63 lines
2.5 KiB
Go
63 lines
2.5 KiB
Go
package grpc
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import (
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"git.frostfs.info/TrueCloudLab/frostfs-observability/metrics"
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grpcprom "github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus"
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"github.com/prometheus/client_golang/prometheus"
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dto "github.com/prometheus/client_model/go"
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"google.golang.org/grpc"
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)
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var serverMetrics = grpcprom.NewServerMetrics(
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grpcprom.WithServerHandlingTimeHistogram(
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grpcprom.WithHistogramBuckets(prometheus.DefBuckets),
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),
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)
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func init() {
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// Description copied from grpc-ecosystem:
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// https://github.com/grpc-ecosystem/go-grpc-middleware/blob/71d7422112b1d7fadd4b8bf12a6f33ba6d22e98e/providers/prometheus/server_metrics.go#L26
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descs := []metrics.Description{
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{
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Name: "grpc_server_started_total",
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Type: dto.MetricType_COUNTER.String(),
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Help: "Total number of RPCs started on the server.",
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VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
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},
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{
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Name: "grpc_server_handled_total",
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Type: dto.MetricType_COUNTER.String(),
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Help: "Total number of RPCs completed on the server, regardless of success or failure.",
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VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method", "grpc_code"},
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},
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{
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Name: "grpc_server_msg_received_total",
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Type: dto.MetricType_COUNTER.String(),
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Help: "Total number of RPC stream messages received on the server.",
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VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
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},
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{
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Name: "grpc_server_msg_sent_total",
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Type: dto.MetricType_COUNTER.String(),
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Help: "Total number of gRPC stream messages sent by the server.",
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VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
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},
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{
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Name: "grpc_server_handling_seconds",
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Type: dto.MetricType_HISTOGRAM.String(),
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Help: "Histogram of response latency (seconds) of gRPC that had been application-level handled by the server.",
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VariableLabels: []string{"grpc_type", "grpc_service", "grpc_method"},
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},
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}
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metrics.MustRegister(serverMetrics, descs...)
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}
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// NewUnaryServerInterceptor returns server interceptor to collect metrics from unary RPCs.
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func NewUnaryServerInterceptor() grpc.UnaryServerInterceptor {
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return serverMetrics.UnaryServerInterceptor()
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}
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// NewStreamServerInterceptor returns server interceptor to collect metrics from stream RPCs.
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func NewStreamServerInterceptor() grpc.StreamServerInterceptor {
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return serverMetrics.StreamServerInterceptor()
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}
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