pool

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 Go to latest Published: Feb 23, 2022 License: AGPL-3.0 Imports: 11 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func CheckActivity 

func CheckActivity(a *Activity) error

CheckActivity throws an error if any essential elements are missing from an Activity

func ConfigToModel 

func ConfigToModel(config Config) *models.Config

ConfigToModel returns a pointer to a Config represented in the API's model

func CopyStore 

func CopyStore(from, to *Store)

CopyStore copys pools, groups, secret, booking token duration and now function from one Store to another

func MakeClaims 

func MakeClaims(mp *models.Permission) permission.Token

MakeClaims creates claims from the API's model.Permission

func NewStreamsFromModel 

func NewStreamsFromModel(modelStreams []*models.Stream) map[string]*Stream

NewStreamsFromModel returns a map of streams from the API's model representation

func SingleStreamToModel 

func SingleStreamToModel(s *Stream) *models.Stream

SingleStreamToModel returns a pointer to a Stream represented in the API's model

func SingleUIToModel 

func SingleUIToModel(u *UI) *models.UserInterface

SingleUIToModel returns a pointer to a UI represented in the API's model

func StreamsToModel 

func StreamsToModel(streams map[string]*Stream) []*models.Stream

StreamsToModel returns an array of pointers to Streams represented in the API's model

func UIsToModel 

func UIsToModel(uis []*UI) []*models.UserInterface

UIsToModel returns an array of pointers to UI represented in the API's model

Types

type Activity 

type Activity struct {
	*sync.RWMutex `json:"-"`
	Config        Config `json:"config"`
	Description   `json:"description"`
	ExpiresAt     int64              `json:"exp"`
	Streams       map[string]*Stream `json:"streams"`
	UI            []*UI              `json:"ui"`
}

Activity represents an individual activity that can be booked

func NewActivity 

func NewActivity(name string, expires int64) *Activity

NewActivity returns a pointer to an activity that is populated with a name and expiry datetime.

func NewActivityFromModel 

func NewActivityFromModel(ma *models.Activity) *Activity

NewActivityFromModel creates a new Activity from the API's model representation

func (*Activity) AddID 

func (a *Activity) AddID() string

AddID sets the ID of the activity to a randomly generated UUID

func (*Activity) AddStream 

func (a *Activity) AddStream(key string, stream *Stream)

AddStream adds a stream to the Activity

func (*Activity) AddUI 

func (a *Activity) AddUI(ui *UI)

AddUI adds a UI to the activity

func (*Activity) ConvertToModel 

func (a *Activity) ConvertToModel() *models.Activity

ConvertToModel returns a pointer to an Activity represented in the API's model

func (*Activity) GetID 

func (a *Activity) GetID() string

GetID returns the ID string of the Activity

func (*Activity) SetID 

func (a *Activity) SetID(id string)

SetID sets the ID of the Activity

func (*Activity) WithID 

func (a *Activity) WithID(id string) *Activity

WithID adds an ID to the Activity

func (*Activity) WithNewRandomID 

func (a *Activity) WithNewRandomID() *Activity

WithNewRandomID adds a new random ID to the activity

type Config 

type Config struct {
	URL string `json:"url"`
}

Config represents a UI configuration file URL

func NewConfigFromModel 

func NewConfigFromModel(mc *models.Config) *Config

NewConfigFromModel returns a pointer to a Config converted from the API's model

type Description 

type Description struct {
	ID   string `json:"id"`
	Name string `json:"name"`
	Type string `json:"type"`
	DisplayInfo
}

Description represents an Activity Description

func NewDescription 

func NewDescription(name string) *Description

NewDescription returns a pointer to a Description with given name and randomly generated UUID as ID

func NewDescriptionFromModel 

func NewDescriptionFromModel(md *models.Description) *Description

NewDescriptionFromModel returns a pointer to a Description converted from the API's model

func (*Description) ConvertToModel 

func (d *Description) ConvertToModel() *models.Description

ConvertToModel returns a pointer to the Description represented in the API's model

func (*Description) SetFurther 

func (d *Description) SetFurther(item string)

SetFurther sets the URL for further information (in string format)

func (*Description) SetID 

func (d *Description) SetID(item string)

SetID sets the ID of the Description

func (*Description) SetImage 

func (d *Description) SetImage(item string)

SetImage sets the URL of the large/main image of the activity

func (*Description) SetLong 

func (d *Description) SetLong(item string)

SetLong sets the long description field in the Description

func (*Description) SetShort 

func (d *Description) SetShort(item string)

SetShort sets the short description field in the Descriptiom

func (*Description) SetThumb 

func (d *Description) SetThumb(item string)

SetThumb sets the URL of the thumbnail image of the activity

func (*Description) SetType 

func (d *Description) SetType(item string)

SetType sets the Type field in the Description

func (*Description) WithID 

func (d *Description) WithID(id string) *Description

WithID sets the ID of the Description

type DisplayInfo 

type DisplayInfo struct {
	Short   string `json:"short,omitempty"`
	Long    string `json:"long,omitempty"`
	Further string `json:"further,omitempty"`
	Thumb   string `json:"thumb,omitempty"`
	Image   string `json:"image,omitempty"`
}

DisplayInfo represents information about an Activity that is displayed to users

type Group 

type Group struct {
	*sync.RWMutex `json:"-" yaml:"-"`
	Description   `json:"description"`
	Pools         []*Pool `json:"pools"`
}

Group represents a group of Pools

func NewGroup 

func NewGroup(name string) *Group

NewGroup returns a pointer to a new Group with a name, and randomly generated ID

func NewGroupFromModel 

func NewGroupFromModel(mg *models.Group) (*Group, error)

NewGroupFromModel returns a pointer to Group created from the API's model

func (*Group) AddPool 

func (g *Group) AddPool(pool *Pool)

AddPool adds the pool to the existing list of pools, all existing pools are retained

func (*Group) AddPools 

func (g *Group) AddPools(pools []*Pool)

AddPools adds more than one pool to the Group, retaining existing pools

func (*Group) DeletePool 

func (g *Group) DeletePool(pool *Pool)

DeletePool removes a single pool from the Group, if it was present

func (*Group) GetID 

func (g *Group) GetID() string

GetID returns the ID of the Group

func (*Group) GetPoolIDs 

func (g *Group) GetPoolIDs() []string

GetPoolIDs returns an array of all Pool IDs in the Group

func (*Group) GetPools 

func (g *Group) GetPools() []*Pool

GetPools returns the current list of pools in the Group

func (*Group) SetNewRandomID 

func (g *Group) SetNewRandomID() *Group

SetNewRandomID sets a random UUID as the Group ID

func (*Group) SetPools 

func (g *Group) SetPools(pools []*Pool)

SetPools replaces all pools in the group with the given array of pools

func (*Group) WithID 

func (g *Group) WithID(id string) *Group

WithID sets the ID of the Group

func (*Group) WithPool 

func (g *Group) WithPool(pool *Pool) *Group

WithPool adds a pool to a Group

func (*Group) WithPools 

func (g *Group) WithPools(pools []*Pool) *Group

WithPools replaces all pools in the Group with the given array of pools

type Pool 

type Pool struct {
	*sync.RWMutex `json:"-" yaml:"-"`
	Description   `json:"description"`
	Activities    map[string]*Activity `json:"activities"`
	Available     map[string]int64     `json:"available"`
	InUse         map[string]int64     `json:"inUse"`
	MinSession    uint64               `json:"minSession"`
	MaxSession    uint64               `json:"maxSession"`
	Now           func() int64         `json:"-" yaml:"-"`
}

Pool represents the booking status of the activities in a pool Note that each pool can have a different minSession / MaxSession duration but that users are limited to fixed maximum number of sessions they can book across the system to prevent users with access with more pools booking even more experiments simultaneously.

func NewPool 

func NewPool(name string) *Pool

NewPool returns a pointer to a newly initialised, empty Pool with the given name

func (*Pool) ActivityExists 

func (p *Pool) ActivityExists(id string) bool

ActivityExists checks whether an activity of the given ID exists in the pool (returns true if exists)

func (*Pool) ActivityInUse 

func (p *Pool) ActivityInUse(id string) bool

ActivityInUse checks whether an activity with the given ID is currently in use (returns true if in use)

func (*Pool) ActivityNextAvailableTime 

func (p *Pool) ActivityNextAvailableTime(id string) (int64, error)

ActivityNextAvailableTime returns the time that the activity of the given ID will be next available

func (*Pool) ActivityRequest 

func (p *Pool) ActivityRequest(duration uint64, id string) error

ActivityRequest marks activity with given ID as being 'in use' until the time requested, but throws an error if the ID does not exist or is in-use already

func (*Pool) ActivityRequestAny 

func (p *Pool) ActivityRequestAny(duration uint64) (string, error)

ActivityRequestAny returns the ID of a free activity that is available for the requested duration, and marks the activity as 'in use' until the time requested or throws an error if no free activities.

func (*Pool) ActivityWaitAny 

func (p *Pool) ActivityWaitAny() (uint64, error)

ActivityWaitAny returns the wait time for an activity to come free that can be booked for one second or more.

func (*Pool) ActivityWaitDuration 

func (p *Pool) ActivityWaitDuration(duration uint64) (uint64, error)

ActivityWaitDuration returns the wait time for an activity to come free that can be booked for the specified ActivityWaitDuration this covers the case when an activity might come free, but have only a short time left before it expires from the manifest

func (*Pool) AddActivity 

func (p *Pool) AddActivity(activity *Activity) error

AddActivity adds a single Activity to a pool

func (*Pool) CountAvailable 

func (p *Pool) CountAvailable() int

CountAvailable returns the number of activities available to book in the pool now

func (*Pool) CountInUse 

func (p *Pool) CountInUse() int

CountInUse returns the number of activities in use now

func (*Pool) DeleteActivity 

func (p *Pool) DeleteActivity(activity *Activity)

DeleteActivity removes a single Activity from the Pool

func (*Pool) GetActivityByID 

func (p *Pool) GetActivityByID(id string) (*Activity, error)

GetActivityByID returns a pointer to the Activity of the given ID

func (*Pool) GetActivityIDs 

func (p *Pool) GetActivityIDs() []string

GetActivityIDs returns an array containing the IDs of all activities in the Pool

func (*Pool) GetID 

func (p *Pool) GetID() string

GetID returns the ID of the Pool

func (*Pool) GetMaxSession 

func (p *Pool) GetMaxSession() uint64

GetMaxSession returns the maximum bookable session duration in seconds

func (*Pool) GetMinSession 

func (p *Pool) GetMinSession() uint64

GetMinSession returns the minimum bookable session duration in seconds

func (*Pool) RemoveStaleEntries 

func (p *Pool) RemoveStaleEntries()

RemoveStaleEntries tidies up any entries in the InUse list that have since expired

func (*Pool) SetMaxSesssion 

func (p *Pool) SetMaxSesssion(duration uint64)

SetMaxSesssion sets the maximum session duration that can be booked by a user usually intended to match the maximum sustained session expected of a user and not set so long that a user can tie up equipment unduly (there is no cancel at the present time)

func (*Pool) SetMinSesssion 

func (p *Pool) SetMinSesssion(duration uint64)

SetMinSesssion sets the minimum session duration that can be booked the minimum bookable duration is usually set by the checking routines run by the system

func (*Pool) WithDescription 

func (p *Pool) WithDescription(d Description) *Pool

WithDescription adds a description to the Pool

func (*Pool) WithID 

func (p *Pool) WithID(id string) *Pool

WithID sets the ID for the Pool

func (*Pool) WithMaxSesssion 

func (p *Pool) WithMaxSesssion(duration uint64) *Pool

WithMaxSesssion sets the maximum session duration that can be booked by a user usually intended to match the maximum sustained session expected of a user and not set so long that a user can tie up equipment unduly (there is no cancel at the present time)

func (*Pool) WithMinSesssion 

func (p *Pool) WithMinSesssion(duration uint64) *Pool

WithMinSesssion sets the minimum session duration that can be booked the minimum bookable duration is usually set by the checking routines run by the system

func (*Pool) WithNow 

func (p *Pool) WithNow(now func() int64) *Pool

WithNow sets the function which reports the current time (useful in testing)

type Store 

type Store struct {
	*sync.RWMutex `json:"-" yaml:"-"`

	// Groups represent non-exclusive combinations of pools
	Groups map[string]*Group `json:"groups"`

	// Pools maps all pools in the store
	Pools map[string]*Pool `json:"pools"`

	// Secret for generating tokens - assume one PoolStore per relay
	Secret []byte `json:"secret"`

	// How long to grant booking tokens for
	BookingTokenDuration int64 `json:"bookingTokenDuration"`

	// Now is a function for getting the time - useful for mocking in test
	Now func() int64 `json:"-" yaml:"-"`
}

Store represents Activities stored according to Pool and Group

func ImportAll 

func ImportAll(b []byte) (*Store, error)

ImportAll imports a Store from a serialised JSON representation in []byte format It creates all necessary mutexes so the store can operate properly after the import

func NewStore 

func NewStore() *Store

NewStore creates a new Store with default settings

func (*Store) AddGroup 

func (p *Store) AddGroup(group *Group)

AddGroup adds a group to the Store

func (*Store) AddPool 

func (p *Store) AddPool(pool *Pool)

AddPool adds a pool to the Store (but does not associate it with a group)

func (*Store) DeleteGroup 

func (p *Store) DeleteGroup(group *Group)

DeleteGroup removes a group from the store

func (*Store) DeletePool 

func (p *Store) DeletePool(pool *Pool)

DeletePool removes a pool from the store

func (*Store) ExportAll 

func (p *Store) ExportAll() ([]byte, error)

ExportAll marshalls the Store to JSON and returns the []byte representation note that elements such as mutexes cannot be serialised and are omitted

func (*Store) GetAllGroupsCount 

func (p *Store) GetAllGroupsCount() int

GetAllGroupsCount returns a count of how many groups there are in the store

func (*Store) GetAllPoolCount 

func (p *Store) GetAllPoolCount() int

GetAllPoolCount returns a count of how many pools are in the store

func (*Store) GetAllPoolIDs 

func (p *Store) GetAllPoolIDs() []string

GetAllPoolIDs returns an array containing all the IDs of pools in the store

func (*Store) GetAllPools 

func (p *Store) GetAllPools() []*Pool

GetAllPools returns all pools in the Store

func (*Store) GetAvailableActivitiesCount 

func (p *Store) GetAvailableActivitiesCount() int

GetAvailableActivitiesCount returns a count of how many activities are available

func (*Store) GetGroupByID 

func (p *Store) GetGroupByID(id string) (*Group, error)

GetGroupByID returns a pointer to the Group with the given ID, or an error

func (*Store) GetGroupsByName 

func (p *Store) GetGroupsByName(name string) ([]*Group, error)

GetGroupsByName returns all groups with the given name

func (*Store) GetGroupsByNamePrefix 

func (p *Store) GetGroupsByNamePrefix(prefix string) ([]*Group, error)

GetGroupsByNamePrefix returns groups with a given string at the start of their name, or an error

func (*Store) GetPoolByID 

func (p *Store) GetPoolByID(id string) (*Pool, error)

GetPoolByID returns a pointer to a Pool with the given ID, or an error

func (*Store) GetPoolsByName 

func (p *Store) GetPoolsByName(name string) ([]*Pool, error)

GetPoolsByName returns all pools with a given name

func (*Store) GetPoolsByNamePrefix 

func (p *Store) GetPoolsByNamePrefix(prefix string) ([]*Pool, error)

GetPoolsByNamePrefix returns all pools with names starting with a given string

func (*Store) GetSecret 

func (p *Store) GetSecret() []byte

GetSecret returns the secret used to check tokens

func (*Store) GetTime 

func (p *Store) GetTime() int64

GetTime allows flexibility in choosing clock source default is internal clock of the server

func (*Store) PostImportEssential 

func (p *Store) PostImportEssential()

PostImportEssential sets up mutexes and Now() functions

func (*Store) PostImportSetNow 

func (p *Store) PostImportSetNow(now func() int64)

PostImportSetNow applies a custom Now() func to the poolstore and all pools - useful for mocking time in tests which involve import/export

func (*Store) Reset 

func (p *Store) Reset()

Reset removes all pools and groups but does not change min/max session durations

func (*Store) SetSecret 

func (p *Store) SetSecret(secret string)

SetSecret sets the secret used to check token validity and sign tokens for streaming

func (*Store) WithBookingTokenDuration 

func (p *Store) WithBookingTokenDuration(duration int64) *Store

WithBookingTokenDuration sets the duration for which booking tokens are valid

func (*Store) WithNow 

func (p *Store) WithNow(now func() int64) *Store

WithNow sets the function that returns the datetime in seconds at the current time (useful for testing)

func (*Store) WithSecret 

func (p *Store) WithSecret(secret string) *Store

WithSecret sets the secret used by the booking store

type Stream 

type Stream struct {
	*sync.RWMutex `json:"-"`

	// For is the key in the UI's URL in which the client puts
	// the relay (wss) address and code after getting them
	// from the relay
	For string `json:"for,omitempty"`

	// URL of the relay access point for this stream
	URL string `json:"url"`

	// signed bearer token for accessing the stream
	// submit token in the header
	Token string `json:"token,omitempty"`

	// Verb is the HTTP method, typically post
	Verb string `json:"verb,omitempty"`

	// Permission is a prototype for the permission token that the booking system
	// generates and puts into the Token field
	Permission permission.Token `json:"permission,omitempty"`
}

Stream represents a data or video stream from a relay typically accessed via POST with bearer token

func NewSingleStreamFromModel 

func NewSingleStreamFromModel(ms *models.Stream) *Stream

NewSingleStreamFromModel returns a pointer to a Stream created from the API's model representation

func NewStream 

func NewStream(url string) *Stream

NewStream returns a pointer to a new empty Stream

func (*Stream) GetPermission 

func (s *Stream) GetPermission() permission.Token

GetPermission returns the permission (token) of the Stream

func (*Stream) SetPermission 

func (s *Stream) SetPermission(p permission.Token)

SetPermission sets the permission (token) for the Stream

func (*Stream) WithPermission 

func (s *Stream) WithPermission(p permission.Token) *Stream

WithPermission adds a permission to the Stream

type UI 

type UI struct {
	// URL with moustache {{key}} templating for stream connections
	Description     `json:"description"`
	URL             string   `json:"url"`
	StreamsRequired []string `json:"streamsRequired"`
}

UI represents a UI that can be used with an Activity

func NewSingleUIFromModel 

func NewSingleUIFromModel(mui *models.UserInterface) *UI

NewSingleUIFromModel returns a pointer to a UI created from the API's model representation

func NewUI 

func NewUI(url string) *UI

NewUI returns a pointer to a UI with the given URL

func NewUIsFromModel 

func NewUIsFromModel(modelUIs []*models.UserInterface) []*UI

NewUIsFromModel creates an array of pointers to UI from the API's model representation

func (*UI) WithDescription 

func (u *UI) WithDescription(d Description) *UI

WithDescription adds a description to the UI

func (*UI) WithStreamsRequired 

func (u *UI) WithStreamsRequired(names []string) *UI

WithStreamsRequired adds required streams to the UI

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