| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package hdfs |
| 4 | |
| 5 | import ( |
| 6 | "encoding/json" |
| 7 | "errors" |
| 8 | "fmt" |
| 9 | "strings" |
| 10 | |
| 11 | "github.com/netdata/netdata/go/plugins/pkg/stm" |
| 12 | "github.com/netdata/netdata/go/plugins/pkg/web" |
| 13 | ) |
| 14 | |
| 15 | const ( |
| 16 | dataNodeType = "DataNode" |
| 17 | nameNodeType = "NameNode" |
| 18 | ) |
| 19 | |
| 20 | func (c *Collector) collect() (map[string]int64, error) { |
| 21 | req, err := web.NewHTTPRequest(c.RequestConfig) |
| 22 | if err != nil { |
| 23 | return nil, fmt.Errorf("failed to create HTTP request: %v", err) |
| 24 | } |
| 25 | |
| 26 | var raw rawJMX |
| 27 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &raw); err != nil { |
| 28 | return nil, err |
| 29 | } |
| 30 | |
| 31 | if raw.isEmpty() { |
| 32 | return nil, errors.New("empty response") |
| 33 | } |
| 34 | |
| 35 | mx := c.collectRawJMX(raw) |
| 36 | |
| 37 | return stm.ToMap(mx), nil |
| 38 | } |
| 39 | |
| 40 | func (c *Collector) determineNodeType() (string, error) { |
| 41 | req, err := web.NewHTTPRequest(c.RequestConfig) |
| 42 | if err != nil { |
| 43 | return "", fmt.Errorf("failed to create HTTP request: %v", err) |
| 44 | } |
| 45 | |
| 46 | var raw rawJMX |
| 47 | if err := web.DoHTTP(c.httpClient).RequestJSON(req, &raw); err != nil { |
| 48 | return "", err |
| 49 | } |
| 50 | |
| 51 | if raw.isEmpty() { |
| 52 | return "", errors.New("empty response") |
| 53 | } |
| 54 | |
| 55 | jvm := raw.findJvm() |
| 56 | if jvm == nil { |
| 57 | return "", errors.New("couldn't find jvm in response") |
| 58 | } |
| 59 | |
| 60 | v, ok := jvm["tag.ProcessName"] |
| 61 | if !ok { |
| 62 | return "", errors.New("couldn't find process name in JvmMetrics") |
| 63 | } |
| 64 | |
| 65 | t := strings.Trim(string(v), "\"") |
| 66 | if t == nameNodeType || t == dataNodeType { |
| 67 | return t, nil |
| 68 | } |
| 69 | return "", errors.New("unknown node type") |
| 70 | } |
| 71 | |
| 72 | func (c *Collector) collectRawJMX(raw rawJMX) *metrics { |
| 73 | var mx metrics |
| 74 | switch c.nodeType { |
| 75 | default: |
| 76 | panic(fmt.Sprintf("unsupported node type : '%s'", c.nodeType)) |
| 77 | case nameNodeType: |
| 78 | c.collectNameNode(&mx, raw) |
| 79 | case dataNodeType: |
| 80 | c.collectDataNode(&mx, raw) |
| 81 | } |
| 82 | return &mx |
| 83 | } |
| 84 | |
| 85 | func (c *Collector) collectNameNode(mx *metrics, raw rawJMX) { |
| 86 | if err := c.collectJVM(mx, raw); err != nil { |
| 87 | c.Debugf("error on collecting jvm : %v", err) |
| 88 | } |
| 89 | |
| 90 | if err := c.collectRPCActivity(mx, raw); err != nil { |
| 91 | c.Debugf("error on collecting rpc activity : %v", err) |
| 92 | } |
| 93 | |
| 94 | if err := c.collectFSNameSystem(mx, raw); err != nil { |
| 95 | c.Debugf("error on collecting fs name system : %v", err) |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | func (c *Collector) collectDataNode(mx *metrics, raw rawJMX) { |
| 100 | if err := c.collectJVM(mx, raw); err != nil { |
| 101 | c.Debugf("error on collecting jvm : %v", err) |
| 102 | } |
| 103 | |
| 104 | if err := c.collectRPCActivity(mx, raw); err != nil { |
| 105 | c.Debugf("error on collecting rpc activity : %v", err) |
| 106 | } |
| 107 | |
| 108 | if err := c.collectFSDatasetState(mx, raw); err != nil { |
| 109 | c.Debugf("error on collecting fs dataset state : %v", err) |
| 110 | } |
| 111 | |
| 112 | if err := c.collectDataNodeActivity(mx, raw); err != nil { |
| 113 | c.Debugf("error on collecting datanode activity state : %v", err) |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | func (c *Collector) collectJVM(mx *metrics, raw rawJMX) error { |
| 118 | v := raw.findJvm() |
| 119 | if v == nil { |
| 120 | return nil |
| 121 | } |
| 122 | |
| 123 | var jvm jvmMetrics |
| 124 | err := writeJSONTo(&jvm, v) |
| 125 | if err != nil { |
| 126 | return err |
| 127 | } |
| 128 | |
| 129 | mx.Jvm = &jvm |
| 130 | return nil |
| 131 | } |
| 132 | |
| 133 | func (c *Collector) collectRPCActivity(mx *metrics, raw rawJMX) error { |
| 134 | v := raw.findRPCActivity() |
| 135 | if v == nil { |
| 136 | return nil |
| 137 | } |
| 138 | |
| 139 | var rpc rpcActivityMetrics |
| 140 | err := writeJSONTo(&rpc, v) |
| 141 | if err != nil { |
| 142 | return err |
| 143 | } |
| 144 | |
| 145 | mx.Rpc = &rpc |
| 146 | return nil |
| 147 | } |
| 148 | |
| 149 | func (c *Collector) collectFSNameSystem(mx *metrics, raw rawJMX) error { |
| 150 | v := raw.findFSNameSystem() |
| 151 | if v == nil { |
| 152 | return nil |
| 153 | } |
| 154 | |
| 155 | var fs fsNameSystemMetrics |
| 156 | err := writeJSONTo(&fs, v) |
| 157 | if err != nil { |
| 158 | return err |
| 159 | } |
| 160 | |
| 161 | fs.CapacityUsed = fs.CapacityDfsUsed + fs.CapacityUsedNonDFS |
| 162 | |
| 163 | mx.FSNameSystem = &fs |
| 164 | return nil |
| 165 | } |
| 166 | |
| 167 | func (c *Collector) collectFSDatasetState(mx *metrics, raw rawJMX) error { |
| 168 | v := raw.findFSDatasetState() |
| 169 | if v == nil { |
| 170 | return nil |
| 171 | } |
| 172 | |
| 173 | var fs fsDatasetStateMetrics |
| 174 | err := writeJSONTo(&fs, v) |
| 175 | if err != nil { |
| 176 | return err |
| 177 | } |
| 178 | |
| 179 | fs.CapacityUsed = fs.Capacity - fs.Remaining |
| 180 | fs.CapacityUsedNonDFS = fs.CapacityUsed - fs.DfsUsed |
| 181 | |
| 182 | mx.FSDatasetState = &fs |
| 183 | return nil |
| 184 | } |
| 185 | |
| 186 | func (c *Collector) collectDataNodeActivity(mx *metrics, raw rawJMX) error { |
| 187 | v := raw.findDataNodeActivity() |
| 188 | if v == nil { |
| 189 | return nil |
| 190 | } |
| 191 | |
| 192 | var dna dataNodeActivityMetrics |
| 193 | err := writeJSONTo(&dna, v) |
| 194 | if err != nil { |
| 195 | return err |
| 196 | } |
| 197 | |
| 198 | mx.DataNodeActivity = &dna |
| 199 | return nil |
| 200 | } |
| 201 | |
| 202 | func writeJSONTo(dst, src any) error { |
| 203 | b, err := json.Marshal(src) |
| 204 | if err != nil { |
| 205 | return err |
| 206 | } |
| 207 | return json.Unmarshal(b, dst) |
| 208 | } |