Allow to configure Tomcat's renameOnRotate property

Closes gh-5981

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/ServerProperties.java

@@ -907,6 +907,7 @@ public class ServerProperties
 			valve.setDirectory(this.accesslog.getDirectory());
 			valve.setPrefix(this.accesslog.getPrefix());
 			valve.setSuffix(this.accesslog.getSuffix());
+			valve.setRenameOnRotate(this.accesslog.isRenameOnRotate());
 			factory.addContextValves(valve);
 		}
 
@@ -938,6 +939,11 @@ public class ServerProperties
 			 */
 			private String suffix = ".log";
 
+			/**
+			 * Defer inclusion of the date stamp in the file name until rotate time.
+			 */
+			private boolean renameOnRotate;
+
 			public boolean isEnabled() {
 				return this.enabled;
 			}
@@ -977,6 +983,15 @@ public class ServerProperties
 			public void setSuffix(String suffix) {
 				this.suffix = suffix;
 			}
+
+			public boolean isRenameOnRotate() {
+				return this.renameOnRotate;
+			}
+
+			public void setRenameOnRotate(boolean renameOnRotate) {
+				this.renameOnRotate = renameOnRotate;
+			}
+
 		}
 
 	}

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/ServerPropertiesTests.java

@@ -133,6 +133,7 @@ public class ServerPropertiesTests {
 		Map<String, String> map = new HashMap<String, String>();
 		map.put("server.tomcat.accesslog.pattern", "%h %t '%r' %s %b");
 		map.put("server.tomcat.accesslog.prefix", "foo");
+		map.put("server.tomcat.accesslog.rename-on-rotate", "true");
 		map.put("server.tomcat.accesslog.suffix", "-bar.log");
 		map.put("server.tomcat.protocol_header", "X-Forwarded-Protocol");
 		map.put("server.tomcat.remote_ip_header", "Remote-Ip");
@@ -141,6 +142,7 @@ public class ServerPropertiesTests {
 		ServerProperties.Tomcat tomcat = this.properties.getTomcat();
 		assertThat(tomcat.getAccesslog().getPattern()).isEqualTo("%h %t '%r' %s %b");
 		assertThat(tomcat.getAccesslog().getPrefix()).isEqualTo("foo");
+		assertThat(tomcat.getAccesslog().isRenameOnRotate()).isTrue();
 		assertThat(tomcat.getAccesslog().getSuffix()).isEqualTo("-bar.log");
 		assertThat(tomcat.getRemoteIpHeader()).isEqualTo("Remote-Ip");
 		assertThat(tomcat.getProtocolHeader()).isEqualTo("X-Forwarded-Protocol");

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -198,6 +198,7 @@ content into your application; rather pick only the properties that you need.
 	server.tomcat.accesslog.enabled=false # Enable access log.
 	server.tomcat.accesslog.pattern=common # Format pattern for access logs.
 	server.tomcat.accesslog.prefix=access_log # Log file name prefix.
+	server.tomcat.accesslog.rename-on-rotate=false # Defer inclusion of the date stamp in the file name until rotate time.
 	server.tomcat.accesslog.suffix=.log # Log file name suffix.
 	server.tomcat.background-processor-delay=30 # Delay in seconds between the invocation of backgroundProcess methods.
 	server.tomcat.basedir= # Tomcat base directory. If not specified a temporary directory will be used.