├── .gitpod.yml ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── .gitignore ├── serverless.yml ├── LICENSE ├── README.md ├── src └── main │ └── scala │ └── Bootstrap.scala ├── gradlew.bat └── gradlew /.gitpod.yml: -------------------------------------------------------------------------------- 1 | image: bytekast/gitpod-serverless 2 | tasks: 3 | - command: ./gradlew clean build -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/bytekast/serverless-graal-scala/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Tue May 14 23:42:26 MDT 2019 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.class 2 | *.iml 3 | .idea/ 4 | .gradle/ 5 | build/ 6 | bin/ 7 | out/ 8 | .settings/ 9 | .project 10 | .classpath 11 | 12 | # Package Files 13 | *.jar 14 | *.war 15 | *.ear 16 | 17 | # Serverless directories 18 | .serverless 19 | 20 | !gradle/wrapper/* 21 | 22 | node_modules/ 23 | -------------------------------------------------------------------------------- /serverless.yml: -------------------------------------------------------------------------------- 1 | service: graalvm-scala 2 | 3 | provider: 4 | name: aws 5 | runtime: provided 6 | profile: dev 7 | package: 8 | exclude: 9 | - .idea/** 10 | - .gradle/** 11 | - .serverless/** 12 | - build/** 13 | - gradle/** 14 | - src/** 15 | - build.gradle 16 | - gradlew 17 | - gradlew.bat 18 | - serverless.yml 19 | - '*.iml' 20 | include: 21 | - build/graal/** 22 | 23 | functions: 24 | echo: 25 | handler: echo 26 | layers: 27 | - {Ref: GraalLambdaLayer} 28 | 29 | reverse: 30 | handler: reverse 31 | layers: 32 | - {Ref: GraalLambdaLayer} 33 | 34 | layers: 35 | graal: 36 | path: build/graal -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2020 Rowell Belen 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Serverless Graal Scala Demo 2 | 3 | This demo project uses [GraalVM](https://www.graalvm.org/) to compile a simple [Scala](https://www.scala-lang.org/) project into a single **native executable file**. As a result, the application can run without Java/JVM installed in the target machine. 4 | 5 | See [Bootstrap.scala](src/main/scala/Bootstrap.scala) 6 | 7 | It utilizes the new [AWS Lambda Runtime API](https://docs.aws.amazon.com/lambda/latest/dg/runtimes-api.html) to call the native executable as a **Lambda Function**. 8 | 9 | Deployment is powered and managed by the [Serverless Framework](https://serverless.com/). 10 | 11 | #### Prerequisites 12 | 13 | 1) **Linux** development machine - This project builds a *native binary* that is deployed to **AWS** so it must run in a Linux machine. 14 | 2) Install [NodeJS](https://nodejs.org/en/) and the [Serverless Framework](https://serverless.com/framework/docs/getting-started/) 15 | 3) [Amazon Web Services](https://aws.amazon.com/) account 16 | 17 | You also need to setup your AWS credentials/profiles in the `~/.aws/credentials` file. 18 | 19 | ``` 20 | [dev] 21 | aws_access_key_id = XXXXXXXXXXXXXX 22 | aws_secret_access_key = XXXXXXXXXXXXXX 23 | region = us-east-1 24 | ``` 25 | 26 | ### Build 27 | 28 | To build the project, run `./gradlew clean build`. 29 | 30 | This will download all of the project and build dependencies including the GraalVM SDK and will create a native executable file named `bootstrap` in the `build/graal` directory. 31 | 32 | 33 | ### Deploy 34 | 35 | To deploy, simply run `sls deploy`. This demo project will create 2 lambda functions: `echo` and `reverse`: 36 | 37 | To invoke the functions, run: 38 | 39 | ``` 40 | sls invoke -f echo -d 'hello' 41 | sls invoke -f reverse -d 'hello' 42 | ``` -------------------------------------------------------------------------------- /src/main/scala/Bootstrap.scala: -------------------------------------------------------------------------------- 1 | import com.fasterxml.jackson.databind.ObjectMapper 2 | import com.fasterxml.jackson.module.scala.DefaultScalaModule 3 | import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper 4 | import com.softwaremill.sttp._ 5 | 6 | import scala.collection.immutable.Seq 7 | 8 | object Bootstrap { 9 | 10 | // Application entry point 11 | def main(args: Array[String]): Unit = { 12 | 13 | implicit val backend = HttpURLConnectionBackend() 14 | val api = sys.env("AWS_LAMBDA_RUNTIME_API") 15 | val nextEventUrl = s"http://$api/2018-06-01/runtime/invocation/next" 16 | 17 | while (true) { 18 | val response = sttp.get((uri"$nextEventUrl")).send() 19 | val requestId = response.header("Lambda-Runtime-Aws-Request-Id") 20 | requestId.map { rqId => 21 | val errorResponseUrl = s"http://$api/2018-06-01/runtime/invocation/$rqId/error" 22 | val successResponseUrl = s"http://$api/2018-06-01/runtime/invocation/$rqId/response" 23 | try { 24 | response.body match { 25 | case Left(errorMessage) => sttp.post(uri"$errorResponseUrl").body(errorMessage).send() 26 | case Right(rawStringBody) => { 27 | val out = invokeFunction(rqId, response.headers, rawStringBody) 28 | sttp.post(uri"$successResponseUrl").body(out).send() 29 | } 30 | } 31 | } catch { 32 | case e: Throwable => sttp.post(uri"$errorResponseUrl").body(e.getMessage).send() 33 | } 34 | } 35 | } 36 | } 37 | 38 | // It's just a demo, use inline functions 39 | def invokeFunction(requestId: String, headers: Seq[(String, String)], body: String): String = { 40 | sys.env("_HANDLER") match { 41 | case "echo" => JsonUtil.toJson(Map("statusCode" -> 200, "headers" -> headers.toMap, "body" -> body)) 42 | case "reverse" => JsonUtil.toJson(Map("statusCode" -> 200, "headers" -> headers.toMap, "body" -> body.reverse)) 43 | case _ => JsonUtil.toJson(Map("statusCode" -> 404, "headers" -> headers.toMap, "body" -> "Unknown Function")) 44 | } 45 | } 46 | } 47 | 48 | 49 | // Json Utility 50 | object JsonUtil { 51 | val mapper = new ObjectMapper() with ScalaObjectMapper 52 | mapper.registerModule(DefaultScalaModule) 53 | 54 | def toJson(value: Any): String = { 55 | mapper.writeValueAsString(value) 56 | } 57 | } -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | --------------------------------------------------------------------------------