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httpclient.go
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httpclient.go
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package utils
import (
"github.com/gojektech/heimdall"
"github.com/gojektech/heimdall/httpclient"
"github.com/gregjones/httpcache"
"github.com/gregjones/httpcache/diskcache"
"net"
"net/http"
"time"
)
var initialPause = time.Second
var maxPause = 30 * time.Second
var jitter = 100 * time.Millisecond
func newHDClient(timeout time.Duration, retries int, tr http.RoundTripper) *httpclient.Client {
retrier := heimdall.NewRetrier(
heimdall.NewExponentialBackoff(initialPause, maxPause, 2, jitter),
)
return httpclient.NewClient(
httpclient.WithHTTPClient(&http.Client{Transport: tr, Timeout: timeout}),
httpclient.WithRetrier(retrier),
httpclient.WithRetryCount(retries),
)
}
func newTransport(maxConns int) http.RoundTripper {
return &http.Transport{
MaxConnsPerHost: maxConns,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
Proxy: http.ProxyFromEnvironment,
DisableCompression: true,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
}
}
func NewHTTPCacheClient(timeout time.Duration, maxConns int, basePath string, retries int) *httpclient.Client {
tr := httpcache.NewTransport(diskcache.New(basePath))
tr.Transport = newTransport(maxConns)
if retries > 0 {
return newHDClient(timeout, retries, tr)
}
return httpclient.NewClient(
httpclient.WithHTTPClient(&http.Client{Transport: tr, Timeout: timeout}),
)
}
func NewHTTPClient(timeout time.Duration, maxConns int, retries int) *httpclient.Client {
tr := newTransport(maxConns)
if retries > 0 {
if retries > 0 {
return newHDClient(timeout, retries, tr)
}
}
return httpclient.NewClient(
httpclient.WithHTTPClient(&http.Client{Transport: tr, Timeout: timeout}),
)
}