You can easily get log lines from Stackdriver with the
gcloud CLI. Tack on
jq to count the lines for a quick way to get a sense of log volume.
In this example, we're counting lines ingested from a Kubernetes cluster, but you can query whatever types of lines you like, but watch out for the
timestamp! If you have a large volume of logs, this operation could take a long time.
gcloud logging read 'resource.type=container AND
textPayload:"your operation failed" AND
timestamp>="2020-07-01T00:00:00Z"' --format=json | jq '. | length'