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ServletContextSyntax.scala
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ServletContextSyntax.scala
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package org.http4s
package servlet
package syntax
import cats.effect._
import javax.servlet.{ServletContext, ServletRegistration}
import org.http4s.server.{AsyncTimeoutSupport, DefaultServiceErrorHandler}
import scala.concurrent.ExecutionContext
trait ServletContextSyntax {
implicit def ToServletContextOps(self: ServletContext): ServletContextOps =
new ServletContextOps(self)
}
final class ServletContextOps private[syntax] (val self: ServletContext) extends AnyVal {
/** Wraps an HttpService and mounts it as a servlet */
def mountService[F[_]: Effect](name: String, service: HttpService[F], mapping: String = "/*")(
implicit ec: ExecutionContext = ExecutionContext.global): ServletRegistration.Dynamic = {
val servlet = new Http4sServlet(
service = service,
asyncTimeout = AsyncTimeoutSupport.DefaultAsyncTimeout,
executionContext = ec,
servletIo = servletIo,
serviceErrorHandler = DefaultServiceErrorHandler[F]
)
val reg = self.addServlet(name, servlet)
reg.setLoadOnStartup(1)
reg.setAsyncSupported(true)
reg.addMapping(mapping)
reg
}
private def servletIo[F[_]: Effect]: ServletIo[F] = {
val version = ServletApiVersion(self.getMajorVersion, self.getMinorVersion)
if (version >= ServletApiVersion(3, 1))
NonBlockingServletIo(DefaultChunkSize)
else
BlockingServletIo(DefaultChunkSize)
}
}
object servletContext extends ServletContextSyntax