69 lines
1.4 KiB
Go
69 lines
1.4 KiB
Go
package lg
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import (
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"context"
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"log"
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"os"
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"strings"
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"go.uber.org/multierr"
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)
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func Init(ctx context.Context, name string) (context.Context, func() error) {
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ctx, span := Span(ctx)
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defer span.End()
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stop := [3]func() error{
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initLogger(name),
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}
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ctx, stop[1] = initMetrics(ctx, name)
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ctx, stop[2] = initTracing(ctx, name)
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reverse(stop[:])
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return ctx, func() error {
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log.Println("flushing logs...")
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errs := make([]error, len(stop))
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for i, fn := range stop {
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if fn != nil {
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errs[i] = fn()
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}
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}
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log.Println("all stopped.")
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return multierr.Combine(errs...)
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}
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}
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func env(name, defaultValue string) string {
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name = strings.TrimSpace(name)
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defaultValue = strings.TrimSpace(defaultValue)
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if v := strings.TrimSpace(os.Getenv(name)); v != "" {
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log.Println("# ", name, "=", v)
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return v
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}
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log.Println("# ", name, "=", defaultValue, "(default)")
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return defaultValue
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}
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type secret string
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func (s secret) String() string {
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if s == "" {
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return "(nil)"
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}
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return "***"
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}
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func (s secret) Secret() string {
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return string(s)
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}
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func envSecret(name, defaultValue string) secret {
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name = strings.TrimSpace(name)
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defaultValue = strings.TrimSpace(defaultValue)
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if v := strings.TrimSpace(os.Getenv(name)); v != "" {
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log.Println("# ", name, "=", secret(v))
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return secret(v)
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}
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log.Println("# ", name, "=", secret(defaultValue), "(default)")
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return secret(defaultValue)
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}
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