protected String formatCpu()

in karavan-web/karavan-app/src/main/java/org/apache/camel/karavan/docker/DockerServiceUtils.java [202:228]

• 24 lines of code
• 9 McCabe index (conditional complexity)

    protected String formatCpu(String containerName, Statistics stats) {
        try {
            double cpuUsage = 0;
            long previousCpu = previousStats.containsKey(containerName) ? previousStats.get(containerName).getItem1() : -1;
            long previousSystem = previousStats.containsKey(containerName) ? previousStats.get(containerName).getItem2() : -1;

            CpuStatsConfig cpuStats = stats.getCpuStats();
            if (cpuStats != null) {
                CpuUsageConfig cpuUsageConfig = cpuStats.getCpuUsage();
                long systemUsage = cpuStats.getSystemCpuUsage();
                long totalUsage = cpuUsageConfig.getTotalUsage();

                if (previousCpu != -1 && previousSystem != -1) {
                    float cpuDelta = totalUsage - previousCpu;
                    float systemDelta = systemUsage - previousSystem;

                    if (cpuDelta > 0 && systemDelta > 0) {
                        cpuUsage = cpuDelta / systemDelta * cpuStats.getOnlineCpus() * 100;
                    }
                }
                previousStats.put(containerName, Tuple2.of(totalUsage, systemUsage));
            }
            return formatCpu.format(cpuUsage) + "%";
        } catch (Exception e) {
            return "";
        }
    }