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88 lines
3.1 KiB
Go
88 lines
3.1 KiB
Go
package middleware
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import (
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"context"
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"strings"
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"github.com/grpc-ecosystem/grpc-gateway/runtime"
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"go.opentelemetry.io/otel/attribute"
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"google.golang.org/grpc"
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"google.golang.org/grpc/status"
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_ "github.com/caos/zitadel/internal/statik"
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"github.com/caos/zitadel/internal/telemetry/metrics"
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)
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const (
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GrpcMethod = "grpc_method"
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ReturnCode = "return_code"
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GrpcRequestCounter = "grpc.server.request_counter"
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GrpcRequestCounterDescription = "Grpc request counter"
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TotalGrpcRequestCounter = "grpc.server.total_request_counter"
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TotalGrpcRequestCounterDescription = "Total grpc request counter"
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GrpcStatusCodeCounter = "grpc.server.grpc_status_code"
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GrpcStatusCodeCounterDescription = "Grpc status code counter"
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)
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func MetricsHandler(metricTypes []metrics.MetricType, ignoredMethodSuffixes ...string) grpc.UnaryServerInterceptor {
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return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
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return RegisterMetrics(ctx, req, info, handler, metricTypes, ignoredMethodSuffixes...)
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}
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}
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func RegisterMetrics(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler, metricTypes []metrics.MetricType, ignoredMethodSuffixes ...string) (_ interface{}, err error) {
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if len(metricTypes) == 0 {
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return handler(ctx, req)
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}
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for _, ignore := range ignoredMethodSuffixes {
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if strings.HasSuffix(info.FullMethod, ignore) {
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return handler(ctx, req)
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}
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}
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resp, err := handler(ctx, req)
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if containsMetricsMethod(metrics.MetricTypeRequestCount, metricTypes) {
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RegisterGrpcRequestCounter(ctx, info)
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}
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if containsMetricsMethod(metrics.MetricTypeTotalCount, metricTypes) {
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RegisterGrpcTotalRequestCounter(ctx)
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}
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if containsMetricsMethod(metrics.MetricTypeStatusCode, metricTypes) {
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RegisterGrpcRequestCodeCounter(ctx, info, err)
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}
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return resp, err
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}
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func RegisterGrpcRequestCounter(ctx context.Context, info *grpc.UnaryServerInfo) {
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var labels = map[string]attribute.Value{
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GrpcMethod: attribute.StringValue(info.FullMethod),
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}
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metrics.RegisterCounter(GrpcRequestCounter, GrpcRequestCounterDescription)
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metrics.AddCount(ctx, GrpcRequestCounter, 1, labels)
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}
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func RegisterGrpcTotalRequestCounter(ctx context.Context) {
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metrics.RegisterCounter(TotalGrpcRequestCounter, TotalGrpcRequestCounterDescription)
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metrics.AddCount(ctx, TotalGrpcRequestCounter, 1, nil)
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}
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func RegisterGrpcRequestCodeCounter(ctx context.Context, info *grpc.UnaryServerInfo, err error) {
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statusCode := status.Code(err)
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var labels = map[string]attribute.Value{
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GrpcMethod: attribute.StringValue(info.FullMethod),
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ReturnCode: attribute.IntValue(runtime.HTTPStatusFromCode(statusCode)),
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}
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metrics.RegisterCounter(GrpcStatusCodeCounter, GrpcStatusCodeCounterDescription)
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metrics.AddCount(ctx, GrpcStatusCodeCounter, 1, labels)
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}
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func containsMetricsMethod(metricType metrics.MetricType, metricTypes []metrics.MetricType) bool {
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for _, m := range metricTypes {
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if m == metricType {
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return true
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}
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}
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return false
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}
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