59 lines
1.8 KiB
Go
59 lines
1.8 KiB
Go
package buffering
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import (
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"context"
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"net/http"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/rs/zerolog"
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"github.com/traefik/traefik/v2/pkg/config/dynamic"
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"github.com/traefik/traefik/v2/pkg/logs"
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"github.com/traefik/traefik/v2/pkg/middlewares"
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"github.com/traefik/traefik/v2/pkg/tracing"
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oxybuffer "github.com/vulcand/oxy/v2/buffer"
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)
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const (
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typeName = "Buffer"
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)
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type buffer struct {
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name string
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buffer *oxybuffer.Buffer
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}
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// New creates a buffering middleware.
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func New(ctx context.Context, next http.Handler, config dynamic.Buffering, name string) (http.Handler, error) {
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logger := middlewares.GetLogger(ctx, name, typeName)
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logger.Debug().Msg("Creating middleware")
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logger.Debug().Msgf("Setting up buffering: request limits: %d (mem), %d (max), response limits: %d (mem), %d (max) with retry: '%s'",
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config.MemRequestBodyBytes, config.MaxRequestBodyBytes, config.MemResponseBodyBytes, config.MaxResponseBodyBytes, config.RetryExpression)
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oxyBuffer, err := oxybuffer.New(
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next,
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oxybuffer.MemRequestBodyBytes(config.MemRequestBodyBytes),
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oxybuffer.MaxRequestBodyBytes(config.MaxRequestBodyBytes),
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oxybuffer.MemResponseBodyBytes(config.MemResponseBodyBytes),
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oxybuffer.MaxResponseBodyBytes(config.MaxResponseBodyBytes),
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oxybuffer.Logger(logs.NewOxyWrapper(*logger)),
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oxybuffer.Verbose(logger.GetLevel() == zerolog.TraceLevel),
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oxybuffer.Cond(len(config.RetryExpression) > 0, oxybuffer.Retry(config.RetryExpression)),
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)
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if err != nil {
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return nil, err
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}
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return &buffer{
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name: name,
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buffer: oxyBuffer,
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}, nil
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}
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func (b *buffer) GetTracingInformation() (string, ext.SpanKindEnum) {
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return b.name, tracing.SpanKindNoneEnum
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}
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func (b *buffer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
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b.buffer.ServeHTTP(rw, req)
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}
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