istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/config/analysis/analyzers/telemetry/lightstep.go (about)

     1  // Copyright Istio Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //	http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package telemetry
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"istio.io/api/mesh/v1alpha1"
    21  	telemetryapi "istio.io/api/telemetry/v1alpha1"
    22  	"istio.io/istio/pkg/config"
    23  	"istio.io/istio/pkg/config/analysis"
    24  	"istio.io/istio/pkg/config/analysis/msg"
    25  	"istio.io/istio/pkg/config/resource"
    26  	"istio.io/istio/pkg/config/schema/gvk"
    27  	"istio.io/istio/pkg/util/sets"
    28  )
    29  
    30  type LightstepAnalyzer struct{}
    31  
    32  var _ analysis.Analyzer = &LightstepAnalyzer{}
    33  
    34  // Metadata implements Analyzer
    35  func (a *LightstepAnalyzer) Metadata() analysis.Metadata {
    36  	return analysis.Metadata{
    37  		Name:        "telemetry.LightstepAnalyzer",
    38  		Description: "Validates that lightstep provider is still used",
    39  		Inputs: []config.GroupVersionKind{
    40  			gvk.Telemetry,
    41  			gvk.MeshConfig,
    42  		},
    43  	}
    44  }
    45  
    46  // Analyze implements Analyzer
    47  func (a *LightstepAnalyzer) Analyze(c analysis.Context) {
    48  	meshConfig := fetchMeshConfig(c)
    49  	providerNames := sets.New[string]()
    50  	for _, prov := range meshConfig.ExtensionProviders {
    51  		switch prov.Provider.(type) {
    52  		case *v1alpha1.MeshConfig_ExtensionProvider_Lightstep:
    53  			providerNames.Insert(prov.Name)
    54  		}
    55  	}
    56  	if len(providerNames) == 0 {
    57  		return
    58  	}
    59  
    60  	c.ForEach(gvk.Telemetry, func(r *resource.Instance) bool {
    61  		telemetry := r.Message.(*telemetryapi.Telemetry)
    62  		for _, tracing := range telemetry.Tracing {
    63  			for _, p := range tracing.Providers {
    64  				if providerNames.Contains(p.Name) {
    65  					c.Report(gvk.Telemetry,
    66  						msg.NewDeprecated(r, fmt.Sprintf("The Lightstep provider %s is deprecated, please migrate to OpenTelemetry provider.", p.Name)))
    67  				}
    68  			}
    69  		}
    70  
    71  		return true
    72  	})
    73  }