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[c# grpc] Skip compilation for --structs=false
* The MSBuild codegen targets now detect --structs=false and skip automatic compilation of the non-existent `_types.cs` files. * Added a gRPC example that show how to use a shared type assembly between a client and service.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| # Using a shared types assembly | ||
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| Sometimes you want to compile the types from a .bond file separately from | ||
| the gRPC services and clients. This example shows how to split the types | ||
| into their own assembly. | ||
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| The [`gbc`](https://microsoft.github.io/bond/manual/compiler.html) options | ||
| `--structs` and `--grpc` can be used to control whether codegen is performed | ||
| for structs and services. | ||
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| In the `types` directory, codegen is performed without the `--grpc` switch, | ||
| so just types are generated and compiled. | ||
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| In the `client` and `server` directories, however, codegen is performed with | ||
| the `--grpc` switch. Also, `--structs=false` is passed to disable the | ||
| default behavior of generating C# code for the types. If `--structs=false` | ||
| were not specified, there would be duplicate types in different assemblies, | ||
| resulting in a conflict that would need to be resolved via | ||
| [`extern alias`](https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/extern-alias). | ||
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| The `client` directory shows how to pass `--gprc` via per-item metadata with | ||
| `%(BondCodegen.Options)`, while the `server` directory shows how to do this | ||
| via the global `$(BondOptions)` property. |
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examples/cs/grpc/shared-types-assembly/client/StaClient.cs
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| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
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| namespace Examples.SharedTypes | ||
| { | ||
| using System; | ||
| using Grpc.Core; | ||
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| public static class Client | ||
| { | ||
| const string Address = "127.0.0.1"; | ||
| const int Port = 50051; | ||
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| public static void Main() | ||
| { | ||
| var channel = new Channel(Address, Port, ChannelCredentials.Insecure); | ||
| var client = new Calc.CalcClient(channel); | ||
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| var request = new Request | ||
| { | ||
| Num1 = 40, | ||
| Num2 = 2 | ||
| }; | ||
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| var response = client.AddAsync(request).GetAwaiter().GetResult(); | ||
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| Console.WriteLine($"Addition result: {response.Payload.Deserialize().Result}"); | ||
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| channel.ShutdownAsync().GetAwaiter().GetResult(); | ||
| } | ||
| } | ||
| } |
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