in src/main/java/com/google/cloud/run/kafkascaler/MetricsService.java [62:72]
public MetricsService(CloudMonitoringClientWrapper cloudMonitoringClient, String projectId) {
Preconditions.checkNotNull(cloudMonitoringClient, "Cloud Monitoring Client cannot be null.");
if (Strings.isNullOrEmpty(projectId)) {
throw new IllegalArgumentException("Project ID cannot be null or empty.");
}
this.cloudMonitoringClient = cloudMonitoringClient;
this.projectName = ProjectName.of(projectId);
this.resourceLabels = ImmutableMap.of("project_id", projectId);
}