "Your database's average load is", average, "%"

if __name__ == '__main__':
  main()