forked from vmware-archive/atc
/
hijackable_client.go
49 lines (40 loc) · 1.18 KB
/
hijackable_client.go
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package transport
import (
"net/http"
"github.com/concourse/retryhttp"
)
type hijackableClient struct {
db TransportDB
workerName string
innerHijackableClient retryhttp.HijackableClient
cachedHost string
}
func NewHijackableClient(workerName string, db TransportDB, innerHijackableClient retryhttp.HijackableClient) retryhttp.HijackableClient {
return &hijackableClient{
innerHijackableClient: innerHijackableClient,
workerName: workerName,
db: db,
cachedHost: "",
}
}
func (c *hijackableClient) Do(request *http.Request) (*http.Response, retryhttp.HijackCloser, error) {
if c.cachedHost == "" {
savedWorker, found, err := c.db.GetWorker(c.workerName)
if err != nil {
return nil, nil, err
}
if !found {
return nil, nil, ErrMissingWorker{WorkerName: c.workerName}
}
c.cachedHost = savedWorker.GardenAddr
}
updatedURL := *request.URL
updatedURL.Host = c.cachedHost
updatedRequest := *request
updatedRequest.URL = &updatedURL
response, hijackCloser, err := c.innerHijackableClient.Do(&updatedRequest)
if err != nil {
c.cachedHost = ""
}
return response, hijackCloser, err
}