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Serguei Bezverkhi
2018-01-09 13:57:14 -05:00
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64
vendor/google.golang.org/grpc/examples/README.md generated vendored Normal file
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gRPC in 3 minutes (Go)
======================
BACKGROUND
-------------
For this sample, we've already generated the server and client stubs from [helloworld.proto](helloworld/helloworld/helloworld.proto).
PREREQUISITES
-------------
- This requires Go 1.6 or later
- Requires that [GOPATH is set](https://golang.org/doc/code.html#GOPATH)
```
$ go help gopath
$ # ensure the PATH contains $GOPATH/bin
$ export PATH=$PATH:$GOPATH/bin
```
INSTALL
-------
```
$ go get -u google.golang.org/grpc/examples/helloworld/greeter_client
$ go get -u google.golang.org/grpc/examples/helloworld/greeter_server
```
TRY IT!
-------
- Run the server
```
$ greeter_server &
```
- Run the client
```
$ greeter_client
```
OPTIONAL - Rebuilding the generated code
----------------------------------------
1. Install [protobuf compiler](https://github.com/google/protobuf/blob/master/README.md#protocol-compiler-installation)
1. Install the protoc Go plugin
```
$ go get -u github.com/golang/protobuf/protoc-gen-go
```
1. Rebuild the generated Go code
```
$ go generate google.golang.org/grpc/examples/helloworld/...
```
Or run `protoc` command (with the grpc plugin)
```
$ protoc -I helloworld/ helloworld/helloworld.proto --go_out=plugins=grpc:helloworld
```

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vendor/google.golang.org/grpc/examples/gotutorial.md generated vendored Normal file
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# gRPC Basics: Go
This tutorial provides a basic Go programmer's introduction to working with gRPC. By walking through this example you'll learn how to:
- Define a service in a `.proto` file.
- Generate server and client code using the protocol buffer compiler.
- Use the Go gRPC API to write a simple client and server for your service.
It assumes that you have read the [Getting started](https://github.com/grpc/grpc/tree/master/examples) guide and are familiar with [protocol buffers](https://developers.google.com/protocol-buffers/docs/overview). Note that the example in this tutorial uses the proto3 version of the protocol buffers language, you can find out more in the [proto3 language guide](https://developers.google.com/protocol-buffers/docs/proto3) and see the [release notes](https://github.com/google/protobuf/releases) for the new version in the protocol buffers Github repository.
This isn't a comprehensive guide to using gRPC in Go: more reference documentation is coming soon.
## Why use gRPC?
Our example is a simple route mapping application that lets clients get information about features on their route, create a summary of their route, and exchange route information such as traffic updates with the server and other clients.
With gRPC we can define our service once in a `.proto` file and implement clients and servers in any of gRPC's supported languages, which in turn can be run in environments ranging from servers inside Google to your own tablet - all the complexity of communication between different languages and environments is handled for you by gRPC. We also get all the advantages of working with protocol buffers, including efficient serialization, a simple IDL, and easy interface updating.
## Example code and setup
The example code for our tutorial is in [grpc/grpc-go/examples/route_guide](https://github.com/grpc/grpc-go/tree/master/examples/route_guide). To download the example, clone the `grpc-go` repository by running the following command:
```shell
$ go get google.golang.org/grpc
```
Then change your current directory to `grpc-go/examples/route_guide`:
```shell
$ cd $GOPATH/src/google.golang.org/grpc/examples/route_guide
```
You also should have the relevant tools installed to generate the server and client interface code - if you don't already, follow the setup instructions in [the Go quick start guide](https://github.com/grpc/grpc-go/tree/master/examples/).
## Defining the service
Our first step (as you'll know from the [quick start](https://grpc.io/docs/#quick-start)) is to define the gRPC *service* and the method *request* and *response* types using [protocol buffers](https://developers.google.com/protocol-buffers/docs/overview). You can see the complete `.proto` file in [examples/route_guide/routeguide/route_guide.proto](https://github.com/grpc/grpc-go/tree/master/examples/route_guide/routeguide/route_guide.proto).
To define a service, you specify a named `service` in your `.proto` file:
```proto
service RouteGuide {
...
}
```
Then you define `rpc` methods inside your service definition, specifying their request and response types. gRPC lets you define four kinds of service method, all of which are used in the `RouteGuide` service:
- A *simple RPC* where the client sends a request to the server using the stub and waits for a response to come back, just like a normal function call.
```proto
// Obtains the feature at a given position.
rpc GetFeature(Point) returns (Feature) {}
```
- A *server-side streaming RPC* where the client sends a request to the server and gets a stream to read a sequence of messages back. The client reads from the returned stream until there are no more messages. As you can see in our example, you specify a server-side streaming method by placing the `stream` keyword before the *response* type.
```proto
// Obtains the Features available within the given Rectangle. Results are
// streamed rather than returned at once (e.g. in a response message with a
// repeated field), as the rectangle may cover a large area and contain a
// huge number of features.
rpc ListFeatures(Rectangle) returns (stream Feature) {}
```
- A *client-side streaming RPC* where the client writes a sequence of messages and sends them to the server, again using a provided stream. Once the client has finished writing the messages, it waits for the server to read them all and return its response. You specify a client-side streaming method by placing the `stream` keyword before the *request* type.
```proto
// Accepts a stream of Points on a route being traversed, returning a
// RouteSummary when traversal is completed.
rpc RecordRoute(stream Point) returns (RouteSummary) {}
```
- A *bidirectional streaming RPC* where both sides send a sequence of messages using a read-write stream. The two streams operate independently, so clients and servers can read and write in whatever order they like: for example, the server could wait to receive all the client messages before writing its responses, or it could alternately read a message then write a message, or some other combination of reads and writes. The order of messages in each stream is preserved. You specify this type of method by placing the `stream` keyword before both the request and the response.
```proto
// Accepts a stream of RouteNotes sent while a route is being traversed,
// while receiving other RouteNotes (e.g. from other users).
rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
```
Our `.proto` file also contains protocol buffer message type definitions for all the request and response types used in our service methods - for example, here's the `Point` message type:
```proto
// Points are represented as latitude-longitude pairs in the E7 representation
// (degrees multiplied by 10**7 and rounded to the nearest integer).
// Latitudes should be in the range +/- 90 degrees and longitude should be in
// the range +/- 180 degrees (inclusive).
message Point {
int32 latitude = 1;
int32 longitude = 2;
}
```
## Generating client and server code
Next we need to generate the gRPC client and server interfaces from our `.proto` service definition. We do this using the protocol buffer compiler `protoc` with a special gRPC Go plugin.
For simplicity, we've provided a [bash script](https://github.com/grpc/grpc-go/blob/master/codegen.sh) that runs `protoc` for you with the appropriate plugin, input, and output (if you want to run this by yourself, make sure you've installed protoc and followed the gRPC-Go [installation instructions](https://github.com/grpc/grpc-go/blob/master/README.md) first):
```shell
$ codegen.sh route_guide.proto
```
which actually runs:
```shell
$ protoc --go_out=plugins=grpc:. route_guide.proto
```
Running this command generates the following file in your current directory:
- `route_guide.pb.go`
This contains:
- All the protocol buffer code to populate, serialize, and retrieve our request and response message types
- An interface type (or *stub*) for clients to call with the methods defined in the `RouteGuide` service.
- An interface type for servers to implement, also with the methods defined in the `RouteGuide` service.
<a name="server"></a>
## Creating the server
First let's look at how we create a `RouteGuide` server. If you're only interested in creating gRPC clients, you can skip this section and go straight to [Creating the client](#client) (though you might find it interesting anyway!).
There are two parts to making our `RouteGuide` service do its job:
- Implementing the service interface generated from our service definition: doing the actual "work" of our service.
- Running a gRPC server to listen for requests from clients and dispatch them to the right service implementation.
You can find our example `RouteGuide` server in [grpc-go/examples/route_guide/server/server.go](https://github.com/grpc/grpc-go/tree/master/examples/route_guide/server/server.go). Let's take a closer look at how it works.
### Implementing RouteGuide
As you can see, our server has a `routeGuideServer` struct type that implements the generated `RouteGuideServer` interface:
```go
type routeGuideServer struct {
...
}
...
func (s *routeGuideServer) GetFeature(ctx context.Context, point *pb.Point) (*pb.Feature, error) {
...
}
...
func (s *routeGuideServer) ListFeatures(rect *pb.Rectangle, stream pb.RouteGuide_ListFeaturesServer) error {
...
}
...
func (s *routeGuideServer) RecordRoute(stream pb.RouteGuide_RecordRouteServer) error {
...
}
...
func (s *routeGuideServer) RouteChat(stream pb.RouteGuide_RouteChatServer) error {
...
}
...
```
#### Simple RPC
`routeGuideServer` implements all our service methods. Let's look at the simplest type first, `GetFeature`, which just gets a `Point` from the client and returns the corresponding feature information from its database in a `Feature`.
```go
func (s *routeGuideServer) GetFeature(ctx context.Context, point *pb.Point) (*pb.Feature, error) {
for _, feature := range s.savedFeatures {
if proto.Equal(feature.Location, point) {
return feature, nil
}
}
// No feature was found, return an unnamed feature
return &pb.Feature{"", point}, nil
}
```
The method is passed a context object for the RPC and the client's `Point` protocol buffer request. It returns a `Feature` protocol buffer object with the response information and an `error`. In the method we populate the `Feature` with the appropriate information, and then `return` it along with an `nil` error to tell gRPC that we've finished dealing with the RPC and that the `Feature` can be returned to the client.
#### Server-side streaming RPC
Now let's look at one of our streaming RPCs. `ListFeatures` is a server-side streaming RPC, so we need to send back multiple `Feature`s to our client.
```go
func (s *routeGuideServer) ListFeatures(rect *pb.Rectangle, stream pb.RouteGuide_ListFeaturesServer) error {
for _, feature := range s.savedFeatures {
if inRange(feature.Location, rect) {
if err := stream.Send(feature); err != nil {
return err
}
}
}
return nil
}
```
As you can see, instead of getting simple request and response objects in our method parameters, this time we get a request object (the `Rectangle` in which our client wants to find `Feature`s) and a special `RouteGuide_ListFeaturesServer` object to write our responses.
In the method, we populate as many `Feature` objects as we need to return, writing them to the `RouteGuide_ListFeaturesServer` using its `Send()` method. Finally, as in our simple RPC, we return a `nil` error to tell gRPC that we've finished writing responses. Should any error happen in this call, we return a non-`nil` error; the gRPC layer will translate it into an appropriate RPC status to be sent on the wire.
#### Client-side streaming RPC
Now let's look at something a little more complicated: the client-side streaming method `RecordRoute`, where we get a stream of `Point`s from the client and return a single `RouteSummary` with information about their trip. As you can see, this time the method doesn't have a request parameter at all. Instead, it gets a `RouteGuide_RecordRouteServer` stream, which the server can use to both read *and* write messages - it can receive client messages using its `Recv()` method and return its single response using its `SendAndClose()` method.
```go
func (s *routeGuideServer) RecordRoute(stream pb.RouteGuide_RecordRouteServer) error {
var pointCount, featureCount, distance int32
var lastPoint *pb.Point
startTime := time.Now()
for {
point, err := stream.Recv()
if err == io.EOF {
endTime := time.Now()
return stream.SendAndClose(&pb.RouteSummary{
PointCount: pointCount,
FeatureCount: featureCount,
Distance: distance,
ElapsedTime: int32(endTime.Sub(startTime).Seconds()),
})
}
if err != nil {
return err
}
pointCount++
for _, feature := range s.savedFeatures {
if proto.Equal(feature.Location, point) {
featureCount++
}
}
if lastPoint != nil {
distance += calcDistance(lastPoint, point)
}
lastPoint = point
}
}
```
In the method body we use the `RouteGuide_RecordRouteServer`s `Recv()` method to repeatedly read in our client's requests to a request object (in this case a `Point`) until there are no more messages: the server needs to check the the error returned from `Recv()` after each call. If this is `nil`, the stream is still good and it can continue reading; if it's `io.EOF` the message stream has ended and the server can return its `RouteSummary`. If it has any other value, we return the error "as is" so that it'll be translated to an RPC status by the gRPC layer.
#### Bidirectional streaming RPC
Finally, let's look at our bidirectional streaming RPC `RouteChat()`.
```go
func (s *routeGuideServer) RouteChat(stream pb.RouteGuide_RouteChatServer) error {
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
key := serialize(in.Location)
... // look for notes to be sent to client
for _, note := range s.routeNotes[key] {
if err := stream.Send(note); err != nil {
return err
}
}
}
}
```
This time we get a `RouteGuide_RouteChatServer` stream that, as in our client-side streaming example, can be used to read and write messages. However, this time we return values via our method's stream while the client is still writing messages to *their* message stream.
The syntax for reading and writing here is very similar to our client-streaming method, except the server uses the stream's `Send()` method rather than `SendAndClose()` because it's writing multiple responses. Although each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
### Starting the server
Once we've implemented all our methods, we also need to start up a gRPC server so that clients can actually use our service. The following snippet shows how we do this for our `RouteGuide` service:
```go
flag.Parse()
lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", *port))
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
grpcServer := grpc.NewServer()
pb.RegisterRouteGuideServer(grpcServer, &routeGuideServer{})
... // determine whether to use TLS
grpcServer.Serve(lis)
```
To build and start a server, we:
1. Specify the port we want to use to listen for client requests using `lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", *port))`.
2. Create an instance of the gRPC server using `grpc.NewServer()`.
3. Register our service implementation with the gRPC server.
4. Call `Serve()` on the server with our port details to do a blocking wait until the process is killed or `Stop()` is called.
<a name="client"></a>
## Creating the client
In this section, we'll look at creating a Go client for our `RouteGuide` service. You can see our complete example client code in [grpc-go/examples/route_guide/client/client.go](https://github.com/grpc/grpc-go/tree/master/examples/route_guide/client/client.go).
### Creating a stub
To call service methods, we first need to create a gRPC *channel* to communicate with the server. We create this by passing the server address and port number to `grpc.Dial()` as follows:
```go
conn, err := grpc.Dial(*serverAddr)
if err != nil {
...
}
defer conn.Close()
```
You can use `DialOptions` to set the auth credentials (e.g., TLS, GCE credentials, JWT credentials) in `grpc.Dial` if the service you request requires that - however, we don't need to do this for our `RouteGuide` service.
Once the gRPC *channel* is setup, we need a client *stub* to perform RPCs. We get this using the `NewRouteGuideClient` method provided in the `pb` package we generated from our `.proto` file.
```go
client := pb.NewRouteGuideClient(conn)
```
### Calling service methods
Now let's look at how we call our service methods. Note that in gRPC-Go, RPCs operate in a blocking/synchronous mode, which means that the RPC call waits for the server to respond, and will either return a response or an error.
#### Simple RPC
Calling the simple RPC `GetFeature` is nearly as straightforward as calling a local method.
```go
feature, err := client.GetFeature(context.Background(), &pb.Point{409146138, -746188906})
if err != nil {
...
}
```
As you can see, we call the method on the stub we got earlier. In our method parameters we create and populate a request protocol buffer object (in our case `Point`). We also pass a `context.Context` object which lets us change our RPC's behaviour if necessary, such as time-out/cancel an RPC in flight. If the call doesn't return an error, then we can read the response information from the server from the first return value.
```go
log.Println(feature)
```
#### Server-side streaming RPC
Here's where we call the server-side streaming method `ListFeatures`, which returns a stream of geographical `Feature`s. If you've already read [Creating the server](#server) some of this may look very familiar - streaming RPCs are implemented in a similar way on both sides.
```go
rect := &pb.Rectangle{ ... } // initialize a pb.Rectangle
stream, err := client.ListFeatures(context.Background(), rect)
if err != nil {
...
}
for {
feature, err := stream.Recv()
if err == io.EOF {
break
}
if err != nil {
log.Fatalf("%v.ListFeatures(_) = _, %v", client, err)
}
log.Println(feature)
}
```
As in the simple RPC, we pass the method a context and a request. However, instead of getting a response object back, we get back an instance of `RouteGuide_ListFeaturesClient`. The client can use the `RouteGuide_ListFeaturesClient` stream to read the server's responses.
We use the `RouteGuide_ListFeaturesClient`'s `Recv()` method to repeatedly read in the server's responses to a response protocol buffer object (in this case a `Feature`) until there are no more messages: the client needs to check the error `err` returned from `Recv()` after each call. If `nil`, the stream is still good and it can continue reading; if it's `io.EOF` then the message stream has ended; otherwise there must be an RPC error, which is passed over through `err`.
#### Client-side streaming RPC
The client-side streaming method `RecordRoute` is similar to the server-side method, except that we only pass the method a context and get a `RouteGuide_RecordRouteClient` stream back, which we can use to both write *and* read messages.
```go
// Create a random number of random points
r := rand.New(rand.NewSource(time.Now().UnixNano()))
pointCount := int(r.Int31n(100)) + 2 // Traverse at least two points
var points []*pb.Point
for i := 0; i < pointCount; i++ {
points = append(points, randomPoint(r))
}
log.Printf("Traversing %d points.", len(points))
stream, err := client.RecordRoute(context.Background())
if err != nil {
log.Fatalf("%v.RecordRoute(_) = _, %v", client, err)
}
for _, point := range points {
if err := stream.Send(point); err != nil {
log.Fatalf("%v.Send(%v) = %v", stream, point, err)
}
}
reply, err := stream.CloseAndRecv()
if err != nil {
log.Fatalf("%v.CloseAndRecv() got error %v, want %v", stream, err, nil)
}
log.Printf("Route summary: %v", reply)
```
The `RouteGuide_RecordRouteClient` has a `Send()` method that we can use to send requests to the server. Once we've finished writing our client's requests to the stream using `Send()`, we need to call `CloseAndRecv()` on the stream to let gRPC know that we've finished writing and are expecting to receive a response. We get our RPC status from the `err` returned from `CloseAndRecv()`. If the status is `nil`, then the first return value from `CloseAndRecv()` will be a valid server response.
#### Bidirectional streaming RPC
Finally, let's look at our bidirectional streaming RPC `RouteChat()`. As in the case of `RecordRoute`, we only pass the method a context object and get back a stream that we can use to both write and read messages. However, this time we return values via our method's stream while the server is still writing messages to *their* message stream.
```go
stream, err := client.RouteChat(context.Background())
waitc := make(chan struct{})
go func() {
for {
in, err := stream.Recv()
if err == io.EOF {
// read done.
close(waitc)
return
}
if err != nil {
log.Fatalf("Failed to receive a note : %v", err)
}
log.Printf("Got message %s at point(%d, %d)", in.Message, in.Location.Latitude, in.Location.Longitude)
}
}()
for _, note := range notes {
if err := stream.Send(note); err != nil {
log.Fatalf("Failed to send a note: %v", err)
}
}
stream.CloseSend()
<-waitc
```
The syntax for reading and writing here is very similar to our client-side streaming method, except we use the stream's `CloseSend()` method once we've finished our call. Although each side will always get the other's messages in the order they were written, both the client and server can read and write in any order — the streams operate completely independently.
## Try it out!
To compile and run the server, assuming you are in the folder
`$GOPATH/src/google.golang.org/grpc/examples/route_guide`, simply:
```sh
$ go run server/server.go
```
Likewise, to run the client:
```sh
$ go run client/client.go
```

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vendor/google.golang.org/grpc/examples/helloworld/greeter_client/main.go generated vendored Normal file
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
package main
import (
"log"
"os"
"golang.org/x/net/context"
"google.golang.org/grpc"
pb "google.golang.org/grpc/examples/helloworld/helloworld"
)
const (
address = "localhost:50051"
defaultName = "world"
)
func main() {
// Set up a connection to the server.
conn, err := grpc.Dial(address, grpc.WithInsecure())
if err != nil {
log.Fatalf("did not connect: %v", err)
}
defer conn.Close()
c := pb.NewGreeterClient(conn)
// Contact the server and print out its response.
name := defaultName
if len(os.Args) > 1 {
name = os.Args[1]
}
r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name})
if err != nil {
log.Fatalf("could not greet: %v", err)
}
log.Printf("Greeting: %s", r.Message)
}

57
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
//go:generate protoc -I ../helloworld --go_out=plugins=grpc:../helloworld ../helloworld/helloworld.proto
package main
import (
"log"
"net"
"golang.org/x/net/context"
"google.golang.org/grpc"
pb "google.golang.org/grpc/examples/helloworld/helloworld"
"google.golang.org/grpc/reflection"
)
const (
port = ":50051"
)
// server is used to implement helloworld.GreeterServer.
type server struct{}
// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
return &pb.HelloReply{Message: "Hello " + in.Name}, nil
}
func main() {
lis, err := net.Listen("tcp", port)
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
pb.RegisterGreeterServer(s, &server{})
// Register reflection service on gRPC server.
reflection.Register(s)
if err := s.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}

164
vendor/google.golang.org/grpc/examples/helloworld/helloworld/helloworld.pb.go generated vendored Normal file
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// Code generated by protoc-gen-go. DO NOT EDIT.
// source: helloworld.proto
/*
Package helloworld is a generated protocol buffer package.
It is generated from these files:
helloworld.proto
It has these top-level messages:
HelloRequest
HelloReply
*/
package helloworld
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
// The request message containing the user's name.
type HelloRequest struct {
Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
}
func (m *HelloRequest) Reset() { *m = HelloRequest{} }
func (m *HelloRequest) String() string { return proto.CompactTextString(m) }
func (*HelloRequest) ProtoMessage() {}
func (*HelloRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (m *HelloRequest) GetName() string {
if m != nil {
return m.Name
}
return ""
}
// The response message containing the greetings
type HelloReply struct {
Message string `protobuf:"bytes,1,opt,name=message" json:"message,omitempty"`
}
func (m *HelloReply) Reset() { *m = HelloReply{} }
func (m *HelloReply) String() string { return proto.CompactTextString(m) }
func (*HelloReply) ProtoMessage() {}
func (*HelloReply) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *HelloReply) GetMessage() string {
if m != nil {
return m.Message
}
return ""
}
func init() {
proto.RegisterType((*HelloRequest)(nil), "helloworld.HelloRequest")
proto.RegisterType((*HelloReply)(nil), "helloworld.HelloReply")
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// Client API for Greeter service
type GreeterClient interface {
// Sends a greeting
SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
}
type greeterClient struct {
cc *grpc.ClientConn
}
func NewGreeterClient(cc *grpc.ClientConn) GreeterClient {
return &greeterClient{cc}
}
func (c *greeterClient) SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error) {
out := new(HelloReply)
err := grpc.Invoke(ctx, "/helloworld.Greeter/SayHello", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for Greeter service
type GreeterServer interface {
// Sends a greeting
SayHello(context.Context, *HelloRequest) (*HelloReply, error)
}
func RegisterGreeterServer(s *grpc.Server, srv GreeterServer) {
s.RegisterService(&_Greeter_serviceDesc, srv)
}
func _Greeter_SayHello_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(HelloRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(GreeterServer).SayHello(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/helloworld.Greeter/SayHello",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(GreeterServer).SayHello(ctx, req.(*HelloRequest))
}
return interceptor(ctx, in, info, handler)
}
var _Greeter_serviceDesc = grpc.ServiceDesc{
ServiceName: "helloworld.Greeter",
HandlerType: (*GreeterServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "SayHello",
Handler: _Greeter_SayHello_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "helloworld.proto",
}
func init() { proto.RegisterFile("helloworld.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 175 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0xc8, 0x48, 0xcd, 0xc9,
0xc9, 0x2f, 0xcf, 0x2f, 0xca, 0x49, 0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x42, 0x88,
0x28, 0x29, 0x71, 0xf1, 0x78, 0x80, 0x78, 0x41, 0xa9, 0x85, 0xa5, 0xa9, 0xc5, 0x25, 0x42, 0x42,
0x5c, 0x2c, 0x79, 0x89, 0xb9, 0xa9, 0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0x9c, 0x41, 0x60, 0xb6, 0x92,
0x1a, 0x17, 0x17, 0x54, 0x4d, 0x41, 0x4e, 0xa5, 0x90, 0x04, 0x17, 0x7b, 0x6e, 0x6a, 0x71, 0x71,
0x62, 0x3a, 0x4c, 0x11, 0x8c, 0x6b, 0xe4, 0xc9, 0xc5, 0xee, 0x5e, 0x94, 0x9a, 0x5a, 0x92, 0x5a,
0x24, 0x64, 0xc7, 0xc5, 0x11, 0x9c, 0x58, 0x09, 0xd6, 0x25, 0x24, 0xa1, 0x87, 0xe4, 0x02, 0x64,
0xcb, 0xa4, 0xc4, 0xb0, 0xc8, 0x14, 0xe4, 0x54, 0x2a, 0x31, 0x38, 0x19, 0x70, 0x49, 0x67, 0xe6,
0xeb, 0xa5, 0x17, 0x15, 0x24, 0xeb, 0xa5, 0x56, 0x24, 0xe6, 0x16, 0xe4, 0xa4, 0x16, 0x23, 0xa9,
0x75, 0xe2, 0x07, 0x2b, 0x0e, 0x07, 0xb1, 0x03, 0x40, 0x5e, 0x0a, 0x60, 0x4c, 0x62, 0x03, 0xfb,
0xcd, 0x18, 0x10, 0x00, 0x00, 0xff, 0xff, 0x0f, 0xb7, 0xcd, 0xf2, 0xef, 0x00, 0x00, 0x00,
}

37
vendor/google.golang.org/grpc/examples/helloworld/helloworld/helloworld.proto generated vendored Normal file
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// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// 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.
syntax = "proto3";
option java_multiple_files = true;
option java_package = "io.grpc.examples.helloworld";
option java_outer_classname = "HelloWorldProto";
package helloworld;
// The greeting service definition.
service Greeter {
// Sends a greeting
rpc SayHello (HelloRequest) returns (HelloReply) {}
}
// The request message containing the user's name.
message HelloRequest {
string name = 1;
}
// The response message containing the greetings
message HelloReply {
string message = 1;
}

48
vendor/google.golang.org/grpc/examples/helloworld/mock_helloworld/hw_mock.go generated vendored Normal file
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// Automatically generated by MockGen. DO NOT EDIT!
// Source: google.golang.org/grpc/examples/helloworld/helloworld (interfaces: GreeterClient)
package mock_helloworld
import (
gomock "github.com/golang/mock/gomock"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
helloworld "google.golang.org/grpc/examples/helloworld/helloworld"
)
// Mock of GreeterClient interface
type MockGreeterClient struct {
ctrl *gomock.Controller
recorder *_MockGreeterClientRecorder
}
// Recorder for MockGreeterClient (not exported)
type _MockGreeterClientRecorder struct {
mock *MockGreeterClient
}
func NewMockGreeterClient(ctrl *gomock.Controller) *MockGreeterClient {
mock := &MockGreeterClient{ctrl: ctrl}
mock.recorder = &_MockGreeterClientRecorder{mock}
return mock
}
func (_m *MockGreeterClient) EXPECT() *_MockGreeterClientRecorder {
return _m.recorder
}
func (_m *MockGreeterClient) SayHello(_param0 context.Context, _param1 *helloworld.HelloRequest, _param2 ...grpc.CallOption) (*helloworld.HelloReply, error) {
_s := []interface{}{_param0, _param1}
for _, _x := range _param2 {
_s = append(_s, _x)
}
ret := _m.ctrl.Call(_m, "SayHello", _s...)
ret0, _ := ret[0].(*helloworld.HelloReply)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockGreeterClientRecorder) SayHello(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
_s := append([]interface{}{arg0, arg1}, arg2...)
return _mr.mock.ctrl.RecordCall(_mr.mock, "SayHello", _s...)
}

67
vendor/google.golang.org/grpc/examples/helloworld/mock_helloworld/hw_mock_test.go generated vendored Normal file
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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
package mock_helloworld_test
import (
"fmt"
"testing"
"github.com/golang/mock/gomock"
"github.com/golang/protobuf/proto"
"golang.org/x/net/context"
helloworld "google.golang.org/grpc/examples/helloworld/helloworld"
hwmock "google.golang.org/grpc/examples/helloworld/mock_helloworld"
)
// rpcMsg implements the gomock.Matcher interface
type rpcMsg struct {
msg proto.Message
}
func (r *rpcMsg) Matches(msg interface{}) bool {
m, ok := msg.(proto.Message)
if !ok {
return false
}
return proto.Equal(m, r.msg)
}
func (r *rpcMsg) String() string {
return fmt.Sprintf("is %s", r.msg)
}
func TestSayHello(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
mockGreeterClient := hwmock.NewMockGreeterClient(ctrl)
req := &helloworld.HelloRequest{Name: "unit_test"}
mockGreeterClient.EXPECT().SayHello(
gomock.Any(),
&rpcMsg{msg: req},
).Return(&helloworld.HelloReply{Message: "Mocked Interface"}, nil)
testSayHello(t, mockGreeterClient)
}
func testSayHello(t *testing.T, client helloworld.GreeterClient) {
r, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: "unit_test"})
if err != nil || r.Message != "Mocked Interface" {
t.Errorf("mocking failed")
}
t.Log("Reply : ", r.Message)
}

35
vendor/google.golang.org/grpc/examples/route_guide/README.md generated vendored Normal file
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# Description
The route guide server and client demonstrate how to use grpc go libraries to
perform unary, client streaming, server streaming and full duplex RPCs.
Please refer to [gRPC Basics: Go](https://grpc.io/docs/tutorials/basic/go.html) for more information.
See the definition of the route guide service in routeguide/route_guide.proto.
# Run the sample code
To compile and run the server, assuming you are in the root of the route_guide
folder, i.e., .../examples/route_guide/, simply:
```sh
$ go run server/server.go
```
Likewise, to run the client:
```sh
$ go run client/client.go
```
# Optional command line flags
The server and client both take optional command line flags. For example, the
client and server run without TLS by default. To enable TLS:
```sh
$ go run server/server.go -tls=true
```
and
```sh
$ go run client/client.go -tls=true
```

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vendor/google.golang.org/grpc/examples/route_guide/client/client.go generated vendored Normal file
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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
// Package main implements a simple gRPC client that demonstrates how to use gRPC-Go libraries
// to perform unary, client streaming, server streaming and full duplex RPCs.
//
// It interacts with the route guide service whose definition can be found in routeguide/route_guide.proto.
package main
import (
"flag"
"io"
"log"
"math/rand"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
pb "google.golang.org/grpc/examples/route_guide/routeguide"
"google.golang.org/grpc/testdata"
)
var (
tls = flag.Bool("tls", false, "Connection uses TLS if true, else plain TCP")
caFile = flag.String("ca_file", "", "The file containning the CA root cert file")
serverAddr = flag.String("server_addr", "127.0.0.1:10000", "The server address in the format of host:port")
serverHostOverride = flag.String("server_host_override", "x.test.youtube.com", "The server name use to verify the hostname returned by TLS handshake")
)
// printFeature gets the feature for the given point.
func printFeature(client pb.RouteGuideClient, point *pb.Point) {
log.Printf("Getting feature for point (%d, %d)", point.Latitude, point.Longitude)
feature, err := client.GetFeature(context.Background(), point)
if err != nil {
log.Fatalf("%v.GetFeatures(_) = _, %v: ", client, err)
}
log.Println(feature)
}
// printFeatures lists all the features within the given bounding Rectangle.
func printFeatures(client pb.RouteGuideClient, rect *pb.Rectangle) {
log.Printf("Looking for features within %v", rect)
stream, err := client.ListFeatures(context.Background(), rect)
if err != nil {
log.Fatalf("%v.ListFeatures(_) = _, %v", client, err)
}
for {
feature, err := stream.Recv()
if err == io.EOF {
break
}
if err != nil {
log.Fatalf("%v.ListFeatures(_) = _, %v", client, err)
}
log.Println(feature)
}
}
// runRecordRoute sends a sequence of points to server and expects to get a RouteSummary from server.
func runRecordRoute(client pb.RouteGuideClient) {
// Create a random number of random points
r := rand.New(rand.NewSource(time.Now().UnixNano()))
pointCount := int(r.Int31n(100)) + 2 // Traverse at least two points
var points []*pb.Point
for i := 0; i < pointCount; i++ {
points = append(points, randomPoint(r))
}
log.Printf("Traversing %d points.", len(points))
stream, err := client.RecordRoute(context.Background())
if err != nil {
log.Fatalf("%v.RecordRoute(_) = _, %v", client, err)
}
for _, point := range points {
if err := stream.Send(point); err != nil {
log.Fatalf("%v.Send(%v) = %v", stream, point, err)
}
}
reply, err := stream.CloseAndRecv()
if err != nil {
log.Fatalf("%v.CloseAndRecv() got error %v, want %v", stream, err, nil)
}
log.Printf("Route summary: %v", reply)
}
// runRouteChat receives a sequence of route notes, while sending notes for various locations.
func runRouteChat(client pb.RouteGuideClient) {
notes := []*pb.RouteNote{
{&pb.Point{Latitude: 0, Longitude: 1}, "First message"},
{&pb.Point{Latitude: 0, Longitude: 2}, "Second message"},
{&pb.Point{Latitude: 0, Longitude: 3}, "Third message"},
{&pb.Point{Latitude: 0, Longitude: 1}, "Fourth message"},
{&pb.Point{Latitude: 0, Longitude: 2}, "Fifth message"},
{&pb.Point{Latitude: 0, Longitude: 3}, "Sixth message"},
}
stream, err := client.RouteChat(context.Background())
if err != nil {
log.Fatalf("%v.RouteChat(_) = _, %v", client, err)
}
waitc := make(chan struct{})
go func() {
for {
in, err := stream.Recv()
if err == io.EOF {
// read done.
close(waitc)
return
}
if err != nil {
log.Fatalf("Failed to receive a note : %v", err)
}
log.Printf("Got message %s at point(%d, %d)", in.Message, in.Location.Latitude, in.Location.Longitude)
}
}()
for _, note := range notes {
if err := stream.Send(note); err != nil {
log.Fatalf("Failed to send a note: %v", err)
}
}
stream.CloseSend()
<-waitc
}
func randomPoint(r *rand.Rand) *pb.Point {
lat := (r.Int31n(180) - 90) * 1e7
long := (r.Int31n(360) - 180) * 1e7
return &pb.Point{Latitude: lat, Longitude: long}
}
func main() {
flag.Parse()
var opts []grpc.DialOption
if *tls {
if *caFile == "" {
*caFile = testdata.Path("ca.pem")
}
creds, err := credentials.NewClientTLSFromFile(*caFile, *serverHostOverride)
if err != nil {
log.Fatalf("Failed to create TLS credentials %v", err)
}
opts = append(opts, grpc.WithTransportCredentials(creds))
} else {
opts = append(opts, grpc.WithInsecure())
}
conn, err := grpc.Dial(*serverAddr, opts...)
if err != nil {
log.Fatalf("fail to dial: %v", err)
}
defer conn.Close()
client := pb.NewRouteGuideClient(conn)
// Looking for a valid feature
printFeature(client, &pb.Point{Latitude: 409146138, Longitude: -746188906})
// Feature missing.
printFeature(client, &pb.Point{Latitude: 0, Longitude: 0})
// Looking for features between 40, -75 and 42, -73.
printFeatures(client, &pb.Rectangle{
Lo: &pb.Point{Latitude: 400000000, Longitude: -750000000},
Hi: &pb.Point{Latitude: 420000000, Longitude: -730000000},
})
// RecordRoute
runRecordRoute(client)
// RouteChat
runRouteChat(client)
}

200
vendor/google.golang.org/grpc/examples/route_guide/mock_routeguide/rg_mock.go generated vendored Normal file
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// Automatically generated by MockGen. DO NOT EDIT!
// Source: google.golang.org/grpc/examples/route_guide/routeguide (interfaces: RouteGuideClient,RouteGuide_RouteChatClient)
package mock_routeguide
import (
gomock "github.com/golang/mock/gomock"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
routeguide "google.golang.org/grpc/examples/route_guide/routeguide"
metadata "google.golang.org/grpc/metadata"
)
// Mock of RouteGuideClient interface
type MockRouteGuideClient struct {
ctrl *gomock.Controller
recorder *_MockRouteGuideClientRecorder
}
// Recorder for MockRouteGuideClient (not exported)
type _MockRouteGuideClientRecorder struct {
mock *MockRouteGuideClient
}
func NewMockRouteGuideClient(ctrl *gomock.Controller) *MockRouteGuideClient {
mock := &MockRouteGuideClient{ctrl: ctrl}
mock.recorder = &_MockRouteGuideClientRecorder{mock}
return mock
}
func (_m *MockRouteGuideClient) EXPECT() *_MockRouteGuideClientRecorder {
return _m.recorder
}
func (_m *MockRouteGuideClient) GetFeature(_param0 context.Context, _param1 *routeguide.Point, _param2 ...grpc.CallOption) (*routeguide.Feature, error) {
_s := []interface{}{_param0, _param1}
for _, _x := range _param2 {
_s = append(_s, _x)
}
ret := _m.ctrl.Call(_m, "GetFeature", _s...)
ret0, _ := ret[0].(*routeguide.Feature)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuideClientRecorder) GetFeature(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
_s := append([]interface{}{arg0, arg1}, arg2...)
return _mr.mock.ctrl.RecordCall(_mr.mock, "GetFeature", _s...)
}
func (_m *MockRouteGuideClient) ListFeatures(_param0 context.Context, _param1 *routeguide.Rectangle, _param2 ...grpc.CallOption) (routeguide.RouteGuide_ListFeaturesClient, error) {
_s := []interface{}{_param0, _param1}
for _, _x := range _param2 {
_s = append(_s, _x)
}
ret := _m.ctrl.Call(_m, "ListFeatures", _s...)
ret0, _ := ret[0].(routeguide.RouteGuide_ListFeaturesClient)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuideClientRecorder) ListFeatures(arg0, arg1 interface{}, arg2 ...interface{}) *gomock.Call {
_s := append([]interface{}{arg0, arg1}, arg2...)
return _mr.mock.ctrl.RecordCall(_mr.mock, "ListFeatures", _s...)
}
func (_m *MockRouteGuideClient) RecordRoute(_param0 context.Context, _param1 ...grpc.CallOption) (routeguide.RouteGuide_RecordRouteClient, error) {
_s := []interface{}{_param0}
for _, _x := range _param1 {
_s = append(_s, _x)
}
ret := _m.ctrl.Call(_m, "RecordRoute", _s...)
ret0, _ := ret[0].(routeguide.RouteGuide_RecordRouteClient)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuideClientRecorder) RecordRoute(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
_s := append([]interface{}{arg0}, arg1...)
return _mr.mock.ctrl.RecordCall(_mr.mock, "RecordRoute", _s...)
}
func (_m *MockRouteGuideClient) RouteChat(_param0 context.Context, _param1 ...grpc.CallOption) (routeguide.RouteGuide_RouteChatClient, error) {
_s := []interface{}{_param0}
for _, _x := range _param1 {
_s = append(_s, _x)
}
ret := _m.ctrl.Call(_m, "RouteChat", _s...)
ret0, _ := ret[0].(routeguide.RouteGuide_RouteChatClient)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuideClientRecorder) RouteChat(arg0 interface{}, arg1 ...interface{}) *gomock.Call {
_s := append([]interface{}{arg0}, arg1...)
return _mr.mock.ctrl.RecordCall(_mr.mock, "RouteChat", _s...)
}
// Mock of RouteGuide_RouteChatClient interface
type MockRouteGuide_RouteChatClient struct {
ctrl *gomock.Controller
recorder *_MockRouteGuide_RouteChatClientRecorder
}
// Recorder for MockRouteGuide_RouteChatClient (not exported)
type _MockRouteGuide_RouteChatClientRecorder struct {
mock *MockRouteGuide_RouteChatClient
}
func NewMockRouteGuide_RouteChatClient(ctrl *gomock.Controller) *MockRouteGuide_RouteChatClient {
mock := &MockRouteGuide_RouteChatClient{ctrl: ctrl}
mock.recorder = &_MockRouteGuide_RouteChatClientRecorder{mock}
return mock
}
func (_m *MockRouteGuide_RouteChatClient) EXPECT() *_MockRouteGuide_RouteChatClientRecorder {
return _m.recorder
}
func (_m *MockRouteGuide_RouteChatClient) CloseSend() error {
ret := _m.ctrl.Call(_m, "CloseSend")
ret0, _ := ret[0].(error)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) CloseSend() *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "CloseSend")
}
func (_m *MockRouteGuide_RouteChatClient) Context() context.Context {
ret := _m.ctrl.Call(_m, "Context")
ret0, _ := ret[0].(context.Context)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) Context() *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "Context")
}
func (_m *MockRouteGuide_RouteChatClient) Header() (metadata.MD, error) {
ret := _m.ctrl.Call(_m, "Header")
ret0, _ := ret[0].(metadata.MD)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) Header() *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "Header")
}
func (_m *MockRouteGuide_RouteChatClient) Recv() (*routeguide.RouteNote, error) {
ret := _m.ctrl.Call(_m, "Recv")
ret0, _ := ret[0].(*routeguide.RouteNote)
ret1, _ := ret[1].(error)
return ret0, ret1
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) Recv() *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "Recv")
}
func (_m *MockRouteGuide_RouteChatClient) RecvMsg(_param0 interface{}) error {
ret := _m.ctrl.Call(_m, "RecvMsg", _param0)
ret0, _ := ret[0].(error)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) RecvMsg(arg0 interface{}) *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "RecvMsg", arg0)
}
func (_m *MockRouteGuide_RouteChatClient) Send(_param0 *routeguide.RouteNote) error {
ret := _m.ctrl.Call(_m, "Send", _param0)
ret0, _ := ret[0].(error)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) Send(arg0 interface{}) *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "Send", arg0)
}
func (_m *MockRouteGuide_RouteChatClient) SendMsg(_param0 interface{}) error {
ret := _m.ctrl.Call(_m, "SendMsg", _param0)
ret0, _ := ret[0].(error)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) SendMsg(arg0 interface{}) *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "SendMsg", arg0)
}
func (_m *MockRouteGuide_RouteChatClient) Trailer() metadata.MD {
ret := _m.ctrl.Call(_m, "Trailer")
ret0, _ := ret[0].(metadata.MD)
return ret0
}
func (_mr *_MockRouteGuide_RouteChatClientRecorder) Trailer() *gomock.Call {
return _mr.mock.ctrl.RecordCall(_mr.mock, "Trailer")
}

80
vendor/google.golang.org/grpc/examples/route_guide/mock_routeguide/rg_mock_test.go generated vendored Normal file
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/*
*
* Copyright 2017 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
package mock_routeguide_test
import (
"fmt"
"testing"
"github.com/golang/mock/gomock"
"github.com/golang/protobuf/proto"
"golang.org/x/net/context"
rgmock "google.golang.org/grpc/examples/route_guide/mock_routeguide"
rgpb "google.golang.org/grpc/examples/route_guide/routeguide"
)
var msg = &rgpb.RouteNote{
Location: &rgpb.Point{Latitude: 17, Longitude: 29},
Message: "Taxi-cab",
}
func TestRouteChat(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
// Create mock for the stream returned by RouteChat
stream := rgmock.NewMockRouteGuide_RouteChatClient(ctrl)
// set expectation on sending.
stream.EXPECT().Send(
gomock.Any(),
).Return(nil)
// Set expectation on receiving.
stream.EXPECT().Recv().Return(msg, nil)
stream.EXPECT().CloseSend().Return(nil)
// Create mock for the client interface.
rgclient := rgmock.NewMockRouteGuideClient(ctrl)
// Set expectation on RouteChat
rgclient.EXPECT().RouteChat(
gomock.Any(),
).Return(stream, nil)
if err := testRouteChat(rgclient); err != nil {
t.Fatalf("Test failed: %v", err)
}
}
func testRouteChat(client rgpb.RouteGuideClient) error {
stream, err := client.RouteChat(context.Background())
if err != nil {
return err
}
if err := stream.Send(msg); err != nil {
return err
}
if err := stream.CloseSend(); err != nil {
return err
}
got, err := stream.Recv()
if err != nil {
return err
}
if !proto.Equal(got, msg) {
return fmt.Errorf("stream.Recv() = %v, want %v", got, msg)
}
return nil
}

543
vendor/google.golang.org/grpc/examples/route_guide/routeguide/route_guide.pb.go generated vendored Normal file
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@ -0,0 +1,543 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: route_guide.proto
/*
Package routeguide is a generated protocol buffer package.
It is generated from these files:
route_guide.proto
It has these top-level messages:
Point
Rectangle
Feature
RouteNote
RouteSummary
*/
package routeguide
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
var _ = fmt.Errorf
var _ = math.Inf
// This is a compile-time assertion to ensure that this generated file
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
// Points are represented as latitude-longitude pairs in the E7 representation
// (degrees multiplied by 10**7 and rounded to the nearest integer).
// Latitudes should be in the range +/- 90 degrees and longitude should be in
// the range +/- 180 degrees (inclusive).
type Point struct {
Latitude int32 `protobuf:"varint,1,opt,name=latitude" json:"latitude,omitempty"`
Longitude int32 `protobuf:"varint,2,opt,name=longitude" json:"longitude,omitempty"`
}
func (m *Point) Reset() { *m = Point{} }
func (m *Point) String() string { return proto.CompactTextString(m) }
func (*Point) ProtoMessage() {}
func (*Point) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} }
func (m *Point) GetLatitude() int32 {
if m != nil {
return m.Latitude
}
return 0
}
func (m *Point) GetLongitude() int32 {
if m != nil {
return m.Longitude
}
return 0
}
// A latitude-longitude rectangle, represented as two diagonally opposite
// points "lo" and "hi".
type Rectangle struct {
// One corner of the rectangle.
Lo *Point `protobuf:"bytes,1,opt,name=lo" json:"lo,omitempty"`
// The other corner of the rectangle.
Hi *Point `protobuf:"bytes,2,opt,name=hi" json:"hi,omitempty"`
}
func (m *Rectangle) Reset() { *m = Rectangle{} }
func (m *Rectangle) String() string { return proto.CompactTextString(m) }
func (*Rectangle) ProtoMessage() {}
func (*Rectangle) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} }
func (m *Rectangle) GetLo() *Point {
if m != nil {
return m.Lo
}
return nil
}
func (m *Rectangle) GetHi() *Point {
if m != nil {
return m.Hi
}
return nil
}
// A feature names something at a given point.
//
// If a feature could not be named, the name is empty.
type Feature struct {
// The name of the feature.
Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
// The point where the feature is detected.
Location *Point `protobuf:"bytes,2,opt,name=location" json:"location,omitempty"`
}
func (m *Feature) Reset() { *m = Feature{} }
func (m *Feature) String() string { return proto.CompactTextString(m) }
func (*Feature) ProtoMessage() {}
func (*Feature) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} }
func (m *Feature) GetName() string {
if m != nil {
return m.Name
}
return ""
}
func (m *Feature) GetLocation() *Point {
if m != nil {
return m.Location
}
return nil
}
// A RouteNote is a message sent while at a given point.
type RouteNote struct {
// The location from which the message is sent.
Location *Point `protobuf:"bytes,1,opt,name=location" json:"location,omitempty"`
// The message to be sent.
Message string `protobuf:"bytes,2,opt,name=message" json:"message,omitempty"`
}
func (m *RouteNote) Reset() { *m = RouteNote{} }
func (m *RouteNote) String() string { return proto.CompactTextString(m) }
func (*RouteNote) ProtoMessage() {}
func (*RouteNote) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} }
func (m *RouteNote) GetLocation() *Point {
if m != nil {
return m.Location
}
return nil
}
func (m *RouteNote) GetMessage() string {
if m != nil {
return m.Message
}
return ""
}
// A RouteSummary is received in response to a RecordRoute rpc.
//
// It contains the number of individual points received, the number of
// detected features, and the total distance covered as the cumulative sum of
// the distance between each point.
type RouteSummary struct {
// The number of points received.
PointCount int32 `protobuf:"varint,1,opt,name=point_count,json=pointCount" json:"point_count,omitempty"`
// The number of known features passed while traversing the route.
FeatureCount int32 `protobuf:"varint,2,opt,name=feature_count,json=featureCount" json:"feature_count,omitempty"`
// The distance covered in metres.
Distance int32 `protobuf:"varint,3,opt,name=distance" json:"distance,omitempty"`
// The duration of the traversal in seconds.
ElapsedTime int32 `protobuf:"varint,4,opt,name=elapsed_time,json=elapsedTime" json:"elapsed_time,omitempty"`
}
func (m *RouteSummary) Reset() { *m = RouteSummary{} }
func (m *RouteSummary) String() string { return proto.CompactTextString(m) }
func (*RouteSummary) ProtoMessage() {}
func (*RouteSummary) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} }
func (m *RouteSummary) GetPointCount() int32 {
if m != nil {
return m.PointCount
}
return 0
}
func (m *RouteSummary) GetFeatureCount() int32 {
if m != nil {
return m.FeatureCount
}
return 0
}
func (m *RouteSummary) GetDistance() int32 {
if m != nil {
return m.Distance
}
return 0
}
func (m *RouteSummary) GetElapsedTime() int32 {
if m != nil {
return m.ElapsedTime
}
return 0
}
func init() {
proto.RegisterType((*Point)(nil), "routeguide.Point")
proto.RegisterType((*Rectangle)(nil), "routeguide.Rectangle")
proto.RegisterType((*Feature)(nil), "routeguide.Feature")
proto.RegisterType((*RouteNote)(nil), "routeguide.RouteNote")
proto.RegisterType((*RouteSummary)(nil), "routeguide.RouteSummary")
}
// Reference imports to suppress errors if they are not otherwise used.
var _ context.Context
var _ grpc.ClientConn
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
const _ = grpc.SupportPackageIsVersion4
// Client API for RouteGuide service
type RouteGuideClient interface {
// A simple RPC.
//
// Obtains the feature at a given position.
//
// A feature with an empty name is returned if there's no feature at the given
// position.
GetFeature(ctx context.Context, in *Point, opts ...grpc.CallOption) (*Feature, error)
// A server-to-client streaming RPC.
//
// Obtains the Features available within the given Rectangle. Results are
// streamed rather than returned at once (e.g. in a response message with a
// repeated field), as the rectangle may cover a large area and contain a
// huge number of features.
ListFeatures(ctx context.Context, in *Rectangle, opts ...grpc.CallOption) (RouteGuide_ListFeaturesClient, error)
// A client-to-server streaming RPC.
//
// Accepts a stream of Points on a route being traversed, returning a
// RouteSummary when traversal is completed.
RecordRoute(ctx context.Context, opts ...grpc.CallOption) (RouteGuide_RecordRouteClient, error)
// A Bidirectional streaming RPC.
//
// Accepts a stream of RouteNotes sent while a route is being traversed,
// while receiving other RouteNotes (e.g. from other users).
RouteChat(ctx context.Context, opts ...grpc.CallOption) (RouteGuide_RouteChatClient, error)
}
type routeGuideClient struct {
cc *grpc.ClientConn
}
func NewRouteGuideClient(cc *grpc.ClientConn) RouteGuideClient {
return &routeGuideClient{cc}
}
func (c *routeGuideClient) GetFeature(ctx context.Context, in *Point, opts ...grpc.CallOption) (*Feature, error) {
out := new(Feature)
err := grpc.Invoke(ctx, "/routeguide.RouteGuide/GetFeature", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *routeGuideClient) ListFeatures(ctx context.Context, in *Rectangle, opts ...grpc.CallOption) (RouteGuide_ListFeaturesClient, error) {
stream, err := grpc.NewClientStream(ctx, &_RouteGuide_serviceDesc.Streams[0], c.cc, "/routeguide.RouteGuide/ListFeatures", opts...)
if err != nil {
return nil, err
}
x := &routeGuideListFeaturesClient{stream}
if err := x.ClientStream.SendMsg(in); err != nil {
return nil, err
}
if err := x.ClientStream.CloseSend(); err != nil {
return nil, err
}
return x, nil
}
type RouteGuide_ListFeaturesClient interface {
Recv() (*Feature, error)
grpc.ClientStream
}
type routeGuideListFeaturesClient struct {
grpc.ClientStream
}
func (x *routeGuideListFeaturesClient) Recv() (*Feature, error) {
m := new(Feature)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
func (c *routeGuideClient) RecordRoute(ctx context.Context, opts ...grpc.CallOption) (RouteGuide_RecordRouteClient, error) {
stream, err := grpc.NewClientStream(ctx, &_RouteGuide_serviceDesc.Streams[1], c.cc, "/routeguide.RouteGuide/RecordRoute", opts...)
if err != nil {
return nil, err
}
x := &routeGuideRecordRouteClient{stream}
return x, nil
}
type RouteGuide_RecordRouteClient interface {
Send(*Point) error
CloseAndRecv() (*RouteSummary, error)
grpc.ClientStream
}
type routeGuideRecordRouteClient struct {
grpc.ClientStream
}
func (x *routeGuideRecordRouteClient) Send(m *Point) error {
return x.ClientStream.SendMsg(m)
}
func (x *routeGuideRecordRouteClient) CloseAndRecv() (*RouteSummary, error) {
if err := x.ClientStream.CloseSend(); err != nil {
return nil, err
}
m := new(RouteSummary)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
func (c *routeGuideClient) RouteChat(ctx context.Context, opts ...grpc.CallOption) (RouteGuide_RouteChatClient, error) {
stream, err := grpc.NewClientStream(ctx, &_RouteGuide_serviceDesc.Streams[2], c.cc, "/routeguide.RouteGuide/RouteChat", opts...)
if err != nil {
return nil, err
}
x := &routeGuideRouteChatClient{stream}
return x, nil
}
type RouteGuide_RouteChatClient interface {
Send(*RouteNote) error
Recv() (*RouteNote, error)
grpc.ClientStream
}
type routeGuideRouteChatClient struct {
grpc.ClientStream
}
func (x *routeGuideRouteChatClient) Send(m *RouteNote) error {
return x.ClientStream.SendMsg(m)
}
func (x *routeGuideRouteChatClient) Recv() (*RouteNote, error) {
m := new(RouteNote)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// Server API for RouteGuide service
type RouteGuideServer interface {
// A simple RPC.
//
// Obtains the feature at a given position.
//
// A feature with an empty name is returned if there's no feature at the given
// position.
GetFeature(context.Context, *Point) (*Feature, error)
// A server-to-client streaming RPC.
//
// Obtains the Features available within the given Rectangle. Results are
// streamed rather than returned at once (e.g. in a response message with a
// repeated field), as the rectangle may cover a large area and contain a
// huge number of features.
ListFeatures(*Rectangle, RouteGuide_ListFeaturesServer) error
// A client-to-server streaming RPC.
//
// Accepts a stream of Points on a route being traversed, returning a
// RouteSummary when traversal is completed.
RecordRoute(RouteGuide_RecordRouteServer) error
// A Bidirectional streaming RPC.
//
// Accepts a stream of RouteNotes sent while a route is being traversed,
// while receiving other RouteNotes (e.g. from other users).
RouteChat(RouteGuide_RouteChatServer) error
}
func RegisterRouteGuideServer(s *grpc.Server, srv RouteGuideServer) {
s.RegisterService(&_RouteGuide_serviceDesc, srv)
}
func _RouteGuide_GetFeature_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(Point)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(RouteGuideServer).GetFeature(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/routeguide.RouteGuide/GetFeature",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(RouteGuideServer).GetFeature(ctx, req.(*Point))
}
return interceptor(ctx, in, info, handler)
}
func _RouteGuide_ListFeatures_Handler(srv interface{}, stream grpc.ServerStream) error {
m := new(Rectangle)
if err := stream.RecvMsg(m); err != nil {
return err
}
return srv.(RouteGuideServer).ListFeatures(m, &routeGuideListFeaturesServer{stream})
}
type RouteGuide_ListFeaturesServer interface {
Send(*Feature) error
grpc.ServerStream
}
type routeGuideListFeaturesServer struct {
grpc.ServerStream
}
func (x *routeGuideListFeaturesServer) Send(m *Feature) error {
return x.ServerStream.SendMsg(m)
}
func _RouteGuide_RecordRoute_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(RouteGuideServer).RecordRoute(&routeGuideRecordRouteServer{stream})
}
type RouteGuide_RecordRouteServer interface {
SendAndClose(*RouteSummary) error
Recv() (*Point, error)
grpc.ServerStream
}
type routeGuideRecordRouteServer struct {
grpc.ServerStream
}
func (x *routeGuideRecordRouteServer) SendAndClose(m *RouteSummary) error {
return x.ServerStream.SendMsg(m)
}
func (x *routeGuideRecordRouteServer) Recv() (*Point, error) {
m := new(Point)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
func _RouteGuide_RouteChat_Handler(srv interface{}, stream grpc.ServerStream) error {
return srv.(RouteGuideServer).RouteChat(&routeGuideRouteChatServer{stream})
}
type RouteGuide_RouteChatServer interface {
Send(*RouteNote) error
Recv() (*RouteNote, error)
grpc.ServerStream
}
type routeGuideRouteChatServer struct {
grpc.ServerStream
}
func (x *routeGuideRouteChatServer) Send(m *RouteNote) error {
return x.ServerStream.SendMsg(m)
}
func (x *routeGuideRouteChatServer) Recv() (*RouteNote, error) {
m := new(RouteNote)
if err := x.ServerStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
var _RouteGuide_serviceDesc = grpc.ServiceDesc{
ServiceName: "routeguide.RouteGuide",
HandlerType: (*RouteGuideServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "GetFeature",
Handler: _RouteGuide_GetFeature_Handler,
},
},
Streams: []grpc.StreamDesc{
{
StreamName: "ListFeatures",
Handler: _RouteGuide_ListFeatures_Handler,
ServerStreams: true,
},
{
StreamName: "RecordRoute",
Handler: _RouteGuide_RecordRoute_Handler,
ClientStreams: true,
},
{
StreamName: "RouteChat",
Handler: _RouteGuide_RouteChat_Handler,
ServerStreams: true,
ClientStreams: true,
},
},
Metadata: "route_guide.proto",
}
func init() { proto.RegisterFile("route_guide.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
// 404 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x53, 0xdd, 0xca, 0xd3, 0x40,
0x10, 0xfd, 0x36, 0x7e, 0x9f, 0x6d, 0x26, 0x11, 0xe9, 0x88, 0x10, 0xa2, 0xa0, 0x8d, 0x37, 0xbd,
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}

110
vendor/google.golang.org/grpc/examples/route_guide/routeguide/route_guide.proto generated vendored Normal file
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@ -0,0 +1,110 @@
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// 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.
syntax = "proto3";
option java_multiple_files = true;
option java_package = "io.grpc.examples.routeguide";
option java_outer_classname = "RouteGuideProto";
package routeguide;
// Interface exported by the server.
service RouteGuide {
// A simple RPC.
//
// Obtains the feature at a given position.
//
// A feature with an empty name is returned if there's no feature at the given
// position.
rpc GetFeature(Point) returns (Feature) {}
// A server-to-client streaming RPC.
//
// Obtains the Features available within the given Rectangle. Results are
// streamed rather than returned at once (e.g. in a response message with a
// repeated field), as the rectangle may cover a large area and contain a
// huge number of features.
rpc ListFeatures(Rectangle) returns (stream Feature) {}
// A client-to-server streaming RPC.
//
// Accepts a stream of Points on a route being traversed, returning a
// RouteSummary when traversal is completed.
rpc RecordRoute(stream Point) returns (RouteSummary) {}
// A Bidirectional streaming RPC.
//
// Accepts a stream of RouteNotes sent while a route is being traversed,
// while receiving other RouteNotes (e.g. from other users).
rpc RouteChat(stream RouteNote) returns (stream RouteNote) {}
}
// Points are represented as latitude-longitude pairs in the E7 representation
// (degrees multiplied by 10**7 and rounded to the nearest integer).
// Latitudes should be in the range +/- 90 degrees and longitude should be in
// the range +/- 180 degrees (inclusive).
message Point {
int32 latitude = 1;
int32 longitude = 2;
}
// A latitude-longitude rectangle, represented as two diagonally opposite
// points "lo" and "hi".
message Rectangle {
// One corner of the rectangle.
Point lo = 1;
// The other corner of the rectangle.
Point hi = 2;
}
// A feature names something at a given point.
//
// If a feature could not be named, the name is empty.
message Feature {
// The name of the feature.
string name = 1;
// The point where the feature is detected.
Point location = 2;
}
// A RouteNote is a message sent while at a given point.
message RouteNote {
// The location from which the message is sent.
Point location = 1;
// The message to be sent.
string message = 2;
}
// A RouteSummary is received in response to a RecordRoute rpc.
//
// It contains the number of individual points received, the number of
// detected features, and the total distance covered as the cumulative sum of
// the distance between each point.
message RouteSummary {
// The number of points received.
int32 point_count = 1;
// The number of known features passed while traversing the route.
int32 feature_count = 2;
// The distance covered in metres.
int32 distance = 3;
// The duration of the traversal in seconds.
int32 elapsed_time = 4;
}

240
vendor/google.golang.org/grpc/examples/route_guide/server/server.go generated vendored Normal file
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@ -0,0 +1,240 @@
/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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.
*
*/
//go:generate protoc -I ../routeguide --go_out=plugins=grpc:../routeguide ../routeguide/route_guide.proto
// Package main implements a simple gRPC server that demonstrates how to use gRPC-Go libraries
// to perform unary, client streaming, server streaming and full duplex RPCs.
//
// It implements the route guide service whose definition can be found in routeguide/route_guide.proto.
package main
import (
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"math"
"net"
"sync"
"time"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/testdata"
"github.com/golang/protobuf/proto"
pb "google.golang.org/grpc/examples/route_guide/routeguide"
)
var (
tls = flag.Bool("tls", false, "Connection uses TLS if true, else plain TCP")
certFile = flag.String("cert_file", "", "The TLS cert file")
keyFile = flag.String("key_file", "", "The TLS key file")
jsonDBFile = flag.String("json_db_file", "testdata/route_guide_db.json", "A json file containing a list of features")
port = flag.Int("port", 10000, "The server port")
)
type routeGuideServer struct {
savedFeatures []*pb.Feature // read-only after initialized
mu sync.Mutex // protects routeNotes
routeNotes map[string][]*pb.RouteNote
}
// GetFeature returns the feature at the given point.
func (s *routeGuideServer) GetFeature(ctx context.Context, point *pb.Point) (*pb.Feature, error) {
for _, feature := range s.savedFeatures {
if proto.Equal(feature.Location, point) {
return feature, nil
}
}
// No feature was found, return an unnamed feature
return &pb.Feature{Location: point}, nil
}
// ListFeatures lists all features contained within the given bounding Rectangle.
func (s *routeGuideServer) ListFeatures(rect *pb.Rectangle, stream pb.RouteGuide_ListFeaturesServer) error {
for _, feature := range s.savedFeatures {
if inRange(feature.Location, rect) {
if err := stream.Send(feature); err != nil {
return err
}
}
}
return nil
}
// RecordRoute records a route composited of a sequence of points.
//
// It gets a stream of points, and responds with statistics about the "trip":
// number of points, number of known features visited, total distance traveled, and
// total time spent.
func (s *routeGuideServer) RecordRoute(stream pb.RouteGuide_RecordRouteServer) error {
var pointCount, featureCount, distance int32
var lastPoint *pb.Point
startTime := time.Now()
for {
point, err := stream.Recv()
if err == io.EOF {
endTime := time.Now()
return stream.SendAndClose(&pb.RouteSummary{
PointCount: pointCount,
FeatureCount: featureCount,
Distance: distance,
ElapsedTime: int32(endTime.Sub(startTime).Seconds()),
})
}
if err != nil {
return err
}
pointCount++
for _, feature := range s.savedFeatures {
if proto.Equal(feature.Location, point) {
featureCount++
}
}
if lastPoint != nil {
distance += calcDistance(lastPoint, point)
}
lastPoint = point
}
}
// RouteChat receives a stream of message/location pairs, and responds with a stream of all
// previous messages at each of those locations.
func (s *routeGuideServer) RouteChat(stream pb.RouteGuide_RouteChatServer) error {
for {
in, err := stream.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
key := serialize(in.Location)
s.mu.Lock()
s.routeNotes[key] = append(s.routeNotes[key], in)
// Note: this copy prevents blocking other clients while serving this one.
// We don't need to do a deep copy, because elements in the slice are
// insert-only and never modified.
rn := make([]*pb.RouteNote, len(s.routeNotes[key]))
copy(rn, s.routeNotes[key])
s.mu.Unlock()
for _, note := range rn {
if err := stream.Send(note); err != nil {
return err
}
}
}
}
// loadFeatures loads features from a JSON file.
func (s *routeGuideServer) loadFeatures(filePath string) {
file, err := ioutil.ReadFile(filePath)
if err != nil {
log.Fatalf("Failed to load default features: %v", err)
}
if err := json.Unmarshal(file, &s.savedFeatures); err != nil {
log.Fatalf("Failed to load default features: %v", err)
}
}
func toRadians(num float64) float64 {
return num * math.Pi / float64(180)
}
// calcDistance calculates the distance between two points using the "haversine" formula.
// This code was taken from http://www.movable-type.co.uk/scripts/latlong.html.
func calcDistance(p1 *pb.Point, p2 *pb.Point) int32 {
const CordFactor float64 = 1e7
const R float64 = float64(6371000) // metres
lat1 := float64(p1.Latitude) / CordFactor
lat2 := float64(p2.Latitude) / CordFactor
lng1 := float64(p1.Longitude) / CordFactor
lng2 := float64(p2.Longitude) / CordFactor
φ1 := toRadians(lat1)
φ2 := toRadians(lat2)
Δφ := toRadians(lat2 - lat1)
Δλ := toRadians(lng2 - lng1)
a := math.Sin(Δφ/2)*math.Sin(Δφ/2) +
math.Cos(φ1)*math.Cos(φ2)*
math.Sin(Δλ/2)*math.Sin(Δλ/2)
c := 2 * math.Atan2(math.Sqrt(a), math.Sqrt(1-a))
distance := R * c
return int32(distance)
}
func inRange(point *pb.Point, rect *pb.Rectangle) bool {
left := math.Min(float64(rect.Lo.Longitude), float64(rect.Hi.Longitude))
right := math.Max(float64(rect.Lo.Longitude), float64(rect.Hi.Longitude))
top := math.Max(float64(rect.Lo.Latitude), float64(rect.Hi.Latitude))
bottom := math.Min(float64(rect.Lo.Latitude), float64(rect.Hi.Latitude))
if float64(point.Longitude) >= left &&
float64(point.Longitude) <= right &&
float64(point.Latitude) >= bottom &&
float64(point.Latitude) <= top {
return true
}
return false
}
func serialize(point *pb.Point) string {
return fmt.Sprintf("%d %d", point.Latitude, point.Longitude)
}
func newServer() *routeGuideServer {
s := &routeGuideServer{routeNotes: make(map[string][]*pb.RouteNote)}
s.loadFeatures(*jsonDBFile)
return s
}
func main() {
flag.Parse()
lis, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", *port))
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
var opts []grpc.ServerOption
if *tls {
if *certFile == "" {
*certFile = testdata.Path("server1.pem")
}
if *keyFile == "" {
*keyFile = testdata.Path("server1.key")
}
creds, err := credentials.NewServerTLSFromFile(*certFile, *keyFile)
if err != nil {
log.Fatalf("Failed to generate credentials %v", err)
}
opts = []grpc.ServerOption{grpc.Creds(creds)}
}
grpcServer := grpc.NewServer(opts...)
pb.RegisterRouteGuideServer(grpcServer, newServer())
grpcServer.Serve(lis)
}

601
vendor/google.golang.org/grpc/examples/route_guide/testdata/route_guide_db.json generated vendored Normal file
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[{
"location": {
"latitude": 407838351,
"longitude": -746143763
},
"name": "Patriots Path, Mendham, NJ 07945, USA"
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"name": "3387 Richmond Terrace, Staten Island, NY 10303, USA"
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"longitude": -744597778
},
"name": "261 Van Sickle Road, Goshen, NY 10924, USA"
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}, {
"location": {
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},
"name": "3 Hasta Way, Newton, NJ 07860, USA"
}]