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authorMatthew Holt <[email protected]>2022-09-16 16:55:30 -0600
committerMatthew Holt <[email protected]>2022-09-16 16:55:36 -0600
commite43b6d81782ef79f22058179d8793f40cea89556 (patch)
tree13648af23e92b26cb28c13cb12c620bf746c819c
parentbffc2587329ca7e1f8a28edae9b5a9bf11e2fc7c (diff)
downloadcaddy-2.6.0-beta.4.tar.gz
caddy-2.6.0-beta.4.zip
core: Variadic Context.Logger(); soft deprecationv2.6.0-beta.4
Ideally I'd just remove the parameter to caddy.Context.Logger(), but this would break most Caddy plugins. Instead, I'm making it variadic and marking it as partially deprecated. In the future, I might completely remove the parameter once most plugins have updated.
-rw-r--r--caddyconfig/httploader.go4
-rw-r--r--context.go43
-rw-r--r--modules/caddyevents/app.go2
-rw-r--r--modules/caddyhttp/app.go2
-rw-r--r--modules/caddyhttp/caddyauth/caddyauth.go2
-rw-r--r--modules/caddyhttp/caddyauth/hashes.go2
-rw-r--r--modules/caddyhttp/celmatcher.go16
-rw-r--r--modules/caddyhttp/fileserver/matcher.go2
-rw-r--r--modules/caddyhttp/fileserver/staticfiles.go2
-rw-r--r--modules/caddyhttp/matchers.go2
-rw-r--r--modules/caddyhttp/push/handler.go2
-rw-r--r--modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go2
-rw-r--r--modules/caddyhttp/reverseproxy/httptransport.go2
-rw-r--r--modules/caddyhttp/reverseproxy/reverseproxy.go2
-rw-r--r--modules/caddyhttp/reverseproxy/upstreams.go4
-rw-r--r--modules/caddyhttp/rewrite/rewrite.go2
-rw-r--r--modules/caddyhttp/tracing/module.go9
-rw-r--r--modules/caddypki/acmeserver/acmeserver.go2
-rw-r--r--modules/caddypki/adminapi.go2
-rw-r--r--modules/caddypki/pki.go2
-rw-r--r--modules/caddytls/acmeissuer.go2
-rw-r--r--modules/caddytls/certmanagers.go2
-rw-r--r--modules/caddytls/internalissuer.go13
-rw-r--r--modules/caddytls/matchers.go2
-rw-r--r--modules/caddytls/tls.go2
-rw-r--r--modules/caddytls/zerosslissuer.go2
-rw-r--r--modules/metrics/metrics.go9
27 files changed, 71 insertions, 67 deletions
diff --git a/caddyconfig/httploader.go b/caddyconfig/httploader.go
index e4d815915..80eab4469 100644
--- a/caddyconfig/httploader.go
+++ b/caddyconfig/httploader.go
@@ -113,7 +113,7 @@ func (hl HTTPLoader) LoadConfig(ctx caddy.Context) ([]byte, error) {
return nil, err
}
for _, warn := range warnings {
- ctx.Logger(hl).Warn(warn.String())
+ ctx.Logger().Warn(warn.String())
}
return result, nil
@@ -129,7 +129,7 @@ func (hl HTTPLoader) makeClient(ctx caddy.Context) (*http.Client, error) {
// client authentication
if hl.TLS.UseServerIdentity {
- certs, err := ctx.IdentityCredentials(ctx.Logger(hl))
+ certs, err := ctx.IdentityCredentials(ctx.Logger())
if err != nil {
return nil, fmt.Errorf("getting server identity credentials: %v", err)
}
diff --git a/context.go b/context.go
index e850b73df..e55e40cef 100644
--- a/context.go
+++ b/context.go
@@ -442,10 +442,27 @@ func (ctx Context) Storage() certmagic.Storage {
return ctx.cfg.storage
}
-// TODO: aw man, can I please change this?
-// Logger returns a logger that can be used by mod.
-func (ctx Context) Logger(mod Module) *zap.Logger {
- // TODO: if mod is nil, use ctx.Module() instead...
+// Logger returns a logger that is intended for use by the most
+// recent module associated with the context. Callers should not
+// pass in any arguments unless they want to associate with a
+// different module; it panics if more than 1 value is passed in.
+//
+// Originally, this method's signature was `Logger(mod Module)`,
+// requiring that an instance of a Caddy module be passsed in.
+// However, that is no longer necessary, as the closest module
+// most recently associated with the context will be automatically
+// assumed. To prevent a sudden breaking change, this method's
+// signature has been changed to be variadic, but we may remove
+// the parameter altogether in the future. Callers should not
+// pass in any argument. If there is valid need to specify a
+// different module, please open an issue to discuss.
+//
+// PARTIALLY DEPRECATED: The Logger(module) form is deprecated and
+// may be removed in the future. Do not pass in any arguments.
+func (ctx Context) Logger(module ...Module) *zap.Logger {
+ if len(module) > 1 {
+ panic("more than 1 module passed in")
+ }
if ctx.cfg == nil {
// often the case in tests; just use a dev logger
l, err := zap.NewDevelopment()
@@ -454,23 +471,13 @@ func (ctx Context) Logger(mod Module) *zap.Logger {
}
return l
}
+ mod := ctx.Module()
+ if len(module) > 0 {
+ mod = module[0]
+ }
return ctx.cfg.Logging.Logger(mod)
}
-// TODO: use this
-// // Logger returns a logger that can be used by the current module.
-// func (ctx Context) Log() *zap.Logger {
-// if ctx.cfg == nil {
-// // often the case in tests; just use a dev logger
-// l, err := zap.NewDevelopment()
-// if err != nil {
-// panic("config missing, unable to create dev logger: " + err.Error())
-// }
-// return l
-// }
-// return ctx.cfg.Logging.Logger(ctx.Module())
-// }
-
// Modules returns the lineage of modules that this context provisioned,
// with the most recent/current module being last in the list.
func (ctx Context) Modules() []Module {
diff --git a/modules/caddyevents/app.go b/modules/caddyevents/app.go
index 3ae40e813..db2192ce3 100644
--- a/modules/caddyevents/app.go
+++ b/modules/caddyevents/app.go
@@ -119,7 +119,7 @@ func (App) CaddyModule() caddy.ModuleInfo {
// Provision sets up the app.
func (app *App) Provision(ctx caddy.Context) error {
- app.logger = ctx.Logger(app)
+ app.logger = ctx.Logger()
app.subscriptions = make(map[string]map[caddy.ModuleID][]Handler)
for _, sub := range app.Subscriptions {
diff --git a/modules/caddyhttp/app.go b/modules/caddyhttp/app.go
index 0253521a6..290a4083e 100644
--- a/modules/caddyhttp/app.go
+++ b/modules/caddyhttp/app.go
@@ -160,7 +160,7 @@ func (app *App) Provision(ctx caddy.Context) error {
}
app.tlsApp = tlsAppIface.(*caddytls.TLS)
app.ctx = ctx
- app.logger = ctx.Logger(app)
+ app.logger = ctx.Logger()
eventsAppIface, err := ctx.App("events")
if err != nil {
diff --git a/modules/caddyhttp/caddyauth/caddyauth.go b/modules/caddyhttp/caddyauth/caddyauth.go
index ae30a0863..b2bdbc22f 100644
--- a/modules/caddyhttp/caddyauth/caddyauth.go
+++ b/modules/caddyhttp/caddyauth/caddyauth.go
@@ -56,7 +56,7 @@ func (Authentication) CaddyModule() caddy.ModuleInfo {
// Provision sets up a.
func (a *Authentication) Provision(ctx caddy.Context) error {
- a.logger = ctx.Logger(a)
+ a.logger = ctx.Logger()
a.Providers = make(map[string]Authenticator)
mods, err := ctx.LoadModule(a, "ProvidersRaw")
if err != nil {
diff --git a/modules/caddyhttp/caddyauth/hashes.go b/modules/caddyhttp/caddyauth/hashes.go
index 6505d187c..6a651f0d9 100644
--- a/modules/caddyhttp/caddyauth/hashes.go
+++ b/modules/caddyhttp/caddyauth/hashes.go
@@ -92,7 +92,7 @@ func (ScryptHash) CaddyModule() caddy.ModuleInfo {
// Provision sets up s.
func (s *ScryptHash) Provision(ctx caddy.Context) error {
s.SetDefaults()
- ctx.Logger(s).Warn("use of 'scrypt' is deprecated, please use 'bcrypt' instead")
+ ctx.Logger().Warn("use of 'scrypt' is deprecated, please use 'bcrypt' instead")
return nil
}
diff --git a/modules/caddyhttp/celmatcher.go b/modules/caddyhttp/celmatcher.go
index e7067c324..7f1cc02ef 100644
--- a/modules/caddyhttp/celmatcher.go
+++ b/modules/caddyhttp/celmatcher.go
@@ -90,7 +90,7 @@ func (m *MatchExpression) UnmarshalJSON(data []byte) error {
// Provision sets ups m.
func (m *MatchExpression) Provision(ctx caddy.Context) error {
- m.log = ctx.Logger(m)
+ m.log = ctx.Logger()
// replace placeholders with a function call - this is just some
// light (and possibly naïve) syntactic sugar
@@ -294,13 +294,13 @@ type CELLibraryProducer interface {
// CELMatcherImpl creates a new cel.Library based on the following pieces of
// data:
//
-// - macroName: the function name to be used within CEL. This will be a macro
-// and not a function proper.
-// - funcName: the function overload name generated by the CEL macro used to
-// represent the matcher.
-// - matcherDataTypes: the argument types to the macro.
-// - fac: a matcherFactory implementation which converts from CEL constant
-// values to a Matcher instance.
+// - macroName: the function name to be used within CEL. This will be a macro
+// and not a function proper.
+// - funcName: the function overload name generated by the CEL macro used to
+// represent the matcher.
+// - matcherDataTypes: the argument types to the macro.
+// - fac: a matcherFactory implementation which converts from CEL constant
+// values to a Matcher instance.
//
// Note, macro names and function names must not collide with other macros or
// functions exposed within CEL expressions, or an error will be produced
diff --git a/modules/caddyhttp/fileserver/matcher.go b/modules/caddyhttp/fileserver/matcher.go
index 87a152433..2989e4b20 100644
--- a/modules/caddyhttp/fileserver/matcher.go
+++ b/modules/caddyhttp/fileserver/matcher.go
@@ -256,7 +256,7 @@ func celFileMatcherMacroExpander() parser.MacroExpander {
// Provision sets up m's defaults.
func (m *MatchFile) Provision(ctx caddy.Context) error {
- m.logger = ctx.Logger(m)
+ m.logger = ctx.Logger()
// establish the file system to use
if len(m.FileSystemRaw) > 0 {
diff --git a/modules/caddyhttp/fileserver/staticfiles.go b/modules/caddyhttp/fileserver/staticfiles.go
index 0639d979f..84743388e 100644
--- a/modules/caddyhttp/fileserver/staticfiles.go
+++ b/modules/caddyhttp/fileserver/staticfiles.go
@@ -167,7 +167,7 @@ func (FileServer) CaddyModule() caddy.ModuleInfo {
// Provision sets up the static files responder.
func (fsrv *FileServer) Provision(ctx caddy.Context) error {
- fsrv.logger = ctx.Logger(fsrv)
+ fsrv.logger = ctx.Logger()
// establish which file system (possibly a virtual one) we'll be using
if len(fsrv.FileSystemRaw) > 0 {
diff --git a/modules/caddyhttp/matchers.go b/modules/caddyhttp/matchers.go
index a01f8f985..bca94be8e 100644
--- a/modules/caddyhttp/matchers.go
+++ b/modules/caddyhttp/matchers.go
@@ -1326,7 +1326,7 @@ func (MatchRemoteIP) CELLibrary(ctx caddy.Context) (cel.Library, error) {
// Provision parses m's IP ranges, either from IP or CIDR expressions.
func (m *MatchRemoteIP) Provision(ctx caddy.Context) error {
- m.logger = ctx.Logger(m)
+ m.logger = ctx.Logger()
for _, str := range m.Ranges {
// Exclude the zone_id from the IP
if strings.Contains(str, "%") {
diff --git a/modules/caddyhttp/push/handler.go b/modules/caddyhttp/push/handler.go
index 27652ef08..60eadd0c6 100644
--- a/modules/caddyhttp/push/handler.go
+++ b/modules/caddyhttp/push/handler.go
@@ -61,7 +61,7 @@ func (Handler) CaddyModule() caddy.ModuleInfo {
// Provision sets up h.
func (h *Handler) Provision(ctx caddy.Context) error {
- h.logger = ctx.Logger(h)
+ h.logger = ctx.Logger()
if h.Headers != nil {
err := h.Headers.Provision(ctx)
if err != nil {
diff --git a/modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go b/modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go
index 6ff6ff4a9..ec194e727 100644
--- a/modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go
+++ b/modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go
@@ -94,7 +94,7 @@ func (Transport) CaddyModule() caddy.ModuleInfo {
// Provision sets up t.
func (t *Transport) Provision(ctx caddy.Context) error {
- t.logger = ctx.Logger(t)
+ t.logger = ctx.Logger()
if t.Root == "" {
t.Root = "{http.vars.root}"
diff --git a/modules/caddyhttp/reverseproxy/httptransport.go b/modules/caddyhttp/reverseproxy/httptransport.go
index e9c7ddd0a..ec5d2f23a 100644
--- a/modules/caddyhttp/reverseproxy/httptransport.go
+++ b/modules/caddyhttp/reverseproxy/httptransport.go
@@ -195,7 +195,7 @@ func (h *HTTPTransport) NewTransport(caddyCtx caddy.Context) (*http.Transport, e
TCPConn: tcpConn,
readTimeout: time.Duration(h.ReadTimeout),
writeTimeout: time.Duration(h.WriteTimeout),
- logger: caddyCtx.Logger(h),
+ logger: caddyCtx.Logger(),
}
}
diff --git a/modules/caddyhttp/reverseproxy/reverseproxy.go b/modules/caddyhttp/reverseproxy/reverseproxy.go
index dc1458d11..4c8b29b13 100644
--- a/modules/caddyhttp/reverseproxy/reverseproxy.go
+++ b/modules/caddyhttp/reverseproxy/reverseproxy.go
@@ -217,7 +217,7 @@ func (h *Handler) Provision(ctx caddy.Context) error {
}
h.events = eventAppIface.(*caddyevents.App)
h.ctx = ctx
- h.logger = ctx.Logger(h)
+ h.logger = ctx.Logger()
h.connections = make(map[io.ReadWriteCloser]openConnection)
h.connectionsMu = new(sync.Mutex)
diff --git a/modules/caddyhttp/reverseproxy/upstreams.go b/modules/caddyhttp/reverseproxy/upstreams.go
index b9f85a2ce..7a90016d0 100644
--- a/modules/caddyhttp/reverseproxy/upstreams.go
+++ b/modules/caddyhttp/reverseproxy/upstreams.go
@@ -76,7 +76,7 @@ func (SRVUpstreams) CaddyModule() caddy.ModuleInfo {
}
func (su *SRVUpstreams) Provision(ctx caddy.Context) error {
- su.logger = ctx.Logger(su)
+ su.logger = ctx.Logger()
if su.Refresh == 0 {
su.Refresh = caddy.Duration(time.Minute)
}
@@ -383,7 +383,7 @@ func (MultiUpstreams) CaddyModule() caddy.ModuleInfo {
}
func (mu *MultiUpstreams) Provision(ctx caddy.Context) error {
- mu.logger = ctx.Logger(mu)
+ mu.logger = ctx.Logger()
if mu.SourcesRaw != nil {
mod, err := ctx.LoadModule(mu, "SourcesRaw")
diff --git a/modules/caddyhttp/rewrite/rewrite.go b/modules/caddyhttp/rewrite/rewrite.go
index 4316b5afd..95bc50468 100644
--- a/modules/caddyhttp/rewrite/rewrite.go
+++ b/modules/caddyhttp/rewrite/rewrite.go
@@ -101,7 +101,7 @@ func (Rewrite) CaddyModule() caddy.ModuleInfo {
// Provision sets up rewr.
func (rewr *Rewrite) Provision(ctx caddy.Context) error {
- rewr.logger = ctx.Logger(rewr)
+ rewr.logger = ctx.Logger()
for i, rep := range rewr.PathRegexp {
if rep.Find == "" {
diff --git a/modules/caddyhttp/tracing/module.go b/modules/caddyhttp/tracing/module.go
index 7cce6692b..e3eb84d20 100644
--- a/modules/caddyhttp/tracing/module.go
+++ b/modules/caddyhttp/tracing/module.go
@@ -42,7 +42,7 @@ func (Tracing) CaddyModule() caddy.ModuleInfo {
// Provision implements caddy.Provisioner.
func (ot *Tracing) Provision(ctx caddy.Context) error {
- ot.logger = ctx.Logger(ot)
+ ot.logger = ctx.Logger()
var err error
ot.otel, err = newOpenTelemetryWrapper(ctx, ot.SpanName)
@@ -66,10 +66,9 @@ func (ot *Tracing) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyh
// UnmarshalCaddyfile sets up the module from Caddyfile tokens. Syntax:
//
-// tracing {
-// [span <span_name>]
-// }
-//
+// tracing {
+// [span <span_name>]
+// }
func (ot *Tracing) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
setParameter := func(d *caddyfile.Dispenser, val *string) error {
if d.NextArg() {
diff --git a/modules/caddypki/acmeserver/acmeserver.go b/modules/caddypki/acmeserver/acmeserver.go
index ff021b4ff..921d0b879 100644
--- a/modules/caddypki/acmeserver/acmeserver.go
+++ b/modules/caddypki/acmeserver/acmeserver.go
@@ -87,7 +87,7 @@ func (Handler) CaddyModule() caddy.ModuleInfo {
// Provision sets up the ACME server handler.
func (ash *Handler) Provision(ctx caddy.Context) error {
- ash.logger = ctx.Logger(ash)
+ ash.logger = ctx.Logger()
// set some defaults
if ash.CA == "" {
ash.CA = caddypki.DefaultCAID
diff --git a/modules/caddypki/adminapi.go b/modules/caddypki/adminapi.go
index b4d269516..f03c6b638 100644
--- a/modules/caddypki/adminapi.go
+++ b/modules/caddypki/adminapi.go
@@ -47,7 +47,7 @@ func (adminAPI) CaddyModule() caddy.ModuleInfo {
// Provision sets up the adminAPI module.
func (a *adminAPI) Provision(ctx caddy.Context) error {
a.ctx = ctx
- a.log = ctx.Logger(a)
+ a.log = ctx.Logger(a) // TODO: passing in 'a' is a hack until the admin API is officially extensible (see #5032)
// First check if the PKI app was configured, because
// a.ctx.App() has the side effect of instantiating
diff --git a/modules/caddypki/pki.go b/modules/caddypki/pki.go
index 4fd0bb508..2caeb2b59 100644
--- a/modules/caddypki/pki.go
+++ b/modules/caddypki/pki.go
@@ -54,7 +54,7 @@ func (PKI) CaddyModule() caddy.ModuleInfo {
// Provision sets up the configuration for the PKI app.
func (p *PKI) Provision(ctx caddy.Context) error {
p.ctx = ctx
- p.log = ctx.Logger(p)
+ p.log = ctx.Logger()
for caID, ca := range p.CAs {
err := ca.Provision(ctx, caID, p.log)
diff --git a/modules/caddytls/acmeissuer.go b/modules/caddytls/acmeissuer.go
index 2fe4004fa..2f752ed05 100644
--- a/modules/caddytls/acmeissuer.go
+++ b/modules/caddytls/acmeissuer.go
@@ -103,7 +103,7 @@ func (ACMEIssuer) CaddyModule() caddy.ModuleInfo {
// Provision sets up iss.
func (iss *ACMEIssuer) Provision(ctx caddy.Context) error {
- iss.logger = ctx.Logger(iss)
+ iss.logger = ctx.Logger()
repl := caddy.NewReplacer()
diff --git a/modules/caddytls/certmanagers.go b/modules/caddytls/certmanagers.go
index de7abf973..1b701ab26 100644
--- a/modules/caddytls/certmanagers.go
+++ b/modules/caddytls/certmanagers.go
@@ -43,7 +43,7 @@ func (Tailscale) CaddyModule() caddy.ModuleInfo {
}
func (ts *Tailscale) Provision(ctx caddy.Context) error {
- ts.logger = ctx.Logger(ts)
+ ts.logger = ctx.Logger()
return nil
}
diff --git a/modules/caddytls/internalissuer.go b/modules/caddytls/internalissuer.go
index ba6055edd..3dd6c359f 100644
--- a/modules/caddytls/internalissuer.go
+++ b/modules/caddytls/internalissuer.go
@@ -65,7 +65,7 @@ func (InternalIssuer) CaddyModule() caddy.ModuleInfo {
// Provision sets up the issuer.
func (iss *InternalIssuer) Provision(ctx caddy.Context) error {
- iss.logger = ctx.Logger(iss)
+ iss.logger = ctx.Logger()
// set some defaults
if iss.CA == "" {
@@ -148,12 +148,11 @@ func (iss InternalIssuer) Issue(ctx context.Context, csr *x509.CertificateReques
// UnmarshalCaddyfile deserializes Caddyfile tokens into iss.
//
-// ... internal {
-// ca <name>
-// lifetime <duration>
-// sign_with_root
-// }
-//
+// ... internal {
+// ca <name>
+// lifetime <duration>
+// sign_with_root
+// }
func (iss *InternalIssuer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
for d.NextBlock(0) {
diff --git a/modules/caddytls/matchers.go b/modules/caddytls/matchers.go
index 4a22bc09c..f541220fc 100644
--- a/modules/caddytls/matchers.go
+++ b/modules/caddytls/matchers.go
@@ -81,7 +81,7 @@ func (MatchRemoteIP) CaddyModule() caddy.ModuleInfo {
// Provision parses m's IP ranges, either from IP or CIDR expressions.
func (m *MatchRemoteIP) Provision(ctx caddy.Context) error {
- m.logger = ctx.Logger(m)
+ m.logger = ctx.Logger()
for _, str := range m.Ranges {
cidrs, err := m.parseIPRange(str)
if err != nil {
diff --git a/modules/caddytls/tls.go b/modules/caddytls/tls.go
index 2e532ed91..8051653ee 100644
--- a/modules/caddytls/tls.go
+++ b/modules/caddytls/tls.go
@@ -94,7 +94,7 @@ func (t *TLS) Provision(ctx caddy.Context) error {
}
t.events = eventsAppIface.(*caddyevents.App)
t.ctx = ctx
- t.logger = ctx.Logger(t)
+ t.logger = ctx.Logger()
repl := caddy.NewReplacer()
// set up a new certificate cache; this (re)loads all certificates
diff --git a/modules/caddytls/zerosslissuer.go b/modules/caddytls/zerosslissuer.go
index c7ff70fbd..02092944b 100644
--- a/modules/caddytls/zerosslissuer.go
+++ b/modules/caddytls/zerosslissuer.go
@@ -66,7 +66,7 @@ func (*ZeroSSLIssuer) CaddyModule() caddy.ModuleInfo {
// Provision sets up iss.
func (iss *ZeroSSLIssuer) Provision(ctx caddy.Context) error {
- iss.logger = ctx.Logger(iss)
+ iss.logger = ctx.Logger()
if iss.ACMEIssuer == nil {
iss.ACMEIssuer = new(ACMEIssuer)
}
diff --git a/modules/metrics/metrics.go b/modules/metrics/metrics.go
index 1ad392c1e..d4ad97798 100644
--- a/modules/metrics/metrics.go
+++ b/modules/metrics/metrics.go
@@ -62,7 +62,7 @@ func (l *zapLogger) Println(v ...any) {
// Provision sets up m.
func (m *Metrics) Provision(ctx caddy.Context) error {
- log := ctx.Logger(m)
+ log := ctx.Logger()
m.metricsHandler = createMetricsHandler(&zapLogger{log}, !m.DisableOpenMetrics)
return nil
}
@@ -75,10 +75,9 @@ func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error)
// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
//
-// metrics [<matcher>] {
-// disable_openmetrics
-// }
-//
+// metrics [<matcher>] {
+// disable_openmetrics
+// }
func (m *Metrics) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
for d.Next() {
args := d.RemainingArgs()