Fix build against GopherJS (#897)

* Fix build against GopherJS

When building against GopherJS, ThreadCreateProfile and Getpid are not
available.

Return 1 to shim the functions.

Signed-off-by: Christian Stewart <christian@paral.in>

* Fix formatting

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

* Fix linter issue

Move build tags for licence header checks

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

Co-authored-by: Kemal Akkoyun <kakkoyun@gmail.com>
This commit is contained in:
Christian Stewart 2022-08-05 07:28:54 -07:00 committed by GitHub
parent 1638da9ae4
commit d44fbbefdd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 128 additions and 6 deletions

26
prometheus/get_pid.go Normal file
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@ -0,0 +1,26 @@
// Copyright 2015 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 !js || wasm
// +build !js wasm
package prometheus
import "os"
func getPIDFn() func() (int, error) {
pid := os.Getpid()
return func() (int, error) {
return pid, nil
}
}

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@ -0,0 +1,23 @@
// Copyright 2015 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 js && !wasm
// +build js,!wasm
package prometheus
func getPIDFn() func() (int, error) {
return func() (int, error) {
return 1, nil
}
}

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@ -246,8 +246,9 @@ func (c *baseGoCollector) Describe(ch chan<- *Desc) {
// Collect returns the current state of all metrics of the collector. // Collect returns the current state of all metrics of the collector.
func (c *baseGoCollector) Collect(ch chan<- Metric) { func (c *baseGoCollector) Collect(ch chan<- Metric) {
ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine())) ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine()))
n, _ := runtime.ThreadCreateProfile(nil)
ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, float64(n)) n := getRuntimeNumThreads()
ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, n)
var stats debug.GCStats var stats debug.GCStats
stats.PauseQuantiles = make([]time.Duration, 5) stats.PauseQuantiles = make([]time.Duration, 5)

25
prometheus/num_threads.go Normal file
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@ -0,0 +1,25 @@
// Copyright 2018 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 !js || wasm
// +build !js wasm
package prometheus
import "runtime"
// getRuntimeNumThreads returns the number of open OS threads.
func getRuntimeNumThreads() float64 {
n, _ := runtime.ThreadCreateProfile(nil)
return float64(n)
}

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@ -0,0 +1,22 @@
// Copyright 2018 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 js && !wasm
// +build js,!wasm
package prometheus
// getRuntimeNumThreads returns the number of open OS threads.
func getRuntimeNumThreads() float64 {
return 1
}

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@ -103,8 +103,7 @@ func NewProcessCollector(opts ProcessCollectorOpts) Collector {
} }
if opts.PidFn == nil { if opts.PidFn == nil {
pid := os.Getpid() c.pidFn = getPIDFn()
c.pidFn = func() (int, error) { return pid, nil }
} else { } else {
c.pidFn = opts.PidFn c.pidFn = opts.PidFn
} }

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@ -0,0 +1,26 @@
// 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.
//go:build js
// +build js
package prometheus
func canCollectProcess() bool {
return false
}
func (c *processCollector) processCollect(ch chan<- Metric) {
// noop on this platform
return
}

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@ -11,8 +11,8 @@
// See the License for the specific language governing permissions and // See the License for the specific language governing permissions and
// limitations under the License. // limitations under the License.
//go:build !windows //go:build !windows && !js
// +build !windows // +build !windows,!js
package prometheus package prometheus