chunkenc

type Appender interface {
	Append(int64, float64)
}

type Chunk interface {
	// Bytes returns the underlying byte slice of the chunk.
	Bytes() []byte

	// Encoding returns the encoding type of the chunk.
	Encoding() Encoding

	// Appender returns an appender to append samples to the chunk.
	Appender() (Appender, error)

	// The iterator passed as argument is for re-use.
	// Depending on implementation, the iterator can
	// be re-used or a new iterator can be allocated.
	Iterator(Iterator) Iterator

	// NumSamples returns the number of samples in the chunk.
	NumSamples() int

	// Compact is called whenever a chunk is expected to be complete (no more
	// samples appended) and the underlying implementation can eventually
	// optimize the chunk.
	// There's no strong guarantee that no samples will be appended once
	// Compact() is called. Implementing this function is optional.
	Compact()
}

type Encoding uint8

type Iterator interface {
	// Next advances the iterator by one.
	Next() bool
	// Seek advances the iterator forward to the first sample with the timestamp equal or greater than t.
	// If current sample found by previous `Next` or `Seek` operation already has this property, Seek has no effect.
	// Seek returns true, if such sample exists, false otherwise.
	// Iterator is exhausted when the Seek returns false.
	Seek(t int64) bool
	// At returns the current timestamp/value pair.
	// Before the iterator has advanced At behaviour is unspecified.
	At() (int64, float64)
	// Err returns the current error. It should be used only after iterator is
	// exhausted, that is `Next` or `Seek` returns false.
	Err() error
}

type Pool interface {
	Put(Chunk) error
	Get(e Encoding, b []byte) (Chunk, error)
}

type XORChunk struct {
	// contains filtered or unexported fields
}