Remove Starlark, for now

This is temporary as we prepare for a stable v2 release. We don't want
to make promises we don't know we can keep, and the Starlark integration
deserves much more focused attention which resources and funding do not
currently permit. When the project is financially stable, I will be able
to revisit this properly and add flexible, robust Starlark scripting
support to Caddy 2.

1 files changed, 0 insertions, 165 deletions

diff --git a/modules/caddyhttp/starlarkmw/internal/lib/module.go b/modules/caddyhttp/starlarkmw/internal/lib/module.go
deleted file mode 100644
index 13c706c..0000000
--- a/modules/caddyhttp/starlarkmw/internal/lib/module.go
+++ /dev/null
@@ -1,165 +0,0 @@
-package lib
-
-import (
-	"encoding/json"
-	"fmt"
-	"strings"
-
-	"github.com/caddyserver/caddy/v2/modules/caddyhttp"
-
-	"github.com/caddyserver/caddy/v2"
-	"go.starlark.net/starlark"
-)
-
-// ResponderModule represents a module that satisfies the caddyhttp handler.
-type ResponderModule struct {
-	Name     string
-	Cfg      json.RawMessage
-	Instance caddyhttp.Handler
-}
-
-func (r ResponderModule) Freeze()               {}
-func (r ResponderModule) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: responder module") }
-func (r ResponderModule) String() string        { return "responder module" }
-func (r ResponderModule) Type() string          { return "responder module" }
-func (r ResponderModule) Truth() starlark.Bool  { return true }
-
-// Middleware represents a module that satisfies the starlark Value interface.
-type Middleware struct {
-	Name     string
-	Cfg      json.RawMessage
-	Instance caddyhttp.MiddlewareHandler
-}
-
-func (r Middleware) Freeze()               {}
-func (r Middleware) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: middleware") }
-func (r Middleware) String() string        { return "middleware" }
-func (r Middleware) Type() string          { return "middleware" }
-func (r Middleware) Truth() starlark.Bool  { return true }
-
-// LoadMiddleware represents the method exposed to starlark to load a Caddy module.
-type LoadMiddleware struct {
-	Middleware Middleware
-	Ctx        caddy.Context
-}
-
-func (r LoadMiddleware) Freeze()               {}
-func (r LoadMiddleware) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: loadMiddleware") }
-func (r LoadMiddleware) String() string        { return "loadMiddleware" }
-func (r LoadMiddleware) Type() string          { return "function: loadMiddleware" }
-func (r LoadMiddleware) Truth() starlark.Bool  { return true }
-
-// Run is the method bound to the starlark loadMiddleware function.
-func (r *LoadMiddleware) Run(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
-	var name string
-	var cfg *starlark.Dict
-	err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 2, &name, &cfg)
-	if err != nil {
-		return starlark.None, fmt.Errorf("unpacking arguments: %v", err.Error())
-	}
-
-	js := json.RawMessage(cfg.String())
-
-	if !strings.Contains(name, "http.handlers.") {
-		name = fmt.Sprintf("http.handlers.%s", name)
-	}
-
-	inst, err := r.Ctx.LoadModuleByID(name, js)
-	if err != nil {
-		return starlark.None, err
-	}
-
-	mid, ok := inst.(caddyhttp.MiddlewareHandler)
-	if !ok {
-		return starlark.None, fmt.Errorf("could not assert as middleware handler")
-	}
-
-	m := Middleware{
-		Name:     name,
-		Cfg:      js,
-		Instance: mid,
-	}
-
-	r.Middleware = m
-
-	return m, nil
-}
-
-// LoadResponder represents the method exposed to starlark to load a Caddy middleware responder.
-type LoadResponder struct {
-	Module ResponderModule
-	Ctx    caddy.Context
-}
-
-func (r LoadResponder) Freeze()               {}
-func (r LoadResponder) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: loadModule") }
-func (r LoadResponder) String() string        { return "loadModule" }
-func (r LoadResponder) Type() string          { return "function: loadModule" }
-func (r LoadResponder) Truth() starlark.Bool  { return true }
-
-// Run is the method bound to the starlark loadResponder function.
-func (r *LoadResponder) Run(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
-	var name string
-	var cfg *starlark.Dict
-	err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 2, &name, &cfg)
-	if err != nil {
-		return starlark.None, fmt.Errorf("unpacking arguments: %v", err.Error())
-	}
-
-	js := json.RawMessage(cfg.String())
-
-	if !strings.Contains(name, "http.handlers.") {
-		name = fmt.Sprintf("http.handlers.%s", name)
-	}
-
-	inst, err := r.Ctx.LoadModuleByID(name, js)
-	if err != nil {
-		return starlark.None, err
-	}
-
-	res, ok := inst.(caddyhttp.Handler)
-	if !ok {
-		return starlark.None, fmt.Errorf("could not assert as responder")
-	}
-
-	m := ResponderModule{
-		Name:     name,
-		Cfg:      js,
-		Instance: res,
-	}
-
-	r.Module = m
-
-	return m, nil
-}
-
-// Execute represents the method exposed to starlark to build a middleware chain.
-type Execute struct {
-	Modules []Middleware
-}
-
-func (r Execute) Freeze()               {}
-func (r Execute) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: execute") }
-func (r Execute) String() string        { return "execute" }
-func (r Execute) Type() string          { return "function: execute" }
-func (r Execute) Truth() starlark.Bool  { return true }
-
-// Run is the method bound to the starlark execute function.
-func (r *Execute) Run(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
-	var mids *starlark.List
-	err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &mids)
-	if err != nil {
-		return starlark.None, fmt.Errorf("unpacking arguments: %v", err.Error())
-	}
-
-	for i := 0; i < mids.Len(); i++ {
-		val, ok := mids.Index(i).(Middleware)
-		if !ok {
-			return starlark.None, fmt.Errorf("cannot get module from execute")
-		}
-
-		r.Modules = append(r.Modules, val)
-	}
-
-	return starlark.None, nil
-}