Refactor Caddyfile adapter and module registration

Use piles from which to draw config values.

Module values can return their name, so now we can do two-way mapping
from value to name and name to value; whereas before we could only map
name to value. This was problematic with the Caddyfile adapter since
it receives values and needs to know the name to put in the config.

31 files changed, 532 insertions, 310 deletions

diff --git a/modules/caddyhttp/caddyhttp.go b/modules/caddyhttp/caddyhttp.go
index 21c5b6d..b4b1ec6 100644
--- a/modules/caddyhttp/caddyhttp.go
+++ b/modules/caddyhttp/caddyhttp.go
@@ -37,10 +37,7 @@ import (
 func init() {
 	weakrand.Seed(time.Now().UnixNano())
 
-	err := caddy.RegisterModule(caddy.Module{
-		Name: "http",
-		New:  func() interface{} { return new(App) },
-	})
+	err := caddy.RegisterModule(App{})
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -58,6 +55,14 @@ type App struct {
 	ctx caddy.Context
 }
 
+// CaddyModule returns the Caddy module information.
+func (App) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http",
+		New:  func() caddy.Module { return new(App) },
+	}
+}
+
 // Provision sets up the app.
 func (app *App) Provision(ctx caddy.Context) error {
 	app.ctx = ctx
@@ -227,7 +232,7 @@ func (app *App) automaticHTTPS() error {
 		// find all qualifying domain names, de-duplicated
 		domainSet := make(map[string]struct{})
 		for _, route := range srv.Routes {
-			for _, matcherSet := range route.matcherSets {
+			for _, matcherSet := range route.MatcherSets {
 				for _, m := range matcherSet {
 					if hm, ok := m.(*MatchHost); ok {
 						for _, d := range *hm {
@@ -331,13 +336,13 @@ func (app *App) automaticHTTPS() error {
 				redirTo += "{http.request.uri}"
 
 				redirRoutes = append(redirRoutes, Route{
-					matcherSets: []MatcherSet{
+					MatcherSets: []MatcherSet{
 						{
 							MatchProtocol("http"),
 							MatchHost(domains),
 						},
 					},
-					handlers: []MiddlewareHandler{
+					Handlers: []MiddlewareHandler{
 						StaticResponse{
 							StatusCode: WeakString(strconv.Itoa(http.StatusTemporaryRedirect)), // TODO: use permanent redirect instead
 							Headers: http.Header{
diff --git a/modules/caddyhttp/caddylog/log.go b/modules/caddyhttp/caddylog/log.go
index 902f60f..3f636d1 100644
--- a/modules/caddyhttp/caddylog/log.go
+++ b/modules/caddyhttp/caddylog/log.go
@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.log",
-		New:  func() interface{} { return new(Log) },
-	})
+	caddy.RegisterModule(Log{})
 }
 
 // Log implements a simple logging middleware.
@@ -36,6 +33,14 @@ type Log struct {
 	counter  int
 }
 
+// CaddyModule returns the Caddy module information.
+func (Log) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.log",
+		New:  func() caddy.Module { return new(Log) },
+	}
+}
+
 func (l *Log) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	start := time.Now()
 
diff --git a/modules/caddyhttp/encode/brotli/brotli.go b/modules/caddyhttp/encode/brotli/brotli.go
index 0a9f871..cf055aa 100644
--- a/modules/caddyhttp/encode/brotli/brotli.go
+++ b/modules/caddyhttp/encode/brotli/brotli.go
@@ -19,16 +19,13 @@ import (
 	"strconv"
 
 	"github.com/andybalholm/brotli"
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.brotli",
-		New:  func() interface{} { return new(Brotli) },
-	})
+	caddy.RegisterModule(Brotli{})
 }
 
 // Brotli can create brotli encoders. Note that brotli
@@ -37,6 +34,14 @@ type Brotli struct {
 	Quality *int `json:"quality,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Brotli) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.brotli",
+		New:  func() caddy.Module { return new(Brotli) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (b *Brotli) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
diff --git a/modules/caddyhttp/encode/caddyfile.go b/modules/caddyhttp/encode/caddyfile.go
index 5aca6ac..5762bd3 100644
--- a/modules/caddyhttp/encode/caddyfile.go
+++ b/modules/caddyhttp/encode/caddyfile.go
@@ -22,8 +22,25 @@ import (
 	"github.com/caddyserver/caddy/v2/caddyconfig"
 	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("encode", parseCaddyfile)
+}
+
+// TODO: This is a good example of why UnmarshalCaddyfile is still a good idea... hmm.
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	enc := new(Encode)
+	err := enc.UnmarshalCaddyfile(h.Dispenser)
+	if err != nil {
+		return nil, err
+	}
+	return enc, nil
+}
+
+// TODO: Keep UnmarshalCaddyfile pattern?
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     encode [<matcher>] <formats...> {
@@ -78,8 +95,5 @@ func (enc *Encode) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (enc Encode) Bucket() int { return 3 }
-
 // Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Encode)(nil)
+var _ caddyfile.Unmarshaler = (*Encode)(nil)
diff --git a/modules/caddyhttp/encode/encode.go b/modules/caddyhttp/encode/encode.go
index 4e5f743..723b988 100644
--- a/modules/caddyhttp/encode/encode.go
+++ b/modules/caddyhttp/encode/encode.go
@@ -35,10 +35,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.encode",
-		New:  func() interface{} { return new(Encode) },
-	})
+	caddy.RegisterModule(Encode{})
 }
 
 // Encode is a middleware which can encode responses.
@@ -50,6 +47,14 @@ type Encode struct {
 	writerPools map[string]*sync.Pool // TODO: these pools do not get reused through config reloads...
 }
 
+// CaddyModule returns the Caddy module information.
+func (Encode) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.encode",
+		New:  func() caddy.Module { return new(Encode) },
+	}
+}
+
 // Provision provisions enc.
 func (enc *Encode) Provision(ctx caddy.Context) error {
 	for modName, rawMsg := range enc.EncodingsRaw {
diff --git a/modules/caddyhttp/encode/gzip/gzip.go b/modules/caddyhttp/encode/gzip/gzip.go
index 87e8816..d6d67f7 100644
--- a/modules/caddyhttp/encode/gzip/gzip.go
+++ b/modules/caddyhttp/encode/gzip/gzip.go
@@ -20,16 +20,13 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.gzip",
-		New:  func() interface{} { return new(Gzip) },
-	})
+	caddy.RegisterModule(Gzip{})
 }
 
 // Gzip can create gzip encoders.
@@ -37,6 +34,14 @@ type Gzip struct {
 	Level int `json:"level,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Gzip) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.gzip",
+		New:  func() caddy.Module { return new(Gzip) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (g *Gzip) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
diff --git a/modules/caddyhttp/encode/zstd/zstd.go b/modules/caddyhttp/encode/zstd/zstd.go
index 3622628..f2b4e85 100644
--- a/modules/caddyhttp/encode/zstd/zstd.go
+++ b/modules/caddyhttp/encode/zstd/zstd.go
@@ -15,22 +15,27 @@
 package caddyzstd
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp/encode"
 	"github.com/klauspost/compress/zstd"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.encoders.zstd",
-		New:  func() interface{} { return new(Zstd) },
-	})
+	caddy.RegisterModule(Zstd{})
 }
 
 // Zstd can create Zstandard encoders.
 type Zstd struct{}
 
+// CaddyModule returns the Caddy module information.
+func (Zstd) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.encoders.zstd",
+		New:  func() caddy.Module { return new(Zstd) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens.
 func (z *Zstd) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
diff --git a/modules/caddyhttp/fileserver/caddyfile.go b/modules/caddyhttp/fileserver/caddyfile.go
index 7d9ddd9..6fa94e7 100644
--- a/modules/caddyhttp/fileserver/caddyfile.go
+++ b/modules/caddyhttp/fileserver/caddyfile.go
@@ -15,59 +15,58 @@
 package fileserver
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
+	"encoding/json"
+
+	"github.com/caddyserver/caddy/modules/caddyhttp/rewrite"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
-//
-//     file_server [<matcher>] [browse] {
-//         hide <files...>
-//         index <files...>
-//         browse [<template_file>]
-//         root <path>
-//     }
-//
-// If browse is given on the first line, it can't be used in the block also.
-// The default root is the one given by the root directive.
-func (fsrv *FileServer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		args := d.RemainingArgs()
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("file_server", parseCaddyfile)
+	httpcaddyfile.RegisterDirective("try_files", parseTryFiles)
+}
+
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	var fsrv FileServer
+
+	for h.Next() {
+		args := h.RemainingArgs()
 		switch len(args) {
 		case 0:
 		case 1:
 			if args[0] != "browse" {
-				return d.ArgErr()
+				return nil, h.ArgErr()
 			}
 			fsrv.Browse = new(Browse)
 		default:
-			return d.ArgErr()
+			return nil, h.ArgErr()
 		}
 
-		for d.NextBlock() {
-			switch d.Val() {
+		for h.NextBlock() {
+			switch h.Val() {
 			case "hide":
-				fsrv.Hide = d.RemainingArgs()
+				fsrv.Hide = h.RemainingArgs()
 				if len(fsrv.Hide) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "index":
-				fsrv.IndexNames = d.RemainingArgs()
+				fsrv.IndexNames = h.RemainingArgs()
 				if len(fsrv.Hide) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "root":
-				if !d.Args(&fsrv.Root) {
-					return d.ArgErr()
+				if !h.Args(&fsrv.Root) {
+					return nil, h.ArgErr()
 				}
 			case "browse":
 				if fsrv.Browse != nil {
-					return d.Err("browsing is already configured")
+					return nil, h.Err("browsing is already configured")
 				}
 				fsrv.Browse = new(Browse)
-				d.Args(&fsrv.Browse.TemplateFile)
+				h.Args(&fsrv.Browse.TemplateFile)
 			default:
-				return d.Errf("unknown subdirective '%s'", d.Val())
+				return nil, h.Errf("unknown subdirective '%s'", h.Val())
 			}
 		}
 	}
@@ -77,11 +76,29 @@ func (fsrv *FileServer) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 		fsrv.Root = "{http.var.root}"
 	}
 
-	return nil
+	return &fsrv, nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (fsrv FileServer) Bucket() int { return 7 }
+func parseTryFiles(h httpcaddyfile.Helper) ([]httpcaddyfile.ConfigValue, error) {
+	if !h.Next() {
+		return nil, h.ArgErr()
+	}
+
+	try := h.RemainingArgs()
+	if len(try) == 0 {
+		return nil, h.ArgErr()
+	}
+
+	handler := rewrite.Rewrite{
+		URI: "{http.matchers.file.relative}{http.request.uri.query}",
+	}
 
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*FileServer)(nil)
+	matcherSet := map[string]json.RawMessage{
+		"file": h.JSON(MatchFile{
+			Root:     "{http.var.root}",
+			TryFiles: try,
+		}, nil),
+	}
+
+	return h.NewRoute(matcherSet, handler), nil
+}
diff --git a/modules/caddyhttp/fileserver/matcher.go b/modules/caddyhttp/fileserver/matcher.go
index eca0e8f..b091250 100644
--- a/modules/caddyhttp/fileserver/matcher.go
+++ b/modules/caddyhttp/fileserver/matcher.go
@@ -20,16 +20,13 @@ import (
 	"os"
 	"time"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.file",
-		New:  func() interface{} { return new(MatchFile) },
-	})
+	caddy.RegisterModule(MatchFile{})
 }
 
 // MatchFile is an HTTP request matcher that can match
@@ -52,12 +49,20 @@ type MatchFile struct {
 	TryPolicy string `json:"try_policy,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchFile) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.file",
+		New:  func() caddy.Module { return new(MatchFile) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the matcher from Caddyfile tokens. Syntax:
 //
 //     file {
 //         root <path>
 //         try_files <files...>
-//         try_policy <first_exist|smallest_size|largest_size|most_recent_modified>
+//         try_policy first_exist|smallest_size|largest_size|most_recent_modified
 //     }
 //
 func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
@@ -82,6 +87,9 @@ func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 			}
 		}
 	}
+	if m.Root == "" {
+		m.Root = "{http.var.root}"
+	}
 	return nil
 }
 
@@ -121,7 +129,7 @@ func (m MatchFile) Match(r *http.Request) bool {
 func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 
-	root := repl.ReplaceAll(m.Root, "")
+	root := repl.ReplaceAll(m.Root, ".")
 
 	// if list of files to try was omitted entirely,
 	// assume URL path
diff --git a/modules/caddyhttp/fileserver/staticfiles.go b/modules/caddyhttp/fileserver/staticfiles.go
index 1b542cf..cdac453 100644
--- a/modules/caddyhttp/fileserver/staticfiles.go
+++ b/modules/caddyhttp/fileserver/staticfiles.go
@@ -36,10 +36,7 @@ import (
 func init() {
 	weakrand.Seed(time.Now().UnixNano())
 
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.file_server",
-		New:  func() interface{} { return new(FileServer) },
-	})
+	caddy.RegisterModule(FileServer{})
 }
 
 // FileServer implements a static file server responder for Caddy.
@@ -50,6 +47,14 @@ type FileServer struct {
 	Browse     *Browse  `json:"browse,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (FileServer) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.file_server",
+		New:  func() caddy.Module { return new(FileServer) },
+	}
+}
+
 // Provision sets up the static files responder.
 func (fsrv *FileServer) Provision(ctx caddy.Context) error {
 	if fsrv.IndexNames == nil {
diff --git a/modules/caddyhttp/headers/caddyfile.go b/modules/caddyhttp/headers/caddyfile.go
index 8d320e5..5eaf064 100644
--- a/modules/caddyhttp/headers/caddyfile.go
+++ b/modules/caddyhttp/headers/caddyfile.go
@@ -18,11 +18,15 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("headers", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     headers [<matcher>] [[+|-]<field> <value>] {
 //         [+][<field>] [<value>]
@@ -31,62 +35,57 @@ import (
 //
 // Either a block can be opened or a single header field can be configured
 // in the first line, but not both in the same directive.
-func (h *Headers) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	hdr := new(Headers)
+	for h.Next() {
 		// first see if headers are in the initial line
 		var hasArgs bool
-		if d.NextArg() {
+		if h.NextArg() {
 			hasArgs = true
-			field := d.Val()
-			d.NextArg()
-			value := d.Val()
-			h.processCaddyfileLine(field, value)
+			field := h.Val()
+			h.NextArg()
+			value := h.Val()
+			processCaddyfileLine(hdr, field, value)
 		}
 
 		// if not, they should be in a block
-		for d.NextBlock() {
+		for h.NextBlock() {
 			if hasArgs {
-				return d.Err("cannot specify headers in both arguments and block")
+				return nil, h.Err("cannot specify headers in both arguments and block")
 			}
-			field := d.Val()
+			field := h.Val()
 			var value string
-			if d.NextArg() {
-				value = d.Val()
+			if h.NextArg() {
+				value = h.Val()
 			}
-			h.processCaddyfileLine(field, value)
+			processCaddyfileLine(hdr, field, value)
 		}
 	}
-	return nil
+	return hdr, nil
 }
 
-func (h *Headers) processCaddyfileLine(field, value string) {
+func processCaddyfileLine(hdr *Headers, field, value string) {
 	if strings.HasPrefix(field, "+") {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		if h.Response.Add == nil {
-			h.Response.Add = make(http.Header)
+		if hdr.Response.Add == nil {
+			hdr.Response.Add = make(http.Header)
 		}
-		h.Response.Add.Set(field[1:], value)
+		hdr.Response.Add.Set(field[1:], value)
 	} else if strings.HasPrefix(field, "-") {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		h.Response.Delete = append(h.Response.Delete, field[1:])
-		h.Response.Deferred = true
+		hdr.Response.Delete = append(hdr.Response.Delete, field[1:])
+		hdr.Response.Deferred = true
 	} else {
-		if h.Response == nil {
-			h.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
+		if hdr.Response == nil {
+			hdr.Response = &RespHeaderOps{HeaderOps: new(HeaderOps)}
 		}
-		if h.Response.Set == nil {
-			h.Response.Set = make(http.Header)
+		if hdr.Response.Set == nil {
+			hdr.Response.Set = make(http.Header)
 		}
-		h.Response.Set.Set(field, value)
+		hdr.Response.Set.Set(field, value)
 	}
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (h Headers) Bucket() int { return 3 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Headers)(nil)
diff --git a/modules/caddyhttp/headers/headers.go b/modules/caddyhttp/headers/headers.go
index 8f4976a..e740004 100644
--- a/modules/caddyhttp/headers/headers.go
+++ b/modules/caddyhttp/headers/headers.go
@@ -23,10 +23,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.headers",
-		New:  func() interface{} { return new(Headers) },
-	})
+	caddy.RegisterModule(Headers{})
 }
 
 // Headers is a middleware which can mutate HTTP headers.
@@ -35,6 +32,14 @@ type Headers struct {
 	Response *RespHeaderOps `json:"response,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Headers) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.headers",
+		New:  func() caddy.Module { return new(Headers) },
+	}
+}
+
 // HeaderOps defines some operations to
 // perform on HTTP headers.
 type HeaderOps struct {
diff --git a/modules/caddyhttp/markdown/markdown.go b/modules/caddyhttp/markdown/markdown.go
index 3ba4d02..122aad6 100644
--- a/modules/caddyhttp/markdown/markdown.go
+++ b/modules/caddyhttp/markdown/markdown.go
@@ -28,16 +28,21 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.markdown",
-		New:  func() interface{} { return new(Markdown) },
-	})
+	caddy.RegisterModule(Markdown{})
 }
 
 // Markdown is a middleware for rendering a Markdown response body.
 type Markdown struct {
 }
 
+// CaddyModule returns the Caddy module information.
+func (Markdown) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.markdown",
+		New:  func() caddy.Module { return new(Markdown) },
+	}
+}
+
 func (m Markdown) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	buf := bufPool.Get().(*bytes.Buffer)
 	buf.Reset()
diff --git a/modules/caddyhttp/matchers.go b/modules/caddyhttp/matchers.go
index 72b5476..0dac151 100644
--- a/modules/caddyhttp/matchers.go
+++ b/modules/caddyhttp/matchers.go
@@ -80,50 +80,25 @@ type (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
+	caddy.RegisterModule(MatchHost{})
+	caddy.RegisterModule(MatchPath{})
+	caddy.RegisterModule(MatchPathRE{})
+	caddy.RegisterModule(MatchMethod{})
+	caddy.RegisterModule(MatchQuery{})
+	caddy.RegisterModule(MatchHeader{})
+	caddy.RegisterModule(MatchHeaderRE{})
+	caddy.RegisterModule(new(MatchProtocol))
+	caddy.RegisterModule(MatchRemoteIP{})
+	caddy.RegisterModule(MatchNegate{})
+	caddy.RegisterModule(new(MatchStarlarkExpr))
+}
+
+// CaddyModule returns the Caddy module information.
+func (MatchHost) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
 		Name: "http.matchers.host",
-		New:  func() interface{} { return new(MatchHost) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.path",
-		New:  func() interface{} { return new(MatchPath) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.path_regexp",
-		New:  func() interface{} { return new(MatchPathRE) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.method",
-		New:  func() interface{} { return new(MatchMethod) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.query",
-		New:  func() interface{} { return new(MatchQuery) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.header",
-		New:  func() interface{} { return new(MatchHeader) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.header_regexp",
-		New:  func() interface{} { return new(MatchHeaderRE) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.protocol",
-		New:  func() interface{} { return new(MatchProtocol) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.remote_ip",
-		New:  func() interface{} { return new(MatchRemoteIP) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.not",
-		New:  func() interface{} { return new(MatchNegate) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.starlark_expr",
-		New:  func() interface{} { return new(MatchStarlarkExpr) },
-	})
+		New:  func() caddy.Module { return new(MatchHost) },
+	}
 }
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
@@ -165,6 +140,14 @@ outer:
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchPath) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.path",
+		New:  func() caddy.Module { return new(MatchPath) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchPath) Match(r *http.Request) bool {
 	for _, matchPath := range m {
@@ -186,19 +169,39 @@ func (m MatchPath) Match(r *http.Request) bool {
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchPath) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	*m = d.RemainingArgs()
+	for d.Next() {
+		*m = d.RemainingArgs()
+	}
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchPathRE) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.path_regexp",
+		New:  func() caddy.Module { return new(MatchPathRE) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchPathRE) Match(r *http.Request) bool {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 	return m.MatchRegexp.Match(r.URL.Path, repl, "path_regexp")
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchMethod) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.method",
+		New:  func() caddy.Module { return new(MatchMethod) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchMethod) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	*m = d.RemainingArgs()
+	for d.Next() {
+		*m = d.RemainingArgs()
+	}
 	return nil
 }
 
@@ -212,6 +215,14 @@ func (m MatchMethod) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchQuery) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.query",
+		New:  func() caddy.Module { return new(MatchQuery) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchQuery) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
@@ -237,6 +248,14 @@ func (m MatchQuery) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchHeader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.header",
+		New:  func() caddy.Module { return new(MatchHeader) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchHeader) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	for d.Next() {
@@ -270,6 +289,14 @@ func (m MatchHeader) Match(r *http.Request) bool {
 	return true
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchHeaderRE) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.header_regexp",
+		New:  func() caddy.Module { return new(MatchHeaderRE) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchHeaderRE) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	if *m == nil {
@@ -319,6 +346,14 @@ func (m MatchHeaderRE) Validate() error {
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchProtocol) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.protocol",
+		New:  func() caddy.Module { return new(MatchProtocol) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchProtocol) Match(r *http.Request) bool {
 	switch string(m) {
@@ -334,14 +369,24 @@ func (m MatchProtocol) Match(r *http.Request) bool {
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchProtocol) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	var proto string
-	if !d.Args(&proto) {
-		return d.Err("expected exactly one protocol")
+	for d.Next() {
+		var proto string
+		if !d.Args(&proto) {
+			return d.Err("expected exactly one protocol")
+		}
+		*m = MatchProtocol(proto)
 	}
-	*m = MatchProtocol(proto)
 	return nil
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchNegate) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.not",
+		New:  func() caddy.Module { return new(MatchNegate) },
+	}
+}
+
 // UnmarshalJSON unmarshals data into m's unexported map field.
 // This is done because we cannot embed the map directly into
 // the struct, but we need a struct because we need another
@@ -375,9 +420,19 @@ func (m MatchNegate) Match(r *http.Request) bool {
 	return !m.matchers.Match(r)
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchRemoteIP) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.remote_ip",
+		New:  func() caddy.Module { return new(MatchRemoteIP) },
+	}
+}
+
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (m *MatchRemoteIP) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	m.Ranges = d.RemainingArgs()
+	for d.Next() {
+		m.Ranges = d.RemainingArgs()
+	}
 	return nil
 }
 
@@ -442,6 +497,14 @@ func (m MatchRemoteIP) Match(r *http.Request) bool {
 	return false
 }
 
+// CaddyModule returns the Caddy module information.
+func (MatchStarlarkExpr) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.starlark_expr", // TODO: Rename to 'starlark'?
+		New:  func() caddy.Module { return new(MatchStarlarkExpr) },
+	}
+}
+
 // Match returns true if r matches m.
 func (m MatchStarlarkExpr) Match(r *http.Request) bool {
 	input := string(m)
@@ -513,8 +576,17 @@ func (mre *MatchRegexp) Match(input string, repl caddy.Replacer, scope string) b
 
 // UnmarshalCaddyfile implements caddyfile.Unmarshaler.
 func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	if !d.Args(&mre.Name, &mre.Pattern) {
-		return fmt.Errorf("missing arguments")
+	for d.Next() {
+		args := d.RemainingArgs()
+		switch len(args) {
+		case 1:
+			mre.Pattern = args[0]
+		case 2:
+			mre.Name = args[0]
+			mre.Pattern = args[1]
+		default:
+			return d.ArgErr()
+		}
 	}
 	return nil
 }
diff --git a/modules/caddyhttp/requestbody/requestbody.go b/modules/caddyhttp/requestbody/requestbody.go
index 3763cfe..9b16250 100644
--- a/modules/caddyhttp/requestbody/requestbody.go
+++ b/modules/caddyhttp/requestbody/requestbody.go
@@ -22,10 +22,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.request_body",
-		New:  func() interface{} { return new(RequestBody) },
-	})
+	caddy.RegisterModule(RequestBody{})
 }
 
 // RequestBody is a middleware for manipulating the request body.
@@ -33,6 +30,14 @@ type RequestBody struct {
 	MaxSize int64 `json:"max_size,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (RequestBody) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.request_body", // TODO: better name for this?
+		New:  func() caddy.Module { return new(RequestBody) },
+	}
+}
+
 func (rb RequestBody) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	if r.Body == nil {
 		return next.ServeHTTP(w, r)
diff --git a/modules/caddyhttp/reverseproxy/module.go b/modules/caddyhttp/reverseproxy/module.go
index ff5786c..21aca1d 100755
--- a/modules/caddyhttp/reverseproxy/module.go
+++ b/modules/caddyhttp/reverseproxy/module.go
@@ -15,39 +15,39 @@
 package reverseproxy
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
-	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
 	"github.com/caddyserver/caddy/v2"
+	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// Register caddy module.
 func init() {
-	caddy.RegisterModule(caddy.Module{
+	caddy.RegisterModule(new(LoadBalanced))
+	httpcaddyfile.RegisterHandlerDirective("reverse_proxy", parseCaddyfile) // TODO: "proxy"?
+}
+
+// CaddyModule returns the Caddy module information.
+func (*LoadBalanced) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
 		Name: "http.handlers.reverse_proxy",
-		New:  func() interface{} { return new(LoadBalanced) },
-	})
+		New:  func() caddy.Module { return new(LoadBalanced) },
+	}
 }
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     proxy [<matcher>] <to>
 //
 // TODO: This needs to be finished. It definitely needs to be able to open a block...
-func (lb *LoadBalanced) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		allTo := d.RemainingArgs()
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	lb := new(LoadBalanced)
+	for h.Next() {
+		allTo := h.RemainingArgs()
 		if len(allTo) == 0 {
-			return d.ArgErr()
+			return nil, h.ArgErr()
 		}
 		for _, to := range allTo {
 			lb.Upstreams = append(lb.Upstreams, &UpstreamConfig{Host: to})
 		}
 	}
-	return nil
+	return lb, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (*LoadBalanced) Bucket() int { return 7 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*LoadBalanced)(nil)
diff --git a/modules/caddyhttp/rewrite/caddyfile.go b/modules/caddyhttp/rewrite/caddyfile.go
index a067fe1..a977a72 100644
--- a/modules/caddyhttp/rewrite/caddyfile.go
+++ b/modules/caddyhttp/rewrite/caddyfile.go
@@ -15,24 +15,23 @@
 package rewrite
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("rewrite", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     rewrite [<matcher>] <to>
 //
 // The <to> parameter becomes the new URI.
-func (rewr *Rewrite) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		rewr.URI = d.Val()
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	var rewr Rewrite
+	for h.Next() {
+		rewr.URI = h.Val()
 	}
-	return nil
+	return rewr, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (rewr Rewrite) Bucket() int { return 1 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Rewrite)(nil)
diff --git a/modules/caddyhttp/rewrite/rewrite.go b/modules/caddyhttp/rewrite/rewrite.go
index ac113ff..f434a38 100644
--- a/modules/caddyhttp/rewrite/rewrite.go
+++ b/modules/caddyhttp/rewrite/rewrite.go
@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.rewrite",
-		New:  func() interface{} { return new(Rewrite) },
-	})
+	caddy.RegisterModule(Rewrite{})
 }
 
 // Rewrite is a middleware which can rewrite HTTP requests.
@@ -37,6 +34,14 @@ type Rewrite struct {
 	Rehandle bool   `json:"rehandle,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Rewrite) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.rewrite",
+		New:  func() caddy.Module { return new(Rewrite) },
+	}
+}
+
 func (rewr Rewrite) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 	var rehandleNeeded bool
diff --git a/modules/caddyhttp/routes.go b/modules/caddyhttp/routes.go
index ffa7ce7..1efbad6 100644
--- a/modules/caddyhttp/routes.go
+++ b/modules/caddyhttp/routes.go
@@ -26,33 +26,34 @@ import (
 // middlewares, and a responder for handling HTTP
 // requests.
 type Route struct {
-	Group       string                       `json:"group,omitempty"`
-	MatcherSets []map[string]json.RawMessage `json:"match,omitempty"`
-	Handle      []json.RawMessage            `json:"handle,omitempty"`
-	Terminal    bool                         `json:"terminal,omitempty"`
+	Group          string                       `json:"group,omitempty"`
+	MatcherSetsRaw []map[string]json.RawMessage `json:"match,omitempty"`
+	HandlersRaw    []json.RawMessage            `json:"handle,omitempty"`
+	Terminal       bool                         `json:"terminal,omitempty"`
 
 	// decoded values
-	matcherSets []MatcherSet
-	handlers    []MiddlewareHandler
+	MatcherSets []MatcherSet        `json:"-"`
+	Handlers    []MiddlewareHandler `json:"-"`
 }
 
 // Empty returns true if the route has all zero/default values.
 func (r Route) Empty() bool {
-	return len(r.MatcherSets) == 0 &&
-		len(r.Handle) == 0 &&
-		len(r.handlers) == 0 &&
+	return len(r.MatcherSetsRaw) == 0 &&
+		len(r.MatcherSets) == 0 &&
+		len(r.HandlersRaw) == 0 &&
+		len(r.Handlers) == 0 &&
 		!r.Terminal &&
 		r.Group == ""
 }
 
 func (r Route) anyMatcherSetMatches(req *http.Request) bool {
-	for _, ms := range r.matcherSets {
+	for _, ms := range r.MatcherSets {
 		if ms.Match(req) {
 			return true
 		}
 	}
 	// if no matchers, always match
-	return len(r.matcherSets) == 0
+	return len(r.MatcherSets) == 0
 }
 
 // MatcherSet is a set of matchers which
@@ -79,7 +80,7 @@ type RouteList []Route
 func (routes RouteList) Provision(ctx caddy.Context) error {
 	for i, route := range routes {
 		// matchers
-		for _, matcherSet := range route.MatcherSets {
+		for _, matcherSet := range route.MatcherSetsRaw {
 			var matchers MatcherSet
 			for modName, rawMsg := range matcherSet {
 				val, err := ctx.LoadModule("http.matchers."+modName, rawMsg)
@@ -88,19 +89,19 @@ func (routes RouteList) Provision(ctx caddy.Context) error {
 				}
 				matchers = append(matchers, val.(RequestMatcher))
 			}
-			routes[i].matcherSets = append(routes[i].matcherSets, matchers)
+			routes[i].MatcherSets = append(routes[i].MatcherSets, matchers)
 		}
-		routes[i].MatcherSets = nil // allow GC to deallocate - TODO: Does this help?
+		routes[i].MatcherSetsRaw = nil // allow GC to deallocate - TODO: Does this help?
 
 		// handlers
-		for j, rawMsg := range route.Handle {
+		for j, rawMsg := range route.HandlersRaw {
 			mh, err := ctx.LoadModuleInline("handler", "http.handlers", rawMsg)
 			if err != nil {
 				return fmt.Errorf("loading handler module in position %d: %v", j, err)
 			}
-			routes[i].handlers = append(routes[i].handlers, mh.(MiddlewareHandler))
+			routes[i].Handlers = append(routes[i].Handlers, mh.(MiddlewareHandler))
 		}
-		routes[i].Handle = nil // allow GC to deallocate - TODO: Does this help?
+		routes[i].HandlersRaw = nil // allow GC to deallocate - TODO: Does this help?
 	}
 	return nil
 }
@@ -135,7 +136,7 @@ func (routes RouteList) BuildCompositeRoute(req *http.Request) Handler {
 		}
 
 		// apply the rest of the route
-		for _, mh := range route.handlers {
+		for _, mh := range route.Handlers {
 			// we have to be sure to wrap mh outside
 			// of our current stack frame so that the
 			// reference to this mh isn't overwritten
diff --git a/modules/caddyhttp/staticerror.go b/modules/caddyhttp/staticerror.go
index 1834cf7..3a45366 100644
--- a/modules/caddyhttp/staticerror.go
+++ b/modules/caddyhttp/staticerror.go
@@ -23,10 +23,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.error",
-		New:  func() interface{} { return new(StaticError) },
-	})
+	caddy.RegisterModule(StaticError{})
 }
 
 // StaticError implements a simple handler that returns an error.
@@ -35,6 +32,14 @@ type StaticError struct {
 	StatusCode WeakString `json:"status_code,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (StaticError) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.error",
+		New:  func() caddy.Module { return new(StaticError) },
+	}
+}
+
 func (e StaticError) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 
diff --git a/modules/caddyhttp/staticresp.go b/modules/caddyhttp/staticresp.go
index cafee35..942459b 100644
--- a/modules/caddyhttp/staticresp.go
+++ b/modules/caddyhttp/staticresp.go
@@ -24,10 +24,8 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.static_response",
-		New:  func() interface{} { return new(StaticResponse) },
-	})
+	caddy.RegisterModule(StaticResponse{})
+	// TODO: Caddyfile directive
 }
 
 // StaticResponse implements a simple responder for static responses.
@@ -38,6 +36,14 @@ type StaticResponse struct {
 	Close      bool        `json:"close,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (StaticResponse) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.static_response",
+		New:  func() caddy.Module { return new(StaticResponse) },
+	}
+}
+
 // UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     static_response [<matcher>] <status> {
@@ -71,9 +77,6 @@ func (s *StaticResponse) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 	return nil
 }
 
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (StaticResponse) Bucket() int { return 7 }
-
 func (s StaticResponse) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error {
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
 
diff --git a/modules/caddyhttp/subroute.go b/modules/caddyhttp/subroute.go
index 9172146..3b0d718 100644
--- a/modules/caddyhttp/subroute.go
+++ b/modules/caddyhttp/subroute.go
@@ -22,10 +22,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.subroute",
-		New:  func() interface{} { return new(Subroute) },
-	})
+	caddy.RegisterModule(Subroute{})
 }
 
 // Subroute implements a handler that compiles and executes routes.
@@ -37,6 +34,14 @@ type Subroute struct {
 	Routes RouteList `json:"routes,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Subroute) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.subroute",
+		New:  func() caddy.Module { return new(Subroute) },
+	}
+}
+
 // Provision sets up subrouting.
 func (sr *Subroute) Provision(ctx caddy.Context) error {
 	if sr.Routes != nil {
diff --git a/modules/caddyhttp/templates/caddyfile.go b/modules/caddyhttp/templates/caddyfile.go
index d27b8e3..d948da0 100644
--- a/modules/caddyhttp/templates/caddyfile.go
+++ b/modules/caddyhttp/templates/caddyfile.go
@@ -15,11 +15,15 @@
 package templates
 
 import (
-	"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
 	"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
+	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
 )
 
-// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
+func init() {
+	httpcaddyfile.RegisterHandlerDirective("templates", parseCaddyfile)
+}
+
+// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
 //
 //     templates [<matcher>] {
 //         mime <types...>
@@ -27,23 +31,24 @@ import (
 //         root <path>
 //     }
 //
-func (t *Templates) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
-	for d.Next() {
-		for d.NextBlock() {
-			switch d.Val() {
+func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
+	t := new(Templates)
+	for h.Next() {
+		for h.NextBlock() {
+			switch h.Val() {
 			case "mime":
-				t.MIMETypes = d.RemainingArgs()
+				t.MIMETypes = h.RemainingArgs()
 				if len(t.MIMETypes) == 0 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "between":
-				t.Delimiters = d.RemainingArgs()
+				t.Delimiters = h.RemainingArgs()
 				if len(t.Delimiters) != 2 {
-					return d.ArgErr()
+					return nil, h.ArgErr()
 				}
 			case "root":
-				if !d.Args(&t.IncludeRoot) {
-					return d.ArgErr()
+				if !h.Args(&t.IncludeRoot) {
+					return nil, h.ArgErr()
 				}
 			}
 		}
@@ -53,11 +58,5 @@ func (t *Templates) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 		t.IncludeRoot = "{http.var.root}"
 	}
 
-	return nil
+	return t, nil
 }
-
-// Bucket returns the HTTP Caddyfile handler bucket number.
-func (t Templates) Bucket() int { return 5 }
-
-// Interface guard
-var _ httpcaddyfile.HandlerDirective = (*Templates)(nil)
diff --git a/modules/caddyhttp/templates/templates.go b/modules/caddyhttp/templates/templates.go
index 442e177..1cd347c 100644
--- a/modules/caddyhttp/templates/templates.go
+++ b/modules/caddyhttp/templates/templates.go
@@ -27,10 +27,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.templates",
-		New:  func() interface{} { return new(Templates) },
-	})
+	caddy.RegisterModule(Templates{})
 }
 
 // Templates is a middleware which execute response bodies as templates.
@@ -40,6 +37,14 @@ type Templates struct {
 	Delimiters  []string `json:"delimiters,omitempty"`
 }
 
+// CaddyModule returns the Caddy module information.
+func (Templates) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.templates",
+		New:  func() caddy.Module { return new(Templates) },
+	}
+}
+
 // Provision provisions t.
 func (t *Templates) Provision(ctx caddy.Context) error {
 	if t.MIMETypes == nil {
diff --git a/modules/caddyhttp/vars.go b/modules/caddyhttp/vars.go
index f74556a..bbd4568 100644
--- a/modules/caddyhttp/vars.go
+++ b/modules/caddyhttp/vars.go
@@ -21,20 +21,22 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.handlers.vars",
-		New:  func() interface{} { return new(VarsMiddleware) },
-	})
-	caddy.RegisterModule(caddy.Module{
-		Name: "http.matchers.vars",
-		New:  func() interface{} { return new(VarsMiddleware) },
-	})
+	caddy.RegisterModule(VarsMiddleware{})
+	caddy.RegisterModule(VarsMatcher{})
 }
 
 // VarsMiddleware is an HTTP middleware which sets variables
 // in the context, mainly for use by placeholders.
 type VarsMiddleware map[string]string
 
+// CaddyModule returns the Caddy module information.
+func (VarsMiddleware) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.handlers.vars",
+		New:  func() caddy.Module { return new(VarsMiddleware) },
+	}
+}
+
 func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next Handler) error {
 	vars := r.Context().Value(VarCtxKey).(map[string]interface{})
 	repl := r.Context().Value(caddy.ReplacerCtxKey).(caddy.Replacer)
@@ -50,6 +52,14 @@ func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next H
 // requests based on variables in the context.
 type VarsMatcher map[string]string
 
+// CaddyModule returns the Caddy module information.
+func (VarsMatcher) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "http.matchers.vars",
+		New:  func() caddy.Module { return new(VarsMatcher) },
+	}
+}
+
 // Match matches a request based on variables in the context.
 func (m VarsMatcher) Match(r *http.Request) bool {
 	vars := r.Context().Value(VarCtxKey).(map[string]string)
diff --git a/modules/caddytls/acmemanager.go b/modules/caddytls/acmemanager.go
index 578cdb3..36f1c21 100644
--- a/modules/caddytls/acmemanager.go
+++ b/modules/caddytls/acmemanager.go
@@ -28,10 +28,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.management.acme",
-		New:  func() interface{} { return new(ACMEManagerMaker) },
-	})
+	caddy.RegisterModule(ACMEManagerMaker{})
 }
 
 // ACMEManagerMaker makes an ACME manager
@@ -57,9 +54,17 @@ type ACMEManagerMaker struct {
 	keyType certcrypto.KeyType
 }
 
-// newManager is a no-op to satisfy the ManagerMaker interface,
+// CaddyModule returns the Caddy module information.
+func (ACMEManagerMaker) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.management.acme",
+		New:  func() caddy.Module { return new(ACMEManagerMaker) },
+	}
+}
+
+// NewManager is a no-op to satisfy the ManagerMaker interface,
 // because this manager type is a special case.
-func (m *ACMEManagerMaker) newManager(interactive bool) (certmagic.Manager, error) {
+func (m ACMEManagerMaker) NewManager(interactive bool) (certmagic.Manager, error) {
 	return nil, nil
 }
 
@@ -203,4 +208,4 @@ func onDemandAskRequest(ask string, name string) error {
 }
 
 // Interface guard
-var _ managerMaker = (*ACMEManagerMaker)(nil)
+var _ ManagerMaker = (*ACMEManagerMaker)(nil)
diff --git a/modules/caddytls/fileloader.go b/modules/caddytls/fileloader.go
index 7a0d14d..b2cc132 100644
--- a/modules/caddytls/fileloader.go
+++ b/modules/caddytls/fileloader.go
@@ -23,15 +23,20 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.certificates.load_files",
-		New:  func() interface{} { return FileLoader{} },
-	})
+	caddy.RegisterModule(FileLoader{})
 }
 
 // FileLoader loads certificates and their associated keys from disk.
 type FileLoader []CertKeyFilePair
 
+// CaddyModule returns the Caddy module information.
+func (FileLoader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.certificates.load_files",
+		New:  func() caddy.Module { return new(FileLoader) },
+	}
+}
+
 // CertKeyFilePair pairs certificate and key file names along with their
 // encoding format so that they can be loaded from disk.
 type CertKeyFilePair struct {
diff --git a/modules/caddytls/folderloader.go b/modules/caddytls/folderloader.go
index ae7f056..da1dff0 100644
--- a/modules/caddytls/folderloader.go
+++ b/modules/caddytls/folderloader.go
@@ -28,10 +28,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.certificates.load_folders",
-		New:  func() interface{} { return FolderLoader{} },
-	})
+	caddy.RegisterModule(FolderLoader{})
 }
 
 // FolderLoader loads certificates and their associated keys from disk
@@ -39,6 +36,14 @@ func init() {
 // files which contain both a certificate and a key.
 type FolderLoader []string
 
+// CaddyModule returns the Caddy module information.
+func (FolderLoader) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.certificates.load_folders",
+		New:  func() caddy.Module { return new(FolderLoader) },
+	}
+}
+
 // LoadCertificates loads all the certificates+keys in the directories
 // listed in fl from all files ending with .pem. This method of loading
 // certificates expects the certificate and key to be bundled into the
diff --git a/modules/caddytls/matchers.go b/modules/caddytls/matchers.go
index ee146d4..47fb296 100644
--- a/modules/caddytls/matchers.go
+++ b/modules/caddytls/matchers.go
@@ -20,14 +20,19 @@ import (
 	"github.com/caddyserver/caddy/v2"
 )
 
+func init() {
+	caddy.RegisterModule(MatchServerName{})
+}
+
 // MatchServerName matches based on SNI.
 type MatchServerName []string
 
-func init() {
-	caddy.RegisterModule(caddy.Module{
+// CaddyModule returns the Caddy module information.
+func (MatchServerName) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
 		Name: "tls.handshake_match.sni",
-		New:  func() interface{} { return MatchServerName{} },
-	})
+		New:  func() caddy.Module { return new(MatchServerName) },
+	}
 }
 
 // Match matches hello based on SNI.
diff --git a/modules/caddytls/standardstek/stek.go b/modules/caddytls/standardstek/stek.go
index 6a4b1c8..6d10c76 100644
--- a/modules/caddytls/standardstek/stek.go
+++ b/modules/caddytls/standardstek/stek.go
@@ -24,10 +24,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls.stek.standard",
-		New:  func() interface{} { return new(standardSTEKProvider) },
-	})
+	caddy.RegisterModule(standardSTEKProvider{})
 }
 
 type standardSTEKProvider struct {
@@ -35,6 +32,14 @@ type standardSTEKProvider struct {
 	timer      *time.Timer
 }
 
+// CaddyModule returns the Caddy module information.
+func (standardSTEKProvider) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls.stek.standard",
+		New:  func() caddy.Module { return new(standardSTEKProvider) },
+	}
+}
+
 // Initialize sets the configuration for s and returns the starting keys.
 func (s *standardSTEKProvider) Initialize(config *caddytls.SessionTicketService) ([][32]byte, error) {
 	// keep a reference to the config; we'll need it when rotating keys
diff --git a/modules/caddytls/tls.go b/modules/caddytls/tls.go
index ec16995..88b7790 100644
--- a/modules/caddytls/tls.go
+++ b/modules/caddytls/tls.go
@@ -30,10 +30,7 @@ import (
 )
 
 func init() {
-	caddy.RegisterModule(caddy.Module{
-		Name: "tls",
-		New:  func() interface{} { return new(TLS) },
-	})
+	caddy.RegisterModule(TLS{})
 
 	// opt-in TLS 1.3 for Go1.12
 	// TODO: remove this line when Go1.13 is released.
@@ -53,6 +50,14 @@ type TLS struct {
 	ctx                caddy.Context
 }
 
+// CaddyModule returns the Caddy module information.
+func (TLS) CaddyModule() caddy.ModuleInfo {
+	return caddy.ModuleInfo{
+		Name: "tls",
+		New:  func() caddy.Module { return new(TLS) },
+	}
+}
+
 // Provision sets up the configuration for the TLS app.
 func (t *TLS) Provision(ctx caddy.Context) error {
 	t.ctx = ctx
@@ -73,7 +78,7 @@ func (t *TLS) Provision(ctx caddy.Context) error {
 		if err != nil {
 			return fmt.Errorf("loading TLS automation management module: %s", err)
 		}
-		t.Automation.Policies[i].Management = val.(managerMaker)
+		t.Automation.Policies[i].Management = val.(ManagerMaker)
 		t.Automation.Policies[i].ManagementRaw = nil // allow GC to deallocate - TODO: Does this help?
 	}
 
@@ -237,7 +242,7 @@ type AutomationPolicy struct {
 	Hosts         []string        `json:"hosts,omitempty"`
 	ManagementRaw json.RawMessage `json:"management,omitempty"`
 
-	Management managerMaker `json:"-"`
+	Management ManagerMaker `json:"-"`
 }
 
 // makeCertMagicConfig converts ap into a CertMagic config. Passing onDemand
@@ -252,7 +257,7 @@ func (ap AutomationPolicy) makeCertMagicConfig(ctx caddy.Context) certmagic.Conf
 	}
 
 	return certmagic.Config{
-		NewManager: ap.Management.newManager,
+		NewManager: ap.Management.NewManager,
 	}
 }
 
@@ -290,9 +295,9 @@ type RateLimit struct {
 	Burst    int            `json:"burst,omitempty"`
 }
 
-// managerMaker makes a certificate manager.
-type managerMaker interface {
-	newManager(interactive bool) (certmagic.Manager, error)
+// ManagerMaker makes a certificate manager.
+type ManagerMaker interface {
+	NewManager(interactive bool) (certmagic.Manager, error)
 }
 
 // These perpetual values are used for on-demand TLS.