level_3_component.puml

@startuml
' configures the library
!global $INCLUSION_MODE="local"
!global $LIB_BASE_LOCATION=".."

' loads the library's bootstrap
!include $LIB_BASE_LOCATION/bootstrap.puml

' loads the package bootstrap
include('c4model/bootstrap')


C4Legend()
Title("Component diagram for Internet Banking System - API Application")

include('c4model/Element/Database')
include('c4model/Element/ExternalSystem')
include('c4model/Element/Component')
include('c4model/Element/Container')
include('c4model/Boundary/ContainerBoundary')

Container("spa", "Single-Page Application", "Provides all of the Internet banking functionality to customers via their browser.", "JavaScript and Angular")
Container("ma", "Mobile App", "Provides limited subset of the Internet banking functionality to customers via their mobile device.", "Xamarin")
ContainerBoundary("api", "API Application") {
    Component("ctrl_signin", "Sign In Controller", "Allows users to sign in to the Internet Banking System.", "Spring MVC Rest Controller")
    Component("ctrl_password", "Reset Password Controller", "Allows users to reset their passwords with a single use URL.", "Spring MVC Rest Controller")
    Component("ctrl_accounts", "Accounts Summary Controller", "Provides customers with a summary of their bank accounts.", "Spring MVC Rest Controller")

    Component("bean_secu", "Security Component", "Provides functionality related to sing in, changing passwords, etc.", "Spring Bean")
    Component("bean_email", "E-mail Component", "Sends e-mail to users.", "Spring Bean")
    Component("bean_facade", "Mainframe Banking System Facade", "A facade onto the mainframe banking system.", "Spring Bean")

}
Database("db", "Database", "Stores user registration information, hashed authentication credentials, access log, etc.", "Oracle Database Schema")
ExternalSystem("mbs", "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.")
ExternalSystem("ems", "E-Mail System", "The internal Microsoft Exchange e-email system.")

spa --> ctrl_signin : C4Relationship("Maks API calls to", "JSON/HTTPS")
spa --> ctrl_password : C4Relationship("Maks API calls to", "JSON/HTTPS")
spa --> ctrl_accounts : C4Relationship("Maks API calls to", "JSON/HTTPS")

ma --> ctrl_signin : C4Relationship("Maks API calls to", "JSON/HTTPS")
ma --> ctrl_password : C4Relationship("Maks API calls to", "JSON/HTTPS")
ma --> ctrl_accounts : C4Relationship("Maks API calls to", "JSON/HTTPS")

ctrl_signin --> bean_secu : C4Relationship("Uses")

ctrl_password --> bean_secu : C4Relationship("Uses")
ctrl_password --> bean_email : C4Relationship("Uses")

ctrl_accounts --> bean_facade : C4Relationship("Uses")

bean_secu --> db : C4Relationship("Reads from and writes to", "JDBC")
bean_email --> ems : C4Relationship("Sends e-mail using", "SMTP")
bean_facade --> mbs : C4Relationship("Uses", "XML/HTTPS")

@enduml