// BindApp makes the bind between the service instance and an app.
func (si *ServiceInstance) BindApp(app bind.App) error {
err := si.AddApp(app.GetName())
if err != nil {
return &errors.Http{Code: http.StatusConflict, Message: "This app is already bound to this service instance."}
}
err = si.update()
if err != nil {
return err
}
if len(app.GetUnits()) == 0 {
return &errors.Http{Code: http.StatusPreconditionFailed, Message: "This app does not have an IP yet."}
}
envs := make(chan map[string]string, len(app.GetUnits())+1)
for _, unit := range app.GetUnits() {
go func(unit bind.Unit) {
vars, _ := si.BindUnit(app, unit)
envs <- vars
}(unit)
}
var envVars []bind.EnvVar
for k, v := range <-envs {
envVars = append(envVars, bind.EnvVar{
Name: k,
Value: v,
Public: false,
InstanceName: si.Name,
})
}
return app.SetEnvs(envVars, false)
}
func (si *ServiceInstance) Bind(app bind.App) error {
err := si.AddApp(app.GetName())
if err != nil {
return &errors.Http{Code: http.StatusConflict, Message: "This app is already binded to this service instance."}
}
var envVars []bind.EnvVar
var setEnv = func(env map[string]string) {
for k, v := range env {
envVars = append(envVars, bind.EnvVar{
Name: k,
Value: v,
Public: false,
InstanceName: si.Name,
})
}
}
cli := si.Service().ProductionEndpoint()
if len(app.GetUnits()) == 0 {
return &errors.Http{Code: http.StatusPreconditionFailed, Message: "This app does not have an IP yet."}
}
env, err := cli.Bind(si, app)
if err != nil {
return err
}
setEnv(env)
err = si.update()
if err != nil {
cli.Unbind(si, app)
return err
}
return app.SetEnvs(envVars, false)
}