fnext

Documentation

Index

• Variables
• func NewDatastore(ds models.Datastore, al AppListener, fl FnListener, tl TriggerListener) models.Datastore
• type APIHandler
• type APIHandlerFunc
  • func (f APIHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request)
• type AppListener
• type CallListener
• type ExtServer
• type Extension
• type FnListener
• type Middleware
• type MiddlewareFunc
  • func (m MiddlewareFunc) Handle(next http.Handler) http.Handler
• type TriggerListener

Variables

var (
	// MiddlewareControllerKey is a context key. It can be used in handlers with context.WithValue to
	// access the MiddlewareContext.
	MiddlewareControllerKey = contextKey("middleware_controller")
)

Keys for extensions to get things out of the context

Functions

func NewDatastore

func NewDatastore(ds models.Datastore, al AppListener, fl FnListener, tl TriggerListener) models.Datastore

NewDatastore returns a Datastore that wraps the provided Datastore, calling any relevant listeners around any of the Datastore methods.

Types

type APIHandler

type APIHandler interface {
	ServeHTTP(w http.ResponseWriter, r *http.Request)
}

APIHandler may be used to add an http endpoint on the versioned route of the Fn API.

type APIHandlerFunc

type APIHandlerFunc func(w http.ResponseWriter, r *http.Request)

APIHandlerFunc is a convenience to make an APIHandler.

func (APIHandlerFunc) ServeHTTP

func (f APIHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request)

ServeHTTP calls f(w, r).

type AppListener

type AppListener interface {
	// BeforeAppCreate called right before creating App in the database
	BeforeAppCreate(ctx context.Context, app *models.App) error
	// AfterAppCreate called after creating App in the database
	AfterAppCreate(ctx context.Context, app *models.App) error
	// BeforeAppUpdate called right before updating App in the database
	BeforeAppUpdate(ctx context.Context, app *models.App) error
	// AfterAppUpdate called after updating App in the database
	AfterAppUpdate(ctx context.Context, app *models.App) error
	// BeforeAppDelete called right before deleting App in the database
	BeforeAppDelete(ctx context.Context, app *models.App) error
	// AfterAppDelete called after deleting App in the database
	AfterAppDelete(ctx context.Context, app *models.App) error
	// BeforeAppGet called right before getting an app
	BeforeAppGet(ctx context.Context, appID string) error
	// AfterAppGet called after getting app from database
	AfterAppGet(ctx context.Context, app *models.App) error
	// BeforeAppsList called right before getting a list of all user's apps. Modify the filter to adjust what gets returned.
	BeforeAppsList(ctx context.Context, filter *models.AppFilter) error
	// AfterAppsList called after deleting getting a list of user's apps. apps is the result after applying AppFilter.
	AfterAppsList(ctx context.Context, apps []*models.App) error
}

AppListener is an interface used to inject custom code at key points in the app lifecycle.

type CallListener

type CallListener interface {
	// BeforeCall called before a function is executed
	BeforeCall(ctx context.Context, call *models.Call) error
	// AfterCall called after a function completes
	AfterCall(ctx context.Context, call *models.Call) error
}

CallListener enables callbacks around Call events.

type ExtServer

type ExtServer interface {
	// AddAppListener adds a listener that will be invoked around any relevant methods.
	AddAppListener(listener AppListener)
	// AddCallListener adds a listener that will be invoked around any call invocations.
	AddCallListener(listener CallListener)

	// AddAPIMiddleware add middleware
	AddAPIMiddleware(m Middleware)
	// AddAPIMiddlewareFunc add middlewarefunc
	AddAPIMiddlewareFunc(m MiddlewareFunc)
	// AddRootMiddleware add middleware add middleware for end user applications
	AddRootMiddleware(m Middleware)
	// AddRootMiddlewareFunc add middleware for end user applications
	AddRootMiddlewareFunc(m MiddlewareFunc)

	// AddEndpoint adds an endpoint to /v2/x
	AddEndpoint(method, path string, handler APIHandler)
	// AddEndpoint adds an endpoint to /v2/x
	AddEndpointFunc(method, path string, handler func(w http.ResponseWriter, r *http.Request))

	// Datastore returns the Datastore Fn is using
	Datastore() models.Datastore
}

ExtServer limits what the extension should do and prevents dependency loop, it can be used to alter / modify / add the behavior of fn server.

type Extension

type Extension interface {
	Name() string
	Setup(s ExtServer) error
}

Extension is the interface that all extensions must implement in order to configure themselves against an ExtServer.

type FnListener

type FnListener interface {
	// BeforeFnCreate called before fn created in the datastore
	BeforeFnCreate(ctx context.Context, fn *models.Fn) error
	// AfterFnCreate called after fn create in the datastore
	AfterFnCreate(ctx context.Context, fn *models.Fn) error
	// BeforeFnUpdate called before fn update in datastore
	BeforeFnUpdate(ctx context.Context, fn *models.Fn) error
	// AfterFnUpdate called after fn updated in datastore
	AfterFnUpdate(ctx context.Context, fn *models.Fn) error
	// BeforeFnDelete called before fn deleted from the datastore
	BeforeFnDelete(ctx context.Context, fnID string) error
	// AfterFnDelete called after fn deleted from the datastore
	AfterFnDelete(ctx context.Context, fnID string) error
}

FnListener enables callbacks around Fn events

type Middleware

type Middleware interface {
	Handle(next http.Handler) http.Handler
}

Middleware just takes a http.Handler and returns one. So the next middle ware must be called within the returned handler or it would be ignored.

type MiddlewareFunc

type MiddlewareFunc func(next http.Handler) http.Handler

MiddlewareFunc is a here to allow a plain function to be a middleware.

func (MiddlewareFunc) Handle

func (m MiddlewareFunc) Handle(next http.Handler) http.Handler

Handle used to allow middlewarefuncs to be middleware.

type TriggerListener

type TriggerListener interface {
	// BeforeTriggerCreate called before trigger created in the datastore
	BeforeTriggerCreate(ctx context.Context, trigger *models.Trigger) error
	// AfterTriggerCreate called after trigger create in the datastore
	AfterTriggerCreate(ctx context.Context, trigger *models.Trigger) error
	// BeforeTriggerUpdate called before trigger update in datastore
	BeforeTriggerUpdate(ctx context.Context, trigger *models.Trigger) error
	// AfterTriggerUpdate called after trigger updated in datastore
	AfterTriggerUpdate(ctx context.Context, trigger *models.Trigger) error
	// BeforeTriggerDelete called before trigger deleted from the datastore
	BeforeTriggerDelete(ctx context.Context, triggerId string) error
	// AfterTriggerDelete called after trigger deleted from the datastore
	AfterTriggerDelete(ctx context.Context, triggerId string) error
}

TriggerListener enables callbacks around Trigger events