client_golang/dagger/main.go

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// Copyright 2024 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.
// A minimal example of how to include Prometheus instrumentation.
package main
import (
"context"
"dagger/internal/dagger"
"strings"
"golang.org/x/sync/errgroup"
)
type ClientGolang struct {
Source *dagger.Directory // +private
}
func New(src *dagger.Directory) *ClientGolang {
return &ClientGolang{Source: src}
}
// runs `make` with the given arguments
func (m *ClientGolang) Make(
// +optional
args string,
// +default="1.20"
goVersion string,
// +optional
env []string,
) (string, error) {
return dag.Golang().
Base(goVersion).
Container().
WithMountedDirectory("/src", m.Source).
WithWorkdir("/src").
WithMountedCache("/go/bin", dag.CacheVolume("gobincache")).
WithExec([]string{"sh", "-c", "make " + args}).
Stdout(context.Background())
}
// runs `make` with the given arguments for all supported go versions
func (m *ClientGolang) MakeRun(
ctx context.Context,
// +optional,
args string,
) error {
c, err := m.Source.File("supported_go_versions.txt").Contents(ctx)
if err != nil {
return err
}
goVersions := strings.Split(c, "\n")
eg := new(errgroup.Group)
for _, version := range goVersions {
version := version
if len(version) > 0 {
eg.Go(func() error {
_, err := dag.Golang().
Base(version).
Container().
WithMountedDirectory("/src", m.Source).
WithWorkdir("/src").
WithMountedCache("/go/bin", dag.CacheVolume("gobincache")).
WithExec([]string{"sh", "-c", "make " + args}).Sync(ctx)
return err
})
}
}
return eg.Wait()
}