616 lines
17 KiB
Go
616 lines
17 KiB
Go
//go:build windows
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package dhcp
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import (
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"errors"
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"fmt"
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"log/slog"
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"github.com/alecthomas/kingpin/v2"
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"github.com/prometheus-community/windows_exporter/internal/perfdata"
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"github.com/prometheus-community/windows_exporter/internal/perfdata/perftypes"
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v1 "github.com/prometheus-community/windows_exporter/internal/perfdata/v1"
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"github.com/prometheus-community/windows_exporter/internal/types"
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"github.com/prometheus-community/windows_exporter/internal/utils"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/yusufpapurcu/wmi"
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)
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const Name = "dhcp"
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type Config struct{}
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var ConfigDefaults = Config{}
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// A Collector is a Prometheus Collector perflib DHCP metrics.
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type Collector struct {
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config Config
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perfDataCollector perfdata.Collector
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acksTotal *prometheus.Desc
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activeQueueLength *prometheus.Desc
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conflictCheckQueueLength *prometheus.Desc
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declinesTotal *prometheus.Desc
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deniedDueToMatch *prometheus.Desc
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deniedDueToNonMatch *prometheus.Desc
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discoversTotal *prometheus.Desc
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duplicatesDroppedTotal *prometheus.Desc
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failoverBndAckReceivedTotal *prometheus.Desc
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failoverBndAckSentTotal *prometheus.Desc
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failoverBndUpdDropped *prometheus.Desc
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failoverBndUpdPendingOutboundQueue *prometheus.Desc
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failoverBndUpdReceivedTotal *prometheus.Desc
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failoverBndUpdSentTotal *prometheus.Desc
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failoverTransitionsCommunicationInterruptedState *prometheus.Desc
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failoverTransitionsPartnerDownState *prometheus.Desc
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failoverTransitionsRecoverState *prometheus.Desc
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informsTotal *prometheus.Desc
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nACKsTotal *prometheus.Desc
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offerQueueLength *prometheus.Desc
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offersTotal *prometheus.Desc
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packetsExpiredTotal *prometheus.Desc
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packetsReceivedTotal *prometheus.Desc
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releasesTotal *prometheus.Desc
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requestsTotal *prometheus.Desc
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}
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func New(config *Config) *Collector {
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if config == nil {
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config = &ConfigDefaults
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}
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c := &Collector{
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config: *config,
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}
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return c
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}
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func NewWithFlags(_ *kingpin.Application) *Collector {
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return &Collector{}
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}
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func (c *Collector) GetName() string {
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return Name
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}
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func (c *Collector) GetPerfCounter(_ *slog.Logger) ([]string, error) {
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if utils.PDHEnabled() {
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return []string{}, nil
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}
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return []string{"DHCP Server"}, nil
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}
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func (c *Collector) Close(_ *slog.Logger) error {
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return nil
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}
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func (c *Collector) Build(_ *slog.Logger, _ *wmi.Client) error {
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if utils.PDHEnabled() {
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counters := []string{
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acksTotal,
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activeQueueLength,
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conflictCheckQueueLength,
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declinesTotal,
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deniedDueToMatch,
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deniedDueToNonMatch,
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discoversTotal,
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duplicatesDroppedTotal,
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failoverBndAckReceivedTotal,
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failoverBndAckSentTotal,
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failoverBndUpdDropped,
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failoverBndUpdPendingOutboundQueue,
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failoverBndUpdReceivedTotal,
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failoverBndUpdSentTotal,
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failoverTransitionsCommunicationInterruptedState,
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failoverTransitionsPartnerDownState,
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failoverTransitionsRecoverState,
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informsTotal,
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nacksTotal,
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offerQueueLength,
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offersTotal,
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packetsExpiredTotal,
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packetsReceivedTotal,
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releasesTotal,
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requestsTotal,
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}
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var err error
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c.perfDataCollector, err = perfdata.NewCollector(perfdata.V1, "DHCP Server", perfdata.AllInstances, counters)
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if err != nil {
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return fmt.Errorf("failed to create DHCP Server collector: %w", err)
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}
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}
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c.packetsReceivedTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "packets_received_total"),
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"Total number of packets received by the DHCP server (PacketsReceivedTotal)",
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nil,
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nil,
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)
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c.duplicatesDroppedTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "duplicates_dropped_total"),
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"Total number of duplicate packets received by the DHCP server (DuplicatesDroppedTotal)",
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nil,
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nil,
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)
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c.packetsExpiredTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "packets_expired_total"),
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"Total number of packets expired in the DHCP server message queue (PacketsExpiredTotal)",
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nil,
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nil,
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)
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c.activeQueueLength = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "active_queue_length"),
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"Number of packets in the processing queue of the DHCP server (ActiveQueueLength)",
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nil,
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nil,
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)
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c.conflictCheckQueueLength = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "conflict_check_queue_length"),
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"Number of packets in the DHCP server queue waiting on conflict detection (ping). (ConflictCheckQueueLength)",
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nil,
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nil,
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)
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c.discoversTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "discovers_total"),
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"Total DHCP Discovers received by the DHCP server (DiscoversTotal)",
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nil,
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nil,
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)
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c.offersTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "offers_total"),
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"Total DHCP Offers sent by the DHCP server (OffersTotal)",
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nil,
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nil,
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)
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c.requestsTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "requests_total"),
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"Total DHCP Requests received by the DHCP server (RequestsTotal)",
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nil,
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nil,
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)
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c.informsTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "informs_total"),
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"Total DHCP Informs received by the DHCP server (InformsTotal)",
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nil,
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nil,
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)
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c.acksTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "acks_total"),
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"Total DHCP Acks sent by the DHCP server (AcksTotal)",
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nil,
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nil,
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)
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c.nACKsTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "nacks_total"),
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"Total DHCP Nacks sent by the DHCP server (NacksTotal)",
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nil,
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nil,
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)
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c.declinesTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "declines_total"),
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"Total DHCP Declines received by the DHCP server (DeclinesTotal)",
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nil,
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nil,
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)
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c.releasesTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "releases_total"),
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"Total DHCP Releases received by the DHCP server (ReleasesTotal)",
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nil,
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nil,
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)
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c.offerQueueLength = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "offer_queue_length"),
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"Number of packets in the offer queue of the DHCP server (OfferQueueLength)",
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nil,
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nil,
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)
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c.deniedDueToMatch = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "denied_due_to_match_total"),
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"Total number of DHCP requests denied, based on matches from the Deny list (DeniedDueToMatch)",
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nil,
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nil,
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)
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c.deniedDueToNonMatch = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "denied_due_to_nonmatch_total"),
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"Total number of DHCP requests denied, based on non-matches from the Allow list (DeniedDueToNonMatch)",
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nil,
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nil,
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)
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c.failoverBndUpdSentTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndupd_sent_total"),
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"Number of DHCP fail over Binding Update messages sent (FailoverBndupdSentTotal)",
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nil,
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nil,
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)
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c.failoverBndUpdReceivedTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndupd_received_total"),
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"Number of DHCP fail over Binding Update messages received (FailoverBndupdReceivedTotal)",
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nil,
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nil,
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)
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c.failoverBndAckSentTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndack_sent_total"),
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"Number of DHCP fail over Binding Ack messages sent (FailoverBndackSentTotal)",
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nil,
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nil,
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)
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c.failoverBndAckReceivedTotal = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndack_received_total"),
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"Number of DHCP fail over Binding Ack messages received (FailoverBndackReceivedTotal)",
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nil,
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nil,
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)
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c.failoverBndUpdPendingOutboundQueue = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndupd_pending_in_outbound_queue"),
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"Number of pending outbound DHCP fail over Binding Update messages (FailoverBndupdPendingOutboundQueue)",
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nil,
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nil,
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)
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c.failoverTransitionsCommunicationInterruptedState = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_transitions_communicationinterrupted_state_total"),
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"Total number of transitions into COMMUNICATION INTERRUPTED state (FailoverTransitionsCommunicationinterruptedState)",
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nil,
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nil,
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)
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c.failoverTransitionsPartnerDownState = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_transitions_partnerdown_state_total"),
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"Total number of transitions into PARTNER DOWN state (FailoverTransitionsPartnerdownState)",
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nil,
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nil,
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)
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c.failoverTransitionsRecoverState = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_transitions_recover_total"),
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"Total number of transitions into RECOVER state (FailoverTransitionsRecoverState)",
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nil,
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nil,
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)
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c.failoverBndUpdDropped = prometheus.NewDesc(
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prometheus.BuildFQName(types.Namespace, Name, "failover_bndupd_dropped_total"),
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"Total number of DHCP fail over Binding Updates dropped (FailoverBndupdDropped)",
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nil,
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nil,
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)
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return nil
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}
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func (c *Collector) Collect(ctx *types.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
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if utils.PDHEnabled() {
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return c.collectPDH(ch)
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}
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logger = logger.With(slog.String("collector", Name))
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return c.collect(ctx, logger, ch)
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}
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func (c *Collector) collect(ctx *types.ScrapeContext, logger *slog.Logger, ch chan<- prometheus.Metric) error {
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var dhcpPerfs []dhcpPerf
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if err := v1.UnmarshalObject(ctx.PerfObjects["DHCP Server"], &dhcpPerfs, logger); err != nil {
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return err
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}
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ch <- prometheus.MustNewConstMetric(
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c.packetsReceivedTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].PacketsReceivedTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.duplicatesDroppedTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].DuplicatesDroppedTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.packetsExpiredTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].PacketsExpiredTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.activeQueueLength,
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prometheus.GaugeValue,
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dhcpPerfs[0].ActiveQueueLength,
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)
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ch <- prometheus.MustNewConstMetric(
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c.conflictCheckQueueLength,
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prometheus.GaugeValue,
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dhcpPerfs[0].ConflictCheckQueueLength,
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)
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ch <- prometheus.MustNewConstMetric(
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c.discoversTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].DiscoversTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.offersTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].OffersTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.requestsTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].RequestsTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.informsTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].InformsTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.acksTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].AcksTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.nACKsTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].NacksTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.declinesTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].DeclinesTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.releasesTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].ReleasesTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.offerQueueLength,
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prometheus.GaugeValue,
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dhcpPerfs[0].OfferQueueLength,
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)
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ch <- prometheus.MustNewConstMetric(
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c.deniedDueToMatch,
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prometheus.CounterValue,
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dhcpPerfs[0].DeniedDueToMatch,
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)
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ch <- prometheus.MustNewConstMetric(
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c.deniedDueToNonMatch,
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prometheus.CounterValue,
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dhcpPerfs[0].DeniedDueToNonMatch,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndUpdSentTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverBndUpdSentTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndUpdReceivedTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverBndUpdReceivedTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndAckSentTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverBndAckSentTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndAckReceivedTotal,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverBndAckReceivedTotal,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndUpdPendingOutboundQueue,
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prometheus.GaugeValue,
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dhcpPerfs[0].FailoverBndUpdPendingOutboundQueue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverTransitionsCommunicationInterruptedState,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverTransitionsCommunicationInterruptedState,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverTransitionsPartnerDownState,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverTransitionsPartnerDownState,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverTransitionsRecoverState,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverTransitionsRecoverState,
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)
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ch <- prometheus.MustNewConstMetric(
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c.failoverBndUpdDropped,
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prometheus.CounterValue,
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dhcpPerfs[0].FailoverBndUpdDropped,
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)
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return nil
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}
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func (c *Collector) collectPDH(ch chan<- prometheus.Metric) error {
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perfData, err := c.perfDataCollector.Collect()
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if err != nil {
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return fmt.Errorf("failed to collect DHCP Server metrics: %w", err)
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}
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data, ok := perfData[perftypes.EmptyInstance]
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if !ok {
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return errors.New("perflib query for DHCP Server returned empty result set")
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}
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ch <- prometheus.MustNewConstMetric(
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c.packetsReceivedTotal,
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prometheus.CounterValue,
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data[packetsReceivedTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.duplicatesDroppedTotal,
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prometheus.CounterValue,
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data[duplicatesDroppedTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.packetsExpiredTotal,
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prometheus.CounterValue,
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data[packetsExpiredTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.activeQueueLength,
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prometheus.GaugeValue,
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data[activeQueueLength].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.conflictCheckQueueLength,
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prometheus.GaugeValue,
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data[conflictCheckQueueLength].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.discoversTotal,
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prometheus.CounterValue,
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data[discoversTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.offersTotal,
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prometheus.CounterValue,
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data[offersTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.requestsTotal,
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prometheus.CounterValue,
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data[requestsTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.informsTotal,
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prometheus.CounterValue,
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data[informsTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.acksTotal,
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prometheus.CounterValue,
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data[acksTotal].FirstValue,
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)
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ch <- prometheus.MustNewConstMetric(
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c.nACKsTotal,
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prometheus.CounterValue,
|
|
data[nacksTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.declinesTotal,
|
|
prometheus.CounterValue,
|
|
data[declinesTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.releasesTotal,
|
|
prometheus.CounterValue,
|
|
data[releasesTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.offerQueueLength,
|
|
prometheus.GaugeValue,
|
|
data[offerQueueLength].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.deniedDueToMatch,
|
|
prometheus.CounterValue,
|
|
data[deniedDueToMatch].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.deniedDueToNonMatch,
|
|
prometheus.CounterValue,
|
|
data[deniedDueToNonMatch].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndUpdSentTotal,
|
|
prometheus.CounterValue,
|
|
data[failoverBndUpdSentTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndUpdReceivedTotal,
|
|
prometheus.CounterValue,
|
|
data[failoverBndUpdReceivedTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndAckSentTotal,
|
|
prometheus.CounterValue,
|
|
data[failoverBndAckSentTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndAckReceivedTotal,
|
|
prometheus.CounterValue,
|
|
data[failoverBndAckReceivedTotal].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndUpdPendingOutboundQueue,
|
|
prometheus.GaugeValue,
|
|
data[failoverBndUpdPendingOutboundQueue].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverTransitionsCommunicationInterruptedState,
|
|
prometheus.CounterValue,
|
|
data[failoverTransitionsCommunicationInterruptedState].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverTransitionsPartnerDownState,
|
|
prometheus.CounterValue,
|
|
data[failoverTransitionsPartnerDownState].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverTransitionsRecoverState,
|
|
prometheus.CounterValue,
|
|
data[failoverTransitionsRecoverState].FirstValue,
|
|
)
|
|
|
|
ch <- prometheus.MustNewConstMetric(
|
|
c.failoverBndUpdDropped,
|
|
prometheus.CounterValue,
|
|
data[failoverBndUpdDropped].FirstValue,
|
|
)
|
|
|
|
return nil
|
|
}
|