diff options
Diffstat (limited to '')
-rw-r--r-- | src/go/collectors/go.d.plugin/modules/coredns/coredns.go | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/go/collectors/go.d.plugin/modules/coredns/coredns.go b/src/go/collectors/go.d.plugin/modules/coredns/coredns.go new file mode 100644 index 000000000..ec21860e3 --- /dev/null +++ b/src/go/collectors/go.d.plugin/modules/coredns/coredns.go @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +package coredns + +import ( + _ "embed" + "errors" + "time" + + "github.com/netdata/netdata/go/go.d.plugin/agent/module" + "github.com/netdata/netdata/go/go.d.plugin/pkg/matcher" + "github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus" + "github.com/netdata/netdata/go/go.d.plugin/pkg/web" + + "github.com/blang/semver/v4" +) + +//go:embed "config_schema.json" +var configSchema string + +func init() { + module.Register("coredns", module.Creator{ + JobConfigSchema: configSchema, + Create: func() module.Module { return New() }, + }) +} + +func New() *CoreDNS { + return &CoreDNS{ + Config: Config{ + HTTP: web.HTTP{ + Request: web.Request{ + URL: "http://127.0.0.1:9153/metrics", + }, + Client: web.Client{ + Timeout: web.Duration(time.Second), + }, + }, + }, + charts: summaryCharts.Copy(), + collectedServers: make(map[string]bool), + collectedZones: make(map[string]bool), + } +} + +type Config struct { + web.HTTP `yaml:",inline" json:""` + UpdateEvery int `yaml:"update_every" json:"update_every"` + PerServerStats matcher.SimpleExpr `yaml:"per_server_stats" json:"per_server_stats"` + PerZoneStats matcher.SimpleExpr `yaml:"per_zone_stats" json:"per_zone_stats"` +} + +type CoreDNS struct { + module.Base + Config `yaml:",inline" json:""` + + prom prometheus.Prometheus + + charts *Charts + + perServerMatcher matcher.Matcher + perZoneMatcher matcher.Matcher + collectedServers map[string]bool + collectedZones map[string]bool + skipVersionCheck bool + version *semver.Version + metricNames requestMetricsNames +} + +func (cd *CoreDNS) Configuration() any { + return cd.Config +} + +func (cd *CoreDNS) Init() error { + if err := cd.validateConfig(); err != nil { + cd.Errorf("config validation: %v", err) + return err + } + + sm, err := cd.initPerServerMatcher() + if err != nil { + cd.Error(err) + return err + } + if sm != nil { + cd.perServerMatcher = sm + } + + zm, err := cd.initPerZoneMatcher() + if err != nil { + cd.Error(err) + return err + } + if zm != nil { + cd.perZoneMatcher = zm + } + + prom, err := cd.initPrometheusClient() + if err != nil { + cd.Error(err) + return err + } + cd.prom = prom + + return nil +} + +func (cd *CoreDNS) Check() error { + mx, err := cd.collect() + if err != nil { + cd.Error(err) + return err + } + if len(mx) == 0 { + return errors.New("no metrics collected") + + } + return nil +} + +func (cd *CoreDNS) Charts() *Charts { + return cd.charts +} + +func (cd *CoreDNS) Collect() map[string]int64 { + mx, err := cd.collect() + + if err != nil { + cd.Error(err) + return nil + } + + return mx +} + +func (cd *CoreDNS) Cleanup() { + if cd.prom != nil && cd.prom.HTTPClient() != nil { + cd.prom.HTTPClient().CloseIdleConnections() + } +} |