Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
KtorでおうちAPIをリプレースした話
Search
yagi2
December 18, 2017
Programming
1
1.1k
KtorでおうちAPIをリプレースした話
2017/12/18 CA.kt #5 @大阪 LT
yagi2
December 18, 2017
Tweet
Share
More Decks by yagi2
See All by yagi2
Kotlin DSLを理解してみる / Understanding Kotlin DSL
yagi2
4
2.5k
おうちにAPIを生やすお話.pdf
yagi2
0
490
略解 The Navigation Architecture Component
yagi2
1
220
10分で完全に(雰囲気を)理解するマテリアルデザイン
yagi2
1
440
Other Decks in Programming
See All in Programming
実践 Dev Containers × Claude Code
touyu
1
240
MLH State of the League: 2026 Season
theycallmeswift
0
160
MCPで実現するAIエージェント駆動のNext.jsアプリデバッグ手法
nyatinte
6
840
Google I/O recap web編 大分Web祭り2025
kponda
0
2.9k
CEDEC 2025 『ゲームにおけるリアルタイム通信への QUIC導入事例の紹介』
segadevtech
3
970
あなたとJIT, 今すぐアセンブ ル
sisshiki1969
1
720
学習を成果に繋げるための個人開発の考え方 〜 「学習のための個人開発」のすすめ / personal project for leaning
panda_program
1
110
Understanding Ruby Grammar Through Conflicts
yui_knk
1
120
新世界の理解
koriym
0
140
Jakarta EE Core Profile and Helidon - Speed, Simplicity, and AI Integration
ivargrimstad
0
190
Langfuseと歩む生成AI活用推進
licux
3
300
The State of Fluid (2025)
s2b
0
200
Featured
See All Featured
Faster Mobile Websites
deanohume
309
31k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
4 Signs Your Business is Dying
shpigford
184
22k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.4k
Visualization
eitanlees
147
16k
The World Runs on Bad Software
bkeepers
PRO
70
11k
Practical Orchestrator
shlominoach
190
11k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
1.4k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
A better future with KSS
kneath
239
17k
Bash Introduction
62gerente
614
210k
Transcript
torͰ͓͏ͪAPI ɹΛϦϓϨʔεͨ͠ 2017/12/18 CA.kt #5 @େࡕ Itsuki AOYAGI
͍͋ͭ͝͞ - ࣗݾհ - • ໊લ : ੨༄ थ Itsuki
AOYAGIʢ23ʣ a.k.a ͗ʹ͍ • AndroidΞϓϦΤϯδχΞ • Kotlinྺ : • Twitter : @yaginier • GitHub etc… : @yagi2 / @yagi21 • ͓͏͍͖ͪͩ͢
͍͋ͭ͝͞ - ࣗݾհ - • ໊લ : ੨༄ थ Itsuki
AOYAGIʢ23ʣ a.k.a ͗ʹ͍ • AndroidΞϓϦΤϯδχΞ • Kotlinྺ : • Twitter : @yaginier • GitHub etc… : @yagi2 / @yagi21 • ͓͏͍͖ͪͩ͢
͓͏ͪϋοΫͯ͠·͔͢ʁ
͓͏ͪϋοΫ ͓͏ͪΛΑΓշదͳͷʹ͢ΔͨΊʹ ΨδΣοταʔϏεΛΈ߹Θͤͯ ϋοϐʔʹ͢ΔͨΊͷ͋Ε͜Ε ɻ ࠷ۙͩͱεϚʔτεϐʔΧʔ͕͍ͬͺ͍͋ΔͷͰ ͦΕΒܦ༝ͰՈిͱ͔Λૢ࡞Ͱ͖Δɻ
͓͏ͪϋοΫ - զ͕Ո - ɾRaspberry Piʢॳʣ ɹˠ ͓͏ͪAPI͕͍͑ͯΔʢPHPʣ ɹɹˠ ϒϥβ͔ΒHTTPSܦ༝ͯ͠ϖʔδ͔Βୟ͘
ɹɹˠ ࣗ࡞ͷAndroidΞϓϦ͔ΒϦΫΤετ Ұྫ ɾࣗͷσεΫτοϓPCͷిݯΛ֎͔ΒೖΕΔ ɾΤΞίϯɺςϨϏͷ֎ઢͰૢ࡞͢ΔՈిͷૢ࡞ ɾϥδΦʢRasPiΛrtmpετϦʔϛϯάͬͯϥδΦʹ͍ͯͨ͠ʣ
͓͏ͪϋοΫ - զ͕Ո - ɾRaspberry Piʢॳʣ ɹˠ ͓͏ͪAPI͕͍͑ͯΔʢPHPʣ ɹɹˠ ϒϥβ͔ΒHTTPSܦ༝ͯ͠ϖʔδ͔Βୟ͘
ɹɹˠ ࣗ࡞ͷAndroidΞϓϦ͔ΒϦΫΤετ Ұྫ ɾࣗͷσεΫτοϓPCͷిݯΛ֎͔ΒೖΕΔ ɾΤΞίϯɺςϨϏͷ֎ઢͰૢ࡞͢ΔՈిͷૢ࡞ ɾϥδΦʢRasPiΛrtmpετϦʔϛϯάͬͯϥδΦʹ͍ͯͨ͠ʣ
͓͏ͪϋοΫ - զ͕Ո - ɾRaspberry Piʢॳʣ ɹˠ ͓͏ͪAPI͕͍͑ͯΔʢPHPʣ ɹɹˠ ϒϥβ͔ΒHTTPSܦ༝ͯ͠ϖʔδ͔Βୟ͘
ɹɹˠ ࣗ࡞ͷAndroidΞϓϦ͔ΒϦΫΤετ Ұྫ ɾࣗͷσεΫτοϓPCͷిݯΛ֎͔ΒೖΕΔ ɾΤΞίϯɺςϨϏͷ֎ઢͰૢ࡞͢ΔՈిͷૢ࡞ ɾϥδΦʢRasPiΛrtmpετϦʔϛϯάͬͯϥδΦʹ͍ͯͨ͠ʣ ͍ͭ͜ΛKotlinʹॻ͖͑Δ
αʔόʔαΠυ Kotlin
αʔόʔαΠυKotlin ɾSpring Boot ɹҎલKotlin + Spring BootͰJSONΛు͘APIΛ࡞ͬͨ͜ͱ͕͋Δ ɹ ͦͷ࣌ͷϒϩά →
KotlinͱSpring BootΛͬͯαΫοͱୟ͚ΔAPIΛ࡞Δ ɾKotr ɹΊͬͪΌബ͍ ɹ ɹKtor is a framework for quickly creating web applications in Kotlin with minimal effort.
Ktor fun main(args: Array<String>) { embeddedServer(Netty, 8080) { routing {
get("/") { call.respondText("Hello, world!", ContentType.Text.Html) } } }.start(wait = true) } ɾബ͗ͯ͢README͕͍ ɹɹɹɹউखͳΠϝʔδ ɹɹɹɹɹɹɹSpringBoot → Ruby on Rails ɹɹɹɹɹɹɹKtor → Sinatra
Ktor - WoL API - KtorΛͬͯɺࣗPCͷిݯΛ֎͔ΒೖΕΔAPIΛॻ͖͢ ݱࡏͷ༷ ɾΫϥΠΞϯτPOSTͰରͷMacΞυϨεΛ͛Δ ɾαʔόʔड͚औͬͨΒͦͷMacΞυϨεʹରͯ͠WoL͢Δ ɹʢexecͰwakeonlanίϚϯυΛୟ͍͍ͯΔʣ
Ktor - WoL API - KtorΛͬͯɺࣗPCͷిݯΛ֎͔ΒೖΕΔAPIΛॻ͖͢ ৽͍༷͠ ɾΫϥΠΞϯτPOSTͰରͷϗετ໊Λ͛Δ ɹˠ ϗετ໊ͦΕʹ४ͣΔͷʢཧ༝ޙड़ʣΛ͛Δ
ɹˠ DBαʔόʔଆͰϗετ໊ͱMacΞυϨεΛ͓͍࣋ͬͯͯࢀর ɾαʔόʔड͚औͬͨΒରʹରͯ͠WoL͢Δ ɹ͔ͤͬ͘ͳͷͰϚδοΫύέοτૹ৴Λ࣮͢Δ
Ktor - WoL API - install(Routing) { post("/wol") { val
name = call.receiveParameters()[“name”] val host = ϗετΛDB͔Βݕࡧ(name) if (host == null) { call.respond("ݟ͔ͭΒͳ͔ͬͨ") } else { try { WakeOnLan(host.macAddr).sendMagicPacket() call.respond("ૹͬͨ") } catch (e: IOException) { call.respond("ૹΔͷʹࣦഊͨ͠") } } } ɾPOSTͰड͚औͬͯϚδοΫύέοτΛૹΔ ɹˠ Ͳͷϗετʹରͯ͠ϚδοΫύέοτΛૹΔͷ͔ύϥϝʔλͰ ɹˠ DBʹExposed + MySQLΛ༻
Ktor - WoL API - install(Routing) { post("/wol") { val
name = call.receiveParameters()[“name”] val host = ϗετΛDB͔Βݕࡧ(name) if (host == null) { call.respond("ݟ͔ͭΒͳ͔ͬͨ") } else { try { WakeOnLan(host.macAddr).sendMagicPacket() call.respond("ૹͬͨ") } catch (e: IOException) { call.respond("ૹΔͷʹࣦഊͨ͠") } } } ɾPOSTͰड͚औͬͯϚδοΫύέοτΛૹΔ ɹˠ Ͳͷϗετʹରͯ͠ϚδοΫύέοτΛૹΔͷ͔ύϥϝʔλͰ ɹˠ DBʹExposed + MySQLΛ༻
Ktor - WoL API - install(Routing) { post("/wol") { val
name = call.receiveParameters()[“name”] val host = ϗετΛDB͔Βݕࡧ(name) if (host == null) { call.respond("ݟ͔ͭΒͳ͔ͬͨ") } else { try { WakeOnLan(host.macAddr).sendMagicPacket() call.respond("ૹͬͨ") } catch (e: IOException) { call.respond("ૹΔͷʹࣦഊͨ͠") } } } ɾPOSTͰड͚औͬͯϚδοΫύέοτΛૹΔ ɹˠ Ͳͷϗετʹରͯ͠ϚδοΫύέοτΛૹΔͷ͔ύϥϝʔλͰ ɹˠ DBʹExposed + MySQLΛ༻ object Computers : IntIdTable() { val hostName = varchar("hostname", 50).index() val macAddr = varchar("mac_addr", 50) } class Computer(id: EntityID<Int>) : IntEntity(id) { companion object : IntEntityClass<Computer>(Computers) var hostname by Computers.hostName var macAddr by Computers.macAddr } fun findByHostName(hostName: String?): Computer? { return transaction { Computer.find { Computers.hostName eq hostName }.firstOrNull() } }
Ktor - WoL API - install(Routing) { post("/wol") { val
name = call.receiveParameters()[“name”] val host = ϗετΛDB͔Βݕࡧ(name) if (host == null) { call.respond("ݟ͔ͭΒͳ͔ͬͨ") } else { try { WakeOnLan(host.macAddr).sendMagicPacket() call.respond("ૹͬͨ") } catch (e: IOException) { call.respond("ૹΔͷʹࣦഊͨ͠") } } } ɾPOSTͰड͚औͬͯϚδοΫύέοτΛૹΔ ɹˠ Ͳͷϗετʹରͯ͠ϚδοΫύέοτΛૹΔͷ͔ύϥϝʔλͰ ɹˠ DBʹExposed + MySQLΛ༻
Ktor - WoL API - class WakeOnLan(private val macAddress: String)
{ @Throws(IOException::class) fun sendMagicPacket() { val iNetAddress = InetAddress.getByName("255.255.255.255") val magicPacket = getMagicPacket(macAddress) DatagramSocket().send(DatagramPacket(magicPacket, magicPacket.size, iNetAddress, 8080)) } private fun getMagicPacket(macAddress: String): ByteArray { val packet = ByteArray(102) var index = 0 repeat(6) { packet[index++] = 0xFF.toByte() } val macAddressByte = getMacAddressByte(macAddress) repeat(16) { repeat(6) { packet[index++] = macAddressByte[it] } } return packet } private fun getMacAddressByte(macAddress: String): ByteArray = macAddress.split(":").map { Integer.parseInt(it, 16).toByte() }.toByteArray() }
ʂ ͨ͠ͷͰɺGoogleHome͔Β͑ΔΑ͏ʹ͢Δ
Google Home + IFTTT Google HomeͷԻίϚϯυͰIFTTTͷτϦΨʔΛୟ͍ͯ IFTTTWebHookͰ͓ՈAPIʹPOST͢Δ
Google Home + IFTTT ී௨ʹϓϩάϥϜ͔ΒPOST͢Δͱ͖ $ curl --data-urlencode "name=hoge"
http://api.example.com/wol Google Homeͩͱ”name=hoge”͕ͭΒ͍ ɹˠ ຊޠͰͷΤΠϦΞεΛ͚ͯDBͷΧϥϜʹೖΕ͓ͯ͘ ྫʣʮͶ͐ɺGoogle ͏ͪͷ͜ͱΓΛىͯ͜͠ʯ ɹɹˠ name=͜ͱΓ ɹɹˠ DB͔Βʮ͜ͱΓʯͰҰக͢ΔͷΛݕࡧͯ͠Δ
Google Home + IFTTT object Computers : IntIdTable() { val
hostName = varchar("hostname", 50).index() val macAddr = varchar("mac_addr", 50) } class Computer(id: EntityID<Int>) : IntEntity(id) { companion object : IntEntityClass<Computer>(Computers) var hostname by Computers.hostName var macAddr by Computers.macAddr } fun findByHostName(hostName: String?): Computer? { return transaction { Computer.find { Computers.hostName eq hostName }.firstOrNull() } } object Computers : IntIdTable() { val hostName = varchar("hostname", 50).index() val name = varchar("name", 50) val macAddr = varchar("mac_addr", 50) } class Computer(id: EntityID<Int>) : IntEntity(id) { companion object : IntEntityClass<Computer>(Computers) var hostname by Computers.hostName var name by Computers.name var macAddr by Computers.macAddr } fun findByHostName(hostName: String?): Computer? { return transaction { Computer.find { Computers.hostName eq hostName }.firstOrNull() } } fun findByName(name: String?): Computer? { return transaction { Computer.find { Computers.name eq name }.firstOrNull() } }
Google Home + IFTTT transaction { Computer.new { hostname =
"kotori" name = "͜ͱΓ" macAddr = “FF:FF:FF:FF:FF:FF” } } ͓Ոʹ͋ΔϚγϯΛDBʹೖΕͯ͋͛Δɻ $ curl --data-urlencode "name=kotori" http://api.example.com:/wol ʮͶ͐ɺGoogle ͓͏ͪͷ͜ͱΓΛىͯ͜͠ʯ ✨྆ํڞOK✨
Google Home + IFTTT ҙ ʮͶ͐ɺGoogle ͏ͪͷ͜ͻͳͨΛىͯ͜͠ʯ → ͬͯ͘Δ໊લ͕ʮ͜ ͻͳ
ͨʯ ʮͶ͐ɺGoogle ͏ͪͷͪΌͪΌΛىͯ͜͠ʯ → ͬͯ͘Δ໊લ͕ʮʑʯ ղܾࡦ → 1ճࢼͯ͠Կ͕ͬͯ͘Δͷ͔ΛݟΔ
ຊͷ͓͠ͳ͕͖ ɾAPI ɹˠ https://github.com/yagi2/Kaya ɾKtor ɹˠ https://github.com/ktorio/ktor ɾExposed ɹˠ https://github.com/JetBrains/Exposed
Have a Nice Kotlin!