For pre-initialization phase use console only

Added basic-* log configuration files that are loaded in the
beforeInitialization() phase. They don't contain any file
logger so no empty spring.log is ever created.

Fixes gh-303

spring-boot/src/main/java/org/springframework/boot/logging/AbstractLoggingSystem.java

@@ -54,10 +54,12 @@ public abstract class AbstractLoggingSystem extends LoggingSystem {
 				return;
 			}
 		}
+		// Fallback to the non-prefixed value
+		initialize(getPackagedConfigFile(this.paths[this.paths.length - 1]));
 	}
 
 	protected void initializeWithSensibleDefaults() {
-		initialize(getPackagedConfigFile(this.paths[this.paths.length - 1]));
+		initialize(getPackagedConfigFile("basic-" + this.paths[this.paths.length - 1]));
 	}
 
 	protected final String getPackagedConfigFile(String fileName) {

spring-boot/src/main/resources/org/springframework/boot/logging/java/basic-logging.properties

+handlers = java.util.logging.ConsoleHandler
+.level = INFO
+
+java.util.logging.ConsoleHandler.formatter = org.springframework.boot.logging.java.SimpleFormatter
+java.util.logging.ConsoleHandler.level = ALL
+
+org.hibernate.validator.internal.util.Version.level = WARNING
+org.apache.coyote.http11.Http11NioProtocol.level = WARNING
+org.crsh.plugin.level = WARNING
+org.apache.tomcat.util.net.NioSelectorPool.level = WARNING
+org.apache.catalina.startup.DigesterFactory.level = SEVERE

spring-boot/src/main/resources/org/springframework/boot/logging/log4j/basic-log4j.properties

+log4j.rootCategory=INFO, CONSOLE, FILE
+
+PID=????
+LOG_PATTERN=[%d{yyyy-MM-dd HH:mm:ss.SSS}] boot%X{context} - ${PID} %5p [%t] --- %c{1}: %m%n
+
+# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
+log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
+log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
+log4j.appender.CONSOLE.layout.ConversionPattern=${LOG_PATTERN}
+
+log4j.category.org.hibernate.validator.internal.util.Version=WARN
+log4j.category.org.apache.coyote.http11.Http11NioProtocol=WARN
+log4j.category.org.crsh.plugin=WARN
+log4j.category.org.apache.tomcat.util.net.NioSelectorPool=WARN
+log4j.category.org.apache.catalina.startup.DigesterFactory=ERROR

spring-boot/src/main/resources/org/springframework/boot/logging/logback/base.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <included>
-	<property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-/tmp/}spring.log}"/>
-	<property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${PID:- } [%t] --- %-40.40logger{39} : %m%n%wex"/>
-	<property name="CONSOLE_LOG_PATTERN" value="%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t{14}]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wex"/>
 
-	<conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
-	<conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
+	<include resource="org/springframework/boot/logging/logback/default-logback.xml"/>	
 
-	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
-		<encoder>
-			<pattern>${CONSOLE_LOG_PATTERN}</pattern>
-		</encoder>
-	</appender>
+	<property name="LOG_FILE" value="${LOG_FILE:-${LOG_PATH:-/tmp/}spring.log}"/>
+	<property name="FILE_LOG_PATTERN" value="%d{yyyy-MM-dd HH:mm:ss.SSS} %5p ${PID:- } [%t] --- %-40.40logger{39} : %m%n%wex"/>
 
 	<appender name="FILE"
 		class="ch.qos.logback.core.rolling.RollingFileAppender">
@@ -28,22 +21,9 @@
 		</triggeringPolicy>
 	</appender>
 
-	<appender name="DEBUG_LEVEL_REMAPPER" class="org.springframework.boot.logging.logback.LevelRemappingAppender">
-	   <destinationLogger>org.springframework.boot</destinationLogger>
-	</appender>
-
 	<root level="INFO">
 		<appender-ref ref="CONSOLE" />
 		<appender-ref ref="FILE" />
 	</root>
 
-	<logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
-	<logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
-	<logger name="org.crsh.plugin" level="WARN"/>
-	<logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
-	<logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
-	<logger name="org.thymeleaf" additivity="false">
-		<appender-ref ref="DEBUG_LEVEL_REMAPPER"/>
-	</logger>
-
 </included>

spring-boot/src/main/resources/org/springframework/boot/logging/logback/basic-logback.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<included>
+	<property name="CONSOLE_LOG_PATTERN" value="%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t{14}]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wex"/>
+
+	<conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
+	<conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
+
+	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>${CONSOLE_LOG_PATTERN}</pattern>
+		</encoder>
+	</appender>
+
+	<appender name="DEBUG_LEVEL_REMAPPER" class="org.springframework.boot.logging.logback.LevelRemappingAppender">
+	   <destinationLogger>org.springframework.boot</destinationLogger>
+	</appender>
+
+	<root level="INFO">
+		<appender-ref ref="CONSOLE" />
+	</root>
+
+	<logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
+	<logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
+	<logger name="org.crsh.plugin" level="WARN"/>
+	<logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
+	<logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
+	<logger name="org.thymeleaf" additivity="false">
+		<appender-ref ref="DEBUG_LEVEL_REMAPPER"/>
+	</logger>
+
+</included>
\ No newline at end of file

spring-boot/src/test/java/org/springframework/boot/logging/LoggingApplicationListenerTests.java

@@ -72,6 +72,7 @@ public class LoggingApplicationListenerTests {
 		this.initializer.onApplicationEvent(new ApplicationStartedEvent(
 				new SpringApplication(), NO_ARGS));
 		new File("target/foo.log").delete();
+		new File("/tmp/spring.log").delete();
 	}
 
 	@After
@@ -85,13 +86,14 @@ public class LoggingApplicationListenerTests {
 	}
 
 	@Test
-	public void testDefaultConfigLocation() {
+	public void testBaseConfigLocation() {
 		this.initializer.initialize(this.context.getEnvironment(),
 				this.context.getClassLoader());
 		this.logger.info("Hello world");
 		String output = this.outputCapture.toString().trim();
 		assertTrue("Wrong output:\n" + output, output.contains("Hello world"));
 		assertFalse("Wrong output:\n" + output, output.contains("???"));
+		assertTrue(new File("/tmp/spring.log").exists());
 	}
 
 	@Test

spring-boot/src/test/java/org/springframework/boot/logging/logback/LogbackLoggingSystemTests.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.logging.logback;
 
+import java.io.File;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.impl.SLF4JLogFactory;
 import org.junit.After;
@@ -27,6 +29,7 @@ import org.springframework.boot.test.OutputCapture;
 import org.springframework.util.StringUtils;
 
 import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 
@@ -48,6 +51,7 @@ public class LogbackLoggingSystemTests {
 	@Before
 	public void setup() {
 		this.logger = new SLF4JLogFactory().getInstance(getClass().getName());
+		new File("/tmp/spring.log").delete();
 	}
 
 	@After
@@ -65,6 +69,7 @@ public class LogbackLoggingSystemTests {
 		String output = this.output.toString().trim();
 		assertTrue("Wrong output:\n" + output, output.contains("Hello world"));
 		assertTrue("Wrong output:\n" + output, output.contains("/tmp/spring.log"));
+		assertFalse(new File("/tmp/spring.log").exists());
 	}
 
 	@Test(expected = IllegalStateException.class)