Update ttrpc to support context timeout.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

vendor.conf

@@ -36,7 +36,7 @@ github.com/Microsoft/go-winio v0.4.11
 github.com/Microsoft/hcsshim v0.8.3
 google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
 golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
-github.com/containerd/ttrpc 2a805f71863501300ae1976d29f0454ae003e85a
+github.com/containerd/ttrpc f02858b1457c5ca3aaec3a0803eb0d59f96e41d6
 github.com/syndtr/gocapability db04d3cc01c8b54962a58ec7e491717d06cfcc16
 gotest.tools v2.1.0
 github.com/google/go-cmp v0.1.0

vendor/github.com/containerd/ttrpc/README.md

@@ -50,3 +50,13 @@ TODO:
 - [ ] Document protocol layout
 - [ ] Add testing under concurrent load to ensure
 - [ ] Verify connection error handling
+
+# Project details
+
+ttrpc is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
+As a containerd sub-project, you will find the:
+ * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
+ * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
+ * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
+
+information in our [`containerd/project`](https://github.com/containerd/project) repository.

vendor/github.com/containerd/ttrpc/client.go

@@ -24,6 +24,7 @@ import (
 	"strings"
 	"sync"
 	"syscall"
+	"time"
 
 	"github.com/gogo/protobuf/proto"
 	"github.com/pkg/errors"
@@ -86,6 +87,10 @@ func (c *Client) Call(ctx context.Context, service, method string, req, resp int
 		cresp = &Response{}
 	)
 
+	if dl, ok := ctx.Deadline(); ok {
+		creq.TimeoutNano = dl.Sub(time.Now()).Nanoseconds()
+	}
+
 	if err := c.dispatch(ctx, creq, cresp); err != nil {
 		return err
 	}
@@ -104,6 +109,7 @@ func (c *Client) Call(ctx context.Context, service, method string, req, resp int
 func (c *Client) dispatch(ctx context.Context, req *Request, resp *Response) error {
 	errs := make(chan error, 1)
 	call := &callRequest{
+		ctx:  ctx,
 		req:  req,
 		resp: resp,
 		errs: errs,

vendor/github.com/containerd/ttrpc/server.go

@@ -414,6 +414,9 @@ func (c *serverConn) run(sctx context.Context) {
 		case request := <-requests:
 			active++
 			go func(id uint32) {
+				ctx, cancel := getRequestContext(ctx, request.req)
+				defer cancel()
+
 				p, status := c.server.services.call(ctx, request.req.Service, request.req.Method, request.req.Payload)
 				resp := &Response{
 					Status:  status.Proto(),
@@ -454,3 +457,15 @@ func (c *serverConn) run(sctx context.Context) {
 		}
 	}
 }
+
+var noopFunc = func() {}
+
+func getRequestContext(ctx context.Context, req *Request) (retCtx context.Context, cancel func()) {
+	cancel = noopFunc
+	if req.TimeoutNano == 0 {
+		return ctx, cancel
+	}
+
+	ctx, cancel = context.WithTimeout(ctx, time.Duration(req.TimeoutNano))
+	return ctx, cancel
+}

vendor/github.com/containerd/ttrpc/types.go

@@ -26,6 +26,7 @@ type Request struct {
 	Service     string `protobuf:"bytes,1,opt,name=service,proto3"`
 	Method      string `protobuf:"bytes,2,opt,name=method,proto3"`
 	Payload     []byte `protobuf:"bytes,3,opt,name=payload,proto3"`
+	TimeoutNano int64  `protobuf:"varint,4,opt,name=timeout_nano,proto3"`
 }
 
 func (r *Request) Reset()         { *r = Request{} }