func newRunOnceTask(offer *mesos.Offer, taskID string) *runOnceTask {
return &runOnceTask{
State: mesos.TaskState_TASK_STAGING,
Attributes: constraints.OfferAttributes(offer),
TaskID: taskID,
}
}
func (ctx *RunOnceApplicationContext) CheckConstraints(offer *mesos.Offer) string {
offerAttributes := constraints.OfferAttributes(offer)
for name, constraints := range ctx.Application.GetConstraints() {
for _, constraint := range constraints {
attribute, exists := offerAttributes[name]
if exists {
if !constraint.Matches(attribute, ctx.otherTasksAttributes(name)) {
framework.Logger.Debug("Attribute %s doesn't match %s", name, constraint)
return fmt.Sprintf("%s doesn't match %s", name, constraint)
}
} else {
framework.Logger.Debug("Offer does not contain %s attribute", name)
return fmt.Sprintf("no %s", name)
}
}
}
return ""
}