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PlantUMLの隠れた機能:plantuml-stdlibを使いこなそう

Last updated at Posted at 2023-08-13

PlantUMLとは

ダイアグラムを素早く作成するためのコンポーネントです。

plantuml-stdlibとは

公式リリースに含まれているライブラリです。
PlantUML単独では表現的に物足りない場合でも、plantuml-stdlibを利用することで表現の幅を広げることができます。

plantuml-stdlibの構文

以下のURLを参考に、そこからの相対パスで記載します

どんなものができますか?

C4

C4は、システムコンテキスト図、コンテナ図 、コンポーネント図、 コード図の4階層でソフトウェア アーキテクチャを視覚化するためのモデルです。

!include <C4/C4_Context>

title System Context diagram for Internet Banking System

Person(customer, "Banking Customer", "A customer of the bank, with personal bank accounts.")
System(banking_system, "Internet Banking System", "Allows customers to check their accounts.")

System_Ext(mail_system, "E-mail system", "The internal Microsoft Exchange e-mail system.")
System_Ext(mainframe, "Mainframe Banking System", "Stores all of the core banking information.")

Rel(customer, banking_system, "Uses")
Rel_Back(customer, mail_system, "Sends e-mails to")
Rel_Neighbor(banking_system, mail_system, "Sends e-mails", "SMTP")
Rel(banking_system, mainframe, "Uses")

AWS

AWSのアイコンを描画することもできます。

!include <aws/common>
!include <aws/Messaging/AmazonSES/AmazonSES>
!include <aws/Storage/AmazonS3/AmazonS3>
!include <aws/Storage/AmazonS3/bucket/bucket>

AMAZONS3(s3_internal)
AMAZONS3(s3_partner,"Vendor's S3")
s3_internal <- s3_partner
!include <awslib/AWSCommon>
!include <awslib/InternetOfThings/IoTRule>
!include <awslib/Analytics/KinesisDataStreams>
!include <awslib/ApplicationIntegration/SimpleQueueService>

left to right direction

agent "Published Event" as event

IoTRule(iotRule, "Action Error Rule", "error if Kinesis fails")
KinesisDataStreams(eventStream, "IoT Events", "2 shards")
SimpleQueueService(errorQueue, "Rule Error Queue", "failed Rule actions")

event --> iotRule : JSON message
iotRule --> eventStream : messages
iotRule --> errorQueue : Failed action message

C4とAWSを合体させてみた

C4のようにspriteを指定できる場合、AWSやその他別ライブラリであっても、spriteを埋め込むことができます

!include <C4/C4_Context>

title System Context diagram for Internet Banking System

Person(customer, "Banking Customer", "A customer of the bank, with personal bank accounts.")
System(banking_system, "Internet Banking System", "Allows customers to check their accounts.",$sprite="EC2")

System_Ext(mail_system, "E-mail system", "The internal Microsoft Exchange e-mail system.",$sprite="SimpleEmailService")
System_Ext(mainframe, "Mainframe Banking System", "Stores all of the core banking information.")

Rel(customer, banking_system, "Uses")
Rel_Back(customer, mail_system, "          Sends e-mails to", $sprite="SimpleEmailServiceEmail")
Rel_Neighbor(banking_system, mail_system, "Sends e-mails", "SMTP")
Rel(banking_system, mainframe, "Uses")

!include <awslib/AWSCommon>
!include <awslib/Compute/EC2>
!include <awslib/BusinessApplications/SimpleEmailService>
!include <awslib/BusinessApplications/SimpleEmailServiceEmail>

構文のドキュメントはどこで参照できますか?

plantuml-stdlibリポジトリで参照できます。

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