IssueTracker

What you would like to accomplish:

To get an error code and message while reading metric data aligned by mean using python that would be appropriate.

When the "name" [1]  field of a ListTimeSeriesRequest [2] is not in the correct format.

It is reporting a 500 which is misleading.


Steps to reproduce:

If you have a typo in the “project_name”(The customer used an organization which does not make a difference in the error [1].) in below code [2]:

from google.cloud import monitoring_v3

client = monitoring_v3.MetricServiceClient()
project_name = f"projects/{project_id}"

now = time.time()
seconds = int(now)
nanos = int((now - seconds) * 10**9)
interval = monitoring_v3.TimeInterval(
    {
        "end_time": {"seconds": seconds, "nanos": nanos},
        "start_time": {"seconds": (seconds - 3600), "nanos": nanos},
    }
)
aggregation = monitoring_v3.Aggregation(
    {
        "alignment_period": {"seconds": 1200},  # 20 minutes
        "per_series_aligner": monitoring_v3.Aggregation.Aligner.ALIGN_MEAN,
    }
)

results = client.list_time_series(
    request={
        "name": project_name,
        "filter": 'metric.type = "compute.googleapis.com/instance/cpu/utilization"',
        "interval": interval,
        "view": monitoring_v3.ListTimeSeriesRequest.TimeSeriesView.FULL,
        "aggregation": aggregation,
    }
)
for result in results:
    print(result)

Error below:
google.api_core.exceptions.InternalServerError: 500 Internal error
encountered. Please retry after a few seconds. If internal errors persist,
contact support at https://cloud.google.com/support/docs.


Reference:
[1]  https://cloud.google.com/python/docs/reference/monitoring/latest/google.cloud.monitoring_v3.types.ListTimeSeriesRequest#attributes 
[2] https://cloud.google.com/monitoring/docs/samples/monitoring-read-timeseries-align#code-sample