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observability.go
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observability.go
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// Copyright © 2020 The Things Network Foundation, The Things Industries B.V.
//
// 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 redis
import (
"net"
"github.com/prometheus/client_golang/prometheus"
"go.thethings.network/lorawan-stack/v3/pkg/metrics"
)
var (
bytesRx = prometheus.NewCounterVec(
prometheus.CounterOpts{
Subsystem: "redis_client",
Name: "receive_bytes_total",
Help: "Total number of bytes received by the Redis client",
},
[]string{"remote_address"},
)
bytesTx = prometheus.NewCounterVec(
prometheus.CounterOpts{
Subsystem: "redis_client",
Name: "transmit_bytes_total",
Help: "Total number of bytes transmitted by the Redis client",
},
[]string{"remote_address"},
)
protosUnmarshaled = prometheus.NewCounter(
prometheus.CounterOpts{
Subsystem: "redis",
Name: "protos_unmarshaled_total",
Help: "Total number of protos unmarshaled by the Redis client",
},
)
protosMarshaled = prometheus.NewCounter(
prometheus.CounterOpts{
Subsystem: "redis",
Name: "protos_marshaled_total",
Help: "Total number of protos marshaled by the Redis client",
},
)
)
func init() {
metrics.MustRegister(
bytesRx,
bytesTx,
protosUnmarshaled,
protosMarshaled,
)
}
type observableConn struct {
addr string
net.Conn
}
func (c *observableConn) Read(b []byte) (n int, err error) {
n, err = c.Conn.Read(b)
bytesRx.WithLabelValues(c.addr).Add(float64(n))
return n, err
}
func (c *observableConn) Write(b []byte) (n int, err error) {
n, err = c.Conn.Write(b)
bytesTx.WithLabelValues(c.addr).Add(float64(n))
return n, err
}