app

package
v0.0.0-...-5facc9d Latest Latest
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 Go to latest Published: Sep 17, 2013 License: BSD-3-Clause Imports: 35 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	RegenerateApprcAndStart = "regenerate-apprc-start-app"
	BindService             = "bind-service"
)

Variables

View Source 
var ErrAppAlreadyExists = errors.New("there is already an app with this name.")
View Source 
var Provisioner provision.Provisioner

Functions

func CreateApp 

func CreateApp(app *App, user *auth.User) error

CreateApp creates a new app.

Creating a new app is a process composed of four steps:

  1. Save the app in the database
  2. Create IAM credentials for the app
  3. Create S3 bucket for the app (if the bucket support is enabled)
  4. Create the git repository using gandalf
  5. Provision units within the provisioner

func Enqueue 

func Enqueue(msgs ...queue.Message)

Enqueue puts the given message in the queue. The app queue is able to handle only messages defined in this package.

Here is a functional example for this function: 

msg := queue.Message{Action: app.RegenerateApprcAndStart, Args: []string{"myapp"}}
app.Enqueue(msg)

func ForceDestroy 

func ForceDestroy(app *App) error

ForceDestroy destroys an app with force.

Destroying an app is a process composed of four steps:

  1. Destroy the bucket and S3 credentials (if bucket-support is enabled).
  2. Destroy the app unit using juju
  3. Unbind all service instances from the app
  4. Remove the app from the database

func LogRemove 

func LogRemove(a *App) error

LogRemove removes the app log.

func Swap 

func Swap(app1, app2 *App) error

Swap calls the Provisioner.Swap.

Types

type App 

type App struct {
	Env      map[string]bind.EnvVar
	Platform string `bson:"framework"`
	Name     string
	Ip       string
	CName    string
	Units    []Unit
	Teams    []string
	Owner    string
	State    string
	Deploys  uint
	// contains filtered or unexported fields
}

App is the main type in tsuru. An app represents a real world application. This struct holds information about the app: its name, address, list of teams that have access to it, used platform, etc.

func List 

func List(u *auth.User) ([]App, error)

List returns the list of apps that the given user has access to.

If the user does not have acces to any app, this function returns an empty list and a nil error.

func (*App) AddUnit 

func (app *App) AddUnit(u *Unit)

AddUnit adds a new unit to the app (or update an existing unit). It just updates the internal list of units, it does not talk to the provisioner. For provisioning a new unit for the app, one should use AddUnits method, which receives the number of units that you want to provision.

func (*App) AddUnits 

func (app *App) AddUnits(n uint) error

AddUnits creates n new units within the provisioner, saves new units in the database and enqueues the apprc serialization.

func (*App) Available 

func (app *App) Available() bool

Available returns true if at least one of N units is started.

func (*App) Get 

func (app *App) Get() error

Get queries the database and fills the App object with data retrieved from the database. It uses the name of the app as filter in the query, so you can provide this field: 

app := App{Name: "myapp"}
err := app.Get()
// do something with the app

func (*App) GetDeploys 

func (app *App) GetDeploys() uint

func (*App) GetIp 

func (app *App) GetIp() string

GetIp returns the ip of the app.

func (*App) GetName 

func (app *App) GetName() string

GetName returns the name of the app.

func (*App) GetPlatform 

func (app *App) GetPlatform() string

GetPlatform returns the platform of the app.

func (*App) GetTeams 

func (app *App) GetTeams() []auth.Team

GetTeams returns a slice of teams that have access to the app.

func (*App) GetUnits 

func (app *App) GetUnits() []bind.Unit

GetUnits returns the internal list of units converted to bind.Unit.

func (*App) Grant 

func (app *App) Grant(team *auth.Team) error

Grant allows a team to have access to an app. It returns an error if the team already have access to the app.

func (*App) InstanceEnv 

func (app *App) InstanceEnv(name string) map[string]bind.EnvVar

InstanceEnv returns a map of environment variables that belongs to the given service instance (identified by the name only).

TODO(fss): this method should not be exported.

func (*App) LastLogs 

func (app *App) LastLogs(lines int, source string) ([]Applog, error)

LastLogs returns a list of the last `lines` log of the app, matching the given source.

func (*App) Log 

func (app *App) Log(message, source string) error

Log adds a log message to the app. Specifying a good source is good so the user can filter where the message come from.

func (*App) MarshalJSON 

func (app *App) MarshalJSON() ([]byte, error)

MarshalJSON marshals the app in json format. It returns a JSON object with the following keys: name, framework, teams, units, repository and ip.

func (*App) ProvisionedUnits 

func (app *App) ProvisionedUnits() []provision.AppUnit

ProvisionedUnits returns the internal list of units converted to provision.AppUnit.

func (*App) Ready 

func (app *App) Ready() error

func (*App) RemoveUnit 

func (app *App) RemoveUnit(id string) error

RemoveUnit removes a unit by its InstanceId or Name.

Will search first by InstanceId, if no instance is found, then tries to search using the unit name, then calls the removal function from provisioner

Returns an error in case of failure.

func (*App) RemoveUnits 

func (app *App) RemoveUnits(n uint) error

RemoveUnits removes n units from the app. It's a process composed of x steps:

  1. Remove units from the provisioner
  2. Unbind units from service instances bound to the app
  3. Remove units from the app list
  4. Update the app in the database

func (*App) Restart 

func (app *App) Restart(w io.Writer) error

Restart runs the restart hook for the app, writing its output to w.

func (*App) Revoke 

func (app *App) Revoke(team *auth.Team) error

Revoke removes the access from a team. It returns an error if the team do not have access to the app.

func (*App) Run 

func (app *App) Run(cmd string, w io.Writer, once bool) error

Run executes the command in app units, sourcing apprc before running the command.

func (*App) SerializeEnvVars 

func (app *App) SerializeEnvVars() error

SerializeEnvVars serializes the environment variables of the app. The environment variables will be written the the file /home/application/apprc in all units of the app.

func (*App) SetCName 

func (app *App) SetCName(cname string) error

SetCName defines the CName of the app. It updates the attribute, calls the SetCName function on the provisioner and saves the app in the database, returning an error when it cannot save the change in the database or set the CName on the provisioner.

func (*App) SetEnvs 

func (app *App) SetEnvs(envs []bind.EnvVar, publicOnly bool) error

SetEnvs saves a list of environment variables in the app. The publicOnly parameter indicates whether only public variables can be overridden (if set to false, SetEnvs may override a private variable).

func (*App) SetTeams 

func (app *App) SetTeams(teams []auth.Team)

SetTeams sets the values of the internal te

TODO(fss): this method should not be exported.

func (*App) UnsetCName 

func (app *App) UnsetCName() error

func (*App) UnsetEnvs 

func (app *App) UnsetEnvs(variableNames []string, publicOnly bool) error

UnsetEnvs removes environment variables from an app, serializing the remaining list of environment variables to all units of the app.

Besides the slice with the name of the variables, this method also takes the parameter publicOnly, which indicates whether only public variables can be overridden (if set to false, setEnvsToApp may override a private variable).

type AppCreationError 

type AppCreationError struct {
	Err error
	// contains filtered or unexported fields
}

func (*AppCreationError) Error 

func (e *AppCreationError) Error() string

type Applog 

type Applog struct {
	Date    time.Time
	Message string
	Source  string
	AppName string
}

Applog represents a log entry.

type InvalidPlatformError 

type InvalidPlatformError struct{}

func (InvalidPlatformError) Error 

func (InvalidPlatformError) Error() string

type LogListener 

type LogListener struct {
	C <-chan Applog
	// contains filtered or unexported fields
}

func NewLogListener 

func NewLogListener(a *App) *LogListener

func (*LogListener) Close 

func (l *LogListener) Close() error

type LogWriter 

type LogWriter struct {
	App    Logger
	Writer io.Writer
}

func (*LogWriter) Write 

func (w *LogWriter) Write(data []byte) (int, error)

Write writes and logs the data.

type Logger 

type Logger interface {
	Log(string, string) error
}

type NoTeamsError 

type NoTeamsError struct{}

NoTeamsError is the error returned when one tries to create an app without any team.

func (NoTeamsError) Error 

func (err NoTeamsError) Error() string

type Platform 

type Platform struct {
	Name string `bson:"_id"`
}

func Platforms 

func Platforms() ([]Platform, error)

Platforms returns the list of available platforms.

type Unit 

type Unit struct {
	Name       string
	Type       string
	Machine    int
	InstanceId string
	Ip         string
	State      string
	QuotaItem  string
	// contains filtered or unexported fields
}

Unit is the smaller bit in tsuru. Each app is composed of one or more units.

The unit is equivalent to a machine. How the machine is actually represented (baremetal, virtual machine, jails, containers, etc.) is up to the provisioner.

func (*Unit) GetInstanceId 

func (u *Unit) GetInstanceId() string

func (*Unit) GetIp 

func (u *Unit) GetIp() string

func (*Unit) GetMachine 

func (u *Unit) GetMachine() int

func (*Unit) GetName 

func (u *Unit) GetName() string

func (*Unit) GetStatus 

func (u *Unit) GetStatus() provision.Status

type UnitSlice 

type UnitSlice []Unit

UnitSlice attaches the methods of sort.Interface to []Unit, sorting in increasing order.

func (UnitSlice) Len 

func (u UnitSlice) Len() int

func (UnitSlice) Less 

func (u UnitSlice) Less(i, j int) bool

func (UnitSlice) Swap 

func (u UnitSlice) Swap(i, j int)

Source Files

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Directories

Path Synopsis
Package bind provides interfaces and types for use when binding an app to a service.
 Package bind provides interfaces and types for use when binding an app to a service.

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