| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package elasticsearch |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "slices" |
| 9 | "strconv" |
| 10 | "strings" |
| 11 | "sync" |
| 12 | |
| 13 | "github.com/netdata/netdata/go/plugins/pkg/stm" |
| 14 | "github.com/netdata/netdata/go/plugins/pkg/web" |
| 15 | "github.com/netdata/netdata/go/plugins/plugin/go.d/pkg/oldmetrix" |
| 16 | ) |
| 17 | |
| 18 | const ( |
| 19 | urlPathLocalNodeStats = "/_nodes/_local/stats" |
| 20 | urlPathNodesStats = "/_nodes/stats" |
| 21 | urlPathIndicesStats = "/_cat/indices" |
| 22 | urlPathClusterHealth = "/_cluster/health" |
| 23 | urlPathClusterStats = "/_cluster/stats" |
| 24 | ) |
| 25 | |
| 26 | func (c *Collector) collect() (map[string]int64, error) { |
| 27 | if c.clusterName == "" { |
| 28 | name, err := c.getClusterName() |
| 29 | if err != nil { |
| 30 | return nil, err |
| 31 | } |
| 32 | c.clusterName = name |
| 33 | } |
| 34 | |
| 35 | ms := c.scrapeElasticsearch() |
| 36 | if ms.empty() { |
| 37 | return nil, nil |
| 38 | } |
| 39 | |
| 40 | mx := make(map[string]int64) |
| 41 | |
| 42 | c.collectNodesStats(mx, ms) |
| 43 | c.collectClusterHealth(mx, ms) |
| 44 | c.collectClusterStats(mx, ms) |
| 45 | c.collectLocalIndicesStats(mx, ms) |
| 46 | |
| 47 | return mx, nil |
| 48 | } |
| 49 | |
| 50 | func (c *Collector) collectNodesStats(mx map[string]int64, ms *esMetrics) { |
| 51 | if !ms.hasNodesStats() { |
| 52 | return |
| 53 | } |
| 54 | |
| 55 | seen := make(map[string]bool) |
| 56 | |
| 57 | for nodeID, node := range ms.NodesStats.Nodes { |
| 58 | seen[nodeID] = true |
| 59 | |
| 60 | if !c.nodes[nodeID] { |
| 61 | c.nodes[nodeID] = true |
| 62 | c.addNodeCharts(nodeID, node) |
| 63 | } |
| 64 | |
| 65 | merge(mx, stm.ToMap(node), "node_"+nodeID) |
| 66 | } |
| 67 | |
| 68 | for nodeID := range c.nodes { |
| 69 | if !seen[nodeID] { |
| 70 | delete(c.nodes, nodeID) |
| 71 | c.removeNodeCharts(nodeID) |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | func (c *Collector) collectClusterHealth(mx map[string]int64, ms *esMetrics) { |
| 77 | if !ms.hasClusterHealth() { |
| 78 | return |
| 79 | } |
| 80 | |
| 81 | c.addClusterHealthChartsOnce.Do(c.addClusterHealthCharts) |
| 82 | |
| 83 | merge(mx, stm.ToMap(ms.ClusterHealth), "cluster") |
| 84 | |
| 85 | mx["cluster_status_green"] = oldmetrix.Bool(ms.ClusterHealth.Status == "green") |
| 86 | mx["cluster_status_yellow"] = oldmetrix.Bool(ms.ClusterHealth.Status == "yellow") |
| 87 | mx["cluster_status_red"] = oldmetrix.Bool(ms.ClusterHealth.Status == "red") |
| 88 | } |
| 89 | |
| 90 | func (c *Collector) collectClusterStats(mx map[string]int64, ms *esMetrics) { |
| 91 | if !ms.hasClusterStats() { |
| 92 | return |
| 93 | } |
| 94 | |
| 95 | c.addClusterStatsChartsOnce.Do(c.addClusterStatsCharts) |
| 96 | |
| 97 | merge(mx, stm.ToMap(ms.ClusterStats), "cluster") |
| 98 | } |
| 99 | |
| 100 | func (c *Collector) collectLocalIndicesStats(mx map[string]int64, ms *esMetrics) { |
| 101 | if !ms.hasLocalIndicesStats() { |
| 102 | return |
| 103 | } |
| 104 | |
| 105 | seen := make(map[string]bool) |
| 106 | |
| 107 | for _, v := range ms.LocalIndicesStats { |
| 108 | seen[v.Index] = true |
| 109 | |
| 110 | if !c.indices[v.Index] { |
| 111 | c.indices[v.Index] = true |
| 112 | c.addIndexCharts(v.Index) |
| 113 | } |
| 114 | |
| 115 | px := fmt.Sprintf("node_index_%s_stats_", v.Index) |
| 116 | |
| 117 | mx[px+"health_green"] = oldmetrix.Bool(v.Health == "green") |
| 118 | mx[px+"health_yellow"] = oldmetrix.Bool(v.Health == "yellow") |
| 119 | mx[px+"health_red"] = oldmetrix.Bool(v.Health == "red") |
| 120 | mx[px+"shards_count"] = strToInt(v.Rep) |
| 121 | mx[px+"docs_count"] = strToInt(v.DocsCount) |
| 122 | mx[px+"store_size_in_bytes"] = convertIndexStoreSizeToBytes(v.StoreSize) |
| 123 | } |
| 124 | |
| 125 | for index := range c.indices { |
| 126 | if !seen[index] { |
| 127 | delete(c.indices, index) |
| 128 | c.removeIndexCharts(index) |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | func (c *Collector) scrapeElasticsearch() *esMetrics { |
| 134 | ms := &esMetrics{} |
| 135 | wg := &sync.WaitGroup{} |
| 136 | |
| 137 | if c.DoNodeStats { |
| 138 | wg.Go(func() { c.scrapeNodesStats(ms) }) |
| 139 | } |
| 140 | if c.DoClusterHealth { |
| 141 | wg.Go(func() { c.scrapeClusterHealth(ms) }) |
| 142 | } |
| 143 | if c.DoClusterStats { |
| 144 | wg.Go(func() { c.scrapeClusterStats(ms) }) |
| 145 | } |
| 146 | if !c.ClusterMode && c.DoIndicesStats { |
| 147 | wg.Go(func() { c.scrapeLocalIndicesStats(ms) }) |
| 148 | } |
| 149 | wg.Wait() |
| 150 | |
| 151 | return ms |
| 152 | } |
| 153 | |
| 154 | func (c *Collector) scrapeNodesStats(ms *esMetrics) { |
| 155 | var p string |
| 156 | if c.ClusterMode { |
| 157 | p = urlPathNodesStats |
| 158 | } else { |
| 159 | p = urlPathLocalNodeStats |
| 160 | } |
| 161 | |
| 162 | req, _ := web.NewHTTPRequestWithPath(c.RequestConfig, p) |
| 163 | |
| 164 | var stats esNodesStats |
| 165 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &stats); err != nil { |
| 166 | c.Warning(err) |
| 167 | return |
| 168 | } |
| 169 | |
| 170 | ms.NodesStats = &stats |
| 171 | } |
| 172 | |
| 173 | func (c *Collector) scrapeClusterHealth(ms *esMetrics) { |
| 174 | req, _ := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathClusterHealth) |
| 175 | |
| 176 | var health esClusterHealth |
| 177 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &health); err != nil { |
| 178 | c.Warning(err) |
| 179 | return |
| 180 | } |
| 181 | |
| 182 | ms.ClusterHealth = &health |
| 183 | } |
| 184 | |
| 185 | func (c *Collector) scrapeClusterStats(ms *esMetrics) { |
| 186 | req, _ := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathClusterStats) |
| 187 | |
| 188 | var stats esClusterStats |
| 189 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &stats); err != nil { |
| 190 | c.Warning(err) |
| 191 | return |
| 192 | } |
| 193 | |
| 194 | ms.ClusterStats = &stats |
| 195 | } |
| 196 | |
| 197 | func (c *Collector) scrapeLocalIndicesStats(ms *esMetrics) { |
| 198 | req, _ := web.NewHTTPRequestWithPath(c.RequestConfig, urlPathIndicesStats) |
| 199 | req.URL.RawQuery = "local=true&format=json" |
| 200 | |
| 201 | var stats []esIndexStats |
| 202 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &stats); err != nil { |
| 203 | c.Warning(err) |
| 204 | return |
| 205 | } |
| 206 | |
| 207 | ms.LocalIndicesStats = removeSystemIndices(stats) |
| 208 | } |
| 209 | |
| 210 | func (c *Collector) getClusterName() (string, error) { |
| 211 | req, err := web.NewHTTPRequest(c.RequestConfig) |
| 212 | if err != nil { |
| 213 | return "", err |
| 214 | } |
| 215 | |
| 216 | var info struct { |
| 217 | ClusterName string `json:"cluster_name"` |
| 218 | } |
| 219 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &info); err != nil { |
| 220 | return "", err |
| 221 | } |
| 222 | |
| 223 | if info.ClusterName == "" { |
| 224 | return "", errors.New("empty cluster name") |
| 225 | } |
| 226 | |
| 227 | return info.ClusterName, nil |
| 228 | } |
| 229 | |
| 230 | func convertIndexStoreSizeToBytes(size string) int64 { |
| 231 | var num float64 |
| 232 | switch { |
| 233 | case strings.HasSuffix(size, "kb"): |
| 234 | num, _ = strconv.ParseFloat(size[:len(size)-2], 64) |
| 235 | num *= 1024 |
| 236 | case strings.HasSuffix(size, "mb"): |
| 237 | num, _ = strconv.ParseFloat(size[:len(size)-2], 64) |
| 238 | num *= 1024 * 1024 |
| 239 | case strings.HasSuffix(size, "gb"): |
| 240 | num, _ = strconv.ParseFloat(size[:len(size)-2], 64) |
| 241 | num *= 1024 * 1024 * 1024 |
| 242 | case strings.HasSuffix(size, "tb"): |
| 243 | num, _ = strconv.ParseFloat(size[:len(size)-2], 64) |
| 244 | num *= 1024 * 1024 * 1024 * 1024 |
| 245 | case strings.HasSuffix(size, "b"): |
| 246 | num, _ = strconv.ParseFloat(size[:len(size)-1], 64) |
| 247 | } |
| 248 | return int64(num) |
| 249 | } |
| 250 | |
| 251 | func strToInt(s string) int64 { |
| 252 | v, _ := strconv.Atoi(s) |
| 253 | return int64(v) |
| 254 | } |
| 255 | |
| 256 | func removeSystemIndices(indices []esIndexStats) []esIndexStats { |
| 257 | return slices.DeleteFunc(indices, func(stats esIndexStats) bool { |
| 258 | return strings.HasPrefix(stats.Index, ".") |
| 259 | }) |
| 260 | } |
| 261 | |
| 262 | func merge(dst, src map[string]int64, prefix string) { |
| 263 | for k, v := range src { |
| 264 | dst[prefix+"_"+k] = v |
| 265 | } |
| 266 | } |