private void createAnalysisListeners(Layer layer) {
        factoryManager.getLogAnalysisListenerFactories()
                      .stream()
                      .map(factory -> factory.create(layer))
                      .filter(Objects::nonNull)
                      .forEach(listeners::add);
    }
Analyze the collected log data, is the entry point for log analysis.
oap-server/analyzer/log-analyzer/src/main/java/org/apache/skywalking/oap/log/analyzer/provider/log/LogAnalyzer.java