chore: Improve logging format for debugging OOM issues (#29330)

Fixes #29114

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
  - Enhanced logging capabilities for better performance insights.

- **Improvements**
- Increased the number of log file backups to ensure more historical
data is preserved.

- **Documentation**
- Updated internal documentation to reflect new logging and performance
monitoring features.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/server/appsmith-server/pom.xml

@@ -41,6 +41,12 @@
     </dependencyManagement>
 
     <dependencies>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-tools</artifactId>
+            <version>3.6.0</version>
+            <classifier>original</classifier>
+        </dependency>
         <dependency>
             <groupId>io.opentelemetry</groupId>
             <artifactId>opentelemetry-api</artifactId>

app/server/appsmith-server/src/main/java/com/appsmith/server/ServerApplication.java

@@ -4,6 +4,7 @@ import io.micrometer.observation.ObservationRegistry;
 import io.micrometer.observation.aop.ObservedAspect;
 import io.opentelemetry.api.OpenTelemetry;
 import io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.boot.Banner;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -11,14 +12,26 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.context.annotation.Bean;
 import org.springframework.scheduling.annotation.EnableScheduling;
+import reactor.tools.agent.ReactorDebugAgent;
 
 import static com.appsmith.server.constants.EnvVariables.APPSMITH_NEW_RELIC_ACCOUNT_ENABLE;
+import static com.appsmith.server.constants.EnvVariables.APPSMITH_VERBOSE_LOGGING_ENABLED;
 
 @SpringBootApplication
 @EnableScheduling
+@Slf4j
 public class ServerApplication {
 
     public static void main(String[] args) {
+        String loggingEnabled = System.getenv(String.valueOf(APPSMITH_VERBOSE_LOGGING_ENABLED));
+
+        if ("true".equalsIgnoreCase(loggingEnabled)) {
+            log.info("Enabling Reactor Debug Agent enabled");
+            ReactorDebugAgent.init();
+        } else {
+            log.info("Reactor Debug Agent not enabled");
+        }
+
         new SpringApplicationBuilder(ServerApplication.class)
                 .bannerMode(Banner.Mode.OFF)
                 .run(args);

app/server/appsmith-server/src/main/java/com/appsmith/server/performancelogging/PerformanceLoggingHandler.java

@@ -1,5 +1,6 @@
 package com.appsmith.server.performancelogging;
 
+import io.micrometer.common.KeyValue;
 import io.micrometer.observation.Observation;
 import io.micrometer.observation.Observation.Context;
 import io.micrometer.observation.ObservationHandler;
@@ -7,13 +8,44 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.stereotype.Component;
 
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryMXBean;
+
 @Component
 @Slf4j
 @ConditionalOnExpression("${logging.verbose.enabled}")
 class PerformanceLoggingHandler implements ObservationHandler<Observation.Context> {
     @Override
     public void onStart(Context context) {
-        context.put("executionTime", System.currentTimeMillis());
+        if (needsLogStatement(context)) {
+            context.put("executionTime", System.currentTimeMillis());
+
+            KeyValue url = context.getHighCardinalityKeyValue("http.url");
+            String urlName = url == null ? "null" : url.getValue();
+            log.info("Execution Started : {}, Context : {}, {}", context.getName(), urlName, memoryFootprint());
+        }
+    }
+
+    private String memoryFootprint() {
+        MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
+
+        return String.format(
+                "Initial memory: %.2f GB, Used heap memory: %.2f GB, Max heap memory: %.2f GB, Committed memory: %.2f GB",
+                (double) memoryMXBean.getHeapMemoryUsage().getInit() / 1073741824,
+                (double) memoryMXBean.getHeapMemoryUsage().getUsed() / 1073741824,
+                (double) memoryMXBean.getHeapMemoryUsage().getMax() / 1073741824,
+                (double) memoryMXBean.getHeapMemoryUsage().getCommitted() / 1073741824);
+    }
+
+    private Boolean needsLogStatement(Context context) {
+        String name = context.getName();
+        if (name.equals("spring.security.authorizations")
+                || name.equals("spring.security.filterchains")
+                || name.equals("spring.security.http.secured.requests")) {
+            return false;
+        } else {
+            return true;
+        }
     }
 
     @Override
@@ -23,13 +55,20 @@ class PerformanceLoggingHandler implements ObservationHandler<Observation.Contex
 
     @Override
     public void onStop(Context context) {
-        long startTime = context.getOrDefault("executionTime", 0L);
-        long executionTime = System.currentTimeMillis() - startTime;
-        log.info(
-                "Execution Complete: {} | Total Time Taken: {} ms | Context: {}",
-                context.getName(),
-                executionTime,
-                context.toString());
+        if (needsLogStatement(context)) {
+            long startTime = context.getOrDefault("executionTime", 0L);
+            long executionTime = System.currentTimeMillis() - startTime;
+
+            KeyValue url = context.getHighCardinalityKeyValue("http.url");
+            String urlName = url == null ? "null" : url.getValue();
+
+            log.info(
+                    "Execution Complete: {} | Total Time Taken: {} ms | Context: {}, {}",
+                    context.getName(),
+                    executionTime,
+                    urlName,
+                    memoryFootprint());
+        }
     }
 
     @Override

deploy/docker/fs/opt/appsmith/templates/supervisord/application_process/backend.conf

@@ -10,7 +10,7 @@ stdout_logfile=/appsmith-stacks/logs/%(program_name)s/%(program_name)s-%(ENV_HOS
 redirect_stderr=true
 stdout_logfile_maxbytes=10MB
 stderr_logfile_maxbytes=10MB
-stdout_logfile_backups=2
-stderr_logfile_backups=2
+stdout_logfile_backups=10
+stderr_logfile_backups=10
 stdout_events_enabled=true
 stderr_events_enabled=true