feat: Tolerate collector failures (#1769)

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

internal/collector/exchange/exchange.go

@@ -47,6 +47,7 @@ type Config struct {
 	CollectorsEnabled []string `yaml:"collectors_enabled"`
 }
 
+//nolint:gochecknoglobals
 var ConfigDefaults = Config{
 	CollectorsEnabled: []string{
 		adAccessProcesses,

internal/collector/exchange/exchange_active_sync.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -73,7 +72,7 @@ func (c *Collector) collectActiveSync(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange ActiveSync returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange ActiveSync metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_ad_access_processes.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -89,7 +88,7 @@ func (c *Collector) collectADAccessProcesses(ch chan<- prometheus.Metric) error
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange ADAccess Processes returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange ADAccess Processes metrics: %w", types.ErrNoData)
 	}
 
 	labelUseCount := make(map[string]int)

internal/collector/exchange/exchange_autodiscover.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -53,7 +52,7 @@ func (c *Collector) collectAutoDiscover(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange Autodiscover returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange Autodiscover metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_availability_service.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -53,7 +52,7 @@ func (c *Collector) collectAvailabilityService(ch chan<- prometheus.Metric) erro
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange Availability Service returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange Availability Service metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_http_proxy.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -97,7 +96,7 @@ func (c *Collector) collectHTTPProxy(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange HttpProxy Service returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange HttpProxy Service metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/exchange/exchange_mapi_http_emsmdb.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -57,7 +56,7 @@ func (c *Collector) collectMapiHttpEmsmdb(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange MapiHttp Emsmdb returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange MapiHttp Emsmdb metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_outlook_web_access.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -65,7 +64,7 @@ func (c *Collector) collectOWA(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange OWA returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange OWA metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_rpc_client_access.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -97,7 +96,7 @@ func (c *Collector) collectRPC(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange RpcClientAccess returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange RpcClientAccess metrics: %w", types.ErrNoData)
 	}
 
 	for _, data := range perfData {

internal/collector/exchange/exchange_transport_queues.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -201,7 +200,7 @@ func (c *Collector) collectTransportQueues(ch chan<- prometheus.Metric) error {
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchangeTransport Queues returned empty result set")
+		return fmt.Errorf("failed to collect MSExchangeTransport Queues metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {

internal/collector/exchange/exchange_workload_management.go

@@ -16,7 +16,6 @@
 package exchange
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/prometheus-community/windows_exporter/internal/perfdata"
@@ -89,7 +88,7 @@ func (c *Collector) collectWorkloadManagementWorkloads(ch chan<- prometheus.Metr
 	}
 
 	if len(perfData) == 0 {
-		return errors.New("perflib query for MSExchange WorkloadManagement Workloads returned empty result set")
+		return fmt.Errorf("failed to collect MSExchange WorkloadManagement Workloads metrics: %w", types.ErrNoData)
 	}
 
 	for name, data := range perfData {