From 8ba9e5bede083864bd34b3cd9f49528f13cdebeb Mon Sep 17 00:00:00 2001
From: Daniel Bevenius <daniel.bevenius@gmail.com>
Date: Sun, 9 Nov 2014 15:41:15 +0100
Subject: [PATCH] Add logLevel property to enable different log levels for the
 examples.

Motivation:

When running the examples using the provided run-examples.sh script the
log level is 'info' level. It can be handy to be able to configure a
different level, for example 'debug', while learning and trying out the
the examples.

Modifications:

Added a dependency to logback-classic to the examples pom.xml, and also
added a logback configuration file. The log level can be configured by
setting the 'logLevel' system property, and if that property is not set
the default will be 'info' level.
The run-examples.sh was updated to show an example of using the system
property to set the log level to 'debug'

Result:

It is now possible to turn on debug logging by settnig a system property
on the command line.
---
 example/pom.xml                        |  5 +++++
 example/src/main/resources/logback.xml | 11 +++++++++++
 run-example.sh                         |  1 +
 3 files changed, 17 insertions(+)
 create mode 100644 example/src/main/resources/logback.xml

diff --git a/example/pom.xml b/example/pom.xml
index eeb1aed1b9..dd993c00f0 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -109,6 +109,11 @@
       <artifactId>netty-transport-rxtx</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>ch.qos.logback</groupId>
+      <artifactId>logback-classic</artifactId>
+      <scope>runtime</scope>
+    </dependency>
   </dependencies>
 
   <build>
diff --git a/example/src/main/resources/logback.xml b/example/src/main/resources/logback.xml
new file mode 100644
index 0000000000..ea5238ed68
--- /dev/null
+++ b/example/src/main/resources/logback.xml
@@ -0,0 +1,11 @@
+<configuration debug="false">
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+
+  <root level="${logLevel:-info}">
+    <appender-ref ref="STDOUT" />
+  </root>
+</configuration>
diff --git a/run-example.sh b/run-example.sh
index b931bab17b..2e8f972bf6 100755
--- a/run-example.sh
+++ b/run-example.sh
@@ -66,6 +66,7 @@ if [[ -z "$EXAMPLE" ]] || [[ -z "$EXAMPLE_CLASS" ]] || [[ $# -ne 0 ]]; then
   echo "  Usage: $0 [-D<name>[=<value>] ...] <example-name>" >&2
   echo "Example: $0 -Dport=8443 -Dssl http-server" >&2
   echo "         $0 -Dhost=127.0.0.1 -Dport=8009 echo-client" >&2
+  echo "         $0 -DlogLevel=debug -Dhost=127.0.0.1 -Dport=8009 echo-client" >&2
   echo >&2
   echo "Available examples:" >&2
   echo >&2