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// Copyright 2023 The Prometheus 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.
//go:build !noxfrm
// +build !noxfrm
package collector
import (
"fmt"
"log/slog"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/procfs"
)
type xfrmCollector struct {
fs procfs.FS
logger *slog.Logger
}
func init() {
registerCollector("xfrm", defaultDisabled, NewXfrmCollector)
}
// NewXfrmCollector returns a new Collector exposing XFRM stats.
func NewXfrmCollector(logger *slog.Logger) (Collector, error) {
fs, err := procfs.NewFS(*procPath)
if err != nil {
return nil, fmt.Errorf("failed to open procfs: %w", err)
}
return &xfrmCollector{
fs: fs,
logger: logger,
}, nil
}
var (
xfrmInErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_error_packets_total"),
"All errors not matched by other",
nil, nil,
)
xfrmInBufferErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_buffer_error_packets_total"),
"No buffer is left",
nil, nil,
)
xfrmInHdrErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_hdr_error_packets_total"),
"Header error",
nil, nil,
)
xfrmInNoStatesDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_no_states_packets_total"),
"No state is found i.e. Either inbound SPI, address, or IPsec protocol at SA is wrong",
nil, nil,
)
xfrmInStateProtoErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_proto_error_packets_total"),
"Transformation protocol specific error e.g. SA key is wrong",
nil, nil,
)
xfrmInStateModeErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_mode_error_packets_total"),
"Transformation mode specific error",
nil, nil,
)
xfrmInStateSeqErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_seq_error_packets_total"),
"Sequence error i.e. Sequence number is out of window",
nil, nil,
)
xfrmInStateExpiredDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_expired_packets_total"),
"State is expired",
nil, nil,
)
xfrmInStateMismatchDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_mismatch_packets_total"),
"State has mismatch option e.g. UDP encapsulation type is mismatch",
nil, nil,
)
xfrmInStateInvalidDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_state_invalid_packets_total"),
"State is invalid",
nil, nil,
)
xfrmInTmplMismatchDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_tmpl_mismatch_packets_total"),
"No matching template for states e.g. Inbound SAs are correct but SP rule is wrong",
nil, nil,
)
xfrmInNoPolsDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_no_pols_packets_total"),
"No policy is found for states e.g. Inbound SAs are correct but no SP is found",
nil, nil,
)
xfrmInPolBlockDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_pol_block_packets_total"),
"Policy discards",
nil, nil,
)
xfrmInPolErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "in_pol_error_packets_total"),
"Policy error",
nil, nil,
)
xfrmOutErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_error_packets_total"),
"All errors which is not matched others",
nil, nil,
)
xfrmOutBundleGenErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_bundle_gen_error_packets_total"),
"Bundle generation error",
nil, nil,
)
xfrmOutBundleCheckErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_bundle_check_error_packets_total"),
"Bundle check error",
nil, nil,
)
xfrmOutNoStatesDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_no_states_packets_total"),
"No state is found",
nil, nil,
)
xfrmOutStateProtoErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_state_proto_error_packets_total"),
"Transformation protocol specific error",
nil, nil,
)
xfrmOutStateModeErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_state_mode_error_packets_total"),
"Transformation mode specific error",
nil, nil,
)
xfrmOutStateSeqErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_state_seq_error_packets_total"),
"Sequence error i.e. Sequence number overflow",
nil, nil,
)
xfrmOutStateExpiredDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_state_expired_packets_total"),
"State is expired",
nil, nil,
)
xfrmOutPolBlockDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_pol_block_packets_total"),
"Policy discards",
nil, nil,
)
xfrmOutPolDeadDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_pol_dead_packets_total"),
"Policy is dead",
nil, nil,
)
xfrmOutPolErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_pol_error_packets_total"),
"Policy error",
nil, nil,
)
xfrmFwdHdrErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "fwd_hdr_error_packets_total"),
"Forward routing of a packet is not allowed",
nil, nil,
)
xfrmOutStateInvalidDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "out_state_invalid_packets_total"),
"State is invalid, perhaps expired",
nil, nil,
)
xfrmAcquireErrorDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "xfrm", "acquire_error_packets_total"),
"State hasn’t been fully acquired before use",
nil, nil,
)
)
func (c *xfrmCollector) Update(ch chan<- prometheus.Metric) error {
stat, err := c.fs.NewXfrmStat()
if err != nil {
return err
}
ch <- prometheus.MustNewConstMetric(xfrmInErrorDesc, prometheus.CounterValue, float64(stat.XfrmInError))
ch <- prometheus.MustNewConstMetric(xfrmInBufferErrorDesc, prometheus.CounterValue, float64(stat.XfrmInBufferError))
ch <- prometheus.MustNewConstMetric(xfrmInHdrErrorDesc, prometheus.CounterValue, float64(stat.XfrmInHdrError))
ch <- prometheus.MustNewConstMetric(xfrmInNoStatesDesc, prometheus.CounterValue, float64(stat.XfrmInNoStates))
ch <- prometheus.MustNewConstMetric(xfrmInStateProtoErrorDesc, prometheus.CounterValue, float64(stat.XfrmInStateProtoError))
ch <- prometheus.MustNewConstMetric(xfrmInStateModeErrorDesc, prometheus.CounterValue, float64(stat.XfrmInStateModeError))
ch <- prometheus.MustNewConstMetric(xfrmInStateSeqErrorDesc, prometheus.CounterValue, float64(stat.XfrmInStateSeqError))
ch <- prometheus.MustNewConstMetric(xfrmInStateExpiredDesc, prometheus.CounterValue, float64(stat.XfrmInStateExpired))
ch <- prometheus.MustNewConstMetric(xfrmInStateMismatchDesc, prometheus.CounterValue, float64(stat.XfrmInStateMismatch))
ch <- prometheus.MustNewConstMetric(xfrmInStateInvalidDesc, prometheus.CounterValue, float64(stat.XfrmInStateInvalid))
ch <- prometheus.MustNewConstMetric(xfrmInTmplMismatchDesc, prometheus.CounterValue, float64(stat.XfrmInTmplMismatch))
ch <- prometheus.MustNewConstMetric(xfrmInNoPolsDesc, prometheus.CounterValue, float64(stat.XfrmInNoPols))
ch <- prometheus.MustNewConstMetric(xfrmInPolBlockDesc, prometheus.CounterValue, float64(stat.XfrmInPolBlock))
ch <- prometheus.MustNewConstMetric(xfrmInPolErrorDesc, prometheus.CounterValue, float64(stat.XfrmInPolError))
ch <- prometheus.MustNewConstMetric(xfrmOutErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutError))
ch <- prometheus.MustNewConstMetric(xfrmOutBundleGenErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutBundleGenError))
ch <- prometheus.MustNewConstMetric(xfrmOutBundleCheckErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutBundleCheckError))
ch <- prometheus.MustNewConstMetric(xfrmOutNoStatesDesc, prometheus.CounterValue, float64(stat.XfrmOutNoStates))
ch <- prometheus.MustNewConstMetric(xfrmOutStateProtoErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutStateProtoError))
ch <- prometheus.MustNewConstMetric(xfrmOutStateModeErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutStateModeError))
ch <- prometheus.MustNewConstMetric(xfrmOutStateSeqErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutStateSeqError))
ch <- prometheus.MustNewConstMetric(xfrmOutStateExpiredDesc, prometheus.CounterValue, float64(stat.XfrmOutStateExpired))
ch <- prometheus.MustNewConstMetric(xfrmOutPolBlockDesc, prometheus.CounterValue, float64(stat.XfrmOutPolBlock))
ch <- prometheus.MustNewConstMetric(xfrmOutPolDeadDesc, prometheus.CounterValue, float64(stat.XfrmOutPolDead))
ch <- prometheus.MustNewConstMetric(xfrmOutPolErrorDesc, prometheus.CounterValue, float64(stat.XfrmOutPolError))
ch <- prometheus.MustNewConstMetric(xfrmFwdHdrErrorDesc, prometheus.CounterValue, float64(stat.XfrmFwdHdrError))
ch <- prometheus.MustNewConstMetric(xfrmOutStateInvalidDesc, prometheus.CounterValue, float64(stat.XfrmOutStateInvalid))
ch <- prometheus.MustNewConstMetric(xfrmAcquireErrorDesc, prometheus.CounterValue, float64(stat.XfrmAcquireError))
return err
}
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