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# Copyright 2024 Google LLC
#
# 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 memorystorememcache_quickstart]
import uuid
from google.api_core.exceptions import NotFound
from google.cloud import memcache_v1
def create_instance(project_id: str, location_id: str, instance_id: str) -> None:
"""
Creates a Memcached instance.
project_id: ID or number of the Google Cloud project you want to use.
location_id: A GCP region, where instance is going to be located.
instance_id: Unique id of the instance. Must be unique within the user project / location.
"""
client = memcache_v1.CloudMemcacheClient()
parent = f"projects/{project_id}/locations/{location_id}"
instance = memcache_v1.Instance()
instance.name = "memcache_instance_name"
instance.node_count = 1
instance.node_config.cpu_count = 1
instance.node_config.memory_size_mb = 1024
request = memcache_v1.CreateInstanceRequest(
parent=parent,
instance_id=instance_id,
instance=instance,
)
print(f"Creating instance {instance_id}...")
operation = client.create_instance(request=request)
operation.result()
print(f"Instance {instance_id} was created")
def get_instance(project_id: str, location_id: str, instance_id: str) -> memcache_v1.Instance:
"""
Get a Memcached instance.
project_id: ID or number of the Google Cloud project you want to use.
location_id: A GCP region, where instance is located.
instance_id: Unique id of the instance. Must be unique within the user project / location.
"""
client = memcache_v1.CloudMemcacheClient()
name = f"projects/{project_id}/locations/{location_id}/instances/{instance_id}"
request = memcache_v1.GetInstanceRequest(
name=name
)
try:
instance = client.get_instance(request=request)
return instance
except NotFound:
print("Instance wasn't found")
def update_instance(instance: memcache_v1.Instance, display_name: str) -> None:
"""
Updates a Memcached instance.
instance_id: Unique id of the instance. Must be unique within the user project / location.
display_name: New name of the instance to be set.
"""
client = memcache_v1.CloudMemcacheClient()
instance.display_name = display_name
request = memcache_v1.UpdateInstanceRequest(
update_mask="displayName",
instance=instance,
)
operation = client.update_instance(request=request)
result = operation.result()
print(f"New name is: {result.display_name}")
def delete_instance(project_id: str, location_id: str, instance_id: str) -> None:
"""
Deletes a Memcached instance.
project_id: ID or number of the Google Cloud project you want to use.
location_id: A GCP region, where instance is located.
instance_id: Unique id of the instance. Must be unique within the user project / location.
"""
client = memcache_v1.CloudMemcacheClient()
name = f"projects/{project_id}/locations/{location_id}/instances/{instance_id}"
request = memcache_v1.DeleteInstanceRequest(
name=name
)
try:
operation = client.delete_instance(request=request)
operation.result()
print(f"Instance {instance_id} was deleted")
except NotFound:
print("Instance wasn't found")
def quickstart(project_id: str, location_id: str, instance_id: str) -> None:
"""
Briefly demonstrates a full lifecycle of the Memcached instances.
project_id: ID or number of the Google Cloud project you want to use.
location_id: A GCP region, where instance is located.
instance_id: Unique id of the instance. Must be unique within the user project / location.
"""
create_instance(project_id, location_id, instance_id)
instance = get_instance(project_id, location_id, instance_id)
update_instance(instance, "new_name")
delete_instance(project_id, location_id, instance_id)
# [END memorystorememcache_quickstart]
if __name__ == "__main__":
# Note: To run the sample private connection should be enabled
# https://cloud.google.com/vpc/docs/configure-private-services-access
#
# Permissions needed:
# - Compute Network Admin (servicenetworking.services.addPeering)
# - Cloud Memorystore Memcached Admin (memcache.*)
import google.auth
PROJECT = google.auth.default()[1]
instance_id = f"memcache-{uuid.uuid4().hex[:10]}"
location_id = "us-central1"
quickstart(PROJECT, location_id, instance_id)