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65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
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package middleware
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import (
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"github.com/labstack/echo"
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"github.com/labstack/gommon/random"
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)
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type (
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// RequestIDConfig defines the config for RequestID middleware.
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RequestIDConfig struct {
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// Skipper defines a function to skip middleware.
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Skipper Skipper
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// Generator defines a function to generate an ID.
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// Optional. Default value random.String(32).
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Generator func() string
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}
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)
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var (
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// DefaultRequestIDConfig is the default RequestID middleware config.
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DefaultRequestIDConfig = RequestIDConfig{
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Skipper: DefaultSkipper,
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Generator: generator,
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}
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)
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// RequestID returns a X-Request-ID middleware.
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func RequestID() echo.MiddlewareFunc {
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return RequestIDWithConfig(DefaultRequestIDConfig)
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}
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// RequestIDWithConfig returns a X-Request-ID middleware with config.
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func RequestIDWithConfig(config RequestIDConfig) echo.MiddlewareFunc {
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// Defaults
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if config.Skipper == nil {
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config.Skipper = DefaultRequestIDConfig.Skipper
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}
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if config.Generator == nil {
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config.Generator = generator
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}
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return func(next echo.HandlerFunc) echo.HandlerFunc {
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return func(c echo.Context) error {
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if config.Skipper(c) {
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return next(c)
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}
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req := c.Request()
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res := c.Response()
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rid := req.Header.Get(echo.HeaderXRequestID)
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if rid == "" {
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rid = config.Generator()
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}
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res.Header().Set(echo.HeaderXRequestID, rid)
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return next(c)
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}
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}
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}
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func generator() string {
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return random.String(32)
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}
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