100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
package render
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import (
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"sync"
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)
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// TableData tracks a K8s resource for tabular display.
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type TableData struct {
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Header HeaderRow
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RowEvents RowEvents
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Namespace string
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Mutex *sync.RWMutex
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}
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// NewTableData returns a new table.
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func NewTableData() *TableData {
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return &TableData{Mutex: &sync.RWMutex{}}
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}
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// Clear clears out the entire table.
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func (t *TableData) Clear() {
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t.Header, t.RowEvents = t.Header.Clear(), t.RowEvents.Clear()
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}
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// Clone returns a copy of the table
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func (t *TableData) Clone() TableData {
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return cloneTable(*t)
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}
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func cloneTable(t TableData) TableData {
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return t
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}
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// Update computes row deltas and update the table data.
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func (t *TableData) Update(rows Rows) {
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empty := len(t.RowEvents) == 0
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kk := make([]string, 0, len(rows))
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var blankDelta DeltaRow
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for _, row := range rows {
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kk = append(kk, row.ID)
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if empty {
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t.RowEvents = append(t.RowEvents, NewRowEvent(EventAdd, row))
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continue
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}
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if index, ok := t.RowEvents.FindIndex(row.ID); ok {
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delta := NewDeltaRow(t.RowEvents[index].Row, row, t.Header.HasAge())
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if delta.IsBlank() {
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t.RowEvents[index].Kind, t.RowEvents[index].Deltas = EventUnchanged, blankDelta
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t.RowEvents[index].Row = row
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} else {
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t.RowEvents[index] = NewDeltaRowEvent(row, delta)
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}
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continue
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}
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t.RowEvents = append(t.RowEvents, NewRowEvent(EventAdd, row))
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}
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if !empty {
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t.Delete(kk)
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}
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}
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// Delete delete items in cache that are no longer valid.
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func (t *TableData) Delete(newKeys []string) {
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var victims []string
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for _, re := range t.RowEvents {
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var found bool
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for i, key := range newKeys {
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if key == re.Row.ID {
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found = true
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newKeys = append(newKeys[:i], newKeys[i+1:]...)
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break
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}
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}
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if !found {
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victims = append(victims, re.Row.ID)
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}
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}
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for _, id := range victims {
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t.RowEvents = t.RowEvents.Delete(id)
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}
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}
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// Diff checks if two tables are equal.
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func (t *TableData) Diff(table TableData) bool {
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if t.Namespace != table.Namespace {
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return true
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}
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if t.Header.Changed(table.Header) {
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return true
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}
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if t.RowEvents.Changed(table.RowEvents) {
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return true
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}
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return false
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}
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