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state.go
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state.go
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package application
import "fmt"
// ClearManaged clears the managed apps
func (m *ApplicationManager) ClearManaged() {
m.lock.Lock()
defer m.lock.Unlock()
m.managedApps = make(map[string]bool)
}
func (m *ApplicationManager) ClearIgnored() {
m.lock.Lock()
defer m.lock.Unlock()
m.observedApp = make(map[string]string)
}
// IsManaged returns whether the app appName is currently managed by this agent
func (m *ApplicationManager) IsManaged(appName string) bool {
m.lock.RLock()
defer m.lock.RUnlock()
_, ok := m.managedApps[appName]
return ok
}
// Manage marks the app appName as being managed by this agent
func (m *ApplicationManager) Manage(appName string) error {
m.lock.Lock()
defer m.lock.Unlock()
_, ok := m.managedApps[appName]
if !ok {
m.managedApps[appName] = true
return nil
} else {
return fmt.Errorf("app %s is already managed", appName)
}
}
// Unmanage marks the app appName as not being managed by this agent
func (m *ApplicationManager) Unmanage(appName string) error {
m.lock.Lock()
defer m.lock.Unlock()
_, ok := m.managedApps[appName]
if !ok {
return fmt.Errorf("app %s is not managed", appName)
} else {
delete(m.managedApps, appName)
return nil
}
}
// IgnoreChange adds a particular version for the application named appName to
// list of changes to ignore.
func (m *ApplicationManager) IgnoreChange(appName string, version string) error {
m.lock.Lock()
defer m.lock.Unlock()
if cur, ok := m.observedApp[appName]; ok && cur == version {
return fmt.Errorf("version %s is already ignored for %s", version, appName)
} else {
m.observedApp[appName] = version
return nil
}
}
// IsChangeIgnored returns true if the version for appName is already being
// ignored.
func (m *ApplicationManager) IsChangeIgnored(appName string, version string) bool {
m.lock.RLock()
defer m.lock.RUnlock()
last, ok := m.observedApp[appName]
if !ok {
return false
}
return last == version
}
func (m *ApplicationManager) UnignoreChange(appName string) error {
m.lock.Lock()
defer m.lock.Unlock()
if _, ok := m.observedApp[appName]; ok {
delete(m.observedApp, appName)
return nil
} else {
return fmt.Errorf("no generation recorded for app %s", appName)
}
}