| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package clickhouse |
| 4 | |
| 5 | import ( |
| 6 | "strconv" |
| 7 | |
| 8 | "github.com/netdata/netdata/go/plugins/pkg/web" |
| 9 | ) |
| 10 | |
| 11 | const querySystemDisks = ` |
| 12 | SELECT |
| 13 | name, |
| 14 | sum(free_space) as free_space, |
| 15 | sum(total_space) as total_space |
| 16 | FROM |
| 17 | system.disks |
| 18 | GROUP BY |
| 19 | name FORMAT CSVWithNames |
| 20 | ` |
| 21 | |
| 22 | type diskStats struct { |
| 23 | name string |
| 24 | totalBytes int64 |
| 25 | freeBytes int64 |
| 26 | } |
| 27 | |
| 28 | func (c *Collector) collectSystemDisks(mx map[string]int64) error { |
| 29 | req, err := web.NewHTTPRequest(c.RequestConfig) |
| 30 | if err != nil { |
| 31 | return err |
| 32 | } |
| 33 | req.URL.RawQuery = makeURLQuery(querySystemDisks) |
| 34 | |
| 35 | seen := make(map[string]*diskStats) |
| 36 | |
| 37 | getDisk := func(name string) *diskStats { |
| 38 | s, ok := seen[name] |
| 39 | if !ok { |
| 40 | s = &diskStats{name: name} |
| 41 | seen[name] = s |
| 42 | } |
| 43 | return s |
| 44 | } |
| 45 | |
| 46 | var name string |
| 47 | |
| 48 | err = c.doHTTP(req, func(column, value string, lineEnd bool) { |
| 49 | switch column { |
| 50 | case "name": |
| 51 | name = value |
| 52 | case "free_space": |
| 53 | v, _ := strconv.ParseInt(value, 10, 64) |
| 54 | getDisk(name).freeBytes = v |
| 55 | case "total_space": |
| 56 | v, _ := strconv.ParseInt(value, 10, 64) |
| 57 | getDisk(name).totalBytes = v |
| 58 | } |
| 59 | }) |
| 60 | if err != nil { |
| 61 | return err |
| 62 | } |
| 63 | |
| 64 | for _, disk := range seen { |
| 65 | if _, ok := c.seenDisks[disk.name]; !ok { |
| 66 | v := &seenDisk{disk: disk.name} |
| 67 | c.seenDisks[disk.name] = v |
| 68 | c.addDiskCharts(v) |
| 69 | } |
| 70 | |
| 71 | px := "disk_" + disk.name + "_" |
| 72 | |
| 73 | mx[px+"free_space_bytes"] = disk.freeBytes |
| 74 | mx[px+"used_space_bytes"] = disk.totalBytes - disk.freeBytes |
| 75 | } |
| 76 | |
| 77 | for k, v := range c.seenDisks { |
| 78 | if _, ok := seen[k]; !ok { |
| 79 | delete(c.seenDisks, k) |
| 80 | c.removeDiskCharts(v) |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | return nil |
| 85 | } |