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package cache
import (
"encoding/gob"
"time"
"github.com/MichaelMure/git-bug/entities/bug"
"github.com/MichaelMure/git-bug/entities/common"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/util/lamport"
)
// Package initialisation used to register the type for (de)serialization
func init() {
gob.Register(BugExcerpt{})
}
var _ Excerpt = &BugExcerpt{}
// BugExcerpt hold a subset of the bug values to be able to sort and filter bugs
// efficiently without having to read and compile each raw bugs.
type BugExcerpt struct {
id entity.Id
CreateLamportTime lamport.Time
EditLamportTime lamport.Time
CreateUnixTime int64
EditUnixTime int64
AuthorId entity.Id
Status common.Status
Labels []bug.Label
Title string
LenComments int
Actors []entity.Id
Participants []entity.Id
CreateMetadata map[string]string
}
func NewBugExcerpt(b *BugCache) *BugExcerpt {
snap := b.Snapshot()
participantsIds := make([]entity.Id, 0, len(snap.Participants))
for _, participant := range snap.Participants {
participantsIds = append(participantsIds, participant.Id())
}
actorsIds := make([]entity.Id, 0, len(snap.Actors))
for _, actor := range snap.Actors {
actorsIds = append(actorsIds, actor.Id())
}
e := &BugExcerpt{
id: b.Id(),
CreateLamportTime: b.CreateLamportTime(),
EditLamportTime: b.EditLamportTime(),
CreateUnixTime: b.FirstOp().Time().Unix(),
EditUnixTime: snap.EditTime().Unix(),
AuthorId: snap.Author.Id(),
Status: snap.Status,
Labels: snap.Labels,
Actors: actorsIds,
Participants: participantsIds,
Title: snap.Title,
LenComments: len(snap.Comments),
CreateMetadata: b.FirstOp().AllMetadata(),
}
return e
}
func (b *BugExcerpt) setId(id entity.Id) {
b.id = id
}
func (b *BugExcerpt) Id() entity.Id {
return b.id
}
func (b *BugExcerpt) CreateTime() time.Time {
return time.Unix(b.CreateUnixTime, 0)
}
func (b *BugExcerpt) EditTime() time.Time {
return time.Unix(b.EditUnixTime, 0)
}
/*
* Sorting
*/
type BugsById []*BugExcerpt
func (b BugsById) Len() int {
return len(b)
}
func (b BugsById) Less(i, j int) bool {
return b[i].id < b[j].id
}
func (b BugsById) Swap(i, j int) {
b[i], b[j] = b[j], b[i]
}
type BugsByCreationTime []*BugExcerpt
func (b BugsByCreationTime) Len() int {
return len(b)
}
func (b BugsByCreationTime) Less(i, j int) bool {
if b[i].CreateLamportTime < b[j].CreateLamportTime {
return true
}
if b[i].CreateLamportTime > b[j].CreateLamportTime {
return false
}
// When the logical clocks are identical, that means we had a concurrent
// edition. In this case we rely on the timestamp. While the timestamp might
// be incorrect due to a badly set clock, the drift in sorting is bounded
// by the first sorting using the logical clock. That means that if users
// synchronize their bugs regularly, the timestamp will rarely be used, and
// should still provide a kinda accurate sorting when needed.
return b[i].CreateUnixTime < b[j].CreateUnixTime
}
func (b BugsByCreationTime) Swap(i, j int) {
b[i], b[j] = b[j], b[i]
}
type BugsByEditTime []*BugExcerpt
func (b BugsByEditTime) Len() int {
return len(b)
}
func (b BugsByEditTime) Less(i, j int) bool {
if b[i].EditLamportTime < b[j].EditLamportTime {
return true
}
if b[i].EditLamportTime > b[j].EditLamportTime {
return false
}
// When the logical clocks are identical, that means we had a concurrent
// edition. In this case we rely on the timestamp. While the timestamp might
// be incorrect due to a badly set clock, the drift in sorting is bounded
// by the first sorting using the logical clock. That means that if users
// synchronize their bugs regularly, the timestamp will rarely be used, and
// should still provide a kinda accurate sorting when needed.
return b[i].EditUnixTime < b[j].EditUnixTime
}
func (b BugsByEditTime) Swap(i, j int) {
b[i], b[j] = b[j], b[i]
}
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