Examples with MetricSearcher com.alibaba.csp.sentinel.node.metric.MetricSearcher used on opensource projects

Example 1 with MetricSearcher

use of com.alibaba.csp.sentinel.node.metric.MetricSearcher in project Sentinel by alibaba.

the class SendMetricCommandHandler method handle.

@Override
public CommandResponse<String> handle(CommandRequest request) {
    // Note: not thread-safe.
    if (searcher == null) {
        synchronized (lock) {
            String appName = SentinelConfig.getAppName();
            if (appName == null) {
                appName = "";
            }
            if (searcher == null) {
                searcher = new MetricSearcher(MetricWriter.METRIC_BASE_DIR, MetricWriter.formMetricFileName(appName, PidUtil.getPid()));
            }
        }
    }
    String startTimeStr = request.getParam("startTime");
    String endTimeStr = request.getParam("endTime");
    String maxLinesStr = request.getParam("maxLines");
    String identity = request.getParam("identity");
    long startTime = -1;
    int maxLines = 6000;
    if (StringUtil.isNotBlank(startTimeStr)) {
        startTime = Long.parseLong(startTimeStr);
    } else {
        return CommandResponse.ofSuccess("");
    }
    List<MetricNode> list;
    try {
        // Find by end time if set.
        if (StringUtil.isNotBlank(endTimeStr)) {
            long endTime = Long.parseLong(endTimeStr);
            list = searcher.findByTimeAndResource(startTime, endTime, identity);
        } else {
            if (StringUtil.isNotBlank(maxLinesStr)) {
                maxLines = Integer.parseInt(maxLinesStr);
            }
            maxLines = Math.min(maxLines, 12000);
            list = searcher.find(startTime, maxLines);
        }
    } catch (Exception ex) {
        return CommandResponse.ofFailure(new RuntimeException("Error when retrieving metrics", ex));
    }
    if (list == null) {
        list = new ArrayList<>();
    }
    if (StringUtil.isBlank(identity)) {
        addCpuUsageAndLoad(list);
    }
    StringBuilder sb = new StringBuilder();
    for (MetricNode node : list) {
        sb.append(node.toThinString()).append("\n");
    }
    return CommandResponse.ofSuccess(sb.toString());
}