github.com/onflow/flow-go@v0.35.7-crescendo-preview.23-atree-inlining/state/protocol/blocktimer.go (about)

     1  package protocol
     2  
     3  import (
     4  	"time"
     5  )
     6  
     7  // BlockTimer constructs and validates block timestamps.
     8  type BlockTimer interface {
     9  	// Build generates a timestamp based on definition of valid timestamp.
    10  	Build(parentTimestamp time.Time) time.Time
    11  	// Validate checks validity of a block's time stamp.
    12  	// Error returns
    13  	//  * `model.InvalidBlockTimestampError` if time stamp is invalid.
    14  	//  * all other errors are unexpected and potentially symptoms of internal implementation bugs or state corruption (fatal).
    15  	Validate(parentTimestamp, currentTimestamp time.Time) error
    16  }