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Dennis Adjei-Baah
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May 23, 2019
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finagle/h2/src/main/scala/com/twitter/finagle/buoyant/h2/H2HeaderInjector.scala
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package com.twitter.finagle.buoyant.h2 | ||
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import com.twitter.finagle | ||
import com.twitter.finagle._ | ||
import com.twitter.util.Future | ||
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object H2HeaderInjector { | ||
def module(headerMap: Map[String, String]): Stackable[ServiceFactory[Request, Response]] = { | ||
new finagle.Stack.Module0[ServiceFactory[Request, Response]] { | ||
override def make(next: ServiceFactory[Request, Response]): ServiceFactory[Request, Response] = | ||
new HeaderInjector(headerMap).andThen(next) | ||
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override def role: Stack.Role = Stack.Role("H2HeaderInjector") | ||
override def description: String = "Add arbitrary headers to H2 requests" | ||
} | ||
} | ||
} | ||
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class HeaderInjector(injectHeaders: Map[String, String]) extends SimpleFilter[Request, Response] { | ||
override def apply(request: Request, service: Service[Request, Response]): Future[Response] = { | ||
val req = request.dup() | ||
injectHeaders.foreach { kvPair => | ||
req.headers.add(kvPair._1, kvPair._2); () | ||
} | ||
service(req) | ||
} | ||
} |