| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package dcgm |
| 4 | |
| 5 | import "github.com/netdata/netdata/go/plugins/plugin/framework/collectorapi" |
| 6 | |
| 7 | const ( |
| 8 | maxNotSeenCharts = 10 |
| 9 | maxNotSeenDims = 10 |
| 10 | ) |
| 11 | |
| 12 | type ( |
| 13 | cache struct { |
| 14 | charts map[string]*cacheChart |
| 15 | } |
| 16 | |
| 17 | cacheChart struct { |
| 18 | chart *collectorapi.Chart |
| 19 | seen bool |
| 20 | notSeenTimes int |
| 21 | dims map[string]*cacheDim |
| 22 | } |
| 23 | |
| 24 | cacheDim struct { |
| 25 | seen bool |
| 26 | notSeenTimes int |
| 27 | } |
| 28 | ) |
| 29 | |
| 30 | func newCache() *cache { |
| 31 | return &cache{charts: make(map[string]*cacheChart)} |
| 32 | } |
| 33 | |
| 34 | func (c *cache) reset() { |
| 35 | for _, ch := range c.charts { |
| 36 | ch.seen = false |
| 37 | for _, d := range ch.dims { |
| 38 | d.seen = false |
| 39 | } |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | func (c *cache) getChart(key string) (*cacheChart, bool) { |
| 44 | v, ok := c.charts[key] |
| 45 | if !ok { |
| 46 | return nil, false |
| 47 | } |
| 48 | v.seen = true |
| 49 | v.notSeenTimes = 0 |
| 50 | return v, true |
| 51 | } |
| 52 | |
| 53 | func (c *cache) putChart(key string, chart *collectorapi.Chart) *cacheChart { |
| 54 | v := &cacheChart{chart: chart, seen: true, dims: make(map[string]*cacheDim)} |
| 55 | c.charts[key] = v |
| 56 | return v |
| 57 | } |
| 58 | |
| 59 | func (ch *cacheChart) touchDim(dimID string) (exists bool) { |
| 60 | if d, ok := ch.dims[dimID]; ok { |
| 61 | d.seen = true |
| 62 | d.notSeenTimes = 0 |
| 63 | return true |
| 64 | } |
| 65 | ch.dims[dimID] = &cacheDim{seen: true} |
| 66 | return false |
| 67 | } |
| 68 | |
| 69 | func (c *Collector) removeStaleChartsAndDims() { |
| 70 | for key, ch := range c.cache.charts { |
| 71 | if !ch.seen { |
| 72 | ch.notSeenTimes++ |
| 73 | if ch.notSeenTimes >= maxNotSeenCharts { |
| 74 | ch.chart.MarkRemove() |
| 75 | ch.chart.MarkNotCreated() |
| 76 | delete(c.cache.charts, key) |
| 77 | } |
| 78 | continue |
| 79 | } |
| 80 | |
| 81 | for dimID, d := range ch.dims { |
| 82 | if d.seen { |
| 83 | d.notSeenTimes = 0 |
| 84 | continue |
| 85 | } |
| 86 | d.notSeenTimes++ |
| 87 | if d.notSeenTimes >= maxNotSeenDims { |
| 88 | if err := ch.chart.MarkDimRemove(dimID, false); err != nil { |
| 89 | c.Warning(err) |
| 90 | } |
| 91 | ch.chart.MarkNotCreated() |
| 92 | delete(ch.dims, dimID) |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | } |