Use h2 instead of mysql for example project to simplify
DELETE
dd-trace-examples/spring-boot-jdbc/.mvn/wrapper/maven-wrapper.jar
dd-trace-examples/spring-boot-jdbc/.mvn/wrapper/maven-wrapper.jar
Binary files a/dd-trace-examples/spring-boot-jdbc/.mvn/wrapper/maven-wrapper.jar and /dev/null differ

DELETE
dd-trace-examples/spring-boot-jdbc/.mvn/wrapper/maven-wrapper.properties
-distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip

MODIFY
dd-trace-examples/spring-boot-jdbc/README.md
dd-trace-examples/spring-boot-jdbc/README.md
@@ -31,10 +31,10 @@ There are 2 ways to test it:
### Generate traces
-Once the application runs. Go to the following url:
+Once the application runs. Go to the following urls:
-* [http://localhost:8080/demo/add?name=foo&email=bar]()
-* [http://localhost:8080/demo/all]()
+* [http://localhost:8080/demo/add?name=foo&email=bar](http://localhost:8080/demo/add?name=foo&email=bar)
+* [http://localhost:8080/demo/all](http://localhost:8080/demo/all)
Then, you will able to see traces directly to the DataDog UI.

MODIFY
dd-trace-examples/spring-boot-jdbc/build.gradle
dd-trace-examples/spring-boot-jdbc/build.gradle
description = 'spring-boot-jdbc'
dependencies {
- compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.41'
+ compile group: 'com.h2database', name: 'h2', version: '1.4.196'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '1.5.3.RELEASE'
compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version: '1.5.3.RELEASE'
}

DELETE
dd-trace-examples/spring-boot-jdbc/mvnw
-#!/bin/sh
-# ----------------------------------------------------------------------------
-# 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.
-# ----------------------------------------------------------------------------
-
-# ----------------------------------------------------------------------------
-# Maven2 Start Up Batch script
-#
-# Required ENV vars:
-# ------------------
-# JAVA_HOME - location of a JDK home dir
-#
-# Optional ENV vars
-# -----------------
-# M2_HOME - location of maven2's installed home dir
-# MAVEN_OPTS - parameters passed to the Java VM when running Maven
-# e.g. to debug Maven itself, use
-# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
-# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
-# ----------------------------------------------------------------------------
-
-if [ -z "$MAVEN_SKIP_RC" ] ; then
-
- if [ -f /etc/mavenrc ] ; then
- . /etc/mavenrc
- fi
-
- if [ -f "$HOME/.mavenrc" ] ; then
- . "$HOME/.mavenrc"
- fi
-
-fi
-
-# OS specific support. $var _must_ be set to either true or false.
-cygwin=false;
-darwin=false;
-mingw=false
-case "`uname`" in
- CYGWIN*) cygwin=true ;;
- MINGW*) mingw=true;;
- Darwin*) darwin=true
- # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
- # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
- if [ -z "$JAVA_HOME" ]; then
- if [ -x "/usr/libexec/java_home" ]; then
- export JAVA_HOME="`/usr/libexec/java_home`"
- else
- export JAVA_HOME="/Library/Java/Home"
- fi
- fi
- ;;
-esac
-
-if [ -z "$JAVA_HOME" ] ; then
- if [ -r /etc/gentoo-release ] ; then
- JAVA_HOME=`java-config --jre-home`
- fi
-fi
-
-if [ -z "$M2_HOME" ] ; then
- ## resolve links - $0 may be a link to maven's home
- PRG="$0"
-
- # need this for relative symlinks
- while [ -h "$PRG" ] ; do
- ls=`ls -ld "$PRG"`
- link=`expr "$ls" : '.*-> \(.*\)$'`
- if expr "$link" : '/.*' > /dev/null; then
- PRG="$link"
- else
- PRG="`dirname "$PRG"`/$link"
- fi
- done
-
- saveddir=`pwd`
-
- M2_HOME=`dirname "$PRG"`/..
-
- # make it fully qualified
- M2_HOME=`cd "$M2_HOME" && pwd`
-
- cd "$saveddir"
- # echo Using m2 at $M2_HOME
-fi
-
-# For Cygwin, ensure paths are in UNIX format before anything is touched
-if $cygwin ; then
- [ -n "$M2_HOME" ] &&
- M2_HOME=`cygpath --unix "$M2_HOME"`
- [ -n "$JAVA_HOME" ] &&
- JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
- [ -n "$CLASSPATH" ] &&
- CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
-fi
-
-# For Migwn, ensure paths are in UNIX format before anything is touched
-if $mingw ; then
- [ -n "$M2_HOME" ] &&
- M2_HOME="`(cd "$M2_HOME"; pwd)`"
- [ -n "$JAVA_HOME" ] &&
- JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
- # TODO classpath?
-fi
-
-if [ -z "$JAVA_HOME" ]; then
- javaExecutable="`which javac`"
- if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
- # readlink(1) is not available as standard on Solaris 10.
- readLink=`which readlink`
- if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
- if $darwin ; then
- javaHome="`dirname \"$javaExecutable\"`"
- javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
- else
- javaExecutable="`readlink -f \"$javaExecutable\"`"
- fi
- javaHome="`dirname \"$javaExecutable\"`"
- javaHome=`expr "$javaHome" : '\(.*\)/bin'`
- JAVA_HOME="$javaHome"
- export JAVA_HOME
- fi
- fi
-fi
-
-if [ -z "$JAVACMD" ] ; then
- if [ -n "$JAVA_HOME" ] ; then
- if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
- # IBM's JDK on AIX uses strange locations for the executables
- JAVACMD="$JAVA_HOME/jre/sh/java"
- else
- JAVACMD="$JAVA_HOME/bin/java"
- fi
- else
- JAVACMD="`which java`"
- fi
-fi
-
-if [ ! -x "$JAVACMD" ] ; then
- echo "Error: JAVA_HOME is not defined correctly." >&2
- echo " We cannot execute $JAVACMD" >&2
- exit 1
-fi
-
-if [ -z "$JAVA_HOME" ] ; then
- echo "Warning: JAVA_HOME environment variable is not set."
-fi
-
-CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
-
-# traverses directory structure from process work directory to filesystem root
-# first directory with .mvn subdirectory is considered project base directory
-find_maven_basedir() {
-
- if [ -z "$1" ]
- then
- echo "Path not specified to find_maven_basedir"
- return 1
- fi
-
- basedir="$1"
- wdir="$1"
- while [ "$wdir" != '/' ] ; do
- if [ -d "$wdir"/.mvn ] ; then
- basedir=$wdir
- break
- fi
- # workaround for JBEAP-8937 (on Solaris 10/Sparc)
- if [ -d "${wdir}" ]; then
- wdir=`cd "$wdir/.."; pwd`
- fi
- # end of workaround
- done
- echo "${basedir}"
-}
-
-# concatenates all lines of a file
-concat_lines() {
- if [ -f "$1" ]; then
- echo "$(tr -s '\n' ' ' < "$1")"
- fi
-}
-
-BASE_DIR=`find_maven_basedir "$(pwd)"`
-if [ -z "$BASE_DIR" ]; then
- exit 1;
-fi
-
-export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
-echo $MAVEN_PROJECTBASEDIR
-MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
-
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin; then
- [ -n "$M2_HOME" ] &&
- M2_HOME=`cygpath --path --windows "$M2_HOME"`
- [ -n "$JAVA_HOME" ] &&
- JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
- [ -n "$CLASSPATH" ] &&
- CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
- [ -n "$MAVEN_PROJECTBASEDIR" ] &&
- MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
-fi
-
-WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
-
-exec "$JAVACMD" \
- $MAVEN_OPTS \
- -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
- "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
- ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

DELETE
dd-trace-examples/spring-boot-jdbc/mvnw.cmd
-@REM ----------------------------------------------------------------------------
-@REM Licensed to the Apache Software Foundation (ASF) under one
-@REM or more contributor license agreements. See the NOTICE file
-@REM distributed with this work for additional information
-@REM regarding copyright ownership. The ASF licenses this file
-@REM to you under the Apache License, Version 2.0 (the
-@REM "License"); you may not use this file except in compliance
-@REM with the License. You may obtain a copy of the License at
-@REM
-@REM http://www.apache.org/licenses/LICENSE-2.0
-@REM
-@REM Unless required by applicable law or agreed to in writing,
-@REM software distributed under the License is distributed on an
-@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-@REM KIND, either express or implied. See the License for the
-@REM specific language governing permissions and limitations
-@REM under the License.
-@REM ----------------------------------------------------------------------------
-
-@REM ----------------------------------------------------------------------------
-@REM Maven2 Start Up Batch script
-@REM
-@REM Required ENV vars:
-@REM JAVA_HOME - location of a JDK home dir
-@REM
-@REM Optional ENV vars
-@REM M2_HOME - location of maven2's installed home dir
-@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
-@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
-@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
-@REM e.g. to debug Maven itself, use
-@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
-@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
-@REM ----------------------------------------------------------------------------
-
-@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
-@echo off
-@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
-@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
-
-@REM set %HOME% to equivalent of $HOME
-if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
-
-@REM Execute a user defined script before this one
-if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
-@REM check for pre script, once with legacy .bat ending and once with .cmd ending
-if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
-if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
-:skipRcPre
-
-@setlocal
-
-set ERROR_CODE=0
-
-@REM To isolate internal variables from possible post scripts, we use another setlocal
-@setlocal
-
-@REM ==== START VALIDATION ====
-if not "%JAVA_HOME%" == "" goto OkJHome
-
-echo.
-echo Error: JAVA_HOME not found in your environment. >&2
-echo Please set the JAVA_HOME variable in your environment to match the >&2
-echo location of your Java installation. >&2
-echo.
-goto error
-
-:OkJHome
-if exist "%JAVA_HOME%\bin\java.exe" goto init
-
-echo.
-echo Error: JAVA_HOME is set to an invalid directory. >&2
-echo JAVA_HOME = "%JAVA_HOME%" >&2
-echo Please set the JAVA_HOME variable in your environment to match the >&2
-echo location of your Java installation. >&2
-echo.
-goto error
-
-@REM ==== END VALIDATION ====
-
-:init
-
-@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
-@REM Fallback to current working directory if not found.
-
-set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
-IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
-
-set EXEC_DIR=%CD%
-set WDIR=%EXEC_DIR%
-:findBaseDir
-IF EXIST "%WDIR%"\.mvn goto baseDirFound
-cd ..
-IF "%WDIR%"=="%CD%" goto baseDirNotFound
-set WDIR=%CD%
-goto findBaseDir
-
-:baseDirFound
-set MAVEN_PROJECTBASEDIR=%WDIR%
-cd "%EXEC_DIR%"
-goto endDetectBaseDir
-
-:baseDirNotFound
-set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
-cd "%EXEC_DIR%"
-
-:endDetectBaseDir
-
-IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
-
-@setlocal EnableExtensions EnableDelayedExpansion
-for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
-@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
-
-:endReadAdditionalConfig
-
-SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
-
-set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
-set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
-
-%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
-if ERRORLEVEL 1 goto error
-goto end
-
-:error
-set ERROR_CODE=1
-
-:end
-@endlocal & set ERROR_CODE=%ERROR_CODE%
-
-if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
-@REM check for post script, once with legacy .bat ending and once with .cmd ending
-if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
-if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
-:skipRcPost
-
-@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
-if "%MAVEN_BATCH_PAUSE%" == "on" pause
-
-if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
-
-exit /B %ERROR_CODE%

MODIFY
dd-trace-examples/spring-boot-jdbc/src/main/resources/application.properties
dd-trace-examples/spring-boot-jdbc/src/main/resources/application.properties
spring.datasource.driver-class-name=io.opentracing.contrib.jdbc.TracingDriver
-spring.datasource.url= jdbc:tracing:mysql://localhost:3306/springdb
-spring.datasource.username=root
-spring.datasource.password=root
-
-spring.jpa.hibernate.ddl-auto=create-drop
+spring.datasource.url=jdbc:tracing:h2:mem:spring-test
+#spring.datasource.driver-class-name=org.h2.Driver
+#spring.datasource.url=jdbc:h2:mem:spring-test
logging.level.root=INFO
logging.level.com.datadoghq.trace=DEBUG
\ No newline at end of file

Use h2 instead of mysql for example project to simplify