-
Notifications
You must be signed in to change notification settings - Fork 788
/
ErrorHandling.scala
95 lines (83 loc) · 2.72 KB
/
ErrorHandling.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
/*
* Copyright 2014 http4s.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.http4s.server
package middleware
import cats._
import cats.data.Kleisli
import cats.syntax.all._
import org.http4s._
import org.http4s.headers._
import org.typelevel.ci._
object ErrorHandling {
def apply[F[_], G[_]](
k: Kleisli[F, Request[G], Response[G]]
)(implicit F: MonadThrow[F]): Kleisli[F, Request[G], Response[G]] =
Kleisli { req =>
val pf: PartialFunction[Throwable, F[Response[G]]] =
inDefaultServiceErrorHandler[F, G](F)(req)
k.run(req).handleErrorWith { e =>
pf.lift(e) match {
case Some(resp) => resp
case None => F.raiseError(e)
}
}
}
def httpRoutes[F[_]: MonadThrow](httpRoutes: HttpRoutes[F]): HttpRoutes[F] =
apply(httpRoutes)
def httpApp[F[_]: MonadThrow](httpApp: HttpApp[F]): HttpApp[F] =
apply(httpApp)
object Custom {
def recoverWith[F[_]: MonadThrow, G[_], A](
http: Kleisli[F, A, Response[G]]
)(pf: PartialFunction[Throwable, F[Response[G]]]): Kleisli[F, A, Response[G]] =
Kleisli { (a: A) =>
http.run(a).recoverWith(pf)
}
}
object Recover {
def total[F[_]: MonadThrow, G[_], A](
http: Kleisli[F, Request[G], Response[G]]
): Kleisli[F, Request[G], Response[G]] =
Kleisli { (a: Request[G]) =>
http.run(a).handleError(totalRecover(a.httpVersion))
}
def messageFailure[F[_]: MonadThrow, G[_], A](
http: Kleisli[F, Request[G], Response[G]]
): Kleisli[F, Request[G], Response[G]] =
Kleisli { (a: Request[G]) =>
http.run(a).recover(messageFailureRecover(a.httpVersion))
}
def messageFailureRecover[G[_]](
httpVersion: HttpVersion
): PartialFunction[Throwable, Response[G]] = { case m: MessageFailure =>
m.toHttpResponse[G](httpVersion)
}
def totalRecover[G[_]](
httpVersion: HttpVersion
): Throwable => Response[G] = {
case m: MessageFailure => m.toHttpResponse[G](httpVersion)
case _ =>
Response(
Status.InternalServerError,
httpVersion,
Headers(
Connection(ci"close"),
`Content-Length`.zero,
),
)
}
}
}