150 lines
6.4 KiB
Go
150 lines
6.4 KiB
Go
// Copyright 2021 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build linux && !nofibrechannel
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// +build linux,!nofibrechannel
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package collector
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import (
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"fmt"
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"os"
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"github.com/go-kit/log"
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"github.com/go-kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/procfs/sysfs"
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)
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const maxUint64 = ^uint64(0)
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type fibrechannelCollector struct {
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fs sysfs.FS
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metricDescs map[string]*prometheus.Desc
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logger log.Logger
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subsystem string
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}
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func init() {
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registerCollector("fibrechannel", defaultEnabled, NewFibreChannelCollector)
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}
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// NewFibreChannelCollector returns a new Collector exposing FibreChannel stats.
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func NewFibreChannelCollector(logger log.Logger) (Collector, error) {
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var i fibrechannelCollector
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var err error
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i.fs, err = sysfs.NewFS(*sysPath)
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if err != nil {
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return nil, fmt.Errorf("failed to open sysfs: %w", err)
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}
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i.logger = logger
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// Detailed description for all metrics.
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descriptions := map[string]string{
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"dumped_frames_total": "Number of dumped frames",
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"loss_of_signal_total": "Number of times signal has been lost",
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"loss_of_sync_total": "Number of failures on either bit or transmission word boundaries",
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"rx_frames_total": "Number of frames received",
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"error_frames_total": "Number of errors in frames",
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"invalid_tx_words_total": "Number of invalid words transmitted by host port",
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"seconds_since_last_reset_total": "Number of seconds since last host port reset",
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"tx_words_total": "Number of words transmitted by host port",
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"invalid_crc_total": "Invalid Cyclic Redundancy Check count",
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"nos_total": "Number Not_Operational Primitive Sequence received by host port",
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"fcp_packet_aborts_total": "Number of aborted packets",
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"rx_words_total": "Number of words received by host port",
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"tx_frames_total": "Number of frames transmitted by host port",
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"link_failure_total": "Number of times the host port link has failed",
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"name": "Name of Fibre Channel HBA",
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"speed": "Current operating speed",
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"port_state": "Current port state",
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"port_type": "Port type, what the port is connected to",
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"symbolic_name": "Symoblic Name",
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"node_name": "Node Name as hexadecimal string",
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"port_id": "Port ID as string",
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"port_name": "Port Name as hexadecimal string",
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"fabric_name": "Fabric Name; 0 if PTP",
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"dev_loss_tmo": "Device Loss Timeout in seconds",
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"supported_classes": "The FC classes supported",
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"supported_speeds": "The FC speeds supported",
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}
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i.metricDescs = make(map[string]*prometheus.Desc)
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i.subsystem = "fibrechannel"
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for metricName, description := range descriptions {
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i.metricDescs[metricName] = prometheus.NewDesc(
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prometheus.BuildFQName(namespace, i.subsystem, metricName),
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description,
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[]string{"fc_host"},
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nil,
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)
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}
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return &i, nil
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}
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func (c *fibrechannelCollector) pushMetric(ch chan<- prometheus.Metric, name string, value uint64, host string, valueType prometheus.ValueType) {
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ch <- prometheus.MustNewConstMetric(c.metricDescs[name], valueType, float64(value), host)
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}
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func (c *fibrechannelCollector) pushCounter(ch chan<- prometheus.Metric, name string, value uint64, host string) {
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// Don't push counters that aren't implemented (a counter equal to maxUint64 is unimplemented by the HBA firmware)
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if value != maxUint64 {
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c.pushMetric(ch, name, value, host, prometheus.CounterValue)
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}
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}
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func (c *fibrechannelCollector) Update(ch chan<- prometheus.Metric) error {
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hosts, err := c.fs.FibreChannelClass()
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if err != nil {
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if os.IsNotExist(err) {
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level.Debug(c.logger).Log("msg", "fibrechannel statistics not found, skipping")
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return ErrNoData
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}
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return fmt.Errorf("error obtaining FibreChannel class info: %s", err)
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}
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for _, host := range hosts {
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infoDesc := prometheus.NewDesc(
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prometheus.BuildFQName(namespace, c.subsystem, "info"),
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"Non-numeric data from /sys/class/fc_host/<host>, value is always 1.",
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[]string{"fc_host", "speed", "port_state", "port_type", "port_id", "port_name", "fabric_name", "symbolic_name", "supported_classes", "supported_speeds", "dev_loss_tmo"},
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nil,
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)
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infoValue := 1.0
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// First push the Host values
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ch <- prometheus.MustNewConstMetric(infoDesc, prometheus.GaugeValue, infoValue, host.Name, host.Speed, host.PortState, host.PortType, host.PortID, host.PortName, host.FabricName, host.SymbolicName, host.SupportedClasses, host.SupportedSpeeds, host.DevLossTMO)
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// Then the counters
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c.pushCounter(ch, "dumped_frames_total", host.Counters.DumpedFrames, host.Name)
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c.pushCounter(ch, "error_frames_total", host.Counters.ErrorFrames, host.Name)
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c.pushCounter(ch, "invalid_crc_total", host.Counters.InvalidCRCCount, host.Name)
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c.pushCounter(ch, "rx_frames_total", host.Counters.RXFrames, host.Name)
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c.pushCounter(ch, "rx_words_total", host.Counters.RXWords, host.Name)
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c.pushCounter(ch, "tx_frames_total", host.Counters.TXFrames, host.Name)
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c.pushCounter(ch, "tx_words_total", host.Counters.TXWords, host.Name)
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c.pushCounter(ch, "seconds_since_last_reset_total", host.Counters.SecondsSinceLastReset, host.Name)
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c.pushCounter(ch, "invalid_tx_words_total", host.Counters.InvalidTXWordCount, host.Name)
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c.pushCounter(ch, "link_failure_total", host.Counters.LinkFailureCount, host.Name)
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c.pushCounter(ch, "loss_of_sync_total", host.Counters.LossOfSyncCount, host.Name)
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c.pushCounter(ch, "loss_of_signal_total", host.Counters.LossOfSignalCount, host.Name)
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c.pushCounter(ch, "nos_total", host.Counters.NosCount, host.Name)
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c.pushCounter(ch, "fcp_packet_aborts_total", host.Counters.FCPPacketAborts, host.Name)
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}
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return nil
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}
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