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
Building the layered server application achieve...
Search
OKUNOKENTARO
December 01, 2019
Technology
1
3.9k
Building the layered server application achieved by InversifyJS
The slide that used when I talked in JSConf JP.
OKUNOKENTARO
December 01, 2019
Tweet
Share
More Decks by OKUNOKENTARO
See All by OKUNOKENTARO
トレタO/X アーキテクチャ移行記 Next.js App Router化への道のり / TORETA TECH UPDATE 1
okunokentaro
5
11k
Podcastを継続する技術 / refactoradio-240119
okunokentaro
1
190
Webアプリケーション設計の第一歩は ディレクトリの整理から / Encraft 1
okunokentaro
34
10k
JSONとJSON Schemaを改めて理解する / tokyo_study
okunokentaro
9
2.4k
それでもどうしてRecoilを使うのか / Harajuku.ts Meetup Recoil
okunokentaro
19
5.6k
TypeScriptは10年でこんなに進化しました / TechFeed Experts Night 11
okunokentaro
6
1.7k
Hasura.io RDBをサクサク作る方法はARやO/RMだけじゃなくなりました/hasura-io
okunokentaro
5
680
コードには型アノテーションよりも要件アノテーションを増やせ!/harajukuts2
okunokentaro
14
6.4k
10年と3ヶ月でWebサービスを作った話 / Piyogrammer Conference 2021
okunokentaro
2
1.1k
Other Decks in Technology
See All in Technology
Google Agentspaceを実際に導入した効果と今後の展望
mixi_engineers
PRO
3
350
AIのグローバルトレンド 2025 / ai global trend 2025
kyonmm
PRO
1
120
Unson OS|48時間で「売れるか」を判定する AI 市場検証プラットフォーム
unson
0
180
UDDのススメ - 拡張版 -
maguroalternative
1
350
Amazon Q と『音楽』-ゲーム音楽もAmazonQで作成してみた感想-
senseofunity129
0
120
データ基盤の管理者からGoogle Cloud全体の管理者になっていた話
zozotech
PRO
0
400
Amazon Qで2Dゲームを作成してみた
siromi
0
120
アカデミーキャンプ 2025 SuuuuuuMMeR「燃えろ!!ロボコン」 / Academy Camp 2025 SuuuuuuMMeR "Burn the Spirit, Robocon!!" DAY 1
ks91
PRO
0
130
LLM 機能を支える Langfuse / ClickHouse のサーバレス化
yuu26
6
740
生成AI時代におけるAI・機械学習技術を用いたプロダクト開発の深化と進化 #BetAIDay
layerx
PRO
1
1.1k
相互運用可能な学修歴クレデンシャルに向けた標準技術と国際動向
fujie
0
210
Claude Codeは仕様駆動の夢を見ない
gotalab555
23
5.6k
Featured
See All Featured
Speed Design
sergeychernyshev
32
1.1k
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
Building an army of robots
kneath
306
45k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
790
For a Future-Friendly Web
brad_frost
179
9.9k
Designing Experiences People Love
moore
142
24k
Adopting Sorbet at Scale
ufuk
77
9.5k
Testing 201, or: Great Expectations
jmmastey
45
7.6k
Embracing the Ebb and Flow
colly
86
4.8k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
60k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.3k
Transcript
#VJMEJOHUIFMBZFSFETFSWFSBQQMJDBUJPO BDIJFWFECZ*OWFSTJGZ+4 %FD +4$POG+1 !PLVOPLFOUBSP
+4$POG+1 ˙ ,FOԞݡଠ !PLVOPLFOUBSP ˙ $MJFOUTJEF4FSWFSTJEFEFWFMPQFS ˙ "OHVMBS+BQBO6TFS(SPVQ
+4$POG+1 "HFOEB ˙ .ZBQQMJDBUJPOBSDIJUFDUVSF ˙ 8IBUJTUJHIUDPVQMJOH 8IZEPXFOFFE%*1 ˙ %FWFMPQJOHXJUI
5ZQF4DSJQU &YQSFTT *OWFSTJGZ+4 ,OFYKT
8IBUUPEFWFMPQ
+4$POG+1 8IBUUPEFWFMPQ ˙ 5IFOFX4BB4UIBUDIBOHFTUIFXBZZPVMJTUFOUP NVTJD
+4$POG+1 )VNCMFQSPCMFNT ˙ *UTIPVMEIBWFCFFOSFMFBTFEOPX XIFO*BQQMJFEGPS$'1 ˙ %FWFMPQNFOUQFOEJOH ˙ 8JMMUBMLBCPVUEFWFMPQJOHBUFTUWFSTJPO
4ZTUFNBSDIJUFDUVSF
+4$POG+1 ˙ (PPHMF$MPVE1MBUGPSN ˙ $MPVE42- ˙ "QQ&OHJOF 4UBOEBSEFOWJSPONFOU XJUI/PEFKT
˙ $MPVE4UPSBHF
"QQMJDBUJPOBSDIJUFDUVSF
+4$POG+1 ˙ 5ZQF4DSJQU ˙ 4FSWFS&YQSFTT ˙ $MJFOU"OHVMBS
8IBUJTUJHIUDPVQMJOH
+4$POG+1 5JHIUDPVQMJOH ˙ %JGpDVMUTJUVBUJPOUPEFUFSNJOFXIJDIDPEFDIBOHFT XJMMBGGFDUXIFSF ˙ *OUSJDBUFMZJOUFSUXJOFE ˙ 4DIFNB FYUFSOBMTFSWJDFT
CVTJOFTTSVMFT TUSVDUVSFPG3&45"1* (6*FMFNFOUT
'PSFYBNQMF
+4$POG+1 ˙ $SFBUFEB3&45"1*XJUIBEBUBTUSVDUVSFTJNJMBSUP UFYUpFMETPOUIFTDSFFO ˙ 1FSTJTUFEUIF+40/BTJUJTJOUIFEBUBCBTF
+4$POG+1 ˙ 0VUCSFBLPGSFEFTJHO ˙ 5FYUpFMETXFSFTQMJUJOUPNVMUJQMFTFDUJPOT XIFOUIFDMJFOUBQQXBTSFEFTJHOFE ˙ "EEFETDSFFOUSBOTJUJPO
+4$POG+1 ˙ %BUBCBTFTDIFNBXBTTUSPOHMZEFQFOEFOU POUIFTDSFFOCFGPSFSFEFTJHO ˙ $POTJTUFODZIBTCFFOMPTU
+4$POG+1 8IZ Screen before redesigned Schema before redesigned Redesigned screen
Schema before redesigned
+4$POG+1 8IBUTIPVMEXFEP Redesigned screen Schema unaffected by a screen design
Abstract interface
+4$POG+1 -BZFSJOH
-BZFSFEBSDIJUFDUVSF
+4$POG+1 4PMJUBSZCBUUMF ˙ 8IFOTFSWFSBOEDMJFOUBSFJNQMFNFOUFEBMPOF XFDPVMEXSJUFDPEFTXJUIQFSGFDUGSFFEPN ˙ 5IBUJT
%JTUVSCFEBSFB
PS
+4$POG+1 Render and handle event Persist
+4$POG+1 Render and handle event Persist Client Server
+4$POG+1 Render and handle event Persist Usecases Abstract storages Mediator
Repository HTTP
+4$POG+1 Render and handle event Persist Usecases Abstract storages Mediator
Repository HTTP -BZFSFEDMJFOU -BZFSFETFSWFS
+4$POG+1 #SJOHPSEFS ˙ 3FHBSEMFTTPGUIFOVNCFSPGEFWFMPQFST BMXBZTCFBXBSFPGEJTDJQMJOFEDPEFEJWJTJPOT ˙ -PPLTMJLFBOPSHBOJ[FETIFMG ˙ "CMFUPEJWJEFMBCPS
4PNFEBZ
+4$POG+1 ˙ %%%%PNBJO%SJWFO%FTJHO ˙ 5PVHIUPUBLF%%%QFSGFDUMZ ˙ ,OPXUIFDPODFQUBOECPSSPXJU ˙ .%%.PEFM%SJWFO%FWFMPQNFOU ˙
3FQPTJUPSZ%BUBQFSTJTUFODFBCTUSBDUJPO
3FQPTJUPSZQBUUFSO
+4$POG+1 ˙ %BUBCBTFJTBMNPTUBMXBZTOPSNBMJ[FE ˙ .VMUJQMFUBCMFT ˙ .VMUJQMFSFBETBOEXSJUFT ˙ .BOZ+0*/ ˙
.BOZUSBOTBDUJPOT
+4$POG+1 $IBPTEVSJOHNJHSBUJPO ˙ *UTQBJOGVMUPpYUIFXIPMFBQQMJDBUJPO XJUIFBDI%#NJHSBUJPOT ˙ 7JPMBUFT0JO40-*%QSJODJQMFT ˙ 0$1&OUJUJFTTIPVMECFPQFOGPSFYUFOTJPO
CVUDMPTFEGPSNPEJpDBUJPO
+4$POG+1 3FQPTJUPSZ ˙ %BUBCBTFBCTUSBDUJPO ˙ %FDPVQMFTEBUBCBTFNBQQJOHGSPN UIFEPNBJONPEFMJUTFMG ˙ 4USFOHUIFOTQFDJpDBUJPODIBOHFT
+4$POG+1 %#DPOOFDUJPO ˙ .BOZDSFEFOUJBMTBSFUSFBUFEBTFOWJSPONFOU WBSJBCMFT ˙ %BUBCBTFOBNFT VTFST QBTTXPSET ˙
.PTUPGUIFNNBZCFTQFDJpFEJOEJWJEVBMMZ GPSQSPEVDUBOEEFWFMPQNFOU
+4$POG+1 %JGpDVMUUPUFTU ˙ *GZPVDPOOFDUUP%#GPSQSPEVDUJPO FWFSZUJNFZPVUFTU ZPVDBOUUFTUPGqJOF ˙ 8IFOQSFQBSJOHBpYUVSF%#GPSUFTUJOH ZPVDBOUEPJUFWFOJGZPVXBOUUPTQMJUJU
)PX
%FQFOEFODZ*OWFSTJPO1SJODJQMF
+4$POG+1 ˙ %*1 ˙ %JO40-*%QSJODJQMFT
+4$POG+1 ˙ )JHIMFWFMNPEVMFTTIPVMEOPUEFQFOEPOMPXMFWFM NPEVMFT ˙ #PUITIPVMEEFQFOEPOBCTUSBDUJPOT ˙ "CTUSBDUJPOTTIPVMEOPUEFQFOEPOEFUBJMT ˙ %FUBJMTTIPVMEEFQFOEPOBCTUSBDUJPOT
3JHIU
.PSFGBNJMJBSFYBNQMFT☝
class UserId { readonly value: string; constructor() { this.value =
uuid(); } } /PUHPPE
function makeUserId(): UserId { return new UserId(uuid()); } function makeUserIdMock(mockValue:
string): UserId { return new UserId(mockValue); } class UserId { constructor(readonly value: string) {} } #FUUFS
class UsersRepository { private readonly db: Knex; constructor() { this.db
= knex(config); } } /PUHPPE
class UsersRepository { constructor( private readonly db: DatabaseProvider ) {}
} #FUUFS
class UsersGetMediator { async handle(req: Request, res: Response) { const
repo = new UsersRepository( new DatabaseProvider(), ); const users = await repo.getAll(); // Processing to send response } } )NNN
class Application { private router: Router; constructor() { this.router =
new Router( new UsersGetMediator( new UsersRepository( new DatabaseProvider(), ) ) ) } } :PVLOPX
class Application { private router: Router; constructor() { this.router =
new Router( new UsersGetMediator( new UsersRepository( new DatabaseProvider(), ) ) ) } } )!%0,&/
*TUIJTPLBZ
-FUTVTF%*DPOUBJOFS
import { injectable } from 'inversify'; @injectable() export class Application
{ constructor( private readonly auth: AuthService, private readonly router: Router, private readonly express: ExpressProvider, ) {} main() { this.auth.prepare(); this.router.prepare(); this.express.listen(); } } *OKFDUBCMFEFDPSBUPS
@injectable() export class UsersGetMediator { constructor( private readonly auth: AuthService,
private readonly permissionVerifier: PermissionVerifier, private readonly errorHandler: ErrorHandler, private readonly usersRepo: UsersRepository, ) {} async handle(req: Request, res: Response) { if (!(await this.auth.isAuthenticated(req))) { return this.errorHandler.unauthorized(res); } if (!(await this.permissionVerifier.canReadUsers(req.user.id))) { return this.errorHandler.forbidden(res); } const users = await this.usersRepo.getAll(); const body: UsersGetResponse = { users: users.serialize(), }; res.send(body).end(); } }
+4$POG+1 *OWFSTJGZ+4 ˙ "CMFUPIBOEMF"constructor injection" ˙ *OUFSGBDFTJNJMBSUP"OHVMBS ˙ IUUQTHJUIVCDPNJOWFSTJGZ*OWFSTJGZ+4
I was going to introduce the trick here...
But I have found it...
+4$POG+1 54ZSJOHF ˙ .BEFCZ.JDSPTPGU ˙ *OUFSGBDFTJNJMBSUP*OWFSTJGZ+4 *OPUIFSXPSET TJNJMBSUP"OHVMBS ˙ /POFFEGPSNZUSJDLTGPS*OWFSTJGZ+4
˙ IUUQTHJUIVCDPNNJDSPTPGUUTZSJOHF
%FWFMPQJOHXJUI 5ZQF4DSJQU &YQSFTT *OWFSTJGZ+4 ,OFYKT
+4$POG+1 Express Http Handler (Router) Google Cloud SQL Mediator Repository
Database Provider Reader Writer
+4$POG+1 Express Http Handler (Router) Google Cloud SQL Mediator Repository
Database Provider Reader Writer Http Request (Not TS) Domain model Data access object Knex.js ORM Raw SQL Query (Not TS)
+4$POG+1 Express Http Handler (Router) Google Cloud SQL Mediator Repository
Database Provider Reader Writer Serialized JSON (Not TS) Domain model Data transfer object Results as JSON (Not TS)
+4$POG+1 ˙ *OUSPEVDF"value object"CZ%%% ˙ "WPJEVTJOHQSJNJUJWFUZQFTBTNVDIBTQPTTJCMF MJLFstring number ˙ 'PSFYBNQMF
UserId UserName AccessToken Email
+4$POG+1 ˙ /PUVTFBWBMJEBUPSGVODUJPOBOEBOifTUBUFNFOU ˙ 7FSJGZCZUISPXJOHBOFYDFQUJPOCZUIFDPOTUSVDUPS ˙ *GJOTUBOUJBUJPOJTTVDDFTTGVM BMXBZTWBMJEBUFEBOEDPNQJMFTBGF
+4$POG+1 8IZEPOU*VTF/FTU+4 ˙ IUUQTOFTUKTDPN ˙ /FTU+4IBTEFQFOEFODZJOKFDUJPO ˙ *QSFGFS"OHVMBSCVU*MJLFUPDPNCJOF UIFNJOJNVNSFRVJSFEGFBUVSFTPOUIFTFSWFSTJEF ˙
5BTUFTEJGGFS
-FUTTUBZPSHBOJ[FE XJUI%*$POUBJOFS
5IBOLZPV