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collector: Implement uname collector for FreeBSD (prometheus#1239)
* collector: Implement uname collector for FreeBSD Signed-off-by: David O'Rourke <david.orourke@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| // Copyright 2019 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. | ||
|
|
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| // +build freebsd linux | ||
| // +build !nouname | ||
|
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| package collector | ||
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| import ( | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
|
|
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| var unameDesc = prometheus.NewDesc( | ||
| prometheus.BuildFQName(namespace, "uname", "info"), | ||
| "Labeled system information as provided by the uname system call.", | ||
| []string{ | ||
| "sysname", | ||
| "release", | ||
| "version", | ||
| "machine", | ||
| "nodename", | ||
| "domainname", | ||
| }, | ||
| nil, | ||
| ) | ||
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| type unameCollector struct{} | ||
| type uname struct { | ||
| SysName string | ||
| Release string | ||
| Version string | ||
| Machine string | ||
| NodeName string | ||
| DomainName string | ||
| } | ||
|
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| func init() { | ||
| registerCollector("uname", defaultEnabled, newUnameCollector) | ||
| } | ||
|
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| // NewUnameCollector returns new unameCollector. | ||
| func newUnameCollector() (Collector, error) { | ||
| return &unameCollector{}, nil | ||
| } | ||
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| func (c unameCollector) Update(ch chan<- prometheus.Metric) error { | ||
| uname, err := getUname() | ||
| if err != nil { | ||
| return err | ||
| } | ||
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| ch <- prometheus.MustNewConstMetric(unameDesc, prometheus.GaugeValue, 1, | ||
| uname.SysName, | ||
| uname.Release, | ||
| uname.Version, | ||
| uname.Machine, | ||
| uname.NodeName, | ||
| uname.DomainName, | ||
| ) | ||
|
|
||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // Copyright 2019 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. | ||
|
|
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| // +build !nouname | ||
|
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| package collector | ||
|
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| import ( | ||
| "bytes" | ||
| "strings" | ||
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| "golang.org/x/sys/unix" | ||
| ) | ||
|
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| func getUname() (uname, error) { | ||
| var utsname unix.Utsname | ||
| if err := unix.Uname(&utsname); err != nil { | ||
| return uname{}, err | ||
| } | ||
|
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| // We do a little bit of work here to emulate what happens in the Linux | ||
| // uname calls since FreeBSD uname doesn't have a Domainname. | ||
| nodename := string(utsname.Nodename[:bytes.IndexByte(utsname.Nodename[:], 0)]) | ||
| split := strings.SplitN(nodename, ".", 2) | ||
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| // We'll always have at least a single element in the array. We assume this | ||
| // is the hostname. | ||
| hostname := split[0] | ||
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| // If we have more than one element, we assume this is the domainname. | ||
| // Otherwise leave it to "(none)" like Linux. | ||
| domainname := "(none)" | ||
| if len(split) > 1 { | ||
| domainname = split[1] | ||
| } | ||
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| output := uname{ | ||
| SysName: string(utsname.Sysname[:bytes.IndexByte(utsname.Sysname[:], 0)]), | ||
| Release: string(utsname.Release[:bytes.IndexByte(utsname.Release[:], 0)]), | ||
| Version: string(utsname.Version[:bytes.IndexByte(utsname.Version[:], 0)]), | ||
| Machine: string(utsname.Machine[:bytes.IndexByte(utsname.Machine[:], 0)]), | ||
| NodeName: hostname, | ||
| DomainName: domainname, | ||
| } | ||
|
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||
| return output, nil | ||
| } |
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