| 1 | package hdfs |
| 2 | |
| 3 | import ( |
| 4 | "encoding/json" |
| 5 | "strings" |
| 6 | ) |
| 7 | |
| 8 | type ( |
| 9 | rawData map[string]json.RawMessage |
| 10 | rawJMX struct { |
| 11 | Beans []rawData |
| 12 | } |
| 13 | ) |
| 14 | |
| 15 | func (r rawJMX) isEmpty() bool { |
| 16 | return len(r.Beans) == 0 |
| 17 | } |
| 18 | |
| 19 | func (r rawJMX) find(f func(rawData) bool) rawData { |
| 20 | for _, v := range r.Beans { |
| 21 | if f(v) { |
| 22 | return v |
| 23 | } |
| 24 | } |
| 25 | return nil |
| 26 | } |
| 27 | |
| 28 | func (r rawJMX) findJvm() rawData { |
| 29 | f := func(data rawData) bool { return string(data["modelerType"]) == "\"JvmMetrics\"" } |
| 30 | return r.find(f) |
| 31 | } |
| 32 | |
| 33 | func (r rawJMX) findRPCActivity() rawData { |
| 34 | f := func(data rawData) bool { return strings.HasPrefix(string(data["modelerType"]), "\"RpcActivityForPort") } |
| 35 | return r.find(f) |
| 36 | } |
| 37 | |
| 38 | func (r rawJMX) findFSNameSystem() rawData { |
| 39 | f := func(data rawData) bool { return string(data["modelerType"]) == "\"FSNamesystem\"" } |
| 40 | return r.find(f) |
| 41 | } |
| 42 | |
| 43 | func (r rawJMX) findFSDatasetState() rawData { |
| 44 | f := func(data rawData) bool { return string(data["modelerType"]) == "\"FSDatasetState\"" } |
| 45 | return r.find(f) |
| 46 | } |
| 47 | |
| 48 | func (r rawJMX) findDataNodeActivity() rawData { |
| 49 | f := func(data rawData) bool { return strings.HasPrefix(string(data["modelerType"]), "\"DataNodeActivity") } |
| 50 | return r.find(f) |
| 51 | } |