mirror of
https://github.com/IBM/fp-go.git
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74 lines
2.1 KiB
Go
74 lines
2.1 KiB
Go
// Copyright (c) 2023 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package http
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import (
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"net"
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"net/http"
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"testing"
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"time"
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AR "github.com/IBM/fp-go/array"
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E "github.com/IBM/fp-go/either"
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HE "github.com/IBM/fp-go/either/http"
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"github.com/IBM/fp-go/errors"
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F "github.com/IBM/fp-go/function"
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IOE "github.com/IBM/fp-go/ioeither"
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O "github.com/IBM/fp-go/option"
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R "github.com/IBM/fp-go/retry"
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"github.com/stretchr/testify/assert"
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)
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var expLogBackoff = R.ExponentialBackoff(250 * time.Millisecond)
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// our retry policy with a 1s cap
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var testLogPolicy = R.CapDelay(
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2*time.Second,
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R.Monoid.Concat(expLogBackoff, R.LimitRetries(20)),
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)
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type PostItem struct {
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UserId uint `json:"userId"`
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Id uint `json:"id"`
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Title string `json:"title"`
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Body string `json:"body"`
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}
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func TestRetryHttp(t *testing.T) {
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// URLs to try, the first URLs have an invalid hostname
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urls := AR.From("https://jsonplaceholder1.typicode.com/posts/1", "https://jsonplaceholder2.typicode.com/posts/1", "https://jsonplaceholder3.typicode.com/posts/1", "https://jsonplaceholder4.typicode.com/posts/1", "https://jsonplaceholder.typicode.com/posts/1")
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client := MakeClient(&http.Client{})
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action := func(status R.RetryStatus) IOE.IOEither[error, *PostItem] {
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return F.Pipe2(
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HE.GetRequest(urls[status.IterNumber]),
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IOE.FromEither[error, *http.Request],
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IOE.Chain(ReadJson[*PostItem](client)),
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)
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}
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check := E.Fold(
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F.Flow2(
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errors.As[*net.DNSError](),
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O.IsSome[*net.DNSError],
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),
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F.Constant1[*PostItem](false),
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)
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item := IOE.Retrying(testLogPolicy, action, check)()
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assert.True(t, E.IsRight(item))
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}
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