access log 기능 추가

src/main/java/com/bsmlab/dfx/agent/config/AccessLogConfiguration.java

@@ -0,0 +1,56 @@
+package com.bsmlab.dfx.agent.config;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.catalina.valves.AccessLogValve;
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Component;
+
+import java.io.File;
+import java.nio.file.Paths;
+import java.time.Duration;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class AccessLogConfiguration implements WebServerFactoryCustomizer<TomcatServletWebServerFactory> {
+    private final AgentConfigReader agentConfigReader;
+
+    /**
+     * Access log 설정
+     * @param factory
+     */
+    @Override
+    public void customize(TomcatServletWebServerFactory factory) {
+        AgentConfigDto agentConfigDto = this.agentConfigReader.getAgentConfigDto();
+        String logFilePath = Paths.get(agentConfigDto.getLogging().getLogDirectory(), "access").toString();
+        AccessLogValve accessLogValve = new AccessLogValve();
+        accessLogValve.setPattern("combined");
+        accessLogValve.setDirectory(logFilePath);
+        accessLogValve.setSuffix(".log");
+        accessLogValve.setRotatable(true);
+        accessLogValve.setRenameOnRotate(true);
+        accessLogValve.setFileDateFormat("yyyy-MM-dd");
+        accessLogValve.setRequestAttributesEnabled(true);
+        factory.addContextValves(accessLogValve);
+    }
+
+    /**
+     * Access log 삭제. 설정 파일의 maxHistory 기준
+     */
+    @Scheduled(cron = "0 0 3 * * *")
+    public void cleanAccessLog() {
+        AgentConfigDto agentConfigDto = this.agentConfigReader.getAgentConfigDto();
+        File logFileDirFile = new File(Paths.get(agentConfigDto.getLogging().getLogDirectory()).toString());
+        File[] files = logFileDirFile.listFiles((dir, name) -> name.startsWith("access."));
+        long maxHistory = agentConfigDto.getLogging().getMaxHistory();
+        long cutoff = System.currentTimeMillis() - Duration.ofDays(maxHistory).toMillis();
+        for(File file : files) {
+            if(file.lastModified() < cutoff) {
+                file.delete();
+            }
+        }
+    }
+}