diff options
Diffstat (limited to 'vendor/google.golang.org/api/transport/http/dial.go')
| -rw-r--r-- | vendor/google.golang.org/api/transport/http/dial.go | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/vendor/google.golang.org/api/transport/http/dial.go b/vendor/google.golang.org/api/transport/http/dial.go deleted file mode 100644 index 403509d..0000000 --- a/vendor/google.golang.org/api/transport/http/dial.go +++ /dev/null @@ -1,229 +0,0 @@ -// Copyright 2015 Google LLC. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package http supports network connections to HTTP servers. -// This package is not intended for use by end developers. Use the -// google.golang.org/api/option package to configure API clients. -package http - -import ( - "context" - "crypto/tls" - "errors" - "net" - "net/http" - "time" - - "go.opencensus.io/plugin/ochttp" - "golang.org/x/net/http2" - "golang.org/x/oauth2" - "google.golang.org/api/googleapi/transport" - "google.golang.org/api/internal" - "google.golang.org/api/internal/cert" - "google.golang.org/api/option" - "google.golang.org/api/transport/http/internal/propagation" -) - -// NewClient returns an HTTP client for use communicating with a Google cloud -// service, configured with the given ClientOptions. It also returns the endpoint -// for the service as specified in the options. -func NewClient(ctx context.Context, opts ...option.ClientOption) (*http.Client, string, error) { - settings, err := newSettings(opts) - if err != nil { - return nil, "", err - } - clientCertSource, endpoint, err := internal.GetClientCertificateSourceAndEndpoint(settings) - if err != nil { - return nil, "", err - } - // TODO(cbro): consider injecting the User-Agent even if an explicit HTTP client is provided? - if settings.HTTPClient != nil { - return settings.HTTPClient, endpoint, nil - } - trans, err := newTransport(ctx, defaultBaseTransport(ctx, clientCertSource), settings) - if err != nil { - return nil, "", err - } - return &http.Client{Transport: trans}, endpoint, nil -} - -// NewTransport creates an http.RoundTripper for use communicating with a Google -// cloud service, configured with the given ClientOptions. Its RoundTrip method delegates to base. -func NewTransport(ctx context.Context, base http.RoundTripper, opts ...option.ClientOption) (http.RoundTripper, error) { - settings, err := newSettings(opts) - if err != nil { - return nil, err - } - if settings.HTTPClient != nil { - return nil, errors.New("transport/http: WithHTTPClient passed to NewTransport") - } - return newTransport(ctx, base, settings) -} - -func newTransport(ctx context.Context, base http.RoundTripper, settings *internal.DialSettings) (http.RoundTripper, error) { - paramTransport := ¶meterTransport{ - base: base, - userAgent: settings.UserAgent, - requestReason: settings.RequestReason, - } - var trans http.RoundTripper = paramTransport - trans = addOCTransport(trans, settings) - switch { - case settings.NoAuth: - // Do nothing. - case settings.APIKey != "": - paramTransport.quotaProject = internal.GetQuotaProject(nil, settings.QuotaProject) - trans = &transport.APIKey{ - Transport: trans, - Key: settings.APIKey, - } - default: - creds, err := internal.Creds(ctx, settings) - if err != nil { - return nil, err - } - paramTransport.quotaProject = internal.GetQuotaProject(creds, settings.QuotaProject) - ts := creds.TokenSource - if settings.ImpersonationConfig == nil && settings.TokenSource != nil { - ts = settings.TokenSource - } - trans = &oauth2.Transport{ - Base: trans, - Source: ts, - } - } - return trans, nil -} - -func newSettings(opts []option.ClientOption) (*internal.DialSettings, error) { - var o internal.DialSettings - for _, opt := range opts { - opt.Apply(&o) - } - if err := o.Validate(); err != nil { - return nil, err - } - if o.GRPCConn != nil { - return nil, errors.New("unsupported gRPC connection specified") - } - return &o, nil -} - -type parameterTransport struct { - userAgent string - quotaProject string - requestReason string - - base http.RoundTripper -} - -func (t *parameterTransport) RoundTrip(req *http.Request) (*http.Response, error) { - rt := t.base - if rt == nil { - return nil, errors.New("transport: no Transport specified") - } - newReq := *req - newReq.Header = make(http.Header) - for k, vv := range req.Header { - newReq.Header[k] = vv - } - if t.userAgent != "" { - // TODO(cbro): append to existing User-Agent header? - newReq.Header.Set("User-Agent", t.userAgent) - } - - // Attach system parameters into the header - if t.quotaProject != "" { - newReq.Header.Set("X-Goog-User-Project", t.quotaProject) - } - if t.requestReason != "" { - newReq.Header.Set("X-Goog-Request-Reason", t.requestReason) - } - - return rt.RoundTrip(&newReq) -} - -// Set at init time by dial_appengine.go. If nil, we're not on App Engine. -var appengineUrlfetchHook func(context.Context) http.RoundTripper - -// defaultBaseTransport returns the base HTTP transport. -// On App Engine, this is urlfetch.Transport. -// Otherwise, use a default transport, taking most defaults from -// http.DefaultTransport. -// If TLSCertificate is available, set TLSClientConfig as well. -func defaultBaseTransport(ctx context.Context, clientCertSource cert.Source) http.RoundTripper { - if appengineUrlfetchHook != nil { - return appengineUrlfetchHook(ctx) - } - - // Copy http.DefaultTransport except for MaxIdleConnsPerHost setting, - // which is increased due to reported performance issues under load in the GCS - // client. Transport.Clone is only available in Go 1.13 and up. - trans := clonedTransport(http.DefaultTransport) - if trans == nil { - trans = fallbackBaseTransport() - } - trans.MaxIdleConnsPerHost = 100 - - if clientCertSource != nil { - trans.TLSClientConfig = &tls.Config{ - GetClientCertificate: clientCertSource, - } - } - - configureHTTP2(trans) - - return trans -} - -// configureHTTP2 configures the ReadIdleTimeout HTTP/2 option for the -// transport. This allows broken idle connections to be pruned more quickly, -// preventing the client from attempting to re-use connections that will no -// longer work. -func configureHTTP2(trans *http.Transport) { - http2Trans, err := http2.ConfigureTransports(trans) - if err == nil { - http2Trans.ReadIdleTimeout = time.Second * 31 - } -} - -// fallbackBaseTransport is used in <go1.13 as well as in the rare case if -// http.DefaultTransport has been reassigned something that's not a -// *http.Transport. -func fallbackBaseTransport() *http.Transport { - return &http.Transport{ - Proxy: http.ProxyFromEnvironment, - DialContext: (&net.Dialer{ - Timeout: 30 * time.Second, - KeepAlive: 30 * time.Second, - DualStack: true, - }).DialContext, - MaxIdleConns: 100, - MaxIdleConnsPerHost: 100, - IdleConnTimeout: 90 * time.Second, - TLSHandshakeTimeout: 10 * time.Second, - ExpectContinueTimeout: 1 * time.Second, - } -} - -func addOCTransport(trans http.RoundTripper, settings *internal.DialSettings) http.RoundTripper { - if settings.TelemetryDisabled { - return trans - } - return &ochttp.Transport{ - Base: trans, - Propagation: &propagation.HTTPFormat{}, - } -} - -// clonedTransport returns the given RoundTripper as a cloned *http.Transport. -// It returns nil if the RoundTripper can't be cloned or coerced to -// *http.Transport. -func clonedTransport(rt http.RoundTripper) *http.Transport { - t, ok := rt.(*http.Transport) - if !ok { - return nil - } - return t.Clone() -} |