Redirecting apm-webapp log to rotatable file (#1119)

fix #931 

apm-dist/bin/webappService.bat

@@ -20,6 +20,13 @@ setlocal
 set WEBAPP_PROCESS_TITLE=Skywalking-Webapp
 set WEBAPP_HOME=%~dp0%..
 set JARPATH=%WEBAPP_HOME%\webapp
+set WEBAPP_LOG_DIR=%WEBAPP_HOME%\logs
+
+if exist "%WEBAPP_LOG_DIR%" (
+    mkdir "%WEBAPP_LOG_DIR%"
+)
+
+set LOG_FILE_LOCATION=%WEBAPP_LOG_DIR%\webapp.log
 
 if defined JAVA_HOME (
  set _EXECJAVA="%JAVA_HOME:"=%"\bin\java
@@ -30,5 +37,5 @@ if not defined JAVA_HOME (
  set _EXECJAVA=java
 )
 
-start "%WEBAPP_PROCESS_TITLE%" %_EXECJAVA%  -jar %JARPATH%/skywalking-webapp.jar --server.port=8080 --collector.ribbon.listOfServers=127.0.0.1:10800
+start "%WEBAPP_PROCESS_TITLE%" %_EXECJAVA%  -jar %JARPATH%/skywalking-webapp.jar --server.port=8080 --collector.ribbon.listOfServers=127.0.0.1:10800   --logging.file=%LOG_FILE_LOCATION%
 endlocal

apm-dist/bin/webappService.sh

@@ -28,12 +28,15 @@ if [ ! -d "${WEBAPP_HOME}/logs" ]; then
     mkdir -p "${WEBAPP_LOG_DIR}"
 fi
 
+LOG_FILE_LOCATION=${WEBAPP_LOG_DIR}/webapp.log
+
 _RUNJAVA=${JAVA_HOME}/bin/java
 [ -z "$JAVA_HOME" ] && _RUNJAVA=java
 
 eval exec "\"$_RUNJAVA\" ${JAVA_OPTS} -jar ${JAR_PATH}/skywalking-webapp.jar \
          --server.port=8080 --collector.ribbon.listOfServers=127.0.0.1:10800 \
-        2>${WEBAPP_LOG_DIR}/webapp.log 1> /dev/null &"
+         --logging.file=${LOG_FILE_LOCATION} \
+        2>${WEBAPP_LOG_DIR}/webapp-console.log 1> /dev/null &"
 
 if [ $? -eq 0 ]; then
     sleep 1

apm-webapp/src/main/resources/logback-spring.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+<configuration>
+    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
+    <property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-${LOG_TEMP:-${java.io.tmpdir:-/tmp}}/}spring.log}"/>
+    <include resource="org/springframework/boot/logging/logback/file-appender.xml" />
+    <root level="INFO">
+        <appender-ref ref="FILE" />
+    </root>
+</configuration>
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