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wakapi/models/summary.go

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package models
import (
"errors"
"sort"
"time"
)
const (
NSummaryTypes uint8 = 99
SummaryProject uint8 = 0
SummaryLanguage uint8 = 1
SummaryEditor uint8 = 2
SummaryOS uint8 = 3
SummaryMachine uint8 = 4
SummaryLabel uint8 = 5
)
const UnknownSummaryKey = "unknown"
const DefaultProjectLabel = "default"
type Summary struct {
ID uint `json:"-" gorm:"primary_key"`
User *User `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
UserID string `json:"user_id" gorm:"not null; index:idx_time_summary_user"`
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FromTime CustomTime `json:"from" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
ToTime CustomTime `json:"to" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
Projects SummaryItems `json:"projects" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
Languages SummaryItems `json:"languages" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
Editors SummaryItems `json:"editors" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
OperatingSystems SummaryItems `json:"operating_systems" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
Machines SummaryItems `json:"machines" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
Labels SummaryItems `json:"labels" gorm:"-"` // labels are not persisted, but calculated at runtime, i.e. when summary is retrieved
}
type SummaryItems []*SummaryItem
type SummaryItem struct {
ID uint64 `json:"-" gorm:"primary_key"`
Summary *Summary `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
SummaryID uint `json:"-"`
Type uint8 `json:"-" gorm:"index:idx_type"`
Key string `json:"key"`
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Total time.Duration `json:"total" swaggertype:"primitive,integer"`
}
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type SummaryItemContainer struct {
Type uint8
Items []*SummaryItem
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}
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type SummaryViewModel struct {
*Summary
*SummaryParams
User *User
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AvatarURL string
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LanguageColors map[string]string
EditorColors map[string]string
OSColors map[string]string
Error string
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Success string
ApiKey string
RawQuery string
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}
type SummaryParams struct {
From time.Time
To time.Time
User *User
Recompute bool
}
type AliasResolver func(t uint8, k string) string
func SummaryTypes() []uint8 {
return []uint8{SummaryProject, SummaryLanguage, SummaryEditor, SummaryOS, SummaryMachine, SummaryLabel}
}
func NativeSummaryTypes() []uint8 {
return []uint8{SummaryProject, SummaryLanguage, SummaryEditor, SummaryOS, SummaryMachine}
}
func (s *Summary) Sorted() *Summary {
sort.Sort(sort.Reverse(s.Projects))
sort.Sort(sort.Reverse(s.Machines))
sort.Sort(sort.Reverse(s.OperatingSystems))
sort.Sort(sort.Reverse(s.Languages))
sort.Sort(sort.Reverse(s.Editors))
sort.Sort(sort.Reverse(s.Labels))
return s
}
func (s *Summary) Types() []uint8 {
return SummaryTypes()
}
func (s *Summary) MappedItems() map[uint8]*SummaryItems {
return map[uint8]*SummaryItems{
SummaryProject: &s.Projects,
SummaryLanguage: &s.Languages,
SummaryEditor: &s.Editors,
SummaryOS: &s.OperatingSystems,
SummaryMachine: &s.Machines,
SummaryLabel: &s.Labels,
}
}
func (s *Summary) ItemsByType(summaryType uint8) *SummaryItems {
return s.MappedItems()[summaryType]
}
/* Augments the summary in a way that at least one item is present for every type.
If a summary has zero items for a given type, but one or more for any of the other types,
the total summary duration can be derived from those and inserted as a dummy-item with key "unknown"
for the missing type.
For instance, the machine type was introduced post hoc. Accordingly, no "machine"-information is present in
the data for old heartbeats and summaries. If a user has two years of data without machine information and
one day with such, a "machine"-chart plotted from that data will reference a way smaller absolute total amount
of time than the other ones.
To avoid having to modify persisted data retrospectively, i.e. inserting a dummy SummaryItem for the new type,
such is generated dynamically here, considering the "machine" for all old heartbeats "unknown".
*/
func (s *Summary) FillMissing() {
types := s.Types()
typeItems := s.MappedItems()
missingTypes := make([]uint8, 0)
for _, t := range types {
if len(*typeItems[t]) == 0 {
missingTypes = append(missingTypes, t)
}
}
// can't proceed if entire summary is empty
if len(missingTypes) == len(types) {
return
}
// construct dummy item for all missing types
presentType, err := s.findFirstPresentType()
if err != nil {
return // all types are either zero or missing entirely, nothing to fill
}
for _, t := range missingTypes {
s.FillBy(presentType, t)
}
}
// inplace!
func (s *Summary) FillBy(fromType uint8, toType uint8) {
typeItems := s.MappedItems()
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totalWanted := s.TotalTimeBy(fromType)
totalActual := s.TotalTimeBy(toType)
key := UnknownSummaryKey
if toType == SummaryLabel {
key = DefaultProjectLabel
}
existingEntryIdx := -1
for i, item := range *typeItems[toType] {
if item.Key == key {
existingEntryIdx = i
break
}
}
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total := (totalWanted - totalActual) / time.Second // workaround
if total > 0 {
if existingEntryIdx >= 0 {
(*typeItems[toType])[existingEntryIdx].Total = total
} else {
*typeItems[toType] = append(*typeItems[toType], &SummaryItem{
Type: toType,
Key: key,
Total: total,
})
}
}
}
func (s *Summary) TotalTime() time.Duration {
var timeSum time.Duration
mappedItems := s.MappedItems()
t, err := s.findFirstPresentType()
if err != nil {
return 0
}
for _, item := range *mappedItems[t] {
timeSum += item.Total
}
return timeSum * time.Second
}
func (s *Summary) TotalTimeBy(entityType uint8) (timeSum time.Duration) {
mappedItems := s.MappedItems()
if items := mappedItems[entityType]; len(*items) > 0 {
for _, item := range *items {
timeSum = timeSum + item.Total*time.Second
}
}
return timeSum
}
func (s *Summary) TotalTimeByKey(entityType uint8, key string) (timeSum time.Duration) {
mappedItems := s.MappedItems()
if items := mappedItems[entityType]; len(*items) > 0 {
for _, item := range *items {
if item.Key != key {
continue
}
timeSum = timeSum + item.Total*time.Second
}
}
return timeSum
}
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func (s *Summary) TotalTimeByFilters(filters *Filters) time.Duration {
do, typeId, key := filters.One()
if do {
return s.TotalTimeByKey(typeId, key)
}
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return 0
}
func (s *Summary) WithResolvedAliases(resolve AliasResolver) *Summary {
processAliases := func(origin []*SummaryItem) []*SummaryItem {
target := make([]*SummaryItem, 0)
findItem := func(key string) *SummaryItem {
for _, item := range target {
if item.Key == key {
return item
}
}
return nil
}
for _, item := range origin {
// Add all "top-level" items, i.e. such without aliases
if key := resolve(item.Type, item.Key); key == item.Key {
target = append(target, item)
}
}
for _, item := range origin {
// Add all remaining projects and merge with their alias
if key := resolve(item.Type, item.Key); key != item.Key {
if targetItem := findItem(key); targetItem != nil {
targetItem.Total += item.Total
} else {
target = append(target, &SummaryItem{
ID: item.ID,
SummaryID: item.SummaryID,
Type: item.Type,
Key: key,
Total: item.Total,
})
}
}
}
return target
}
// Resolve aliases
s.Projects = processAliases(s.Projects)
s.Editors = processAliases(s.Editors)
s.Languages = processAliases(s.Languages)
s.OperatingSystems = processAliases(s.OperatingSystems)
s.Machines = processAliases(s.Machines)
s.Labels = processAliases(s.Labels)
return s
}
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func (s *Summary) findFirstPresentType() (uint8, error) {
for _, t := range s.Types() {
if s.TotalTimeBy(t) != 0 {
return t, nil
}
}
return 127, errors.New("no type present")
}
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func (s *SummaryItem) TotalFixed() time.Duration {
// this is a workaround, since currently, the total time of a summary item is mistakenly represented in seconds
// TODO: fix some day, while migrating persisted summary items
return s.Total * time.Second
}
func (s SummaryItems) Len() int {
return len(s)
}
func (s SummaryItems) Less(i, j int) bool {
return s[i].Total < s[j].Total
}
func (s SummaryItems) Swap(i, j int) {
s[i], s[j] = s[j], s[i]
}