Dependencies for the affinity router and the
affinity routing daemon.
Change-Id: Icda72c3594ef7f8f0bc0c33dc03087a4c25529ca
diff --git a/vendor/google.golang.org/appengine/LICENSE b/vendor/google.golang.org/appengine/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/vendor/google.golang.org/appengine/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
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+ "Contribution" shall mean any work of authorship, including
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+ to that Work or Derivative Works thereof, that is intentionally
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+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
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+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
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+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
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+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
diff --git a/vendor/google.golang.org/appengine/internal/api.go b/vendor/google.golang.org/appengine/internal/api.go
new file mode 100644
index 0000000..bbc1cb9
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/api.go
@@ -0,0 +1,671 @@
+// Copyright 2011 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 (
+ "bytes"
+ "errors"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "net"
+ "net/http"
+ "net/url"
+ "os"
+ "runtime"
+ "strconv"
+ "strings"
+ "sync"
+ "sync/atomic"
+ "time"
+
+ "github.com/golang/protobuf/proto"
+ netcontext "golang.org/x/net/context"
+
+ basepb "google.golang.org/appengine/internal/base"
+ logpb "google.golang.org/appengine/internal/log"
+ remotepb "google.golang.org/appengine/internal/remote_api"
+)
+
+const (
+ apiPath = "/rpc_http"
+ defaultTicketSuffix = "/default.20150612t184001.0"
+)
+
+var (
+ // Incoming headers.
+ ticketHeader = http.CanonicalHeaderKey("X-AppEngine-API-Ticket")
+ dapperHeader = http.CanonicalHeaderKey("X-Google-DapperTraceInfo")
+ traceHeader = http.CanonicalHeaderKey("X-Cloud-Trace-Context")
+ curNamespaceHeader = http.CanonicalHeaderKey("X-AppEngine-Current-Namespace")
+ userIPHeader = http.CanonicalHeaderKey("X-AppEngine-User-IP")
+ remoteAddrHeader = http.CanonicalHeaderKey("X-AppEngine-Remote-Addr")
+
+ // Outgoing headers.
+ apiEndpointHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Endpoint")
+ apiEndpointHeaderValue = []string{"app-engine-apis"}
+ apiMethodHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Method")
+ apiMethodHeaderValue = []string{"/VMRemoteAPI.CallRemoteAPI"}
+ apiDeadlineHeader = http.CanonicalHeaderKey("X-Google-RPC-Service-Deadline")
+ apiContentType = http.CanonicalHeaderKey("Content-Type")
+ apiContentTypeValue = []string{"application/octet-stream"}
+ logFlushHeader = http.CanonicalHeaderKey("X-AppEngine-Log-Flush-Count")
+
+ apiHTTPClient = &http.Client{
+ Transport: &http.Transport{
+ Proxy: http.ProxyFromEnvironment,
+ Dial: limitDial,
+ },
+ }
+
+ defaultTicketOnce sync.Once
+ defaultTicket string
+ backgroundContextOnce sync.Once
+ backgroundContext netcontext.Context
+)
+
+func apiURL() *url.URL {
+ host, port := "appengine.googleapis.internal", "10001"
+ if h := os.Getenv("API_HOST"); h != "" {
+ host = h
+ }
+ if p := os.Getenv("API_PORT"); p != "" {
+ port = p
+ }
+ return &url.URL{
+ Scheme: "http",
+ Host: host + ":" + port,
+ Path: apiPath,
+ }
+}
+
+func handleHTTP(w http.ResponseWriter, r *http.Request) {
+ c := &context{
+ req: r,
+ outHeader: w.Header(),
+ apiURL: apiURL(),
+ }
+ r = r.WithContext(withContext(r.Context(), c))
+ c.req = r
+
+ stopFlushing := make(chan int)
+
+ // Patch up RemoteAddr so it looks reasonable.
+ if addr := r.Header.Get(userIPHeader); addr != "" {
+ r.RemoteAddr = addr
+ } else if addr = r.Header.Get(remoteAddrHeader); addr != "" {
+ r.RemoteAddr = addr
+ } else {
+ // Should not normally reach here, but pick a sensible default anyway.
+ r.RemoteAddr = "127.0.0.1"
+ }
+ // The address in the headers will most likely be of these forms:
+ // 123.123.123.123
+ // 2001:db8::1
+ // net/http.Request.RemoteAddr is specified to be in "IP:port" form.
+ if _, _, err := net.SplitHostPort(r.RemoteAddr); err != nil {
+ // Assume the remote address is only a host; add a default port.
+ r.RemoteAddr = net.JoinHostPort(r.RemoteAddr, "80")
+ }
+
+ // Start goroutine responsible for flushing app logs.
+ // This is done after adding c to ctx.m (and stopped before removing it)
+ // because flushing logs requires making an API call.
+ go c.logFlusher(stopFlushing)
+
+ executeRequestSafely(c, r)
+ c.outHeader = nil // make sure header changes aren't respected any more
+
+ stopFlushing <- 1 // any logging beyond this point will be dropped
+
+ // Flush any pending logs asynchronously.
+ c.pendingLogs.Lock()
+ flushes := c.pendingLogs.flushes
+ if len(c.pendingLogs.lines) > 0 {
+ flushes++
+ }
+ c.pendingLogs.Unlock()
+ flushed := make(chan struct{})
+ go func() {
+ defer close(flushed)
+ // Force a log flush, because with very short requests we
+ // may not ever flush logs.
+ c.flushLog(true)
+ }()
+ w.Header().Set(logFlushHeader, strconv.Itoa(flushes))
+
+ // Avoid nil Write call if c.Write is never called.
+ if c.outCode != 0 {
+ w.WriteHeader(c.outCode)
+ }
+ if c.outBody != nil {
+ w.Write(c.outBody)
+ }
+ // Wait for the last flush to complete before returning,
+ // otherwise the security ticket will not be valid.
+ <-flushed
+}
+
+func executeRequestSafely(c *context, r *http.Request) {
+ defer func() {
+ if x := recover(); x != nil {
+ logf(c, 4, "%s", renderPanic(x)) // 4 == critical
+ c.outCode = 500
+ }
+ }()
+
+ http.DefaultServeMux.ServeHTTP(c, r)
+}
+
+func renderPanic(x interface{}) string {
+ buf := make([]byte, 16<<10) // 16 KB should be plenty
+ buf = buf[:runtime.Stack(buf, false)]
+
+ // Remove the first few stack frames:
+ // this func
+ // the recover closure in the caller
+ // That will root the stack trace at the site of the panic.
+ const (
+ skipStart = "internal.renderPanic"
+ skipFrames = 2
+ )
+ start := bytes.Index(buf, []byte(skipStart))
+ p := start
+ for i := 0; i < skipFrames*2 && p+1 < len(buf); i++ {
+ p = bytes.IndexByte(buf[p+1:], '\n') + p + 1
+ if p < 0 {
+ break
+ }
+ }
+ if p >= 0 {
+ // buf[start:p+1] is the block to remove.
+ // Copy buf[p+1:] over buf[start:] and shrink buf.
+ copy(buf[start:], buf[p+1:])
+ buf = buf[:len(buf)-(p+1-start)]
+ }
+
+ // Add panic heading.
+ head := fmt.Sprintf("panic: %v\n\n", x)
+ if len(head) > len(buf) {
+ // Extremely unlikely to happen.
+ return head
+ }
+ copy(buf[len(head):], buf)
+ copy(buf, head)
+
+ return string(buf)
+}
+
+// context represents the context of an in-flight HTTP request.
+// It implements the appengine.Context and http.ResponseWriter interfaces.
+type context struct {
+ req *http.Request
+
+ outCode int
+ outHeader http.Header
+ outBody []byte
+
+ pendingLogs struct {
+ sync.Mutex
+ lines []*logpb.UserAppLogLine
+ flushes int
+ }
+
+ apiURL *url.URL
+}
+
+var contextKey = "holds a *context"
+
+// jointContext joins two contexts in a superficial way.
+// It takes values and timeouts from a base context, and only values from another context.
+type jointContext struct {
+ base netcontext.Context
+ valuesOnly netcontext.Context
+}
+
+func (c jointContext) Deadline() (time.Time, bool) {
+ return c.base.Deadline()
+}
+
+func (c jointContext) Done() <-chan struct{} {
+ return c.base.Done()
+}
+
+func (c jointContext) Err() error {
+ return c.base.Err()
+}
+
+func (c jointContext) Value(key interface{}) interface{} {
+ if val := c.base.Value(key); val != nil {
+ return val
+ }
+ return c.valuesOnly.Value(key)
+}
+
+// fromContext returns the App Engine context or nil if ctx is not
+// derived from an App Engine context.
+func fromContext(ctx netcontext.Context) *context {
+ c, _ := ctx.Value(&contextKey).(*context)
+ return c
+}
+
+func withContext(parent netcontext.Context, c *context) netcontext.Context {
+ ctx := netcontext.WithValue(parent, &contextKey, c)
+ if ns := c.req.Header.Get(curNamespaceHeader); ns != "" {
+ ctx = withNamespace(ctx, ns)
+ }
+ return ctx
+}
+
+func toContext(c *context) netcontext.Context {
+ return withContext(netcontext.Background(), c)
+}
+
+func IncomingHeaders(ctx netcontext.Context) http.Header {
+ if c := fromContext(ctx); c != nil {
+ return c.req.Header
+ }
+ return nil
+}
+
+func ReqContext(req *http.Request) netcontext.Context {
+ return req.Context()
+}
+
+func WithContext(parent netcontext.Context, req *http.Request) netcontext.Context {
+ return jointContext{
+ base: parent,
+ valuesOnly: req.Context(),
+ }
+}
+
+// DefaultTicket returns a ticket used for background context or dev_appserver.
+func DefaultTicket() string {
+ defaultTicketOnce.Do(func() {
+ if IsDevAppServer() {
+ defaultTicket = "testapp" + defaultTicketSuffix
+ return
+ }
+ appID := partitionlessAppID()
+ escAppID := strings.Replace(strings.Replace(appID, ":", "_", -1), ".", "_", -1)
+ majVersion := VersionID(nil)
+ if i := strings.Index(majVersion, "."); i > 0 {
+ majVersion = majVersion[:i]
+ }
+ defaultTicket = fmt.Sprintf("%s/%s.%s.%s", escAppID, ModuleName(nil), majVersion, InstanceID())
+ })
+ return defaultTicket
+}
+
+func BackgroundContext() netcontext.Context {
+ backgroundContextOnce.Do(func() {
+ // Compute background security ticket.
+ ticket := DefaultTicket()
+
+ c := &context{
+ req: &http.Request{
+ Header: http.Header{
+ ticketHeader: []string{ticket},
+ },
+ },
+ apiURL: apiURL(),
+ }
+ backgroundContext = toContext(c)
+
+ // TODO(dsymonds): Wire up the shutdown handler to do a final flush.
+ go c.logFlusher(make(chan int))
+ })
+
+ return backgroundContext
+}
+
+// RegisterTestRequest registers the HTTP request req for testing, such that
+// any API calls are sent to the provided URL. It returns a closure to delete
+// the registration.
+// It should only be used by aetest package.
+func RegisterTestRequest(req *http.Request, apiURL *url.URL, decorate func(netcontext.Context) netcontext.Context) (*http.Request, func()) {
+ c := &context{
+ req: req,
+ apiURL: apiURL,
+ }
+ ctx := withContext(decorate(req.Context()), c)
+ req = req.WithContext(ctx)
+ c.req = req
+ return req, func() {}
+}
+
+var errTimeout = &CallError{
+ Detail: "Deadline exceeded",
+ Code: int32(remotepb.RpcError_CANCELLED),
+ Timeout: true,
+}
+
+func (c *context) Header() http.Header { return c.outHeader }
+
+// Copied from $GOROOT/src/pkg/net/http/transfer.go. Some response status
+// codes do not permit a response body (nor response entity headers such as
+// Content-Length, Content-Type, etc).
+func bodyAllowedForStatus(status int) bool {
+ switch {
+ case status >= 100 && status <= 199:
+ return false
+ case status == 204:
+ return false
+ case status == 304:
+ return false
+ }
+ return true
+}
+
+func (c *context) Write(b []byte) (int, error) {
+ if c.outCode == 0 {
+ c.WriteHeader(http.StatusOK)
+ }
+ if len(b) > 0 && !bodyAllowedForStatus(c.outCode) {
+ return 0, http.ErrBodyNotAllowed
+ }
+ c.outBody = append(c.outBody, b...)
+ return len(b), nil
+}
+
+func (c *context) WriteHeader(code int) {
+ if c.outCode != 0 {
+ logf(c, 3, "WriteHeader called multiple times on request.") // error level
+ return
+ }
+ c.outCode = code
+}
+
+func (c *context) post(body []byte, timeout time.Duration) (b []byte, err error) {
+ hreq := &http.Request{
+ Method: "POST",
+ URL: c.apiURL,
+ Header: http.Header{
+ apiEndpointHeader: apiEndpointHeaderValue,
+ apiMethodHeader: apiMethodHeaderValue,
+ apiContentType: apiContentTypeValue,
+ apiDeadlineHeader: []string{strconv.FormatFloat(timeout.Seconds(), 'f', -1, 64)},
+ },
+ Body: ioutil.NopCloser(bytes.NewReader(body)),
+ ContentLength: int64(len(body)),
+ Host: c.apiURL.Host,
+ }
+ if info := c.req.Header.Get(dapperHeader); info != "" {
+ hreq.Header.Set(dapperHeader, info)
+ }
+ if info := c.req.Header.Get(traceHeader); info != "" {
+ hreq.Header.Set(traceHeader, info)
+ }
+
+ tr := apiHTTPClient.Transport.(*http.Transport)
+
+ var timedOut int32 // atomic; set to 1 if timed out
+ t := time.AfterFunc(timeout, func() {
+ atomic.StoreInt32(&timedOut, 1)
+ tr.CancelRequest(hreq)
+ })
+ defer t.Stop()
+ defer func() {
+ // Check if timeout was exceeded.
+ if atomic.LoadInt32(&timedOut) != 0 {
+ err = errTimeout
+ }
+ }()
+
+ hresp, err := apiHTTPClient.Do(hreq)
+ if err != nil {
+ return nil, &CallError{
+ Detail: fmt.Sprintf("service bridge HTTP failed: %v", err),
+ Code: int32(remotepb.RpcError_UNKNOWN),
+ }
+ }
+ defer hresp.Body.Close()
+ hrespBody, err := ioutil.ReadAll(hresp.Body)
+ if hresp.StatusCode != 200 {
+ return nil, &CallError{
+ Detail: fmt.Sprintf("service bridge returned HTTP %d (%q)", hresp.StatusCode, hrespBody),
+ Code: int32(remotepb.RpcError_UNKNOWN),
+ }
+ }
+ if err != nil {
+ return nil, &CallError{
+ Detail: fmt.Sprintf("service bridge response bad: %v", err),
+ Code: int32(remotepb.RpcError_UNKNOWN),
+ }
+ }
+ return hrespBody, nil
+}
+
+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)
+ }
+
+ // Default RPC timeout is 60s.
+ timeout := 60 * time.Second
+ if deadline, ok := ctx.Deadline(); ok {
+ timeout = deadline.Sub(time.Now())
+ }
+
+ data, err := proto.Marshal(in)
+ if err != nil {
+ return err
+ }
+
+ ticket := c.req.Header.Get(ticketHeader)
+ // Use a test ticket under test environment.
+ if ticket == "" {
+ if appid := ctx.Value(&appIDOverrideKey); appid != nil {
+ ticket = appid.(string) + defaultTicketSuffix
+ }
+ }
+ // Fall back to use background ticket when the request ticket is not available in Flex or dev_appserver.
+ if ticket == "" {
+ ticket = DefaultTicket()
+ }
+ req := &remotepb.Request{
+ ServiceName: &service,
+ Method: &method,
+ Request: data,
+ RequestId: &ticket,
+ }
+ hreqBody, err := proto.Marshal(req)
+ if err != nil {
+ return err
+ }
+
+ hrespBody, err := c.post(hreqBody, timeout)
+ if err != nil {
+ return err
+ }
+
+ res := &remotepb.Response{}
+ if err := proto.Unmarshal(hrespBody, res); err != nil {
+ return err
+ }
+ if res.RpcError != nil {
+ ce := &CallError{
+ Detail: res.RpcError.GetDetail(),
+ Code: *res.RpcError.Code,
+ }
+ switch remotepb.RpcError_ErrorCode(ce.Code) {
+ case remotepb.RpcError_CANCELLED, remotepb.RpcError_DEADLINE_EXCEEDED:
+ ce.Timeout = true
+ }
+ return ce
+ }
+ if res.ApplicationError != nil {
+ return &APIError{
+ Service: *req.ServiceName,
+ Detail: res.ApplicationError.GetDetail(),
+ Code: *res.ApplicationError.Code,
+ }
+ }
+ if res.Exception != nil || res.JavaException != nil {
+ // This shouldn't happen, but let's be defensive.
+ return &CallError{
+ Detail: "service bridge returned exception",
+ Code: int32(remotepb.RpcError_UNKNOWN),
+ }
+ }
+ return proto.Unmarshal(res.Response, out)
+}
+
+func (c *context) Request() *http.Request {
+ return c.req
+}
+
+func (c *context) addLogLine(ll *logpb.UserAppLogLine) {
+ // Truncate long log lines.
+ // TODO(dsymonds): Check if this is still necessary.
+ const lim = 8 << 10
+ if len(*ll.Message) > lim {
+ suffix := fmt.Sprintf("...(length %d)", len(*ll.Message))
+ ll.Message = proto.String((*ll.Message)[:lim-len(suffix)] + suffix)
+ }
+
+ c.pendingLogs.Lock()
+ c.pendingLogs.lines = append(c.pendingLogs.lines, ll)
+ c.pendingLogs.Unlock()
+}
+
+var logLevelName = map[int64]string{
+ 0: "DEBUG",
+ 1: "INFO",
+ 2: "WARNING",
+ 3: "ERROR",
+ 4: "CRITICAL",
+}
+
+func logf(c *context, level int64, format string, args ...interface{}) {
+ if c == nil {
+ panic("not an App Engine context")
+ }
+ s := fmt.Sprintf(format, args...)
+ s = strings.TrimRight(s, "\n") // Remove any trailing newline characters.
+ c.addLogLine(&logpb.UserAppLogLine{
+ TimestampUsec: proto.Int64(time.Now().UnixNano() / 1e3),
+ Level: &level,
+ Message: &s,
+ })
+ // Only duplicate log to stderr if not running on App Engine second generation
+ if !IsSecondGen() {
+ log.Print(logLevelName[level] + ": " + s)
+ }
+}
+
+// flushLog attempts to flush any pending logs to the appserver.
+// It should not be called concurrently.
+func (c *context) flushLog(force bool) (flushed bool) {
+ c.pendingLogs.Lock()
+ // Grab up to 30 MB. We can get away with up to 32 MB, but let's be cautious.
+ n, rem := 0, 30<<20
+ for ; n < len(c.pendingLogs.lines); n++ {
+ ll := c.pendingLogs.lines[n]
+ // Each log line will require about 3 bytes of overhead.
+ nb := proto.Size(ll) + 3
+ if nb > rem {
+ break
+ }
+ rem -= nb
+ }
+ lines := c.pendingLogs.lines[:n]
+ c.pendingLogs.lines = c.pendingLogs.lines[n:]
+ c.pendingLogs.Unlock()
+
+ if len(lines) == 0 && !force {
+ // Nothing to flush.
+ return false
+ }
+
+ rescueLogs := false
+ defer func() {
+ if rescueLogs {
+ c.pendingLogs.Lock()
+ c.pendingLogs.lines = append(lines, c.pendingLogs.lines...)
+ c.pendingLogs.Unlock()
+ }
+ }()
+
+ buf, err := proto.Marshal(&logpb.UserAppLogGroup{
+ LogLine: lines,
+ })
+ if err != nil {
+ log.Printf("internal.flushLog: marshaling UserAppLogGroup: %v", err)
+ rescueLogs = true
+ return false
+ }
+
+ req := &logpb.FlushRequest{
+ Logs: buf,
+ }
+ res := &basepb.VoidProto{}
+ c.pendingLogs.Lock()
+ c.pendingLogs.flushes++
+ c.pendingLogs.Unlock()
+ if err := Call(toContext(c), "logservice", "Flush", req, res); err != nil {
+ log.Printf("internal.flushLog: Flush RPC: %v", err)
+ rescueLogs = true
+ return false
+ }
+ return true
+}
+
+const (
+ // Log flushing parameters.
+ flushInterval = 1 * time.Second
+ forceFlushInterval = 60 * time.Second
+)
+
+func (c *context) logFlusher(stop <-chan int) {
+ lastFlush := time.Now()
+ tick := time.NewTicker(flushInterval)
+ for {
+ select {
+ case <-stop:
+ // Request finished.
+ tick.Stop()
+ return
+ case <-tick.C:
+ force := time.Now().Sub(lastFlush) > forceFlushInterval
+ if c.flushLog(force) {
+ lastFlush = time.Now()
+ }
+ }
+ }
+}
+
+func ContextForTesting(req *http.Request) netcontext.Context {
+ return toContext(&context{req: req})
+}
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...)
+}
diff --git a/vendor/google.golang.org/appengine/internal/api_common.go b/vendor/google.golang.org/appengine/internal/api_common.go
new file mode 100644
index 0000000..e0c0b21
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/api_common.go
@@ -0,0 +1,123 @@
+// 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.
+
+package internal
+
+import (
+ "errors"
+ "os"
+
+ "github.com/golang/protobuf/proto"
+ netcontext "golang.org/x/net/context"
+)
+
+var errNotAppEngineContext = errors.New("not an App Engine context")
+
+type CallOverrideFunc func(ctx netcontext.Context, service, method string, in, out proto.Message) error
+
+var callOverrideKey = "holds []CallOverrideFunc"
+
+func WithCallOverride(ctx netcontext.Context, f CallOverrideFunc) netcontext.Context {
+ // We avoid appending to any existing call override
+ // so we don't risk overwriting a popped stack below.
+ var cofs []CallOverrideFunc
+ if uf, ok := ctx.Value(&callOverrideKey).([]CallOverrideFunc); ok {
+ cofs = append(cofs, uf...)
+ }
+ cofs = append(cofs, f)
+ return netcontext.WithValue(ctx, &callOverrideKey, cofs)
+}
+
+func callOverrideFromContext(ctx netcontext.Context) (CallOverrideFunc, netcontext.Context, bool) {
+ cofs, _ := ctx.Value(&callOverrideKey).([]CallOverrideFunc)
+ if len(cofs) == 0 {
+ return nil, nil, false
+ }
+ // We found a list of overrides; grab the last, and reconstitute a
+ // context that will hide it.
+ f := cofs[len(cofs)-1]
+ ctx = netcontext.WithValue(ctx, &callOverrideKey, cofs[:len(cofs)-1])
+ return f, ctx, true
+}
+
+type logOverrideFunc func(level int64, format string, args ...interface{})
+
+var logOverrideKey = "holds a logOverrideFunc"
+
+func WithLogOverride(ctx netcontext.Context, f logOverrideFunc) netcontext.Context {
+ return netcontext.WithValue(ctx, &logOverrideKey, f)
+}
+
+var appIDOverrideKey = "holds a string, being the full app ID"
+
+func WithAppIDOverride(ctx netcontext.Context, appID string) netcontext.Context {
+ return netcontext.WithValue(ctx, &appIDOverrideKey, appID)
+}
+
+var namespaceKey = "holds the namespace string"
+
+func withNamespace(ctx netcontext.Context, ns string) netcontext.Context {
+ return netcontext.WithValue(ctx, &namespaceKey, ns)
+}
+
+func NamespaceFromContext(ctx netcontext.Context) string {
+ // If there's no namespace, return the empty string.
+ ns, _ := ctx.Value(&namespaceKey).(string)
+ return ns
+}
+
+// FullyQualifiedAppID returns the fully-qualified application ID.
+// This may contain a partition prefix (e.g. "s~" for High Replication apps),
+// or a domain prefix (e.g. "example.com:").
+func FullyQualifiedAppID(ctx netcontext.Context) string {
+ if id, ok := ctx.Value(&appIDOverrideKey).(string); ok {
+ return id
+ }
+ return fullyQualifiedAppID(ctx)
+}
+
+func Logf(ctx netcontext.Context, level int64, format string, args ...interface{}) {
+ if f, ok := ctx.Value(&logOverrideKey).(logOverrideFunc); ok {
+ f(level, format, args...)
+ return
+ }
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ logf(c, level, format, args...)
+}
+
+// NamespacedContext wraps a Context to support namespaces.
+func NamespacedContext(ctx netcontext.Context, namespace string) netcontext.Context {
+ return withNamespace(ctx, namespace)
+}
+
+// SetTestEnv sets the env variables for testing background ticket in Flex.
+func SetTestEnv() func() {
+ var environ = []struct {
+ key, value string
+ }{
+ {"GAE_LONG_APP_ID", "my-app-id"},
+ {"GAE_MINOR_VERSION", "067924799508853122"},
+ {"GAE_MODULE_INSTANCE", "0"},
+ {"GAE_MODULE_NAME", "default"},
+ {"GAE_MODULE_VERSION", "20150612t184001"},
+ }
+
+ for _, v := range environ {
+ old := os.Getenv(v.key)
+ os.Setenv(v.key, v.value)
+ v.value = old
+ }
+ return func() { // Restore old environment after the test completes.
+ for _, v := range environ {
+ if v.value == "" {
+ os.Unsetenv(v.key)
+ continue
+ }
+ os.Setenv(v.key, v.value)
+ }
+ }
+}
diff --git a/vendor/google.golang.org/appengine/internal/app_id.go b/vendor/google.golang.org/appengine/internal/app_id.go
new file mode 100644
index 0000000..11df8c0
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/app_id.go
@@ -0,0 +1,28 @@
+// Copyright 2011 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.
+
+package internal
+
+import (
+ "strings"
+)
+
+func parseFullAppID(appid string) (partition, domain, displayID string) {
+ if i := strings.Index(appid, "~"); i != -1 {
+ partition, appid = appid[:i], appid[i+1:]
+ }
+ if i := strings.Index(appid, ":"); i != -1 {
+ domain, appid = appid[:i], appid[i+1:]
+ }
+ return partition, domain, appid
+}
+
+// appID returns "appid" or "domain.com:appid".
+func appID(fullAppID string) string {
+ _, dom, dis := parseFullAppID(fullAppID)
+ if dom != "" {
+ return dom + ":" + dis
+ }
+ return dis
+}
diff --git a/vendor/google.golang.org/appengine/internal/base/api_base.proto b/vendor/google.golang.org/appengine/internal/base/api_base.proto
new file mode 100644
index 0000000..56cd7a3
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/base/api_base.proto
@@ -0,0 +1,33 @@
+// Built-in base types for API calls. Primarily useful as return types.
+
+syntax = "proto2";
+option go_package = "base";
+
+package appengine.base;
+
+message StringProto {
+ required string value = 1;
+}
+
+message Integer32Proto {
+ required int32 value = 1;
+}
+
+message Integer64Proto {
+ required int64 value = 1;
+}
+
+message BoolProto {
+ required bool value = 1;
+}
+
+message DoubleProto {
+ required double value = 1;
+}
+
+message BytesProto {
+ required bytes value = 1 [ctype=CORD];
+}
+
+message VoidProto {
+}
diff --git a/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.proto b/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.proto
new file mode 100755
index 0000000..497b4d9
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/datastore/datastore_v3.proto
@@ -0,0 +1,551 @@
+syntax = "proto2";
+option go_package = "datastore";
+
+package appengine;
+
+message Action{}
+
+message PropertyValue {
+ optional int64 int64Value = 1;
+ optional bool booleanValue = 2;
+ optional string stringValue = 3;
+ optional double doubleValue = 4;
+
+ optional group PointValue = 5 {
+ required double x = 6;
+ required double y = 7;
+ }
+
+ optional group UserValue = 8 {
+ required string email = 9;
+ required string auth_domain = 10;
+ optional string nickname = 11;
+ optional string federated_identity = 21;
+ optional string federated_provider = 22;
+ }
+
+ optional group ReferenceValue = 12 {
+ required string app = 13;
+ optional string name_space = 20;
+ repeated group PathElement = 14 {
+ required string type = 15;
+ optional int64 id = 16;
+ optional string name = 17;
+ }
+ }
+}
+
+message Property {
+ enum Meaning {
+ NO_MEANING = 0;
+ BLOB = 14;
+ TEXT = 15;
+ BYTESTRING = 16;
+
+ ATOM_CATEGORY = 1;
+ ATOM_LINK = 2;
+ ATOM_TITLE = 3;
+ ATOM_CONTENT = 4;
+ ATOM_SUMMARY = 5;
+ ATOM_AUTHOR = 6;
+
+ GD_WHEN = 7;
+ GD_EMAIL = 8;
+ GEORSS_POINT = 9;
+ GD_IM = 10;
+
+ GD_PHONENUMBER = 11;
+ GD_POSTALADDRESS = 12;
+
+ GD_RATING = 13;
+
+ BLOBKEY = 17;
+ ENTITY_PROTO = 19;
+
+ INDEX_VALUE = 18;
+ };
+
+ optional Meaning meaning = 1 [default = NO_MEANING];
+ optional string meaning_uri = 2;
+
+ required string name = 3;
+
+ required PropertyValue value = 5;
+
+ required bool multiple = 4;
+
+ optional bool searchable = 6 [default=false];
+
+ enum FtsTokenizationOption {
+ HTML = 1;
+ ATOM = 2;
+ }
+
+ optional FtsTokenizationOption fts_tokenization_option = 8;
+
+ optional string locale = 9 [default = "en"];
+}
+
+message Path {
+ repeated group Element = 1 {
+ required string type = 2;
+ optional int64 id = 3;
+ optional string name = 4;
+ }
+}
+
+message Reference {
+ required string app = 13;
+ optional string name_space = 20;
+ required Path path = 14;
+}
+
+message User {
+ required string email = 1;
+ required string auth_domain = 2;
+ optional string nickname = 3;
+ optional string federated_identity = 6;
+ optional string federated_provider = 7;
+}
+
+message EntityProto {
+ required Reference key = 13;
+ required Path entity_group = 16;
+ optional User owner = 17;
+
+ enum Kind {
+ GD_CONTACT = 1;
+ GD_EVENT = 2;
+ GD_MESSAGE = 3;
+ }
+ optional Kind kind = 4;
+ optional string kind_uri = 5;
+
+ repeated Property property = 14;
+ repeated Property raw_property = 15;
+
+ optional int32 rank = 18;
+}
+
+message CompositeProperty {
+ required int64 index_id = 1;
+ repeated string value = 2;
+}
+
+message Index {
+ required string entity_type = 1;
+ required bool ancestor = 5;
+ repeated group Property = 2 {
+ required string name = 3;
+ enum Direction {
+ ASCENDING = 1;
+ DESCENDING = 2;
+ }
+ optional Direction direction = 4 [default = ASCENDING];
+ }
+}
+
+message CompositeIndex {
+ required string app_id = 1;
+ required int64 id = 2;
+ required Index definition = 3;
+
+ enum State {
+ WRITE_ONLY = 1;
+ READ_WRITE = 2;
+ DELETED = 3;
+ ERROR = 4;
+ }
+ required State state = 4;
+
+ optional bool only_use_if_required = 6 [default = false];
+}
+
+message IndexPostfix {
+ message IndexValue {
+ required string property_name = 1;
+ required PropertyValue value = 2;
+ }
+
+ repeated IndexValue index_value = 1;
+
+ optional Reference key = 2;
+
+ optional bool before = 3 [default=true];
+}
+
+message IndexPosition {
+ optional string key = 1;
+
+ optional bool before = 2 [default=true];
+}
+
+message Snapshot {
+ enum Status {
+ INACTIVE = 0;
+ ACTIVE = 1;
+ }
+
+ required int64 ts = 1;
+}
+
+message InternalHeader {
+ optional string qos = 1;
+}
+
+message Transaction {
+ optional InternalHeader header = 4;
+ required fixed64 handle = 1;
+ required string app = 2;
+ optional bool mark_changes = 3 [default = false];
+}
+
+message Query {
+ optional InternalHeader header = 39;
+
+ required string app = 1;
+ optional string name_space = 29;
+
+ optional string kind = 3;
+ optional Reference ancestor = 17;
+
+ repeated group Filter = 4 {
+ enum Operator {
+ LESS_THAN = 1;
+ LESS_THAN_OR_EQUAL = 2;
+ GREATER_THAN = 3;
+ GREATER_THAN_OR_EQUAL = 4;
+ EQUAL = 5;
+ IN = 6;
+ EXISTS = 7;
+ }
+
+ required Operator op = 6;
+ repeated Property property = 14;
+ }
+
+ optional string search_query = 8;
+
+ repeated group Order = 9 {
+ enum Direction {
+ ASCENDING = 1;
+ DESCENDING = 2;
+ }
+
+ required string property = 10;
+ optional Direction direction = 11 [default = ASCENDING];
+ }
+
+ enum Hint {
+ ORDER_FIRST = 1;
+ ANCESTOR_FIRST = 2;
+ FILTER_FIRST = 3;
+ }
+ optional Hint hint = 18;
+
+ optional int32 count = 23;
+
+ optional int32 offset = 12 [default = 0];
+
+ optional int32 limit = 16;
+
+ optional CompiledCursor compiled_cursor = 30;
+ optional CompiledCursor end_compiled_cursor = 31;
+
+ repeated CompositeIndex composite_index = 19;
+
+ optional bool require_perfect_plan = 20 [default = false];
+
+ optional bool keys_only = 21 [default = false];
+
+ optional Transaction transaction = 22;
+
+ optional bool compile = 25 [default = false];
+
+ optional int64 failover_ms = 26;
+
+ optional bool strong = 32;
+
+ repeated string property_name = 33;
+
+ repeated string group_by_property_name = 34;
+
+ optional bool distinct = 24;
+
+ optional int64 min_safe_time_seconds = 35;
+
+ repeated string safe_replica_name = 36;
+
+ optional bool persist_offset = 37 [default=false];
+}
+
+message CompiledQuery {
+ required group PrimaryScan = 1 {
+ optional string index_name = 2;
+
+ optional string start_key = 3;
+ optional bool start_inclusive = 4;
+ optional string end_key = 5;
+ optional bool end_inclusive = 6;
+
+ repeated string start_postfix_value = 22;
+ repeated string end_postfix_value = 23;
+
+ optional int64 end_unapplied_log_timestamp_us = 19;
+ }
+
+ repeated group MergeJoinScan = 7 {
+ required string index_name = 8;
+
+ repeated string prefix_value = 9;
+
+ optional bool value_prefix = 20 [default=false];
+ }
+
+ optional Index index_def = 21;
+
+ optional int32 offset = 10 [default = 0];
+
+ optional int32 limit = 11;
+
+ required bool keys_only = 12;
+
+ repeated string property_name = 24;
+
+ optional int32 distinct_infix_size = 25;
+
+ optional group EntityFilter = 13 {
+ optional bool distinct = 14 [default=false];
+
+ optional string kind = 17;
+ optional Reference ancestor = 18;
+ }
+}
+
+message CompiledCursor {
+ optional group Position = 2 {
+ optional string start_key = 27;
+
+ repeated group IndexValue = 29 {
+ optional string property = 30;
+ required PropertyValue value = 31;
+ }
+
+ optional Reference key = 32;
+
+ optional bool start_inclusive = 28 [default=true];
+ }
+}
+
+message Cursor {
+ required fixed64 cursor = 1;
+
+ optional string app = 2;
+}
+
+message Error {
+ enum ErrorCode {
+ BAD_REQUEST = 1;
+ CONCURRENT_TRANSACTION = 2;
+ INTERNAL_ERROR = 3;
+ NEED_INDEX = 4;
+ TIMEOUT = 5;
+ PERMISSION_DENIED = 6;
+ BIGTABLE_ERROR = 7;
+ COMMITTED_BUT_STILL_APPLYING = 8;
+ CAPABILITY_DISABLED = 9;
+ TRY_ALTERNATE_BACKEND = 10;
+ SAFE_TIME_TOO_OLD = 11;
+ }
+}
+
+message Cost {
+ optional int32 index_writes = 1;
+ optional int32 index_write_bytes = 2;
+ optional int32 entity_writes = 3;
+ optional int32 entity_write_bytes = 4;
+ optional group CommitCost = 5 {
+ optional int32 requested_entity_puts = 6;
+ optional int32 requested_entity_deletes = 7;
+ };
+ optional int32 approximate_storage_delta = 8;
+ optional int32 id_sequence_updates = 9;
+}
+
+message GetRequest {
+ optional InternalHeader header = 6;
+
+ repeated Reference key = 1;
+ optional Transaction transaction = 2;
+
+ optional int64 failover_ms = 3;
+
+ optional bool strong = 4;
+
+ optional bool allow_deferred = 5 [default=false];
+}
+
+message GetResponse {
+ repeated group Entity = 1 {
+ optional EntityProto entity = 2;
+ optional Reference key = 4;
+
+ optional int64 version = 3;
+ }
+
+ repeated Reference deferred = 5;
+
+ optional bool in_order = 6 [default=true];
+}
+
+message PutRequest {
+ optional InternalHeader header = 11;
+
+ repeated EntityProto entity = 1;
+ optional Transaction transaction = 2;
+ repeated CompositeIndex composite_index = 3;
+
+ optional bool trusted = 4 [default = false];
+
+ optional bool force = 7 [default = false];
+
+ optional bool mark_changes = 8 [default = false];
+ repeated Snapshot snapshot = 9;
+
+ enum AutoIdPolicy {
+ CURRENT = 0;
+ SEQUENTIAL = 1;
+ }
+ optional AutoIdPolicy auto_id_policy = 10 [default = CURRENT];
+}
+
+message PutResponse {
+ repeated Reference key = 1;
+ optional Cost cost = 2;
+ repeated int64 version = 3;
+}
+
+message TouchRequest {
+ optional InternalHeader header = 10;
+
+ repeated Reference key = 1;
+ repeated CompositeIndex composite_index = 2;
+ optional bool force = 3 [default = false];
+ repeated Snapshot snapshot = 9;
+}
+
+message TouchResponse {
+ optional Cost cost = 1;
+}
+
+message DeleteRequest {
+ optional InternalHeader header = 10;
+
+ repeated Reference key = 6;
+ optional Transaction transaction = 5;
+
+ optional bool trusted = 4 [default = false];
+
+ optional bool force = 7 [default = false];
+
+ optional bool mark_changes = 8 [default = false];
+ repeated Snapshot snapshot = 9;
+}
+
+message DeleteResponse {
+ optional Cost cost = 1;
+ repeated int64 version = 3;
+}
+
+message NextRequest {
+ optional InternalHeader header = 5;
+
+ required Cursor cursor = 1;
+ optional int32 count = 2;
+
+ optional int32 offset = 4 [default = 0];
+
+ optional bool compile = 3 [default = false];
+}
+
+message QueryResult {
+ optional Cursor cursor = 1;
+
+ repeated EntityProto result = 2;
+
+ optional int32 skipped_results = 7;
+
+ required bool more_results = 3;
+
+ optional bool keys_only = 4;
+
+ optional bool index_only = 9;
+
+ optional bool small_ops = 10;
+
+ optional CompiledQuery compiled_query = 5;
+
+ optional CompiledCursor compiled_cursor = 6;
+
+ repeated CompositeIndex index = 8;
+
+ repeated int64 version = 11;
+}
+
+message AllocateIdsRequest {
+ optional InternalHeader header = 4;
+
+ optional Reference model_key = 1;
+
+ optional int64 size = 2;
+
+ optional int64 max = 3;
+
+ repeated Reference reserve = 5;
+}
+
+message AllocateIdsResponse {
+ required int64 start = 1;
+ required int64 end = 2;
+ optional Cost cost = 3;
+}
+
+message CompositeIndices {
+ repeated CompositeIndex index = 1;
+}
+
+message AddActionsRequest {
+ optional InternalHeader header = 3;
+
+ required Transaction transaction = 1;
+ repeated Action action = 2;
+}
+
+message AddActionsResponse {
+}
+
+message BeginTransactionRequest {
+ optional InternalHeader header = 3;
+
+ required string app = 1;
+ optional bool allow_multiple_eg = 2 [default = false];
+ optional string database_id = 4;
+
+ enum TransactionMode {
+ UNKNOWN = 0;
+ READ_ONLY = 1;
+ READ_WRITE = 2;
+ }
+ optional TransactionMode mode = 5 [default = UNKNOWN];
+
+ optional Transaction previous_transaction = 7;
+}
+
+message CommitResponse {
+ optional Cost cost = 1;
+
+ repeated group Version = 3 {
+ required Reference root_entity_key = 4;
+ required int64 version = 5;
+ }
+}
diff --git a/vendor/google.golang.org/appengine/internal/identity.go b/vendor/google.golang.org/appengine/internal/identity.go
new file mode 100644
index 0000000..9b4134e
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity.go
@@ -0,0 +1,55 @@
+// Copyright 2011 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.
+
+package internal
+
+import (
+ "os"
+
+ netcontext "golang.org/x/net/context"
+)
+
+var (
+ // This is set to true in identity_classic.go, which is behind the appengine build tag.
+ // The appengine build tag is set for the first generation runtimes (<= Go 1.9) but not
+ // the second generation runtimes (>= Go 1.11), so this indicates whether we're on a
+ // first-gen runtime. See IsStandard below for the second-gen check.
+ appengineStandard bool
+
+ // This is set to true in identity_flex.go, which is behind the appenginevm build tag.
+ appengineFlex bool
+)
+
+// AppID is the implementation of the wrapper function of the same name in
+// ../identity.go. See that file for commentary.
+func AppID(c netcontext.Context) string {
+ return appID(FullyQualifiedAppID(c))
+}
+
+// IsStandard is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsStandard() bool {
+ // appengineStandard will be true for first-gen runtimes (<= Go 1.9) but not
+ // second-gen (>= Go 1.11).
+ return appengineStandard || IsSecondGen()
+}
+
+// IsStandard is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsSecondGen() bool {
+ // Second-gen runtimes set $GAE_ENV so we use that to check if we're on a second-gen runtime.
+ return os.Getenv("GAE_ENV") == "standard"
+}
+
+// IsFlex is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsFlex() bool {
+ return appengineFlex
+}
+
+// IsAppEngine is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsAppEngine() bool {
+ return IsStandard() || IsFlex()
+}
diff --git a/vendor/google.golang.org/appengine/internal/identity_classic.go b/vendor/google.golang.org/appengine/internal/identity_classic.go
new file mode 100644
index 0000000..4e979f4
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity_classic.go
@@ -0,0 +1,61 @@
+// 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 (
+ "appengine"
+
+ netcontext "golang.org/x/net/context"
+)
+
+func init() {
+ appengineStandard = true
+}
+
+func DefaultVersionHostname(ctx netcontext.Context) string {
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ return appengine.DefaultVersionHostname(c)
+}
+
+func Datacenter(_ netcontext.Context) string { return appengine.Datacenter() }
+func ServerSoftware() string { return appengine.ServerSoftware() }
+func InstanceID() string { return appengine.InstanceID() }
+func IsDevAppServer() bool { return appengine.IsDevAppServer() }
+
+func RequestID(ctx netcontext.Context) string {
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ return appengine.RequestID(c)
+}
+
+func ModuleName(ctx netcontext.Context) string {
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ return appengine.ModuleName(c)
+}
+func VersionID(ctx netcontext.Context) string {
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ return appengine.VersionID(c)
+}
+
+func fullyQualifiedAppID(ctx netcontext.Context) string {
+ c := fromContext(ctx)
+ if c == nil {
+ panic(errNotAppEngineContext)
+ }
+ return c.FullyQualifiedAppID()
+}
diff --git a/vendor/google.golang.org/appengine/internal/identity_flex.go b/vendor/google.golang.org/appengine/internal/identity_flex.go
new file mode 100644
index 0000000..d5e2e7b
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity_flex.go
@@ -0,0 +1,11 @@
+// Copyright 2018 Google LLC. 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 appenginevm
+
+package internal
+
+func init() {
+ appengineFlex = true
+}
diff --git a/vendor/google.golang.org/appengine/internal/identity_vm.go b/vendor/google.golang.org/appengine/internal/identity_vm.go
new file mode 100644
index 0000000..5d80672
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/identity_vm.go
@@ -0,0 +1,134 @@
+// Copyright 2011 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 (
+ "log"
+ "net/http"
+ "os"
+ "strings"
+
+ netcontext "golang.org/x/net/context"
+)
+
+// These functions are implementations of the wrapper functions
+// in ../appengine/identity.go. See that file for commentary.
+
+const (
+ hDefaultVersionHostname = "X-AppEngine-Default-Version-Hostname"
+ hRequestLogId = "X-AppEngine-Request-Log-Id"
+ hDatacenter = "X-AppEngine-Datacenter"
+)
+
+func ctxHeaders(ctx netcontext.Context) http.Header {
+ c := fromContext(ctx)
+ if c == nil {
+ return nil
+ }
+ return c.Request().Header
+}
+
+func DefaultVersionHostname(ctx netcontext.Context) string {
+ return ctxHeaders(ctx).Get(hDefaultVersionHostname)
+}
+
+func RequestID(ctx netcontext.Context) string {
+ return ctxHeaders(ctx).Get(hRequestLogId)
+}
+
+func Datacenter(ctx netcontext.Context) string {
+ if dc := ctxHeaders(ctx).Get(hDatacenter); dc != "" {
+ return dc
+ }
+ // If the header isn't set, read zone from the metadata service.
+ // It has the format projects/[NUMERIC_PROJECT_ID]/zones/[ZONE]
+ zone, err := getMetadata("instance/zone")
+ if err != nil {
+ log.Printf("Datacenter: %v", err)
+ return ""
+ }
+ parts := strings.Split(string(zone), "/")
+ if len(parts) == 0 {
+ return ""
+ }
+ return parts[len(parts)-1]
+}
+
+func ServerSoftware() string {
+ // TODO(dsymonds): Remove fallback when we've verified this.
+ if s := os.Getenv("SERVER_SOFTWARE"); s != "" {
+ return s
+ }
+ if s := os.Getenv("GAE_ENV"); s != "" {
+ return s
+ }
+ return "Google App Engine/1.x.x"
+}
+
+// TODO(dsymonds): Remove the metadata fetches.
+
+func ModuleName(_ netcontext.Context) string {
+ if s := os.Getenv("GAE_MODULE_NAME"); s != "" {
+ return s
+ }
+ if s := os.Getenv("GAE_SERVICE"); s != "" {
+ return s
+ }
+ return string(mustGetMetadata("instance/attributes/gae_backend_name"))
+}
+
+func VersionID(_ netcontext.Context) string {
+ if s1, s2 := os.Getenv("GAE_MODULE_VERSION"), os.Getenv("GAE_MINOR_VERSION"); s1 != "" && s2 != "" {
+ return s1 + "." + s2
+ }
+ if s1, s2 := os.Getenv("GAE_VERSION"), os.Getenv("GAE_DEPLOYMENT_ID"); s1 != "" && s2 != "" {
+ return s1 + "." + s2
+ }
+ return string(mustGetMetadata("instance/attributes/gae_backend_version")) + "." + string(mustGetMetadata("instance/attributes/gae_backend_minor_version"))
+}
+
+func InstanceID() string {
+ if s := os.Getenv("GAE_MODULE_INSTANCE"); s != "" {
+ return s
+ }
+ if s := os.Getenv("GAE_INSTANCE"); s != "" {
+ return s
+ }
+ return string(mustGetMetadata("instance/attributes/gae_backend_instance"))
+}
+
+func partitionlessAppID() string {
+ // gae_project has everything except the partition prefix.
+ if appID := os.Getenv("GAE_LONG_APP_ID"); appID != "" {
+ return appID
+ }
+ if project := os.Getenv("GOOGLE_CLOUD_PROJECT"); project != "" {
+ return project
+ }
+ return string(mustGetMetadata("instance/attributes/gae_project"))
+}
+
+func fullyQualifiedAppID(_ netcontext.Context) string {
+ if s := os.Getenv("GAE_APPLICATION"); s != "" {
+ return s
+ }
+ appID := partitionlessAppID()
+
+ part := os.Getenv("GAE_PARTITION")
+ if part == "" {
+ part = string(mustGetMetadata("instance/attributes/gae_partition"))
+ }
+
+ if part != "" {
+ appID = part + "~" + appID
+ }
+ return appID
+}
+
+func IsDevAppServer() bool {
+ return os.Getenv("RUN_WITH_DEVAPPSERVER") != ""
+}
diff --git a/vendor/google.golang.org/appengine/internal/internal.go b/vendor/google.golang.org/appengine/internal/internal.go
new file mode 100644
index 0000000..051ea39
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/internal.go
@@ -0,0 +1,110 @@
+// Copyright 2011 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.
+
+// Package internal provides support for package appengine.
+//
+// Programs should not use this package directly. Its API is not stable.
+// Use packages appengine and appengine/* instead.
+package internal
+
+import (
+ "fmt"
+
+ "github.com/golang/protobuf/proto"
+
+ remotepb "google.golang.org/appengine/internal/remote_api"
+)
+
+// errorCodeMaps is a map of service name to the error code map for the service.
+var errorCodeMaps = make(map[string]map[int32]string)
+
+// RegisterErrorCodeMap is called from API implementations to register their
+// error code map. This should only be called from init functions.
+func RegisterErrorCodeMap(service string, m map[int32]string) {
+ errorCodeMaps[service] = m
+}
+
+type timeoutCodeKey struct {
+ service string
+ code int32
+}
+
+// timeoutCodes is the set of service+code pairs that represent timeouts.
+var timeoutCodes = make(map[timeoutCodeKey]bool)
+
+func RegisterTimeoutErrorCode(service string, code int32) {
+ timeoutCodes[timeoutCodeKey{service, code}] = true
+}
+
+// APIError is the type returned by appengine.Context's Call method
+// when an API call fails in an API-specific way. This may be, for instance,
+// a taskqueue API call failing with TaskQueueServiceError::UNKNOWN_QUEUE.
+type APIError struct {
+ Service string
+ Detail string
+ Code int32 // API-specific error code
+}
+
+func (e *APIError) Error() string {
+ if e.Code == 0 {
+ if e.Detail == "" {
+ return "APIError <empty>"
+ }
+ return e.Detail
+ }
+ s := fmt.Sprintf("API error %d", e.Code)
+ if m, ok := errorCodeMaps[e.Service]; ok {
+ s += " (" + e.Service + ": " + m[e.Code] + ")"
+ } else {
+ // Shouldn't happen, but provide a bit more detail if it does.
+ s = e.Service + " " + s
+ }
+ if e.Detail != "" {
+ s += ": " + e.Detail
+ }
+ return s
+}
+
+func (e *APIError) IsTimeout() bool {
+ return timeoutCodes[timeoutCodeKey{e.Service, e.Code}]
+}
+
+// CallError is the type returned by appengine.Context's Call method when an
+// API call fails in a generic way, such as RpcError::CAPABILITY_DISABLED.
+type CallError struct {
+ Detail string
+ Code int32
+ // TODO: Remove this if we get a distinguishable error code.
+ Timeout bool
+}
+
+func (e *CallError) Error() string {
+ var msg string
+ switch remotepb.RpcError_ErrorCode(e.Code) {
+ case remotepb.RpcError_UNKNOWN:
+ return e.Detail
+ case remotepb.RpcError_OVER_QUOTA:
+ msg = "Over quota"
+ case remotepb.RpcError_CAPABILITY_DISABLED:
+ msg = "Capability disabled"
+ case remotepb.RpcError_CANCELLED:
+ msg = "Canceled"
+ default:
+ msg = fmt.Sprintf("Call error %d", e.Code)
+ }
+ s := msg + ": " + e.Detail
+ if e.Timeout {
+ s += " (timeout)"
+ }
+ return s
+}
+
+func (e *CallError) IsTimeout() bool {
+ return e.Timeout
+}
+
+// NamespaceMods is a map from API service to a function that will mutate an RPC request to attach a namespace.
+// The function should be prepared to be called on the same message more than once; it should only modify the
+// RPC request the first time.
+var NamespaceMods = make(map[string]func(m proto.Message, namespace string))
diff --git a/vendor/google.golang.org/appengine/internal/log/log_service.proto b/vendor/google.golang.org/appengine/internal/log/log_service.proto
new file mode 100644
index 0000000..8981dc4
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/log/log_service.proto
@@ -0,0 +1,150 @@
+syntax = "proto2";
+option go_package = "log";
+
+package appengine;
+
+message LogServiceError {
+ enum ErrorCode {
+ OK = 0;
+ INVALID_REQUEST = 1;
+ STORAGE_ERROR = 2;
+ }
+}
+
+message UserAppLogLine {
+ required int64 timestamp_usec = 1;
+ required int64 level = 2;
+ required string message = 3;
+}
+
+message UserAppLogGroup {
+ repeated UserAppLogLine log_line = 2;
+}
+
+message FlushRequest {
+ optional bytes logs = 1;
+}
+
+message SetStatusRequest {
+ required string status = 1;
+}
+
+
+message LogOffset {
+ optional bytes request_id = 1;
+}
+
+message LogLine {
+ required int64 time = 1;
+ required int32 level = 2;
+ required string log_message = 3;
+}
+
+message RequestLog {
+ required string app_id = 1;
+ optional string module_id = 37 [default="default"];
+ required string version_id = 2;
+ required bytes request_id = 3;
+ optional LogOffset offset = 35;
+ required string ip = 4;
+ optional string nickname = 5;
+ required int64 start_time = 6;
+ required int64 end_time = 7;
+ required int64 latency = 8;
+ required int64 mcycles = 9;
+ required string method = 10;
+ required string resource = 11;
+ required string http_version = 12;
+ required int32 status = 13;
+ required int64 response_size = 14;
+ optional string referrer = 15;
+ optional string user_agent = 16;
+ required string url_map_entry = 17;
+ required string combined = 18;
+ optional int64 api_mcycles = 19;
+ optional string host = 20;
+ optional double cost = 21;
+
+ optional string task_queue_name = 22;
+ optional string task_name = 23;
+
+ optional bool was_loading_request = 24;
+ optional int64 pending_time = 25;
+ optional int32 replica_index = 26 [default = -1];
+ optional bool finished = 27 [default = true];
+ optional bytes clone_key = 28;
+
+ repeated LogLine line = 29;
+
+ optional bool lines_incomplete = 36;
+ optional bytes app_engine_release = 38;
+
+ optional int32 exit_reason = 30;
+ optional bool was_throttled_for_time = 31;
+ optional bool was_throttled_for_requests = 32;
+ optional int64 throttled_time = 33;
+
+ optional bytes server_name = 34;
+}
+
+message LogModuleVersion {
+ optional string module_id = 1 [default="default"];
+ optional string version_id = 2;
+}
+
+message LogReadRequest {
+ required string app_id = 1;
+ repeated string version_id = 2;
+ repeated LogModuleVersion module_version = 19;
+
+ optional int64 start_time = 3;
+ optional int64 end_time = 4;
+ optional LogOffset offset = 5;
+ repeated bytes request_id = 6;
+
+ optional int32 minimum_log_level = 7;
+ optional bool include_incomplete = 8;
+ optional int64 count = 9;
+
+ optional string combined_log_regex = 14;
+ optional string host_regex = 15;
+ optional int32 replica_index = 16;
+
+ optional bool include_app_logs = 10;
+ optional int32 app_logs_per_request = 17;
+ optional bool include_host = 11;
+ optional bool include_all = 12;
+ optional bool cache_iterator = 13;
+ optional int32 num_shards = 18;
+}
+
+message LogReadResponse {
+ repeated RequestLog log = 1;
+ optional LogOffset offset = 2;
+ optional int64 last_end_time = 3;
+}
+
+message LogUsageRecord {
+ optional string version_id = 1;
+ optional int32 start_time = 2;
+ optional int32 end_time = 3;
+ optional int64 count = 4;
+ optional int64 total_size = 5;
+ optional int32 records = 6;
+}
+
+message LogUsageRequest {
+ required string app_id = 1;
+ repeated string version_id = 2;
+ optional int32 start_time = 3;
+ optional int32 end_time = 4;
+ optional uint32 resolution_hours = 5 [default = 1];
+ optional bool combine_versions = 6;
+ optional int32 usage_version = 7;
+ optional bool versions_only = 8;
+}
+
+message LogUsageResponse {
+ repeated LogUsageRecord usage = 1;
+ optional LogUsageRecord summary = 2;
+}
diff --git a/vendor/google.golang.org/appengine/internal/main.go b/vendor/google.golang.org/appengine/internal/main.go
new file mode 100644
index 0000000..1e76531
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/main.go
@@ -0,0 +1,16 @@
+// Copyright 2011 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 (
+ "appengine_internal"
+)
+
+func Main() {
+ MainPath = ""
+ appengine_internal.Main()
+}
diff --git a/vendor/google.golang.org/appengine/internal/main_common.go b/vendor/google.golang.org/appengine/internal/main_common.go
new file mode 100644
index 0000000..357dce4
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/main_common.go
@@ -0,0 +1,7 @@
+package internal
+
+// MainPath stores the file path of the main package. On App Engine Standard
+// using Go version 1.9 and below, this will be unset. On App Engine Flex and
+// App Engine Standard second-gen (Go 1.11 and above), this will be the
+// filepath to package main.
+var MainPath string
diff --git a/vendor/google.golang.org/appengine/internal/main_vm.go b/vendor/google.golang.org/appengine/internal/main_vm.go
new file mode 100644
index 0000000..ddb79a3
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/main_vm.go
@@ -0,0 +1,69 @@
+// Copyright 2011 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 (
+ "io"
+ "log"
+ "net/http"
+ "net/url"
+ "os"
+ "path/filepath"
+ "runtime"
+)
+
+func Main() {
+ MainPath = filepath.Dir(findMainPath())
+ installHealthChecker(http.DefaultServeMux)
+
+ port := "8080"
+ if s := os.Getenv("PORT"); s != "" {
+ port = s
+ }
+
+ host := ""
+ if IsDevAppServer() {
+ host = "127.0.0.1"
+ }
+ if err := http.ListenAndServe(host+":"+port, http.HandlerFunc(handleHTTP)); err != nil {
+ log.Fatalf("http.ListenAndServe: %v", err)
+ }
+}
+
+// Find the path to package main by looking at the root Caller.
+func findMainPath() string {
+ pc := make([]uintptr, 100)
+ n := runtime.Callers(2, pc)
+ frames := runtime.CallersFrames(pc[:n])
+ for {
+ frame, more := frames.Next()
+ // Tests won't have package main, instead they have testing.tRunner
+ if frame.Function == "main.main" || frame.Function == "testing.tRunner" {
+ return frame.File
+ }
+ if !more {
+ break
+ }
+ }
+ return ""
+}
+
+func installHealthChecker(mux *http.ServeMux) {
+ // If no health check handler has been installed by this point, add a trivial one.
+ const healthPath = "/_ah/health"
+ hreq := &http.Request{
+ Method: "GET",
+ URL: &url.URL{
+ Path: healthPath,
+ },
+ }
+ if _, pat := mux.Handler(hreq); pat != healthPath {
+ mux.HandleFunc(healthPath, func(w http.ResponseWriter, r *http.Request) {
+ io.WriteString(w, "ok")
+ })
+ }
+}
diff --git a/vendor/google.golang.org/appengine/internal/metadata.go b/vendor/google.golang.org/appengine/internal/metadata.go
new file mode 100644
index 0000000..c4ba63b
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/metadata.go
@@ -0,0 +1,60 @@
+// Copyright 2014 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.
+
+package internal
+
+// This file has code for accessing metadata.
+//
+// References:
+// https://cloud.google.com/compute/docs/metadata
+
+import (
+ "fmt"
+ "io/ioutil"
+ "net/http"
+ "net/url"
+)
+
+const (
+ metadataHost = "metadata"
+ metadataPath = "/computeMetadata/v1/"
+)
+
+var (
+ metadataRequestHeaders = http.Header{
+ "Metadata-Flavor": []string{"Google"},
+ }
+)
+
+// TODO(dsymonds): Do we need to support default values, like Python?
+func mustGetMetadata(key string) []byte {
+ b, err := getMetadata(key)
+ if err != nil {
+ panic(fmt.Sprintf("Metadata fetch failed for '%s': %v", key, err))
+ }
+ return b
+}
+
+func getMetadata(key string) ([]byte, error) {
+ // TODO(dsymonds): May need to use url.Parse to support keys with query args.
+ req := &http.Request{
+ Method: "GET",
+ URL: &url.URL{
+ Scheme: "http",
+ Host: metadataHost,
+ Path: metadataPath + key,
+ },
+ Header: metadataRequestHeaders,
+ Host: metadataHost,
+ }
+ resp, err := http.DefaultClient.Do(req)
+ if err != nil {
+ return nil, err
+ }
+ defer resp.Body.Close()
+ if resp.StatusCode != 200 {
+ return nil, fmt.Errorf("metadata server returned HTTP %d", resp.StatusCode)
+ }
+ return ioutil.ReadAll(resp.Body)
+}
diff --git a/vendor/google.golang.org/appengine/internal/net.go b/vendor/google.golang.org/appengine/internal/net.go
new file mode 100644
index 0000000..3b94cf0
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/net.go
@@ -0,0 +1,56 @@
+// Copyright 2014 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.
+
+package internal
+
+// This file implements a network dialer that limits the number of concurrent connections.
+// It is only used for API calls.
+
+import (
+ "log"
+ "net"
+ "runtime"
+ "sync"
+ "time"
+)
+
+var limitSem = make(chan int, 100) // TODO(dsymonds): Use environment variable.
+
+func limitRelease() {
+ // non-blocking
+ select {
+ case <-limitSem:
+ default:
+ // This should not normally happen.
+ log.Print("appengine: unbalanced limitSem release!")
+ }
+}
+
+func limitDial(network, addr string) (net.Conn, error) {
+ limitSem <- 1
+
+ // Dial with a timeout in case the API host is MIA.
+ // The connection should normally be very fast.
+ conn, err := net.DialTimeout(network, addr, 500*time.Millisecond)
+ if err != nil {
+ limitRelease()
+ return nil, err
+ }
+ lc := &limitConn{Conn: conn}
+ runtime.SetFinalizer(lc, (*limitConn).Close) // shouldn't usually be required
+ return lc, nil
+}
+
+type limitConn struct {
+ close sync.Once
+ net.Conn
+}
+
+func (lc *limitConn) Close() error {
+ defer lc.close.Do(func() {
+ limitRelease()
+ runtime.SetFinalizer(lc, nil)
+ })
+ return lc.Conn.Close()
+}
diff --git a/vendor/google.golang.org/appengine/internal/regen.sh b/vendor/google.golang.org/appengine/internal/regen.sh
new file mode 100755
index 0000000..2fdb546
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/regen.sh
@@ -0,0 +1,40 @@
+#!/bin/bash -e
+#
+# This script rebuilds the generated code for the protocol buffers.
+# To run this you will need protoc and goprotobuf installed;
+# see https://github.com/golang/protobuf for instructions.
+
+PKG=google.golang.org/appengine
+
+function die() {
+ echo 1>&2 $*
+ exit 1
+}
+
+# Sanity check that the right tools are accessible.
+for tool in go protoc protoc-gen-go; do
+ q=$(which $tool) || die "didn't find $tool"
+ echo 1>&2 "$tool: $q"
+done
+
+echo -n 1>&2 "finding package dir... "
+pkgdir=$(go list -f '{{.Dir}}' $PKG)
+echo 1>&2 $pkgdir
+base=$(echo $pkgdir | sed "s,/$PKG\$,,")
+echo 1>&2 "base: $base"
+cd $base
+
+# Run protoc once per package.
+for dir in $(find $PKG/internal -name '*.proto' | xargs dirname | sort | uniq); do
+ echo 1>&2 "* $dir"
+ protoc --go_out=. $dir/*.proto
+done
+
+for f in $(find $PKG/internal -name '*.pb.go'); do
+ # Remove proto.RegisterEnum calls.
+ # These cause duplicate registration panics when these packages
+ # are used on classic App Engine. proto.RegisterEnum only affects
+ # parsing the text format; we don't care about that.
+ # https://code.google.com/p/googleappengine/issues/detail?id=11670#c17
+ sed -i '/proto.RegisterEnum/d' $f
+done
diff --git a/vendor/google.golang.org/appengine/internal/remote_api/remote_api.proto b/vendor/google.golang.org/appengine/internal/remote_api/remote_api.proto
new file mode 100644
index 0000000..f21763a
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/remote_api/remote_api.proto
@@ -0,0 +1,44 @@
+syntax = "proto2";
+option go_package = "remote_api";
+
+package remote_api;
+
+message Request {
+ required string service_name = 2;
+ required string method = 3;
+ required bytes request = 4;
+ optional string request_id = 5;
+}
+
+message ApplicationError {
+ required int32 code = 1;
+ required string detail = 2;
+}
+
+message RpcError {
+ enum ErrorCode {
+ UNKNOWN = 0;
+ CALL_NOT_FOUND = 1;
+ PARSE_ERROR = 2;
+ SECURITY_VIOLATION = 3;
+ OVER_QUOTA = 4;
+ REQUEST_TOO_LARGE = 5;
+ CAPABILITY_DISABLED = 6;
+ FEATURE_DISABLED = 7;
+ BAD_REQUEST = 8;
+ RESPONSE_TOO_LARGE = 9;
+ CANCELLED = 10;
+ REPLAY_ERROR = 11;
+ DEADLINE_EXCEEDED = 12;
+ }
+ required int32 code = 1;
+ optional string detail = 2;
+}
+
+message Response {
+ optional bytes response = 1;
+ optional bytes exception = 2;
+ optional ApplicationError application_error = 3;
+ optional bytes java_exception = 4;
+ optional RpcError rpc_error = 5;
+}
diff --git a/vendor/google.golang.org/appengine/internal/transaction.go b/vendor/google.golang.org/appengine/internal/transaction.go
new file mode 100644
index 0000000..9006ae6
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/transaction.go
@@ -0,0 +1,115 @@
+// Copyright 2014 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.
+
+package internal
+
+// This file implements hooks for applying datastore transactions.
+
+import (
+ "errors"
+ "reflect"
+
+ "github.com/golang/protobuf/proto"
+ netcontext "golang.org/x/net/context"
+
+ basepb "google.golang.org/appengine/internal/base"
+ pb "google.golang.org/appengine/internal/datastore"
+)
+
+var transactionSetters = make(map[reflect.Type]reflect.Value)
+
+// RegisterTransactionSetter registers a function that sets transaction information
+// in a protocol buffer message. f should be a function with two arguments,
+// the first being a protocol buffer type, and the second being *datastore.Transaction.
+func RegisterTransactionSetter(f interface{}) {
+ v := reflect.ValueOf(f)
+ transactionSetters[v.Type().In(0)] = v
+}
+
+// applyTransaction applies the transaction t to message pb
+// by using the relevant setter passed to RegisterTransactionSetter.
+func applyTransaction(pb proto.Message, t *pb.Transaction) {
+ v := reflect.ValueOf(pb)
+ if f, ok := transactionSetters[v.Type()]; ok {
+ f.Call([]reflect.Value{v, reflect.ValueOf(t)})
+ }
+}
+
+var transactionKey = "used for *Transaction"
+
+func transactionFromContext(ctx netcontext.Context) *transaction {
+ t, _ := ctx.Value(&transactionKey).(*transaction)
+ return t
+}
+
+func withTransaction(ctx netcontext.Context, t *transaction) netcontext.Context {
+ return netcontext.WithValue(ctx, &transactionKey, t)
+}
+
+type transaction struct {
+ transaction pb.Transaction
+ finished bool
+}
+
+var ErrConcurrentTransaction = errors.New("internal: concurrent transaction")
+
+func RunTransactionOnce(c netcontext.Context, f func(netcontext.Context) error, xg bool, readOnly bool, previousTransaction *pb.Transaction) (*pb.Transaction, error) {
+ if transactionFromContext(c) != nil {
+ return nil, errors.New("nested transactions are not supported")
+ }
+
+ // Begin the transaction.
+ t := &transaction{}
+ req := &pb.BeginTransactionRequest{
+ App: proto.String(FullyQualifiedAppID(c)),
+ }
+ if xg {
+ req.AllowMultipleEg = proto.Bool(true)
+ }
+ if previousTransaction != nil {
+ req.PreviousTransaction = previousTransaction
+ }
+ if readOnly {
+ req.Mode = pb.BeginTransactionRequest_READ_ONLY.Enum()
+ } else {
+ req.Mode = pb.BeginTransactionRequest_READ_WRITE.Enum()
+ }
+ if err := Call(c, "datastore_v3", "BeginTransaction", req, &t.transaction); err != nil {
+ return nil, err
+ }
+
+ // Call f, rolling back the transaction if f returns a non-nil error, or panics.
+ // The panic is not recovered.
+ defer func() {
+ if t.finished {
+ return
+ }
+ t.finished = true
+ // Ignore the error return value, since we are already returning a non-nil
+ // error (or we're panicking).
+ Call(c, "datastore_v3", "Rollback", &t.transaction, &basepb.VoidProto{})
+ }()
+ if err := f(withTransaction(c, t)); err != nil {
+ return &t.transaction, err
+ }
+ t.finished = true
+
+ // Commit the transaction.
+ res := &pb.CommitResponse{}
+ err := Call(c, "datastore_v3", "Commit", &t.transaction, res)
+ if ae, ok := err.(*APIError); ok {
+ /* TODO: restore this conditional
+ if appengine.IsDevAppServer() {
+ */
+ // The Python Dev AppServer raises an ApplicationError with error code 2 (which is
+ // Error.CONCURRENT_TRANSACTION) and message "Concurrency exception.".
+ if ae.Code == int32(pb.Error_BAD_REQUEST) && ae.Detail == "ApplicationError: 2 Concurrency exception." {
+ return &t.transaction, ErrConcurrentTransaction
+ }
+ if ae.Code == int32(pb.Error_CONCURRENT_TRANSACTION) {
+ return &t.transaction, ErrConcurrentTransaction
+ }
+ }
+ return &t.transaction, err
+}
diff --git a/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.proto b/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.proto
new file mode 100644
index 0000000..f695edf
--- /dev/null
+++ b/vendor/google.golang.org/appengine/internal/urlfetch/urlfetch_service.proto
@@ -0,0 +1,64 @@
+syntax = "proto2";
+option go_package = "urlfetch";
+
+package appengine;
+
+message URLFetchServiceError {
+ enum ErrorCode {
+ OK = 0;
+ INVALID_URL = 1;
+ FETCH_ERROR = 2;
+ UNSPECIFIED_ERROR = 3;
+ RESPONSE_TOO_LARGE = 4;
+ DEADLINE_EXCEEDED = 5;
+ SSL_CERTIFICATE_ERROR = 6;
+ DNS_ERROR = 7;
+ CLOSED = 8;
+ INTERNAL_TRANSIENT_ERROR = 9;
+ TOO_MANY_REDIRECTS = 10;
+ MALFORMED_REPLY = 11;
+ CONNECTION_ERROR = 12;
+ }
+}
+
+message URLFetchRequest {
+ enum RequestMethod {
+ GET = 1;
+ POST = 2;
+ HEAD = 3;
+ PUT = 4;
+ DELETE = 5;
+ PATCH = 6;
+ }
+ required RequestMethod Method = 1;
+ required string Url = 2;
+ repeated group Header = 3 {
+ required string Key = 4;
+ required string Value = 5;
+ }
+ optional bytes Payload = 6 [ctype=CORD];
+
+ optional bool FollowRedirects = 7 [default=true];
+
+ optional double Deadline = 8;
+
+ optional bool MustValidateServerCertificate = 9 [default=true];
+}
+
+message URLFetchResponse {
+ optional bytes Content = 1;
+ required int32 StatusCode = 2;
+ repeated group Header = 3 {
+ required string Key = 4;
+ required string Value = 5;
+ }
+ optional bool ContentWasTruncated = 6 [default=false];
+ optional int64 ExternalBytesSent = 7;
+ optional int64 ExternalBytesReceived = 8;
+
+ optional string FinalUrl = 9;
+
+ optional int64 ApiCpuMilliseconds = 10 [default=0];
+ optional int64 ApiBytesSent = 11 [default=0];
+ optional int64 ApiBytesReceived = 12 [default=0];
+}
diff --git a/vendor/google.golang.org/appengine/urlfetch/urlfetch.go b/vendor/google.golang.org/appengine/urlfetch/urlfetch.go
new file mode 100644
index 0000000..6ffe1e6
--- /dev/null
+++ b/vendor/google.golang.org/appengine/urlfetch/urlfetch.go
@@ -0,0 +1,210 @@
+// Copyright 2011 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.
+
+// Package urlfetch provides an http.RoundTripper implementation
+// for fetching URLs via App Engine's urlfetch service.
+package urlfetch // import "google.golang.org/appengine/urlfetch"
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "net/http"
+ "net/url"
+ "strconv"
+ "strings"
+ "time"
+
+ "github.com/golang/protobuf/proto"
+ "golang.org/x/net/context"
+
+ "google.golang.org/appengine/internal"
+ pb "google.golang.org/appengine/internal/urlfetch"
+)
+
+// Transport is an implementation of http.RoundTripper for
+// App Engine. Users should generally create an http.Client using
+// this transport and use the Client rather than using this transport
+// directly.
+type Transport struct {
+ Context context.Context
+
+ // Controls whether the application checks the validity of SSL certificates
+ // over HTTPS connections. A value of false (the default) instructs the
+ // application to send a request to the server only if the certificate is
+ // valid and signed by a trusted certificate authority (CA), and also
+ // includes a hostname that matches the certificate. A value of true
+ // instructs the application to perform no certificate validation.
+ AllowInvalidServerCertificate bool
+}
+
+// Verify statically that *Transport implements http.RoundTripper.
+var _ http.RoundTripper = (*Transport)(nil)
+
+// Client returns an *http.Client using a default urlfetch Transport. This
+// client will have the default deadline of 5 seconds, and will check the
+// validity of SSL certificates.
+//
+// Any deadline of the provided context will be used for requests through this client;
+// if the client does not have a deadline then a 5 second default is used.
+func Client(ctx context.Context) *http.Client {
+ return &http.Client{
+ Transport: &Transport{
+ Context: ctx,
+ },
+ }
+}
+
+type bodyReader struct {
+ content []byte
+ truncated bool
+ closed bool
+}
+
+// ErrTruncatedBody is the error returned after the final Read() from a
+// response's Body if the body has been truncated by App Engine's proxy.
+var ErrTruncatedBody = errors.New("urlfetch: truncated body")
+
+func statusCodeToText(code int) string {
+ if t := http.StatusText(code); t != "" {
+ return t
+ }
+ return strconv.Itoa(code)
+}
+
+func (br *bodyReader) Read(p []byte) (n int, err error) {
+ if br.closed {
+ if br.truncated {
+ return 0, ErrTruncatedBody
+ }
+ return 0, io.EOF
+ }
+ n = copy(p, br.content)
+ if n > 0 {
+ br.content = br.content[n:]
+ return
+ }
+ if br.truncated {
+ br.closed = true
+ return 0, ErrTruncatedBody
+ }
+ return 0, io.EOF
+}
+
+func (br *bodyReader) Close() error {
+ br.closed = true
+ br.content = nil
+ return nil
+}
+
+// A map of the URL Fetch-accepted methods that take a request body.
+var methodAcceptsRequestBody = map[string]bool{
+ "POST": true,
+ "PUT": true,
+ "PATCH": true,
+}
+
+// urlString returns a valid string given a URL. This function is necessary because
+// the String method of URL doesn't correctly handle URLs with non-empty Opaque values.
+// See http://code.google.com/p/go/issues/detail?id=4860.
+func urlString(u *url.URL) string {
+ if u.Opaque == "" || strings.HasPrefix(u.Opaque, "//") {
+ return u.String()
+ }
+ aux := *u
+ aux.Opaque = "//" + aux.Host + aux.Opaque
+ return aux.String()
+}
+
+// RoundTrip issues a single HTTP request and returns its response. Per the
+// http.RoundTripper interface, RoundTrip only returns an error if there
+// was an unsupported request or the URL Fetch proxy fails.
+// Note that HTTP response codes such as 5xx, 403, 404, etc are not
+// errors as far as the transport is concerned and will be returned
+// with err set to nil.
+func (t *Transport) RoundTrip(req *http.Request) (res *http.Response, err error) {
+ methNum, ok := pb.URLFetchRequest_RequestMethod_value[req.Method]
+ if !ok {
+ return nil, fmt.Errorf("urlfetch: unsupported HTTP method %q", req.Method)
+ }
+
+ method := pb.URLFetchRequest_RequestMethod(methNum)
+
+ freq := &pb.URLFetchRequest{
+ Method: &method,
+ Url: proto.String(urlString(req.URL)),
+ FollowRedirects: proto.Bool(false), // http.Client's responsibility
+ MustValidateServerCertificate: proto.Bool(!t.AllowInvalidServerCertificate),
+ }
+ if deadline, ok := t.Context.Deadline(); ok {
+ freq.Deadline = proto.Float64(deadline.Sub(time.Now()).Seconds())
+ }
+
+ for k, vals := range req.Header {
+ for _, val := range vals {
+ freq.Header = append(freq.Header, &pb.URLFetchRequest_Header{
+ Key: proto.String(k),
+ Value: proto.String(val),
+ })
+ }
+ }
+ if methodAcceptsRequestBody[req.Method] && req.Body != nil {
+ // Avoid a []byte copy if req.Body has a Bytes method.
+ switch b := req.Body.(type) {
+ case interface {
+ Bytes() []byte
+ }:
+ freq.Payload = b.Bytes()
+ default:
+ freq.Payload, err = ioutil.ReadAll(req.Body)
+ if err != nil {
+ return nil, err
+ }
+ }
+ }
+
+ fres := &pb.URLFetchResponse{}
+ if err := internal.Call(t.Context, "urlfetch", "Fetch", freq, fres); err != nil {
+ return nil, err
+ }
+
+ res = &http.Response{}
+ res.StatusCode = int(*fres.StatusCode)
+ res.Status = fmt.Sprintf("%d %s", res.StatusCode, statusCodeToText(res.StatusCode))
+ res.Header = make(http.Header)
+ res.Request = req
+
+ // Faked:
+ res.ProtoMajor = 1
+ res.ProtoMinor = 1
+ res.Proto = "HTTP/1.1"
+ res.Close = true
+
+ for _, h := range fres.Header {
+ hkey := http.CanonicalHeaderKey(*h.Key)
+ hval := *h.Value
+ if hkey == "Content-Length" {
+ // Will get filled in below for all but HEAD requests.
+ if req.Method == "HEAD" {
+ res.ContentLength, _ = strconv.ParseInt(hval, 10, 64)
+ }
+ continue
+ }
+ res.Header.Add(hkey, hval)
+ }
+
+ if req.Method != "HEAD" {
+ res.ContentLength = int64(len(fres.Content))
+ }
+
+ truncated := fres.GetContentWasTruncated()
+ res.Body = &bodyReader{content: fres.Content, truncated: truncated}
+ return
+}
+
+func init() {
+ internal.RegisterErrorCodeMap("urlfetch", pb.URLFetchServiceError_ErrorCode_name)
+ internal.RegisterTimeoutErrorCode("urlfetch", int32(pb.URLFetchServiceError_DEADLINE_EXCEEDED))
+}