61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
package goutil
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import (
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"context"
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"encoding/json"
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"fmt"
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"os"
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"os/exec"
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"strings"
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"time"
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"github.com/golangci/golangci-lint/pkg/logutils"
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)
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type EnvKey string
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const (
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EnvGoCache EnvKey = "GOCACHE"
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EnvGoRoot EnvKey = "GOROOT"
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)
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type Env struct {
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vars map[string]string
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log logutils.Log
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debugf logutils.DebugFunc
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}
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func NewEnv(log logutils.Log) *Env {
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return &Env{
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vars: map[string]string{},
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log: log,
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debugf: logutils.Debug(logutils.DebugKeyEnv),
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}
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}
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func (e *Env) Discover(ctx context.Context) error {
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startedAt := time.Now()
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args := []string{"env", "-json"}
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args = append(args, string(EnvGoCache), string(EnvGoRoot))
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out, err := exec.CommandContext(ctx, "go", args...).Output()
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if err != nil {
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return fmt.Errorf("failed to run 'go env': %w", err)
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}
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if err = json.Unmarshal(out, &e.vars); err != nil {
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return fmt.Errorf("failed to parse 'go %s' json: %w", strings.Join(args, " "), err)
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}
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e.debugf("Read go env for %s: %#v", time.Since(startedAt), e.vars)
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return nil
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}
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func (e Env) Get(k EnvKey) string {
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envValue := os.Getenv(string(k))
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if envValue != "" {
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return envValue
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}
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return e.vars[string(k)]
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}
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