Documentation
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Overview ¶
Package valueholder provides a struct called ValueHolder that holds a value, its last update time, its last zero update time, and a zero value string. It also has a lock for synchronization (race condition prevention).
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type ValueHolder ¶
type ValueHolder struct {
// contains filtered or unexported fields
}
ValueHolder is a ByteWriter that holds the byte value of the last data written to it. It provides methods to read and update the value, as well as to retrieve its last update time and zero update time. The lock field is used to synchronize access to the data field and prevent race conditions.
func NewValueHolder ¶
func NewValueHolder(zero string) *ValueHolder
NewValueHolder creates a new instance of ValueHolder with the provided zero value. It initializes the data field with an empty slice, the lastUpdate and lastZero fields with the current time, and the zero field with the provided zero value.
func (*ValueHolder) String ¶
func (v *ValueHolder) String() string
String returns the current value of the ValueHolder as a string. It acquires a lock before reading the data field and releases it afterwards.
func (*ValueHolder) ToMap ¶
func (v *ValueHolder) ToMap() map[string]any
ToMap returns a map containing the current value, whether it's zero, the last update time, and the last zero update time, formatted according to RFC3339.
func (*ValueHolder) Write ¶
func (v *ValueHolder) Write(p []byte) (n int, err error)
Write updates the current value of the ValueHolder with the provided data slice. It acquires a lock before updating the data field, the lastUpdate field, and releases it afterwards. If the new value is equal to the zero value, it updates the lastZero field with the current time.
Source Files