Dependencies for the affinity router and the
affinity routing daemon.
Change-Id: Icda72c3594ef7f8f0bc0c33dc03087a4c25529ca
diff --git a/vendor/google.golang.org/appengine/internal/api_classic.go b/vendor/google.golang.org/appengine/internal/api_classic.go
new file mode 100644
index 0000000..f0f40b2
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/api_classic.go
@@ -0,0 +1,169 @@
+// Copyright 2015 Google Inc. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+// +build appengine
+
+package internal
+
+import (
+ "errors"
+ "fmt"
+ "net/http"
+ "time"
+
+ "appengine"
+ "appengine_internal"
+ basepb "appengine_internal/base"
+
+ "github.com/golang/protobuf/proto"
+ netcontext "golang.org/x/net/context"
+)
+
+var contextKey = "holds an appengine.Context"
+
+// fromContext returns the App Engine context or nil if ctx is not
+// derived from an App Engine context.
+func fromContext(ctx netcontext.Context) appengine.Context {
+ c, _ := ctx.Value(&contextKey).(appengine.Context)
+ return c
+}
+
+// This is only for classic App Engine adapters.
+func ClassicContextFromContext(ctx netcontext.Context) (appengine.Context, error) {
+ c := fromContext(ctx)
+ if c == nil {
+ return nil, errNotAppEngineContext
+ }
+ return c, nil
+}
+
+func withContext(parent netcontext.Context, c appengine.Context) netcontext.Context {
+ ctx := netcontext.WithValue(parent, &contextKey, c)
+
+ s := &basepb.StringProto{}
+ c.Call("__go__", "GetNamespace", &basepb.VoidProto{}, s, nil)
+ if ns := s.GetValue(); ns != "" {
+ ctx = NamespacedContext(ctx, ns)
+ }
+
+ return ctx
+}
+
+func IncomingHeaders(ctx netcontext.Context) http.Header {
+ if c := fromContext(ctx); c != nil {
+ if req, ok := c.Request().(*http.Request); ok {
+ return req.Header
+ }
+ }
+ return nil
+}
+
+func ReqContext(req *http.Request) netcontext.Context {
+ return WithContext(netcontext.Background(), req)
+}
+
+func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
+ c := appengine.NewContext(req)
+ return withContext(parent, c)
+}
+
+type testingContext struct {
+ appengine.Context
+
+ req *http.Request
+}
+
+func (t *testingContext) FullyQualifiedAppID() string { return "dev~testcontext" }
+func (t *testingContext) Call(service, method string, _, _ appengine_internal.ProtoMessage, _ *appengine_internal.CallOptions) error {
+ if service == "__go__" && method == "GetNamespace" {
+ return nil
+ }
+ return fmt.Errorf("testingContext: unsupported Call")
+}
+func (t *testingContext) Request() interface{} { return t.req }
+
+func ContextForTesting(req *http.Request) netcontext.Context {
+ return withContext(netcontext.Background(), &testingContext{req: req})
+}
+
+func Call(ctx netcontext.Context, service, method string, in, out proto.Message) error {
+ if ns := NamespaceFromContext(ctx); ns != "" {
+ if fn, ok := NamespaceMods[service]; ok {
+ fn(in, ns)
+ }
+ }
+
+ if f, ctx, ok := callOverrideFromContext(ctx); ok {
+ return f(ctx, service, method, in, out)
+ }
+
+ // Handle already-done contexts quickly.
+ select {
+ case <-ctx.Done():
+ return ctx.Err()
+ default:
+ }
+
+ c := fromContext(ctx)
+ if c == nil {
+ // Give a good error message rather than a panic lower down.
+ return errNotAppEngineContext
+ }
+
+ // Apply transaction modifications if we're in a transaction.
+ if t := transactionFromContext(ctx); t != nil {
+ if t.finished {
+ return errors.New("transaction context has expired")
+ }
+ applyTransaction(in, &t.transaction)
+ }
+
+ var opts *appengine_internal.CallOptions
+ if d, ok := ctx.Deadline(); ok {
+ opts = &appengine_internal.CallOptions{
+ Timeout: d.Sub(time.Now()),
+ }
+ }
+
+ err := c.Call(service, method, in, out, opts)
+ switch v := err.(type) {
+ case *appengine_internal.APIError:
+ return &APIError{
+ Service: v.Service,
+ Detail: v.Detail,
+ Code: v.Code,
+ }
+ case *appengine_internal.CallError:
+ return &CallError{
+ Detail: v.Detail,
+ Code: v.Code,
+ Timeout: v.Timeout,
+ }
+ }
+ return err
+}
+
+func handleHTTP(w http.ResponseWriter, r *http.Request) {
+ panic("handleHTTP called; this should be impossible")
+}
+
+func logf(c appengine.Context, level int64, format string, args ...interface{}) {
+ var fn func(format string, args ...interface{})
+ switch level {
+ case 0:
+ fn = c.Debugf
+ case 1:
+ fn = c.Infof
+ case 2:
+ fn = c.Warningf
+ case 3:
+ fn = c.Errorf
+ case 4:
+ fn = c.Criticalf
+ default:
+ // This shouldn't happen.
+ fn = c.Criticalf
+ }
+ fn(format, args...)
+}