github.com/geniusesgroup/libgo@v0.0.0-20220713101832-828057a9d3d4/protocol/application.go (about)

     1  /* For license and copyright information please see LEGAL file in repository */
     2  
     3  package protocol
     4  
     5  // Application immutable runtime settings
     6  const (
     7  	// AppLanguage store global language to use by any locale text selector.
     8  	AppLanguage = LanguageEnglish
     9  
    10  	// AppMode_Dev use to indicate that app can do some more logic e.g.
    11  	// - Save more logs
    12  	// - Add more services like net/http/pprof for better debugging
    13  	// - Add more pages that just need only for developers
    14  	AppMode_Dev = true
    15  )
    16  
    17  // App is default global protocol.Application like window global variable in browsers.
    18  // You must assign to it by any object implement protocol.Application on your main.go file. Suggestion:
    19  // - Server App	>> protocol.App = &achaemenid.App
    20  // - GUI App	>> protocol.App = &gui.Application
    21  var App Application
    22  
    23  // Application is the interface that must implement by any Application.
    24  type Application interface {
    25  	Engine() ApplicationEngine
    26  
    27  	SoftwareStatus() SoftwareStatus
    28  	Status() ApplicationState
    29  	// Listen to the app state changes. Can return the channel instead of get as arg, but a channel listener can lost very fast app state changing.
    30  	// This is because when the first goroutine blocks the channel all other goroutines must wait in line. When the channel is unblocked,
    31  	// the state has already been received and removed from the channel so the next goroutine in line gets the next state value.
    32  	NotifyState(notifyBy chan ApplicationState)
    33  	Shutdown()
    34  
    35  	Cluster
    36  	StoragesLocal
    37  	StoragesCache
    38  	Logger
    39  	Services
    40  	Errors
    41  	Connections
    42  	NetworkApplicationMultiplexer
    43  	EventTarget
    44  
    45  	// Server specific applications
    46  	StoragesDistributed
    47  
    48  	GUIApplication
    49  }
    50  
    51  // ApplicationEngine is the interface that return some useful data about the engine that implement Application protocol
    52  // In many ways it is like window.navigator in web ecosystem
    53  type ApplicationEngine interface {
    54  	Name() string
    55  	CharacterSet() string
    56  }
    57  
    58  // ApplicationManifest is the interface that must implement by any Application.
    59  type ApplicationManifest interface {
    60  	Icon() []byte
    61  	DomainName() string
    62  	Email() string
    63  
    64  	UserUUID() (userUUID [32]byte)
    65  	UserID() (userID uint32)
    66  	AppUUID() (appUUID [32]byte)
    67  	AppID() (appID uint16) // local OS application ID
    68  
    69  	ContentPreferences()
    70  	PresentationPreferences()
    71  }
    72  
    73  // ApplicationState indicate application state
    74  // Force to use 32 bit length due to it is minimum atomic helper functions size.
    75  type ApplicationState uint32
    76  
    77  // Application State
    78  const (
    79  	ApplicationState_Unset    ApplicationState = iota // State not set yet!
    80  	ApplicationState_Starting                         // plan to start
    81  	ApplicationState_Running
    82  	ApplicationState_Stopping
    83  	ApplicationState_Stopped
    84  
    85  	ApplicationState_PowerFailure
    86  
    87  	ApplicationState_Stable
    88  	ApplicationState_NotResponse
    89  
    90  	ApplicationState_Splitting
    91  	ApplicationState_ReAllocate
    92  	// ApplicationState_AcceptWrite
    93  )