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memory: fix panics if metrics does not exists (#1960)

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Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Jan-Otto Kröpke
2025-04-04 23:21:26 +02:00
committed by GitHub
parent 88c929ac6f
commit ecc805f0fa
39 changed files with 565 additions and 364 deletions
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152
internal/collector/dhcp/dhcp.go
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@@ -148,12 +148,79 @@ func (c *Collector) Close() error {
func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
var err error
if slices.Contains(c.config.CollectorsEnabled, subCollectorServerMetrics) {
c.perfDataCollector, err = pdh.NewCollector[perfDataCounterValues](pdh.CounterTypeRaw, "DHCP Server", nil)
if err != nil {
return fmt.Errorf("failed to create DHCP Server collector: %w", err)
}
if slices.Contains(c.config.CollectorsEnabled, subCollectorScopeMetrics) {
c.scopeInfo = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_info"),
"DHCP Scope information",
[]string{"name", "superscope_name", "superscope_id", "scope"},
nil,
)
c.scopeState = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_state"),
"DHCP Scope state",
[]string{"scope", "state"},
nil,
)
c.scopeAddressesFreeTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free"),
"DHCP Scope free addresses",
[]string{"scope"},
nil,
)
c.scopeAddressesFreeOnPartnerServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free_on_partner_server"),
"DHCP Scope free addresses on partner server",
[]string{"scope"},
nil,
)
c.scopeAddressesFreeOnThisServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free_on_this_server"),
"DHCP Scope free addresses on this server",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use"),
"DHCP Scope addresses in use",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseOnPartnerServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use_on_partner_server"),
"DHCP Scope addresses in use on partner server",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseOnThisServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use_on_this_server"),
"DHCP Scope addresses in use on this server",
[]string{"scope"},
nil,
)
c.scopePendingOffersTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_pending_offers"),
"DHCP Scope pending offers",
[]string{"scope"},
nil,
)
c.scopeReservedAddressTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_reserved_address"),
"DHCP Scope reserved addresses",
[]string{"scope"},
nil,
)
}
if slices.Contains(c.config.CollectorsEnabled, subCollectorServerMetrics) {
c.packetsReceivedTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "packets_received_total"),
"Total number of packets received by the DHCP server (PacketsReceivedTotal)",
@@ -304,78 +371,11 @@ func (c *Collector) Build(_ *slog.Logger, _ *mi.Session) error {
nil,
nil,
)
}
if slices.Contains(c.config.CollectorsEnabled, subCollectorScopeMetrics) {
c.scopeInfo = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_info"),
"DHCP Scope information",
[]string{"name", "superscope_name", "superscope_id", "scope"},
nil,
)
c.scopeState = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_state"),
"DHCP Scope state",
[]string{"scope", "state"},
nil,
)
c.scopeAddressesFreeTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free"),
"DHCP Scope free addresses",
[]string{"scope"},
nil,
)
c.scopeAddressesFreeOnPartnerServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free_on_partner_server"),
"DHCP Scope free addresses on partner server",
[]string{"scope"},
nil,
)
c.scopeAddressesFreeOnThisServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_free_on_this_server"),
"DHCP Scope free addresses on this server",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use"),
"DHCP Scope addresses in use",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseOnPartnerServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use_on_partner_server"),
"DHCP Scope addresses in use on partner server",
[]string{"scope"},
nil,
)
c.scopeAddressesInUseOnThisServerTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_addresses_in_use_on_this_server"),
"DHCP Scope addresses in use on this server",
[]string{"scope"},
nil,
)
c.scopePendingOffersTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_pending_offers"),
"DHCP Scope pending offers",
[]string{"scope"},
nil,
)
c.scopeReservedAddressTotal = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "scope_reserved_address"),
"DHCP Scope reserved addresses",
[]string{"scope"},
nil,
)
c.perfDataCollector, err = pdh.NewCollector[perfDataCounterValues](pdh.CounterTypeRaw, "DHCP Server", nil)
if err != nil {
return fmt.Errorf("failed to create DHCP Server collector: %w", err)
}
}
return nil