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switch to slog.Logger for logging, for easier reuse of packages by external software

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we don't want external software to include internal details like mlog.
slog.Logger is/will be the standard.

we still have mlog for its helper functions, and its handler that logs in
concise logfmt used by mox.

packages that are not meant for reuse still pass around mlog.Log for
convenience.

we use golang.org/x/exp/slog because we also support the previous Go toolchain
version. with the next Go release, we'll switch to the builtin slog.
This commit is contained in:
Mechiel Lukkien
2023-12-05 13:35:58 +01:00
parent 56b2a9d980
commit 5b20cba50a
150 changed files with 5176 additions and 1898 deletions
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22
dnsbl/dnsbl.go
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@ -10,6 +10,8 @@ import (
"strings"
"time"
"golang.org/x/exp/slog"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
@ -17,8 +19,6 @@ import (
"github.com/mjl-/mox/mlog"
)
var xlog = mlog.New("dnsbl")
var (
metricLookup = promauto.NewHistogramVec(
prometheus.HistogramOpts{
@ -45,12 +45,12 @@ var (
)
// Lookup checks if "ip" occurs in the DNS block list "zone" (e.g. dnsbl.example.org).
func Lookup(ctx context.Context, resolver dns.Resolver, zone dns.Domain, ip net.IP) (rstatus Status, rexplanation string, rerr error) {
log := xlog.WithContext(ctx)
func Lookup(ctx context.Context, elog *slog.Logger, resolver dns.Resolver, zone dns.Domain, ip net.IP) (rstatus Status, rexplanation string, rerr error) {
log := mlog.New("dnsbl", elog)
start := time.Now()
defer func() {
metricLookup.WithLabelValues(zone.Name(), string(rstatus)).Observe(float64(time.Since(start)) / float64(time.Second))
log.Debugx("dnsbl lookup result", rerr, mlog.Field("zone", zone), mlog.Field("ip", ip), mlog.Field("status", rstatus), mlog.Field("explanation", rexplanation), mlog.Field("duration", time.Since(start)))
log.Debugx("dnsbl lookup result", rerr, slog.Any("zone", zone), slog.Any("ip", ip), slog.Any("status", rstatus), slog.String("explanation", rexplanation), slog.Duration("duration", time.Since(start)))
}()
b := &strings.Builder{}
@ -93,7 +93,7 @@ func Lookup(ctx context.Context, resolver dns.Resolver, zone dns.Domain, ip net.
if dns.IsNotFound(err) {
return StatusFail, "", nil
} else if err != nil {
log.Debugx("looking up txt record from dnsbl", err, mlog.Field("addr", addr))
log.Debugx("looking up txt record from dnsbl", err, slog.String("addr", addr))
return StatusFail, "", nil
}
return StatusFail, strings.Join(txts, "; "), nil
@ -104,16 +104,16 @@ func Lookup(ctx context.Context, resolver dns.Resolver, zone dns.Domain, ip net.
// Users of a DNSBL should periodically check if the DNSBL is still operating
// properly.
// For temporary errors, ErrDNS is returned.
func CheckHealth(ctx context.Context, resolver dns.Resolver, zone dns.Domain) (rerr error) {
log := xlog.WithContext(ctx)
func CheckHealth(ctx context.Context, elog *slog.Logger, resolver dns.Resolver, zone dns.Domain) (rerr error) {
log := mlog.New("dnsbl", elog)
start := time.Now()
defer func() {
log.Debugx("dnsbl healthcheck result", rerr, mlog.Field("zone", zone), mlog.Field("duration", time.Since(start)))
log.Debugx("dnsbl healthcheck result", rerr, slog.Any("zone", zone), slog.Duration("duration", time.Since(start)))
}()
// ../rfc/5782:355
status1, _, err1 := Lookup(ctx, resolver, zone, net.IPv4(127, 0, 0, 1))
status2, _, err2 := Lookup(ctx, resolver, zone, net.IPv4(127, 0, 0, 2))
status1, _, err1 := Lookup(ctx, log.Logger, resolver, zone, net.IPv4(127, 0, 0, 1))
status2, _, err2 := Lookup(ctx, log.Logger, resolver, zone, net.IPv4(127, 0, 0, 2))
if status1 == StatusPass && status2 == StatusFail {
return nil
} else if status1 == StatusFail {