ginuerzh
3b25e0317f
Add the first implementation of core/rewriter.Rewriter as a plugin-only component following the bypass/admission pattern (single-value, no RewriterObject). Includes: - plugin/rewriter/proto/: protobuf definition with Rewrite RPC returning transformed data in the reply - x/rewriter/plugin/: gRPC and HTTP plugin clients - x/registry/rewriter.go: hot-reload-safe RewriterRegistry with wrapper - x/config/config.go: RewriterConfig, Config.Rewriters, ServiceConfig.Rewriter - x/config/parsing/rewriter/parse.go: config parser (plugin backends only) - core/handler/option.go: Rewriter field + RewriterOption on handler.Options - x/config/loader/loader.go: rewriter registration during startup - x/config/parsing/service/parse.go: inject rewriter into handler options
44 lines
1020 B
Go
44 lines
1020 B
Go
package registry
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import (
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"context"
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"github.com/go-gost/core/rewriter"
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)
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// rewriterRegistry implements a hot-reload-safe registry for rewriter.Rewriter.
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type rewriterRegistry struct {
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registry[rewriter.Rewriter]
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}
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// Register stores a Rewriter under the given name.
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func (r *rewriterRegistry) Register(name string, v rewriter.Rewriter) error {
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return r.registry.Register(name, v)
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}
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// Get returns a wrapper that delegates to the currently registered Rewriter.
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// Returns nil if name is empty.
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func (r *rewriterRegistry) Get(name string) rewriter.Rewriter {
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if name != "" {
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return &rewriterWrapper{name: name, r: r}
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}
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return nil
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}
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func (r *rewriterRegistry) get(name string) rewriter.Rewriter {
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return r.registry.Get(name)
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}
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type rewriterWrapper struct {
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name string
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r *rewriterRegistry
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}
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func (w *rewriterWrapper) Rewrite(ctx context.Context, b []byte, opts ...rewriter.RewriteOption) ([]byte, error) {
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v := w.r.get(w.name)
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if v == nil {
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return b, nil
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}
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return v.Rewrite(ctx, b, opts...)
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}
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