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Merge pull request #5896 from schjonhaug/instructions-for-creating-swift-protoc-definitions

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Added instructions on how to build proto definitions for Swift
This commit is contained in:
Oliver Gugger
2021-11-02 15:02:39 +01:00
committed by GitHub
parent 97786c72fc 9ea9caea1a
commit 919b31a67b
1 changed files with 41 additions and 4 deletions
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mobile/README.md
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@ -43,10 +43,47 @@ In order to call the methods in the generated library, the serialized proto for
the given RPC call must be provided. Similarly, the response will be a the given RPC call must be provided. Similarly, the response will be a
serialized proto. serialized proto.
In order to generate protobuf definitions for your language of choice, add the ##### iOS
proto plugin to the `protoc` invocations found in
[`gen_protos.sh`](../lnrpc/gen_protos.sh). For instance to generate protos for In order to generate protobuf definitions for iOS, add `--swift_out=.` to the
Swift, add `--swift_out=.` and run `make rpc`. first `protoc` invocation found in [`gen_protos.sh`](../lnrpc/gen_protos.sh).
Then, some changes to [Dockerfile]((../lnrpc/Dockerfile)) need to be done in
order to use the [Swift protobuf](https://github.com/apple/swift-protobuf)
plugin with protoc:
1. Replace the base image with `FROM swift:focal` so that Swift can be used.
2. `clang-format='1:7.0*'` is unavailable in Ubuntu Focal. Change that to
`clang-format='1:10.0*`.
3. On the next line, install Go and set the environment variables by adding the
following commands:
```
RUN apt-get install -y wget \
&& wget -c https://golang.org/dl/go1.17.2.linux-amd64.tar.gz -O - \
| tar -xz -C /usr/local
ENV GOPATH=/go
ENV PATH=$PATH:/usr/local/go/bin:/go/bin
```
4. At the end of the file, just above `CMD`, add the following `RUN` command.
This will download and compile the latest tagged release of Swift protobuf.
```
RUN git clone https://github.com/apple/swift-protobuf.git \
&& cd swift-protobuf \
&& git checkout $(git describe --tags --abbrev=0) \
&& swift build -c release \
&& mv .build/release/protoc-gen-swift /bin
```
Finally, run `make rpc`.
##### Android
In order to generate protobuf definitions for Android, add `--java_out=.`
to the first `protoc` invocation found in
[`gen_protos.sh`](../lnrpc/gen_protos.sh). Then, run `make rpc`.
### Options ### Options
Similar to lnd, subservers can be conditionally compiled with the build by Similar to lnd, subservers can be conditionally compiled with the build by