| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| package envoyfilter |
| |
| import ( |
| "sync" |
| ) |
| |
| import ( |
| "istio.io/pkg/monitoring" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pilot/pkg/features" |
| ) |
| |
| type Result string |
| |
| const ( |
| Error Result = "error" |
| Applied Result = "applied" |
| ) |
| |
| type PatchType string |
| |
| const ( |
| Cluster PatchType = "cluster" |
| Listener PatchType = "listener" |
| FilterChain PatchType = "filterchain" |
| NetworkFilter PatchType = "networkfilter" |
| // nolint |
| HttpFilter PatchType = "httpfilter" |
| Route PatchType = "route" |
| VirtualHost PatchType = "vhost" |
| Bootstrap PatchType = "bootstrap" |
| ) |
| |
| var ( |
| patchType = monitoring.MustCreateLabel("patch") |
| resultType = monitoring.MustCreateLabel("result") |
| nameType = monitoring.MustCreateLabel("name") |
| |
| envoyFilterStatus = monitoring.NewGauge( |
| "pilot_envoy_filter_status", |
| "Status of Envoy filters whether it was applied or errored.", |
| monitoring.WithLabels(nameType, patchType, resultType), |
| ) |
| ) |
| |
| var ( |
| envoyFilterStatusMap map[string]map[string]bool // Map of Envoy filter name, patch and status. |
| envoyFilterMutex sync.RWMutex |
| ) |
| |
| func init() { |
| if features.EnableEnvoyFilterMetrics { |
| monitoring.MustRegister(envoyFilterStatus) |
| envoyFilterStatusMap = make(map[string]map[string]bool) |
| } |
| } |
| |
| // IncrementEnvoyFilterMetric increments filter metric. |
| func IncrementEnvoyFilterMetric(name string, pt PatchType, applied bool) { |
| if !features.EnableEnvoyFilterMetrics { |
| return |
| } |
| envoyFilterMutex.Lock() |
| defer envoyFilterMutex.Unlock() |
| if _, exists := envoyFilterStatusMap[name]; !exists { |
| envoyFilterStatusMap[name] = make(map[string]bool) |
| } |
| if applied { |
| envoyFilterStatusMap[name][string(pt)] = true |
| } |
| } |
| |
| // IncrementEnvoyFilterErrorMetric increments filter metric for errors. |
| func IncrementEnvoyFilterErrorMetric(pt PatchType) { |
| if !features.EnableEnvoyFilterMetrics { |
| return |
| } |
| envoyFilterStatus.With(patchType.Value(string(pt))).With(resultType.Value(string(Error))).Record(1) |
| } |
| |
| func RecordMetrics() { |
| if !features.EnableEnvoyFilterMetrics { |
| return |
| } |
| envoyFilterMutex.RLock() |
| defer envoyFilterMutex.RUnlock() |
| for name, pmap := range envoyFilterStatusMap { |
| for pt, applied := range pmap { |
| if applied { |
| envoyFilterStatus.With(nameType.Value(name)).With(patchType.Value(pt)). |
| With(resultType.Value(string(Applied))).Record(1) |
| } else { |
| envoyFilterStatus.With(nameType.Value(name)).With(patchType.Value(pt)). |
| With(resultType.Value(string(Applied))).Record(0) |
| } |
| } |
| } |
| envoyFilterStatusMap = make(map[string]map[string]bool) |
| } |