| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package sd |
| 4 | |
| 5 | import ( |
| 6 | "encoding/json" |
| 7 | "fmt" |
| 8 | |
| 9 | "github.com/netdata/netdata/go/plugins/plugin/agent/discovery/sd/pipeline" |
| 10 | "github.com/netdata/netdata/go/plugins/plugin/framework/confgroup" |
| 11 | |
| 12 | "gopkg.in/yaml.v2" |
| 13 | ) |
| 14 | |
| 15 | // parseDyncfgPayload parses a dyncfg JSON payload into a runtime pipeline.Config. |
| 16 | // The dyncfg job name is authoritative and overrides any serialized payload name. |
| 17 | func parseDyncfgPayload(payload []byte, discovererType, name string, configDefaults confgroup.Registry, reg Registry, validate bool) (pipeline.Config, error) { |
| 18 | if reg == nil { |
| 19 | return pipeline.Config{}, fmt.Errorf("discoverer registry is not configured") |
| 20 | } |
| 21 | |
| 22 | var cfg pipeline.Config |
| 23 | if err := json.Unmarshal(payload, &cfg); err != nil { |
| 24 | return pipeline.Config{}, fmt.Errorf("unmarshal %s config: %w", discovererType, err) |
| 25 | } |
| 26 | |
| 27 | cfg.Name = name |
| 28 | cfg.ConfigDefaults = configDefaults |
| 29 | |
| 30 | // Validate that the config has the expected discoverer type |
| 31 | if got := cfg.Discoverer.Type(); got != discovererType { |
| 32 | if got == "" { |
| 33 | return pipeline.Config{}, fmt.Errorf("no discoverer configured, expected %q", discovererType) |
| 34 | } |
| 35 | return pipeline.Config{}, fmt.Errorf("config has discoverer type %q, expected %q", got, discovererType) |
| 36 | } |
| 37 | desc, ok := reg.Get(discovererType) |
| 38 | if !ok { |
| 39 | return pipeline.Config{}, fmt.Errorf("unknown discoverer type %q", discovererType) |
| 40 | } |
| 41 | if _, err := desc.ParseJSONConfig(cfg.Discoverer.Config); err != nil { |
| 42 | return pipeline.Config{}, fmt.Errorf("invalid %q discoverer config: %w", discovererType, err) |
| 43 | } |
| 44 | |
| 45 | if validate { |
| 46 | // Perform full semantic validation (name, discoverer, services rules) |
| 47 | if err := pipeline.ValidateConfig(cfg); err != nil { |
| 48 | return pipeline.Config{}, err |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | return cfg, nil |
| 53 | } |
| 54 | |
| 55 | // pipelineKey returns a unique key for a dyncfg pipeline. |
| 56 | // Format: "dyncfg:{discovererType}:{name}" |
| 57 | func pipelineKey(discovererType, name string) string { |
| 58 | return fmt.Sprintf("dyncfg:%s:%s", discovererType, name) |
| 59 | } |
| 60 | |
| 61 | // configToJSON converts stored config JSON to JSON via typed struct. |
| 62 | // This ensures consistent field ordering matching the struct definition. |
| 63 | func configToJSON(data []byte) ([]byte, error) { |
| 64 | var cfg pipeline.Config |
| 65 | if err := json.Unmarshal(data, &cfg); err != nil { |
| 66 | return nil, fmt.Errorf("unmarshal json: %w", err) |
| 67 | } |
| 68 | |
| 69 | bs, err := json.Marshal(cfg) |
| 70 | if err != nil { |
| 71 | return nil, fmt.Errorf("marshal json: %w", err) |
| 72 | } |
| 73 | |
| 74 | return bs, nil |
| 75 | } |
| 76 | |
| 77 | // userConfigFromPayload converts a JSON payload to YAML format for user editing. |
| 78 | // The returned YAML always uses jobName (or "test") as the top-level pipeline name. |
| 79 | func userConfigFromPayload(payload []byte, discovererType, jobName string) ([]byte, error) { |
| 80 | var cfg pipeline.Config |
| 81 | if err := json.Unmarshal(payload, &cfg); err != nil { |
| 82 | return nil, fmt.Errorf("unmarshal json: %w", err) |
| 83 | } |
| 84 | |
| 85 | cfg.Name = jobName |
| 86 | if cfg.Name == "" { |
| 87 | cfg.Name = "test" |
| 88 | } |
| 89 | |
| 90 | bs, err := yaml.Marshal(cfg) |
| 91 | if err != nil { |
| 92 | return nil, fmt.Errorf("marshal yaml: %w", err) |
| 93 | } |
| 94 | |
| 95 | return bs, nil |
| 96 | } |