| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package maxscale |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "net" |
| 8 | "strconv" |
| 9 | "strings" |
| 10 | "unicode" |
| 11 | |
| 12 | "github.com/netdata/netdata/go/plugins/pkg/web" |
| 13 | ) |
| 14 | |
| 15 | const ( |
| 16 | urlPathMaxscale = "/maxscale" |
| 17 | urlPathMaxscaleThreads = "/maxscale/threads" |
| 18 | urlPathServers = "/servers" |
| 19 | ) |
| 20 | |
| 21 | func (c *Collector) collect() (map[string]int64, error) { |
| 22 | mx := make(map[string]int64) |
| 23 | |
| 24 | if err := c.collectMaxScaleGlobal(mx); err != nil { |
| 25 | return nil, err |
| 26 | } |
| 27 | if err := c.collectMaxScaleThreads(mx); err != nil { |
| 28 | return nil, err |
| 29 | } |
| 30 | if err := c.collectServers(mx); err != nil { |
| 31 | return nil, err |
| 32 | } |
| 33 | |
| 34 | return mx, nil |
| 35 | } |
| 36 | |
| 37 | func (c *Collector) collectMaxScaleGlobal(mx map[string]int64) error { |
| 38 | req, err := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathMaxscale) |
| 39 | if err != nil { |
| 40 | return fmt.Errorf("failed to create HTTP request: %v", err) |
| 41 | } |
| 42 | |
| 43 | var resp maxscaleGlobalResponse |
| 44 | |
| 45 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &resp); err != nil { |
| 46 | return err |
| 47 | } |
| 48 | |
| 49 | if resp.Data == nil { |
| 50 | return fmt.Errorf("invalid response from '%s': missing expected MaxScale data", req.URL) |
| 51 | } |
| 52 | |
| 53 | mx["uptime"] = resp.Data.Attrs.Uptime |
| 54 | |
| 55 | return nil |
| 56 | } |
| 57 | |
| 58 | func (c *Collector) collectMaxScaleThreads(mx map[string]int64) error { |
| 59 | req, err := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathMaxscaleThreads) |
| 60 | if err != nil { |
| 61 | return fmt.Errorf("failed to create HTTP request: %v", err) |
| 62 | } |
| 63 | |
| 64 | var resp maxscaleThreadsResponse |
| 65 | |
| 66 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &resp); err != nil { |
| 67 | return err |
| 68 | } |
| 69 | |
| 70 | for _, r := range resp.Data { |
| 71 | st := r.Attrs.Stats |
| 72 | mx["threads_reads"] += st.Reads |
| 73 | mx["threads_writes"] += st.Writes |
| 74 | mx["threads_errors"] += st.Errors |
| 75 | mx["threads_hangups"] += st.Hangups |
| 76 | mx["threads_accepts"] += st.Accepts |
| 77 | mx["threads_sessions"] += st.Sessions |
| 78 | mx["threads_zombies"] += st.Zombies |
| 79 | mx["threads_current_fds"] += st.CurrentDescriptors |
| 80 | mx["threads_total_fds"] += st.TotalDescriptors |
| 81 | mx["threads_qc_cache_inserts"] += st.QCCache.Inserts |
| 82 | mx["threads_qc_cache_evictions"] += st.QCCache.Evictions |
| 83 | mx["threads_qc_cache_hits"] += st.QCCache.Hits |
| 84 | mx["threads_qc_cache_misses"] += st.QCCache.Misses |
| 85 | for _, v := range threadStates { |
| 86 | mx["threads_state_"+v] = 0 |
| 87 | } |
| 88 | mx["threads_state_"+st.State]++ |
| 89 | } |
| 90 | |
| 91 | return nil |
| 92 | } |
| 93 | |
| 94 | func (c *Collector) collectServers(mx map[string]int64) error { |
| 95 | req, err := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathServers) |
| 96 | if err != nil { |
| 97 | return fmt.Errorf("failed to create HTTP request: %v", err) |
| 98 | } |
| 99 | |
| 100 | var resp serversResponse |
| 101 | |
| 102 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &resp); err != nil { |
| 103 | return err |
| 104 | } |
| 105 | |
| 106 | seen := make(map[string]bool) |
| 107 | |
| 108 | for _, r := range resp.Data { |
| 109 | if r.ID == "" { |
| 110 | continue |
| 111 | } |
| 112 | |
| 113 | seen[r.ID] = true |
| 114 | |
| 115 | if !c.seenServers[r.ID] { |
| 116 | c.seenServers[r.ID] = true |
| 117 | addr := net.JoinHostPort(r.Attrs.Params.Address, strconv.Itoa(int(r.Attrs.Params.Port))) |
| 118 | c.addServerCharts(r.ID, addr) |
| 119 | } |
| 120 | |
| 121 | px := fmt.Sprintf("server_%s_", r.ID) |
| 122 | |
| 123 | mx[px+"connections"] = r.Attrs.Statistics.Connections |
| 124 | |
| 125 | for _, v := range serverStates { |
| 126 | mx[px+"state_"+v] = 0 |
| 127 | } |
| 128 | for _, v := range strings.FieldsFunc(r.Attrs.State, unicode.IsSpace) { |
| 129 | mx[px+"state_"+v] = 1 |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | for id := range c.seenServers { |
| 134 | if !seen[id] { |
| 135 | delete(c.seenServers, id) |
| 136 | c.removeServerCharts(id) |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | return nil |
| 141 | } |