Running Scala on AWS Lambda in a Snappy Way

Transcript

1. Running Scala on AWS Lambda in a snappy way ScalaMatsuri 2019 @todokr BizReach, Inc. "84
   -BNCEBͰ4DBMBΛαΫαΫಈ͔͢ and fun!
2. The opinions expressed here do not represent
 those of any organization. ͜͜Ͱࣔ͞Ε͍ͯΔݟղ͸ɺ
 ॴଐ૊৫ͷݟղΛ൓ө͢Δ΋ͷͰ͸͋Γ·ͤΜ
3. Who? Shunsuke Tadokoro @todokr ‣A software engineer working at BizReach, Inc. ‣Love: Scala, Clojure, Emacs, etc. ‣Contributed: Play Framework, ScalikeJDBC, etc. ‣Wrote: ాॴ
   ॣ༎
 גࣜձࣾϏζϦʔνͷιϑτ΢ΣΞΤϯδχΞ
5. sbt-project-switcher ‣ A sbt plugin to switch sub projects quickly⚡ TCUͷαϒϓϩδΣΫτΛαΫαΫ੾Γସ͑ΔϓϥάΠϯ
6. ×
7. AWS Lambda ‣a serverless computing service what we call 'FaaS' ‣Runtimes ‣ Python ‣ Node.js ‣ Java8 ‣ Go ‣ C# ‣ PowerShell ‣ Ruby ‣ custom runtime ‣Just write function and execute ͍ΘΏΔ'BB4ͱݺ͹ΕΔαʔόʔϨείϯϐϡʔςΟϯάαʔϏε
 ͨͩؔ਺Λॻ͍࣮ͯߦ͢Δ͚ͩ
8. AWS Lambda ‣ Fully managed ‣ No server management ‣ High Availability & Scalable ‣ So, you can focus on creating value ϑϧϚωʔδυɿ
   αʔόʔͷ؅ཧ͕ෆཁɺϏδωεՁ஋ΛੜΉ͜ͱʹूதͰ͖Δ
9. AWS Lambda ‣ Fully managed ‣ No server management ‣ High Availability & Scalable ‣ So, you can focus on creating value ‣ Low cost ‣ Free tier ‣ Pay only for compute time ‣ No charge when code is not running ௿ίετɿ
   ແྉ࿮͋ΓɺίϯϐϡʔςΟϯά࣌ؒʹରͯ͠՝ۚ
10. I hope to run Scala on AWS Lambda! "84
    -BNCEBͰ΋4DBMBΛ࢖͍͍ͨʂ
11. I hope to run Scala on AWS Lambda! ‣ No context switch cost to my brain ‣ Scala in server app, Python in X, Node.js in Y, Go in Z… ‣ powers of concentration is precious resource ೴಺ίϯςΩετεΠονͷ཈੍ͷͨΊ
 ͜Ε͸1ZUIPO
    ͋Ε͸/PEF
    ͋ͬͪ͸(Pͱ͍͏ͷ͸ͳΔ΂͘ආ͚͍ͨ
12. I hope to run Scala on AWS Lambda! ‣ No context switch cost to my brain ‣ Scala in server app, Python in X, Node.js in Y, Go in Z… ‣ powers of concentration is precious resource ‣ Types ‣ Lambda handler is rarely maintained ‣ Information richness comes from types save time
 to understand code -BNCEBϋϯυϥ͸Ұ౓ॻ͔ΕΔͱ์ஔ͞Ε͕ͪ
 ܕͷදݱྗ͸ίʔυͷཧղΛॿ͚ͯ͘ΕΔ
13. I hope to run Scala on AWS Lambda! ‣ No context switch cost to my brain ‣ Scala in server app, Python in X, Node.js in Y, Go in Z… ‣ powers of concentration is precious resource ‣ Types ‣ Lambda handler is rarely maintained ‣ Information richness comes from types save time
 to understand code ‣ Test ‣ Able to use testing library you get used to ׳ΕͨςετϥΠϒϥϦΛ࢖͏͜ͱ͕Ͱ͖Δ
14. However... ‣ It's often said that 
 "Running JVM language on Lambda is too slow!" ‣ So called "cold-start problem" ʮ-BNCEBͰ+7.ݴޠ͸஗͍ʯͱ͠͹͠͹ݴΘΕΔ
15. However... ‣ It's often said that 
 "Running JVM language on Lambda is too slow!" ‣ So called "cold-start problem" ‣ There is limitation of function package size ‣ Jar size: up to 50 MB ‣ Need to care about libraries to depend on ؔ਺ύοέʔδͷαΠζ͸.#Ҏ಺ͱ͍͏੍ݶ΋ଘࡏ͢Δ
16. So, questions are... ‣ How slow Scala on AWS Lambda is? ‣ How can we make package size small? ‣ How can we run Scala on AWS Lambda in a snappy way? Ͳͷ͘Β͍஗͍ͷ͔ʁͲ͏ͨ͠ΒύοέʔδαΠζΛখ͘͞Ͱ͖Δ͔ʁ
 Ͳ͏ͨ͠Β-BNCEBͰ4DBMBΛαΫαΫಈ͔͢͜ͱ͕Ͱ͖Δ͔ʁ
17. "
 Hello world (avg duration & memory usage of 5 times) ·ͣ͸)FMMP
    XPSME͔Β࣮ݧ
18. Hello world in Scala import collection.JavaConverters._ import com.amazonaws.services.lambda.runtime.Context class Hello { def handleRequest( request: java.util.Map[String, String], context: Context ): java.util.Map[String, String] = { val name = request.asScala("name") Map("message" -> s"Hello, $name.").asJava } } 4DBMBͰͷ)FMMP
    XPSME
    +BSͷαΠζ
    .#
 ࠷େϝϞϦ࢖༻ྔ
    .#
    ॴཁ࣌ؒ
     NT Lambda memory: 128MB Jar size: 9.7MB Max memory used: 115MB Duration: 8,588ms
19. Hello world in Scala import collection.JavaConverters._ import com.amazonaws.services.lambda.runtime.Context class Hello { def handleRequest( request: java.util.Map[String, String], context: Context ): java.util.Map[String, String] = { val name = request.asScala("name") Map("message" -> s"Hello, $name.").asJava } } 4DBMBͰͷ)FMMP
    XPSME
    +BSͷαΠζ
    .#
 ࠷େϝϞϦ࢖༻ྔ
    .#
    ॴཁ࣌ؒ
     NT Lambda memory: 128MB Jar size: 9.7MB Max memory used: 115MB Duration: 8,588ms
20. Hello world in Scala import collection.JavaConverters._ import com.amazonaws.services.lambda.runtime.Context class Hello { def handleRequest( request: java.util.Map[String, String], context: Context ): java.util.Map[String, String] = { val name = request.asScala("name") Map("message" -> s"Hello, $name.").asJava } } 4DBMBͰͷ)FMMP
    XPSME
    +BSͷαΠζ
    .#
 ࠷େϝϞϦ࢖༻ྔ
    .#
    ॴཁ࣌ؒ
     NT Lambda memory: 128MB Jar size: 9.7MB Max memory used: 115MB Duration: 8,588ms
21. Hello world in Scala import collection.JavaConverters._ import com.amazonaws.services.lambda.runtime.Context class Hello { def handleRequest( request: java.util.Map[String, String], context: Context ): java.util.Map[String, String] = { val name = request.asScala("name") Map("message" -> s"Hello, $name.").asJava } } 4DBMBͰͷ)FMMP
    XPSME
    +BSͷαΠζ
    .#
 ࠷େϝϞϦ࢖༻ྔ
    .#
    ॴཁ࣌ؒ
     NT Lambda memory: 128MB Jar size: 9.7MB Max memory used: 115MB Duration: 8,588ms
22. 2nd trial... TODO screen shot
23. 2nd trial... TODO screen shot
24. 2nd trial... TODO screen shot 2nd trial is blazing fast! ճ໨ͷॴཁ࣌ؒ͸
    NT
    ͱ଎͍
25. 2nd trial... TODO screen shot 2nd trial is blazing fast! 1st trial took 8 seconds, so called "cold-start" problem ॳճ͸ඵɺ͍ΘΏΔʮίʔϧυελʔτʯ໰୊
26. cold-start? ίʔϧυελʔτͬͯԿʁ
27. What is cold-start? We should know Lambda lifecycle! DPMETUBSUΛཧղ͢ΔͨΊʹɺ-BNCEBͷϥΠϑαΠΫϧʹ͍ͭͯ஌Δ
28. What is cold-start? We should know Lambda lifecycle! 
    ؔ਺ύοέʔδͷμ΢ϯϩʔυ Download code 1. Download the function package 
 (zip or jar, file on S3) you wrote
29. What is cold-start? We should know Lambda lifecycle! 
    ίʔυ࣮ߦ༻ͷαϯυϘοΫείϯςφͷىಈ Download code Start new container 2. Start the sandbox container where your code will be executed
30. What is cold-start? We should know Lambda lifecycle! 
    ϥϯλΠϜͷىಈ
 +BWBͷ৔߹ɺ+7.ͷىಈ΍ΫϥεϑΝΠϧͷϩʔυͳͲ΋ Download code Start new container Bootstrap runtime 3. Bootstrap runtime to run your code, 
 including JVM spin-up, load class files, etc.
31. What is cold-start? We should know Lambda lifecycle! 
    ؔ਺ύοέʔδͷ࣮ߦ Download code Start new container Bootstrap runtime Run code 4. Run your function package code and
 affect the world
32. What is cold-start? We should know Lambda lifecycle! 
    ίϯςφΛϑϦʔζ͠ɺ࣍ճͷݺͼग़͠Λ଴ͭ
 ͨͩ͠ɺ࣍ճͷݺͼग़͕͠ಉ͡ΠϯελϯεͰ࣮ߦ͞ΕΔอূ͸ͳ͍ Download code Start new container Bootstrap runtime Run code Freeze the container 5. Freeze the container and wait for a next invocation However there's no guarantee it will run on the same instance. 
 Container may be removed.
33. Cold-start is a process that follows 
 "download" to "run". Note that downloading jar and spinning-up
 JVM relatively take time. What is cold-start? We should know Lambda lifecycle! ίʔϧυελʔτ͸ίʔυͷμ΢ϯϩʔυ͔Β࣮ߦ·ͰΛܦΔ
 KBSͷμ΢ϯϩʔυ΍+7.ͷىಈ͸ൺֱత͕͔͔࣌ؒΔॲཧ Download code Start new container Bootstrap runtime Run code Freeze the container
34. Warm-start is a process which reuses the same instance, so there's no spin-up time. This is why each invocations after the first 
 is fast. What is cold-start? We should know Lambda lifecycle! ΢ΥʔϜελʔτͱ͸-BNCBΠϯελϯε͕࠶ར༻͞ΕΔ࣮ߦ
 ͜Ε͕ճ໨Ҏ߱ͷݺͼग़͕͠଎͔ͬͨཧ༝ Download code Start new container Bootstrap runtime Run code Freeze the container
35. first-time-only misunderstanding ʮॳճ͚ͩʯͷޡղ
36. first-time-only misunderstanding ‣ Not the first time only! ίʔϧυελʔτ͕ى͖Δͷ͸ॳճͷݺͼग़͚ͩ͠Ͱ͸ͳ͍ʂ
    
37. first-time-only misunderstanding ‣ Not the first time only! ‣ If there is no available container, cold-start happens ‣ Lambda containers have the limitation that they can handle 
 only single request at a time ‣ If two requests come in at once, two containers are required 
 to handle these requests ‣ If there is no available one, it starts from container creation ෳ਺ಉ࣌ϦΫΤετͳͲɺ࣮ߦՄೳͳίϯςφ͕ଘࡏ͠ͳ͍৔߹ʹ΋ى ͖Δ
38. first-time-only misunderstanding ‣ Not the first time only! ‣ If there is no available container, cold-start happens ‣ Lambda containers have the limitation that they can handle 
 only single request at a time ‣ If two requests come in at once, two containers are required 
 to handle these requests ‣ If there is no available one, it starts from container creation ‣ When a large request spike comes, the throughput problem occurs or it exceed Lambda's concurrency limitation େ͖ͳϦΫΤετͷεύΠΫ͕དྷͨ৔߹ʹɺεϧʔϓοτ͕໰୊ʹͳͬͨΓ -BNCEBͷಉ࣮࣌ߦ਺ͷ੍ݶʹͻ͔͔ͬͬͯ͠·͏͜ͱ΋
39. What increases 
 cold-start latency? Կ͕ίʔϧυελʔτ࣌ͷϨΠςϯγΛ૿Ճͤ͞Δͷ͔ʁ
40. Factors increase cold-start latency ίʔϧυελʔτͷϨΠςϯγΛ૿Ճͤ͞ΔཁҼ
41. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size -BNCEBʹׂΓ౰ͯΒΕͨϝϞϦαΠζ
 ଞͷϥϯλΠϜʹൺ΂ɺ+7.͸ىಈʹൺֱతଟ͘ͷϝϞϦΛඞཁͱ͢Δ
43. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size -BNCEBʹׂΓ౰ͯΒΕͨϝϞϦαΠζ
 ଞͷϥϯλΠϜʹൺ΂ɺ+7.͸ىಈʹൺֱతଟ͘ͷϝϞϦΛඞཁͱ͢Δ
44. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size ‣ Function package size ‣ The larger jar size is, the more download time takes ؔ਺ύοέʔδͷαΠζ
 େ͖͚Ε͹େ͖͍΄Ͳɺμ΢ϯϩʔυʹ΋͕͔͔࣌ؒΔ
45. includes 30MB
 dummy binary file
46. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size ‣ Function package size ‣ The larger jar size is, the more download time takes ؔ਺ύοέʔδͷαΠζ
 େ͖͚Ε͹େ͖͍΄Ͳɺμ΢ϯϩʔυʹ΋͕͔͔࣌ؒΔ
47. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size ‣ Function package size ‣ The larger jar size is, the more download time takes ‣ Number of class files to be loaded ‣ Large number of classes to be loaded and initialized introduces
 large amount of latency ΫϥεϑΝΠϧͷ਺
 ϩʔυ͓ΑͼॳظԽ͞ΕΔΫϥεϑΝΠϧ͕ଟ͚Ε͹ɺͦͷ෼஗͘ͳΔ
48. Factors increase cold-start latency ‣ Attached memory size ‣ Memory footprint of JVM spin-up is relatively large ‣ CPU power is proportional to memory size ‣ Function package size ‣ The larger jar size is, the more download time takes ‣ Number of class files to be loaded ‣ Large number of classes to be loaded and initialized introduces large amount of latency ‣ VPC, etc. ͦͷଞɺ71$ͳͲ΋Өڹ
49. Another factor in Scala app ‣ Scala class files tend to be numerous ‣ These class files are loaded and initialized when it used 4DBMBͷΫϥεϑΝΠϧ͸਺͕ଟ͘ͳΓ͕ͪ
 ར༻ͷࡍʹ͸͜ΕΒ΋ϩʔυɾॳظԽ͞ΕΔ $ tree . /unzipped-jar/scala scala/ ├── AnyVal.class ├── AnyValCompanion.class ├── App.class ├── Array$$anon$2.class ├── Array$.class ... │ ├── Regex$Replacement.class │ ├── Regex.class │ └── UnanchoredRegex.class └── volatile.class 34 directories, 2503 files $ tree ./ ... |____Hello$.class |____Hello.class |____Request.class |____Request$.class ... | |____PartialFunction$anonfun$apply$1.class | |____SttpBackendOptions$Proxy$$anon$1.class ...
50. In short? ͭ·Γʁ
51. Scala on Lambda problems 4DBMBΛ-BNCEBͰಈ্͔͢Ͱͷ໰୊
52. Scala on Lambda problems ‣ Java runtime is at a disadvantage ‣ JVM spin-up memory footprint ‣ Jar size to be downloaded ‣ Number of classes to be loaded and initialized ىಈ࣌ͷϝϞϦϑοτϓϦϯτ΍μ΢ϯϩʔυ͢ΔKBSͷαΠζɺ
 ΫϥεϑΝΠϧͷϩʔυͱॳظԽͳͲͷ఺Ͱɺ+BWBϥϯλΠϜ͸ෆར
53. Scala on Lambda problems ‣ Java runtime is at a disadvantage ‣ JVM spin-up memory footprint ‣ Jar size to be downloaded ‣ Number of classes to be loaded and initialized ‣ Scala's another disadvantage ‣ Scala class files tend to be numerous 4DBMBͷΫϥεϑΝΠϧ͸਺͕ଟ͘ͳΓ͕ͪͳͷ΋ෆརͳ఺
54. Scala on Lambda problems ‣ Java runtime is at a disadvantage ‣ JVM spin-up memory footprint ‣ Jar size to be downloaded ‣ Number of classes to be loaded and initialized ‣ Scala's another disadvantage ‣ Scala class files tend to be numerous ‣ Thus, Scala cold-start in Java runtime takes longer than other language runtime ‣ even "Hello world", it took 8s ‣ when in warm-start, 0.5ms Αͬͯɺ4DBMB
    Y
    +BWBϥϯλΠϜͷίʔϧυελʔτ͸
 ଞͷϥϯλΠϜΑΓ΋͕͔͔࣌ؒͬͯ͠·͏
55. hmm... so how can we run Scala snappy on Lambda? ͏ʔΉɺ͡Ό͋Ͳ͏ͨ͠ΒαΫαΫಈ͔ͤΔͩΖ͏͔ʁ
56. Run Scala on Lambda without JVM +7.Λ࢖Θͣʹ4DBMBΛಈ͔͢
57. Run Scala on Lambda without JVM ‣ However JVM is great, the short-lived Lambda instance doesn't take advantage of the characteristics of that ‣ Such as dynamic class loading or HotSpot JIT compile, etc. +7.͸Ғେ͕ͩɺੜଘظ͕ؒ୹͍-BNCEBΠϯελϯεͰ͸
 ͦͷྑ͍ಛੑ͕׆͔ͮ͠Β͍
58. Run Scala on Lambda without JVM ‣ However JVM is great, the short-lived Lambda instance doesn't take advantage of the characteristics of that ‣ Such as dynamic class loading or HotSpot JIT compile, etc. ‣ It might be awesome if it runs without JVM! ‣ Not to wait JVM spin-up and loading classes ‣ Make executable package size small ‣ Keep memory footprint small +7.ͳ͠Ͱ࣮ߦͰ͖ͨΒྑ͍݁ՌʹͳΔ͔΋͠Εͳ͍ʂ
 +7.ͷεϐϯΞοϓΛ଴ͨͣɺؔ਺ύοέʔδͱϝϞϦ࢖༻ྔΛখ͘͞
59. How? Ͱ͸Ͳ͏΍ͬͯʁ
60. How? ‣ Scala.js with Node.js runtime 4DBMBKTΛ/PEFKTϥϯλΠϜͰಈ͔͢
61. How? ‣ Scala.js with Node.js runtime ‣ Scala Native with Custom runtime 4DBMB
    /BUJWFΛΧελϜϥϯλΠϜͰಈ͔͢
62. How? ‣ Scala.js with Node.js runtime ‣ Scala Native with Custom runtime ‣ Native image built by GraalVM with Custom runtime (SBBM7.Ͱੜ੒ͨ͠ωΠςΟϒΠϝʔδΛΧελϜϥϯλΠϜͰಈ͔͢
63. Sample code ‣ https://github.com/todokr/scala-on-lambda-snappy
64. GraalVM IUUQTXXXTDBMBKTPSH
65. Scala.js ‣ A statically typed AltJS ‣ Generate JavaScript code from Scala ‣ Provided as a sbt compiler plugin // plugins.sbt addSbtPlugin("org.scala-js" % "sbt-scalajs" % "0.6.26") // build.sbt enablePlugins(ScalaJSPlugin) // Greet.scala object Greet extends App { println("Hello from Scala.js!") } ੩తܕ෇͚"MU+4ͷҰछͰɺ4DBMBͷίʔυ͔Β+BWB4DSJQUΛੜ੒͢Δ
 TCUͷίϯύΠϥϓϥάΠϯͱͯ͠ఏڙ͞Ε͍ͯΔ
66. class of ES6 & Scala.js class Person(val firstName: String, val lastName: String) { def fullName(): String = s"$firstName $lastName" } class Person { constructor(firstName, lastName) { this.firstName = firstName; this.lastName = lastName; } fullName() { return `${this.firstName} ${this.lastName}`; } } ES6 Scala.js
67. Scala.js facade for Node.js ‣ scalajs-io/nodejs https://github.com/scalajs-io/nodejs ‣ A facade library provides Node.js API interface ‣ Enable type hinting and checking // before (not type safe) import js.Dynamic def getToken(): UndefOr[String] = Dynamic.global.process.env.ACCESS_TOKEN.asInstanceOf[UndefOr[String]] // after import io.scalajs.nodejs.{Environment, process} def getToken2(): Environment = process.env TDBMBKTJPOPEFKT
    ͱ͍͏/PEFKTͷϑΝαʔυϥΠϒϥϦ͕͋Δ
 /PEFKTͷ"1*Λ҆શʹݺͼग़͢͜ͱ͕Ͱ͖Δ
68. Scala Native IUUQTTDBMBOBUJWFSFBEUIFEPDTJP
69. Scala Native ‣ Generate executable binary file from Scala ‣ Provided as a sbt compiler plugin // plugins.sbt addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.3.8") // build.sbt scalaVersion := "2.11.12" enablePlugins(ScalaNativePlugin) // Greet.scala object Greet extends App { println("Hello from Scala Native!") } 4DBMBͷίʔυ͔Β࣮ߦՄೳͳόΠφϦϑΝΠϧΛੜ੒͢Δ
 TCUͷίϯύΠϥϓϥάΠϯͱͯ͠ఏڙ͞Ε͍ͯΔ
70. Scala Native ‣ Try generating executable and running without JVM # compile & generate machine code $ sbt nativeLink # execute $ time ./target/scala-2.11/greet-out Hello from Scala Native! real 0m0.019s user 0m0.004s sys 0m0.007s όΠφϦΛੜ੒࣮ͯ͠ߦͯ͠ΈΔ
71. AWS Lambda custom runtime ‣ Any language that can run in the Lambda execution environment is available ‣ Simple HTTP based interface ‣ to get the event payload for a new invocation ‣ to return back the response from the function -BNCEBͷ؀ڥͰ࣮ߦͰ͖ΔݴޠͳΒԿͰ΋ར༻Մೳ
    ϦΫΤετϨεϙϯεͷͨΊͷγϯϓϧͳ)551ΠϯλϑΣʔεΛ࣋ͭ
72. GraalVM IUUQTXXXHSBBMWNPSH
73. GraalVM ‣ Polyglot VM developed by Oracle ‣ Enable to run JVM langs, JS, Python, Ruby, etc. with zero overhead ‣ SubstrateVM ‣ A GraalVM component that allows AOT compilation of Java code
 into executable native images ‣ Community Edition / Enterprise Edition 0SBDMF͕։ൃ͍ͯ͠Δ
    1PMZHMPU
    7.
 4VCTUSBUF7.
    ͸࣮ߦՄೳͳωΠςΟϒΠϝʔδΛੜ੒͢Δίϯϙʔωϯτ
74. Java frameworks use SubstrateVM ‣ Quarkus https://quarkus.io ‣ A "Supersonic Subatomic Java" framework ‣ Micronaut Framework https://micronaut.io ‣ A full-stack framework for microservice and serverless applications ‣ Project Helidon https://helidon.io ‣ A collection of Java libraries for writing microservices (SBBM7.ͰωΠςΟϒΠϝʔδΛੜ੒͢Δ+BWBϑϨʔϜϫʔΫ
75. "
 Hello world
 in Scala.js 4DBMBKTͰ)FMMP
    XPSME
76. Hello world in Scala.js // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.12.8", scalacOptions += "-P:scalajs:sjsDefinedByDefault", scalaJSLinkerConfig ~= { _.withModuleKind(ModuleKind.CommonJSModule) }) lazy val hello = (project in file("hello")) .settings( commonSettings, artifactPath in (Compile, fastOptJS) := baseDirectory.value / "hello.js", artifactPath in (Compile, fullOptJS) := baseDirectory.value / "hello-opt.js", ).enablePlugins(ScalaJSPlugin) ‣ build.sbt
77. Hello world in Scala.js $PNNPO+4ελΠϧͰϞδϡʔϧΛੜ੒͢Δ // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.12.8", scalacOptions += "-P:scalajs:sjsDefinedByDefault", scalaJSLinkerConfig ~= { _.withModuleKind(ModuleKind.CommonJSModule) }) lazy val hello = (project in file("hello")) .settings( commonSettings, artifactPath in (Compile, fastOptJS) := baseDirectory.value / "hello.js", artifactPath in (Compile, fullOptJS) := baseDirectory.value / "hello-opt.js", ).enablePlugins(ScalaJSPlugin) ‣ Emit CommonJS style modules
78. Hello world in Scala.js ੜ੒͞Εͨ+4͕഑ஔ͞ΕΔύεΛఆٛ // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.12.8", scalacOptions += "-P:scalajs:sjsDefinedByDefault", scalaJSLinkerConfig ~= { _.withModuleKind(ModuleKind.CommonJSModule) }) lazy val hello = (project in file("hello")) .settings( commonSettings, artifactPath in (Compile, fastOptJS) := baseDirectory.value / "hello.js", artifactPath in (Compile, fullOptJS) := baseDirectory.value / "hello-opt.js", ).enablePlugins(ScalaJSPlugin) ‣ Define the path which is generated JS placed
79. Hello world in Scala.js // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ Hello.scala
80. Hello world in Scala.js +4ͷΦϒδΣΫτΛܕ҆શʹѻ͏ͨΊͷϑΝαʔυܕ // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ A facade type to handle JS object type safely
81. Hello world in Scala.js ίʔϧόοΫؔ਺ͷܕΛఆٛ // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ Define the type of callback function
82. Hello world in Scala.js ͕͜͜ϋϯυϥͷओཁͳύʔτ // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ This is the main part of handler
83. Hello world in Scala.js ΦϒδΣΫτΛHMPCBMʹΤΫεϙʔτ͢ΔΞϊςʔγϣϯ // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ A annotation exports that object to the JS global scope
84. Hello world in Scala.js ϦΫΤετ͔ΒϝοηʔδΛ૊ΈཱͯɺίʔϧόοΫؔ਺ΛݺͿ // Hello.scala import scala.scalajs.js import scala.scalajs.js.annotation.JSExportTopLevel @js.native trait Request extends js.Object { val name: String = js.native } object Hello { type Callback = js.Function2[Error, js.Any, Unit] @JSExportTopLevel("handleRequest") def handleRequest(req: Request, c: js.Object, callback: Callback): Unit = { val message = s"Hello, ${req.name}!" callback(null, js.Dynamic.literal("message" -> message)) } } ‣ Create message from request and invoke callback function
85. Hello world in Scala.js ‣ Let's run! 1BDLBHF
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92. Hello world in Scala Native Building executable for Lambda is complex a bit ‣ Write Scala Native code 4DBMB
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93. Hello world in Scala Native Building executable for Lambda is complex a bit ‣ Write Scala Native code ‣ Build the Amazon Linux based docker container ‣ Install required libs such as LLVM, curl, openssl, re2, etc. ‣ Publish those as a Lambda Layer "NB[PO
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94. Hello world in Scala Native Building executable for Lambda is complex a bit ‣ Write Scala Native code ‣ Build the Amazon Linux based docker container ‣ Install required libs such as LLVM, curl, openssl, re2, etc. ‣ Publish those as a Lambda Layer ‣ Build executable with the docker container and deploy %PDLFSΛ࢖࣮ͬͯߦՄೳϑΝΠϧΛϏϧυ͠ɺσϓϩΠ
95. Hello world in Scala Native ‣ build.sbt // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.11.12", nativeLinkingOptions ++= Seq("-static-libstdc++", "-L/lib/"), nativeGC := "immix", // default is Boehm GC nativeCompileOptions := Seq("-O3") ) lazy val hello = (project in file("hello")) .settings( commonSettings, libraryDependencies ++= Seq( "com.softwaremill.sttp" %%% "core" % "1.5.11", "io.argonaut" % "argonaut_native0.3_2.11" % "6.2.2" ) ).enablePlugins(ScalaNativePlugin)
96. Hello world in Scala Native ‣ Settings for Scala version, linkage option, compile option, etc. // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.11.12", nativeLinkingOptions ++= Seq("-static-libstdc++", "-L/lib/"), nativeGC := "immix", // default is Boehm GC nativeCompileOptions := Seq("-O3") ) lazy val hello = (project in file("hello")) .settings( commonSettings, libraryDependencies ++= Seq( "com.softwaremill.sttp" %%% "core" % "1.5.11", "io.argonaut" % "argonaut_native0.3_2.11" % "6.2.2" ) ).enablePlugins(ScalaNativePlugin) 4DMBMBόʔδϣϯ΍ϦϯέʔδɺίϯύΠϧͷΦϓγϣϯΛઃఆ
97. Hello world in Scala Native ‣ Libraries written for Scala Native are available // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.11.12", nativeLinkingOptions ++= Seq("-static-libstdc++", "-L/lib/"), nativeGC := "immix", // default is Boehm GC nativeCompileOptions := Seq("-O3") ) lazy val hello = (project in file("hello")) .settings( commonSettings, libraryDependencies ++= Seq( "com.softwaremill.sttp" %%% "core" % "1.5.11", "io.argonaut" % "argonaut_native0.3_2.11" % "6.2.2" ) ).enablePlugins(ScalaNativePlugin) 4DBMB/BUJWFʹରԠ͍ͯ͠ΔϥΠϒϥϦͳΒར༻͕Մೳ
98. Hello world in Scala Native ‣ STTP: HTTP lib, to invoke Custom runtime API ‣ Argonaut: JSON lib, to handle JSON request / response // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.11.12", nativeLinkingOptions ++= Seq("-static-libstdc++", "-L/lib/"), nativeGC := "immix", // default is Boehm GC nativeCompileOptions := Seq("-O3") ) lazy val hello = (project in file("hello")) .settings( commonSettings, libraryDependencies ++= Seq( "com.softwaremill.sttp" %%% "core" % "1.5.11", "io.argonaut" % "argonaut_native0.3_2.11" % "6.2.2" ) ).enablePlugins(ScalaNativePlugin) 
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99. Hello world in Scala Native ‣ Hello.scala import com.softwaremill.sttp._ import argonaut._, Argonaut._ object Hello { def main(args: Array[String]): Unit = { implicit val backend = CurlBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("Lambda-Runtime-Aws-Request-Id") val request = Parse.decodeOption[Request](next.unsafeBody).get val message = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post( uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response" ).body(message).send() } } } case class Request(name: String)
100. Hello world in Scala Native ‣ Initialize: get runtime api path, etc. import com.softwaremill.sttp._ import argonaut._, Argonaut._ object Hello { def main(args: Array[String]): Unit = { implicit val backend = CurlBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("Lambda-Runtime-Aws-Request-Id") val request = Parse.decodeOption[Request](next.unsafeBody).get val message = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post( uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response" ).body(message).send() } } } case class Request(name: String) ॳظԽॲཧ
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101. Hello world in Scala Native ‣ Process 1 request with 1 loop import com.softwaremill.sttp._ import argonaut._, Argonaut._ object Hello { def main(args: Array[String]): Unit = { implicit val backend = CurlBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("Lambda-Runtime-Aws-Request-Id") val request = Parse.decodeOption[Request](next.unsafeBody).get val message = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post( uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response" ).body(message).send() } } } case class Request(name: String) ϧʔϓͰϦΫΤετΛॲཧ͢Δ
102. Hello world in Scala Native ‣ Fetch event from next API and parse as request import com.softwaremill.sttp._ import argonaut._, Argonaut._ object Hello { def main(args: Array[String]): Unit = { implicit val backend = CurlBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("Lambda-Runtime-Aws-Request-Id") val request = Parse.decodeOption[Request](next.unsafeBody).get val message = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post( uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response" ).body(message).send() } } } case class Request(name: String) OFYU
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103. Hello world in Scala Native ‣ Send build message to response API import com.softwaremill.sttp._ import argonaut._, Argonaut._ object Hello { def main(args: Array[String]): Unit = { implicit val backend = CurlBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("Lambda-Runtime-Aws-Request-Id") val request = Parse.decodeOption[Request](next.unsafeBody).get val message = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post( uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response" ).body(message).send() } } } case class Request(name: String) ૊ΈཱͯͨϝοηʔδΛϨεϙϯε"1*ʹૹΔ
104. Hello world in Scala Native Build code with docker
105. Hello world in Scala Native Build code with docker FROM amazonlinux:latest ENV SCALA_VERSION="2.11.12" WORKDIR /build/ RUN yum install -y java-1.8.0 && \ yum install -y tar.x86_64 && \ yum install -y gzip gunzip RUN curl -O http://downloads.typesafe.com/scala/${SCALA_VERSION}/scala-${SCALA_VERSION}.tgz RUN tar -xzvf scala-${SCALA_VERSION}.tgz && \ rm -rf scala-${SCALA_VERSION}.tgz && \ echo "export SCALA_HOME=/home/ec2-user/scala-${SCALA_VERSION}" >> ~/.bashrc && \ echo "export PATH=$PATH:/home/ec2-user/scala-${SCALA_VERSION}/bin:/opt/llvm-3.9.0/bin" >> ~/.bashrc && \ source ~/.bashrc #SBT RUN curl https://bintray.com/sbt/rpm/rpm | tee /etc/yum.repos.d/bintray-sbt-rpm.repo RUN yum install -y sbt WORKDIR /build/runtime/ RUN yum install -y -q yum-utils RUN yum-config-manager --enable epel > /dev/null RUN yum -y update RUN yum -y group install "development tools" RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm RUN echo $'[alonid-llvm-3.9.0] \n\ name=Copr repo for llvm-3.9.0 owned by alonid \n\ baseurl=https://copr-be.cloud.fedoraproject.org/results/alonid/llvm-3.9.0/epel-7-$basearch/ \n\ type=rpm-md \n\ skip_if_unavailable=True \n\ gpgcheck=1 \n\ gpgkey=https://copr-be.cloud.fedoraproject.org/results/alonid/llvm-3.9.0/pubkey.gpg \n\ repo_gpgcheck=0 \n\ enabled=1 \n\ enabled_metadata=1' >> /etc/yum.repos.d/epel.repo RUN yum install -y clang-3.9.0 RUN yum install -y llvm-3.9.0 llvm-3.9.0-devel RUN yum install -y zip which libunwind libunwind-devel python-pip jq libcurl-devel RUN mkdir -p /build/runtime/lib/ && cp /usr/lib64/libunwind.so /build/runtime/lib/libunwind.so.8 && cp /usr/lib64/libunwind-x86_64.so.8 /build/runtime/lib/libunwind-x86_64.so.8 RUN yum install -y libidn libidn-devel && cp /usr/lib64/libidn.so.11 lib/libidn.so.11 RUN yum install -y git make openssl-devel RUN curl -O -L https://github.com/curl/curl/releases/download/curl-7_62_0/curl-7.62.0.tar.gz && tar -zxvf curl-7.62.0.tar.gz RUN curl -O -L https://github.com/openssl/openssl/archive/OpenSSL_1_0_2l.tar.gz && tar -zxvf OpenSSL_1_0_2l.tar.gz RUN git clone https://github.com/google/re2.git WORKDIR /build/runtime/re2/ ENV LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH ENV CXX=/opt/llvm-3.9.0/bin/clang++ LDFLAGS="-static-libstdc++" RUN make && make install RUN cp /usr/local/lib/libre2.so.0 /build/runtime/lib/libre2.so.0 WORKDIR /build/runtime/openssl-OpenSSL_1_0_2l RUN ./config --prefix=/opt/lib/ssl --openssldir=/opt/lib/ssl shared zlib RUN make && make install WORKDIR /build/runtime/curl-7.62.0/ ENV LD_LIBRARY_PATH=/opt/lib:/usr/lib64:$LD_LIBRARY_PATH RUN mkdir -p /build/runtime/lib/ssl && cp -r /opt/lib/ssl/lib /build/runtime/lib/ssl/lib RUN ./configure --prefix=$(/build/runtime) --with-ssl=/opt/lib/ssl && make && make install # libs RUN cp /lib/libcurl.so.4 /build/runtime/lib/libcurl.so.4 && cp /opt/lib/ssl/lib/libcrypto.so.1.0.0 /build/runtime/lib/libcrypto.so.1.0.0 && cp /opt/lib/ssl/lib/libssl.so.1.0.0 /build/runtime/lib/libssl.so.1.0.0 WORKDIR /build/runtime/ RUN rm OpenSSL_1_0_2l.tar.gz curl-7.62.0.tar.gz RUN mkdir -p /build/main WORKDIR /build/main ENV LD_LIBRARY_PATH=/opt/lib/ssl/lib:/usr/local/lib:$LD_LIBRARY_PATH ADD build.sbt /build/main/ ADD project/ /build/main/ CMD tail -f /dev/null
106. Hello world in Scala Native Build code with docker ڊେ FROM amazonlinux:latest ENV SCALA_VERSION="2.11.12" WORKDIR /build/ RUN yum install -y java-1.8.0 && \ yum install -y tar.x86_64 && \ yum install -y gzip gunzip RUN curl -O http://downloads.typesafe.com/scala/${SCALA_VERSION}/scala-${SCALA_VERSION}.tgz RUN tar -xzvf scala-${SCALA_VERSION}.tgz && \ rm -rf scala-${SCALA_VERSION}.tgz && \ echo "export SCALA_HOME=/home/ec2-user/scala-${SCALA_VERSION}" >> ~/.bashrc && \ echo "export PATH=$PATH:/home/ec2-user/scala-${SCALA_VERSION}/bin:/opt/llvm-3.9.0/bin" >> ~/.bashrc && \ source ~/.bashrc #SBT RUN curl https://bintray.com/sbt/rpm/rpm | tee /etc/yum.repos.d/bintray-sbt-rpm.repo RUN yum install -y sbt WORKDIR /build/runtime/ RUN yum install -y -q yum-utils RUN yum-config-manager --enable epel > /dev/null RUN yum -y update RUN yum -y group install "development tools" RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm RUN echo $'[alonid-llvm-3.9.0] \n\ name=Copr repo for llvm-3.9.0 owned by alonid \n\ baseurl=https://copr-be.cloud.fedoraproject.org/results/alonid/llvm-3.9.0/epel-7-$basearch/ \n\ type=rpm-md \n\ skip_if_unavailable=True \n\ gpgcheck=1 \n\ gpgkey=https://copr-be.cloud.fedoraproject.org/results/alonid/llvm-3.9.0/pubkey.gpg \n\ repo_gpgcheck=0 \n\ enabled=1 \n\ enabled_metadata=1' >> /etc/yum.repos.d/epel.repo RUN yum install -y clang-3.9.0 RUN yum install -y llvm-3.9.0 llvm-3.9.0-devel RUN yum install -y zip which libunwind libunwind-devel python-pip jq libcurl-devel RUN mkdir -p /build/runtime/lib/ && cp /usr/lib64/libunwind.so /build/runtime/lib/libunwind.so.8 && cp /usr/lib64/libunwind-x86_64.so.8 /build/runtime/lib/libunwind-x86_64.so.8 RUN yum install -y libidn libidn-devel && cp /usr/lib64/libidn.so.11 lib/libidn.so.11 RUN yum install -y git make openssl-devel RUN curl -O -L https://github.com/curl/curl/releases/download/curl-7_62_0/curl-7.62.0.tar.gz && tar -zxvf curl-7.62.0.tar.gz RUN curl -O -L https://github.com/openssl/openssl/archive/OpenSSL_1_0_2l.tar.gz && tar -zxvf OpenSSL_1_0_2l.tar.gz RUN git clone https://github.com/google/re2.git WORKDIR /build/runtime/re2/ ENV LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH ENV CXX=/opt/llvm-3.9.0/bin/clang++ LDFLAGS="-static-libstdc++" RUN make && make install RUN cp /usr/local/lib/libre2.so.0 /build/runtime/lib/libre2.so.0 WORKDIR /build/runtime/openssl-OpenSSL_1_0_2l RUN ./config --prefix=/opt/lib/ssl --openssldir=/opt/lib/ssl shared zlib RUN make && make install WORKDIR /build/runtime/curl-7.62.0/ ENV LD_LIBRARY_PATH=/opt/lib:/usr/lib64:$LD_LIBRARY_PATH RUN mkdir -p /build/runtime/lib/ssl && cp -r /opt/lib/ssl/lib /build/runtime/lib/ssl/lib RUN ./configure --prefix=$(/build/runtime) --with-ssl=/opt/lib/ssl && make && make install # libs RUN cp /lib/libcurl.so.4 /build/runtime/lib/libcurl.so.4 && cp /opt/lib/ssl/lib/libcrypto.so.1.0.0 /build/runtime/lib/libcrypto.so.1.0.0 && cp /opt/lib/ssl/lib/libssl.so.1.0.0 /build/runtime/lib/libssl.so.1.0.0 WORKDIR /build/runtime/ RUN rm OpenSSL_1_0_2l.tar.gz curl-7.62.0.tar.gz RUN mkdir -p /build/main WORKDIR /build/main ENV LD_LIBRARY_PATH=/opt/lib/ssl/lib:/usr/local/lib:$LD_LIBRARY_PATH ADD build.sbt /build/main/ ADD project/ /build/main/ CMD tail -f /dev/null Oh, huge scala-on-lambda-snappy/scalanative/Dockerfile
107. Hello world in Scala Native ‣ Build docker container & build executable %PDLFSίϯςφͷϏϧυͱɺ࣮ߦՄೳϑΝΠϧͷϏϧυ # bootstrap $ cd scala-on-lambda-snappy/scalanative $ docker build -t native-builder-image . $ docker run --name native-builder -dt native-builder-image $ docker cp ./ native-builder:/build/main/ $ docker exec -it native-builder sbt 'project hello' nativeLink $ docker cp native-builder:/build/main/hello/target/scala-2.11/hello-out \ hello/bootstrap $ zip -Dj hello.zip ./hello/bootstrap # Deploy this zip # runtime layer $ docker cp native-builder:/build/runtime/ ./runtime/ $ cd ./runtime $ zip -r runtime.zip . # Publish this zip as Lambda Layer
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113. "
 Hello world
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114. Hello world in GraalVM native image Build is easier than Scala Native a bit 4DBMB
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115. Hello world in GraalVM native image Build is easier than Scala Native a bit ‣ Write Scala code 4DBMBͷίʔυΛॻ͘
116. Hello world in GraalVM native image Build is easier than Scala Native a bit ‣ Write Scala code ‣ Build fat-jar with sbt-assembly TCUBTTFNCMZͰGBUKBSΛϏϧυ͢Δ
117. Hello world in GraalVM native image Build is easier than Scala Native a bit ‣ Write Scala code ‣ Build fat-jar with sbt-assembly ‣ Build the GraalVM docker container ‣ Community Edition, in this sample (SBBM7.ͷ%PDLFSίϯςφΛϏϧυ͢Δ
118. Hello world in GraalVM native image Build is easier than Scala Native a bit ‣ Write Scala code ‣ Build fat-jar with sbt-assembly ‣ Build the GraalVM docker container ‣ Community Edition, in this sample ‣ Build executable from jar with the docker and deploy %PDLFSΛ࢖ͬͯKBS͔Β࣮ߦՄೳϑΝΠϧΛϏϧυ͠ɺσϓϩΠ͢Δ
119. Hello world in GraalVM native image ‣ build.sbt // build.sbt lazy val commonSettings = Seq( scalaVersion := "2.12.8" ) lazy val hello = (project in file("hello")) .settings( commonSettings, libraryDependencies ++= Seq( "com.softwaremill.sttp" %% "core" % "1.5.11", "io.argonaut" %% "argonaut" % "6.2.2" ) )
120. Hello world in GraalVM native image ‣ Almost the same as Scala Native's Hello world 4DBMB
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     XPSMEͱ΄΅ಉ͡ import argonaut._; import Argonaut._; import com.softwaremill.sttp._ object Hello { implicit val backend = HttpURLConnectionBackend() implicit val requestCodec = casecodec1(Request.apply, Request.unapply)("name") def main(args: Array[String]): Unit = { val runtimeApi = System.getenv("AWS_LAMBDA_RUNTIME_API") while (true) { val next = sttp.get(uri"http://$runtimeApi/2018-06-01/runtime/invocation/next").send() val requestId = next.headers("lambda-runtime-aws-request-id").head val request = next.unsafeBody.decodeOption[Request].get val responseJson = Json("message" -> jString(s"Hello, ${request.name}!")).nospaces sttp.post(uri"http://$runtimeApi/2018-06-01/runtime/invocation/$requestId/response") .body(responseJson).send() } } } case class Request(name: String)
121. Hello world in GraalVM native image ‣ First, build fat-jar ‣ Then, build native image from jar with GraalVM ·ͣGBUKBSΛϏϧυ
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122. Hello world in GraalVM native image ‣ Let's run! 1BDLBHF
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127. "
 More practical example:
 AWS Integration
 with Scala.js ΋͏গ࣮͠༻తͳྫ
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128. AWS integration with Scala.js ‣ Use AWS SDK for JavaScript ‣ There is some tips to use the SDK type safely ‣ In this example, use DynamoDB Document Client "84
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129. Querying DynamoDB with Scala.js ‣ AWS.scala // AWS.scala @JSImport("aws-sdk", JSImport.Namespace) @js.native object AWS extends js.Object { @js.native object DynamoDB extends js.Object { @js.native class DocumentClient extends js.Object { def query( param: js.Dictionary[String], callback:js.Function2[js.Object, js.Object, js.Any] ): Unit = js.native } } }
130. Querying DynamoDB with Scala.js ‣ Import AWS SDK for JavaScript // AWS.scala @JSImport("aws-sdk", JSImport.Namespace) @js.native object AWS extends js.Object { @js.native object DynamoDB extends js.Object { @js.native class DocumentClient extends js.Object { def query( param: js.Dictionary[String], callback:js.Function2[js.Object, js.Object, js.Any] ): Unit = js.native } } } "84
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131. Querying DynamoDB with Scala.js ‣ Facade for DocumentClient to handle type safely // AWS.scala @JSImport("aws-sdk", JSImport.Namespace) @js.native object AWS extends js.Object { @js.native object DynamoDB extends js.Object { @js.native class DocumentClient extends js.Object { def query( param: js.Dictionary[String], callback:js.Function2[js.Object, js.Object, js.Any] ): Unit = js.native } } } %PDVNFOU$MJFOUΛܕ҆શʹѻ͏ͨΊͷϑΝαʔυ
132. Querying DynamoDB with Scala.js ‣ DynamoAccessor.scala object DynamoAccessor { val documentClient = new AWS.DynamoDB.DocumentClient() @JSExportTopLevel("handleRequest") def handleRequest(req: Request, cx: js.Object, callback: Callback): Unit = { val param = js.Dynamic.literal( "TableName" -> "PriceHistory", "KeyConditionExpression" -> "#ji = :jobid", "ExpressionAttributeNames" -> js.Dynamic.literal("#ji" -> "JobId"), "ExpressionAttributeValues" -> js.Dynamic.literal(":jobid" -> req.jobId) ) documentClient.query( param, (err: js.Object, data: js.Object) => callback(null, data)) } }
133. Querying DynamoDB with Scala.js ‣ Initialize DocumentClient object DynamoAccessor { val documentClient = new AWS.DynamoDB.DocumentClient() @JSExportTopLevel("handleRequest") def handleRequest(req: Request, cx: js.Object, callback: Callback): Unit = { val param = js.Dynamic.literal( "TableName" -> "PriceHistory", "KeyConditionExpression" -> "#ji = :jobid", "ExpressionAttributeNames" -> js.Dynamic.literal("#ji" -> "JobId"), "ExpressionAttributeValues" -> js.Dynamic.literal(":jobid" -> req.jobId) ) documentClient.query( param, (err: js.Object, data: js.Object) => callback(null, data)) } } %PDVNFOU$MJFOUͷΠχγϟϥΠζ
134. Querying DynamoDB with Scala.js ‣ Prepare param (using Dynamic, so not type safe...) object DynamoAccessor { val documentClient = new AWS.DynamoDB.DocumentClient() @JSExportTopLevel("handleRequest") def handleRequest(req: Request, cx: js.Object, callback: Callback): Unit = { val param = js.Dynamic.literal( "TableName" -> "PriceHistory", "KeyConditionExpression" -> "#ji = :jobid", "ExpressionAttributeNames" -> js.Dynamic.literal("#ji" -> "JobId"), "ExpressionAttributeValues" -> js.Dynamic.literal(":jobid" -> req.jobId) ) documentClient.query( param, (err: js.Object, data: js.Object) => callback(null, data)) } } ύϥϝʔλͷ༻ҙ
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135. Querying DynamoDB with Scala.js ‣ To make it type safe, define type like the Request trait object DynamoAccessor { val documentClient = new AWS.DynamoDB.DocumentClient() @JSExportTopLevel("handleRequest") def handleRequest(req: Request, cx: js.Object, callback: Callback): Unit = { val param = js.Dynamic.literal( "TableName" -> "PriceHistory", "KeyConditionExpression" -> "#ji = :jobid", "ExpressionAttributeNames" -> js.Dynamic.literal("#ji" -> "JobId"), "ExpressionAttributeValues" -> js.Dynamic.literal(":jobid" -> req.jobId) ) documentClient.query( param, (err: js.Object, data: js.Object) => callback(null, data)) } } ܕ҆શʹ͢ΔͳΒɺ3FRVFTUτϨΠτͷΑ͏ʹܕΛఆٛ͢Δ
136. Querying DynamoDB with Scala.js ‣ Submit a query with the client object DynamoAccessor { val documentClient = new AWS.DynamoDB.DocumentClient() @JSExportTopLevel("handleRequest") def handleRequest(req: Request, cx: js.Object, callback: Callback): Unit = { val param = js.Dynamic.literal( "TableName" -> "PriceHistory", "KeyConditionExpression" -> "#ji = :jobid", "ExpressionAttributeNames" -> js.Dynamic.literal("#ji" -> "JobId"), "ExpressionAttributeValues" -> js.Dynamic.literal(":jobid" -> req.jobId) ) documentClient.query( param, (err: js.Object, data: js.Object) => callback(null, data)) } } ΫϥΠΞϯτΛ࢖ͬͯΫΤϦΛ౤͛Δ
137. Facade library for aws-sdk ‣ exoego/aws-sdk-scalajs-facade 
 https://github.com/exoego/aws-sdk-scalajs-facade ‣ Scala.js type facade for aws-sdk-js ‣ A fork of balshor/aws-sdk-scalajs-facade ‣ It's also good for learning how to write facade type by yourself FYPFHPBXTTELTDBMBKTGBDBEF
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138. AWS with Scala Native? ‣ Currently, there's no Scala Native library of AWS SDK ‣ So need to implement a client which invokes AWS REST API ‣ cf. rusoto: A third-party AWS SDK for Rust https://rusoto.org 4DBMB
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139. AWS with GraalVM? ‣ GraalVM is able to build native images from Java, however... (SBBM7.͸+BWB͔ΒOBUJWF
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140. AWS with GraalVM? ‣ GraalVM is able to build native images from Java, however... ‣ There is some limitations of SubstrateVM 4VCTUSBUF7.ͷ͍͔ͭ͘ͷ੍ݶ͕͋Δ
141. AWS with GraalVM? ‣ GraalVM is able to build native images from Java, however... ‣ There is some limitations of SubstrateVM ‣ AOT compilation doesn't support Dynamic class loading
 https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md ྫ͑͹ɺDMBTTͷಈతͳMPBEJOH
     
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142. AWS with GraalVM? ‣ GraalVM is able to build native images from Java, however... ‣ There is some limitations of SubstrateVM ‣ AOT compilation doesn't support Dynamic class loading
 https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md ‣ AWS SDK for Java uses commons-logging which uses ClassLoader... "84
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143. AWS with GraalVM? ‣ GraalVM is able to build native images from Java, however... ‣ There is some limitations of SubstrateVM ‣ AOT compilation doesn't support Dynamic class loading
 https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md ‣ AWS SDK for Java uses commons-logging which uses ClassLoader... "84
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144. "
 More practical example:
 Kuromoji with GraalVM ΋͏গ࣮͠༻తͳྫ
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145. Kuromoji ‣ atilika / kuromoji https://github.com/atilika/kuromoji ‣ A Japanese morphological analyzer written in Java ‣ Its name is derived from "ࠇจࣈ" ‣ A traditional small wooden knife to cut Japanese sweets in tea ceremony ,VSPNPKJ
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146. Kuromoji ‣ atilika / kuromoji https://github.com/atilika/kuromoji ‣ A Japanese morphological analyzer written in Java ‣ Its name is derived from "ࠇจࣈ" ‣ A traditional small wooden knife to cut Japanese sweets in tea ceremony ‣ Let's create a morphological analysis API with this! ؆୯ͳܗଶૉղੳ"1*Λ࡞ͬͯΈΑ͏ʂ
147. Kuromoji with GraalVM ‣ Kuromoji.scala object Kuromoji { implicit val backend = HttpURLConnectionBackend() def main(args: Array[String]): Unit = { val runtime = System.getenv("AWS_LAMBDA_RUNTIME_API") val tokenizer = new Tokenizer() while (true) { val req = sttp.get(uri"http://$runtime/2018-06-01/runtime/invocation/next").send() val requestId = req.headers("lambda-runtime-aws-request-id").head val text = Parse.parseWith(req.unsafeBody, _.field("text").flatMap(_.string).get, identity) val results = tokenizer.tokenize(text).asScala.map { token => jString(s"${token.getSurface}: ${token.getAllFeatures}") } sttp.post(uri"http://$runtime/2018-06-01/runtime/invocation/$requestId/response") .body(Json.array(results :_*).nospaces).send() } } }
148. Kuromoji with GraalVM ‣ Parse text with Kuromoji & tokenize object Kuromoji { implicit val backend = HttpURLConnectionBackend() def main(args: Array[String]): Unit = { val runtime = System.getenv("AWS_LAMBDA_RUNTIME_API") val tokenizer = new Tokenizer() while (true) { val req = sttp.get(uri"http://$runtime/2018-06-01/runtime/invocation/next").send() val requestId = req.headers("lambda-runtime-aws-request-id").head val text = Parse.parseWith(req.unsafeBody, _.field("text").flatMap(_.string).get, identity) val results = tokenizer.tokenize(text).asScala.map { token => jString(s"${token.getSurface}: ${token.getAllFeatures}") } sttp.post(uri"http://$runtime/2018-06-01/runtime/invocation/$requestId/response") .body(Json.array(results :_*).nospaces).send() } } } ,VSPNPKJΛ࢖ͬͯςΩετΛύʔε͠ɺτʔΫϯԽ͢Δ
149. Kuromoji with GraalVM
150. Other examples in repo ‣ Takeuchi function ‣ As known as "Tarai-mawashi Function" ‣ High load function; when takeuchi(2n, n, 0), O(n^n) ‣ Slack notification of S3 put with Scala Native ͦͷଞͷαϯϓϧ https://github.com/todokr/scala-on-lambda-snappy
151. Pros & Cons ௕ॴͱ୹ॴ
152. Scala.js ‣ Pros ‣ Very small code size (hello.zip: 4KB) ‣ Integration with AWS services ‣ Cons ‣ Need to write some boilerplaty facade for type safe ‣ Need to know Node.js API, ecosystem, manners, etc... ‣ I use this for ‣ DynamoDB accessor ௕ॴ
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153. Scala Native ‣ Pros ‣ Relatively small package size (hello.zip: 1.3M) ‣ Cons ‣ Tricky to build for Lambda ‣ Need to check if the library is supported for Scala Native ௕ॴ
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154. Native image built by GraalVM ‣ Pros ‣ Easy to use Scala/Java libraries ‣ Cons ‣ Relatively large package size (hello.zip: 7.3MB) ‣ Tricky to build a bit ‣ Some limitation of AOT compilation ௕ॴ
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155. My case: EC Discount Notifier cron Cloudwatch Events Crawler Price history Amazon etc. Notifier ࢲͷར༻έʔε
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156. My case: EC Discount Notifier cron Cloudwatch Events Crawler Price history Amazon etc. Notifier Ϋϩʔϥʔ͸(SBBM7.
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157. My case: EC Discount Notifier cron Cloudwatch Events Crawler Price history Amazon etc. Notifier /PUJpFS͸4DBMB+4
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158. Java improvement for the container age ‣ Java continue to evolve! +BWB΋ਐԽ͠ଓ͚͍ͯΔ
159. Java improvement for the container age ‣ Java continue to evolve! ‣ jlink (Java9) ‣ A command-line tool to create customized small JRE খ͞ͳ+3&Λ࡞ΔͨΊͷKMJOL
160. Java improvement for the container age ‣ Java continue to evolve! ‣ jlink (Java9) ‣ A command-line tool to create customized small JRE ‣ Class-Data Sharing (JEP 310, 341) ‣ storing the preprocessed class metadata to file ‣ loading classes from CDS file improves startup performance ىಈΛߴ଎Խ͢Δ$MBTT%BUB
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161. ✅
 Conclusion ·ͱΊ
162. ‣ Run Scala on Lambda without JVM is not so simple 4DBMBΛ+7.ͳ͠Ͱಈ͔͢ͷ͸ͦΜͳʹγϯϓϧͰ͸ͳ͍
163. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ͔͠͠ɺಛผͳঢ়گԼͰ͸ͱͯ΋ύϫϑϧ
164. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ‣ So, we should consider the trade-off ͳͷͰɺࢲͨͪ͸τϨʔυΦϑΛߟ͑Δඞཁ͕͋Δ
165. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ‣ So, we should consider the trade-off ‣ Need to integrate with other AWS service 
 => Scala.js with Node.js runtime "84αʔϏεͱͷ࿈ܞ͕ඞཁ
     
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166. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ‣ So, we should consider the trade-off ‣ Need to integrate with other AWS service 
 => Scala.js with Node.js runtime ‣ Need to use Java library & run snappy 
 => Native Image with GraalVM +BWBͷϥΠϒϥϦΛ࢖͍ɺαΫαΫಈ͔͢ඞཁ͕͋Δ
 
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167. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ‣ So, we should consider the trade-off ‣ Need to integrate with other AWS service 
 => Scala.js with Node.js runtime ‣ Need to use Java library & run snappy 
 => Native Image with GraalVM ‣ Invoked constantly and throughput is not so important 
 => Just use Java8 runtime ఆظతͳݺͼग़͕͋͠Γɺεϧʔϓοτ͕ॏཁͰͳ͍
 
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168. ‣ Run Scala on Lambda without JVM is not so simple ‣ However, it's powerful on some special occasion ‣ So, we should consider the trade-off ‣ Need to integrate with other AWS service 
 => Scala.js with Node.js runtime ‣ Need to use Java library & run snappy 
 => Native Image with GraalVM ‣ Invoked constantly and throughput is not so important 
 => Just use Java8 runtime ‣ _ => Give up and use other runtime such as Python or Node.js ͦΕҎ֎ͳΒɺఘΊͯ1ZUIPO΍/PEFKTͳͲଞͷϥϯλΠϜΛ࢖͓͏
169. Thank you! Contact(via) match { case GitHub => "@todokr" case Twitter => "@todokr" case Facebook => "shusnuke.tadokoro" case _ => Dynamic.talk } ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ