in java/metric-scaler/src/main/java/com/example/bigtable/scaler/MetricScaler.java [130:139]
public MetricScaler(String projectId, String instanceId)
throws GeneralSecurityException, IOException {
clusterUtility = BigtableClusterUtilities.forInstance(projectId, instanceId);
Cluster cluster = clusterUtility.getSingleCluster();
this.clusterId = new BigtableClusterName(cluster.getName()).getClusterId();
this.zoneId = BigtableClusterUtilities.getZoneId(cluster);
// Instantiates a client
metricServiceClient = MetricServiceClient.create();
projectName = ProjectName.create(projectId);
}