Initial commit

.gitignore

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+.idea/
+.gradle/
+out/
+build/
+.idea/
+*.iml
+

README.md

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+This project is designed to demonstrate Spring Framework 5 Kotlin support and Functional web and bean APIs used together:
+ - Programmatic Bootstrap of Spring WebFlux application (not needed when Spring Boot is used)
+ - [Spring Kotlin support](https://spring.io/blog/2017/01/04/introducing-kotlin-support-in-spring-framework-5-0)
+ - Reactor Kotlin support
+ - Null-safety of Spring and Reactor API
+ - WebFlux Reactive web server and client
+ - [Functional bean definition with Kotlin DSL](https://github.com/sdeleuze/spring-kotlin-micro/blob/master/src/main/kotlin/micro/Beans.kt) (no reflection, no CGLIB proxies involved)
+ - [WebFlux functional routing declaration with Kotlin DSL](https://github.com/sdeleuze/spring-kotlin-micro/blob/master/src/main/kotlin/micro/web/Routes.kt)
+ - WebFlux and Reactor Netty native embedded server capabilities
+ - [Gradle Kotlin DSL](https://github.com/gradle/kotlin-dsl)
+ - [Junit 5 `@BeforeAll` and `@AfterAll` on non-static methods in Kotlin](https://github.com/sdeleuze/spring-kotlin-micro/blob/master/src/test/kotlin/micro/IntegrationTests.kt)
+
+TODO:
+ - [IDEA should take in account null-safety for inferred type](https://youtrack.jetbrains.com/issue/KT-19303)
+
+Build the project and run tests with `./gradlew build`, create the executable JAR via `./gradlew shadowJar`, and run it via `java -jar build/libs/spring-kotlin-functional-1.0.0-SNAPSHOT-all.jar`.

build.gradle.kts

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+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+buildscript {
+	repositories {
+		mavenCentral()
+		jcenter()
+		maven { setUrl("https://repo.spring.io/milestone") }
+		maven { setUrl("https://repo.spring.io/snapshot") }
+		maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap-1.1") }
+	}
+
+	dependencies {
+		classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.4-eap-54")
+		classpath("com.github.jengelman.gradle.plugins:shadow:2.0.1")
+		classpath("org.junit.platform:junit-platform-gradle-plugin:1.0.0-RC2")
+	}
+}
+
+apply {
+	plugin("kotlin")
+	plugin("com.github.johnrengelman.shadow")
+	plugin("org.junit.platform.gradle.plugin")
+}
+
+repositories {
+	mavenCentral()
+	maven { setUrl("https://repo.spring.io/milestone") }
+	maven { setUrl("https://repo.spring.io/snapshot") }
+	maven { setUrl("https://dl.bintray.com/kotlin/kotlin-eap-1.1") }
+}
+
+
+tasks {
+
+	withType<KotlinCompile> {
+		kotlinOptions {
+			jvmTarget = "1.8"
+			freeCompilerArgs = listOf("-Xjsr305-annotations=enable")
+		}
+	}
+
+	dependencies {
+		compile("org.jetbrains.kotlin:kotlin-stdlib-jre8:1.1.4-eap-54")
+		compile("org.jetbrains.kotlin:kotlin-reflect:1.1.4-eap-54")
+
+		compile("org.springframework:spring-webflux:5.0.0.BUILD-SNAPSHOT")
+		compile("org.springframework:spring-context:5.0.0.BUILD-SNAPSHOT")
+		compile("io.projectreactor.ipc:reactor-netty:0.7.0.M1")
+		compile("com.samskivert:jmustache:1.13")
+
+		compile("org.slf4j:slf4j-api:1.7.25")
+		compile("ch.qos.logback:logback-classic:1.2.3")
+
+		compile("com.fasterxml.jackson.module:jackson-module-kotlin:2.9.0")
+		compile("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.0")
+
+		testCompile("io.projectreactor:reactor-test:3.1.0.M3")
+
+		testCompile("org.junit.jupiter:junit-jupiter-api:5.0.0-RC2")
+		testRuntime("org.junit.jupiter:junit-jupiter-engine:5.0.0-RC2")
+		testRuntime("org.junit.platform:junit-platform-launcher:1.0.0-RC2")
+	}
+}

gradle.properties

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+org.gradle.script.lang.kotlin.accessors.auto=true
+group=io.spring
+version=1.0.0-SNAPSHOT

gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0.2-bin.zip

gradlew

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+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+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"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+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
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

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+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega