Replace prototool with buf

.circleci/config.yml

@@ -8,7 +8,8 @@ executors:
           username: mydockerhub-user
           password: $DOCKERHUB_PASSWORD
     environment:
-      PROTOTOOL_VER: 1.10.0
+      BUF_VER: 0.36.0
+      PROTOC_VER: 3.14.0
     working_directory: /go/src/github.com/improbable-eng/grpc-web
 
 jobs:
@@ -23,7 +24,8 @@ jobs:
     steps:
       - checkout
       - run: sudo apt-get install unzip
-      - run: . ./install-prototool.sh
+      - run: . ./install-buf.sh
+      - run: . ./install-protoc.sh
       - run: echo 'export GOBIN=/go/bin' >> $BASH_ENV
       - run: go get -u golang.org/x/tools/cmd/goimports
       - run: go get -u github.com/robertkrimen/godocdown/godocdown
@@ -114,4 +116,4 @@ workflows:
                 - BROWSER=ie11_win DISABLE_WEBSOCKET_TESTS=true
                 - BROWSER=nodejs
           requires:
-            - initial-unit-test-lint-prebuild
+            - initial-unit-test-lint-prebuild

CONTRIBUTING.md

@@ -13,7 +13,7 @@ export GOPATH=$(pwd)
 
 # Checkout project sources into your new go workspace
 go get -u github.com/improbable-eng/grpc-web/go
-cd $GOPATH/src/github.com/improbable-eng/grpc-web 
+cd $GOPATH/src/github.com/improbable-eng/grpc-web
 
 # Install go dependencies
 dep ensure
@@ -23,9 +23,9 @@ nvm use
 npm install
 ```
 
-Note you will also need to [install prototool](https://github.com/uber/prototool/blob/dev/docs/install.md) and add it to your `PATH` environment variable if you wish to re-generate the integration test proto files.
+Note you will also need to [install buf](https://github.com/bufbuild/buf) and add it to your `PATH` environment variable if you wish to re-generate the integration test proto files.
 
-## Testing Prerequisites 
+## Testing Prerequisites
 Before you run the tests for the first time, please follow these steps:
 
 ### Installing the Local Certificate
@@ -38,7 +38,7 @@ In order to run the Karma (Integration) tests, you will need to add the certific
 4. Select `misc/localhost.crt`
 5. Double click on the new `GRPC Web example dev server` certificate
 6. Expand the `Trust' section
-7. Change the `When using this certificate` option to `Always Trust` 
+7. Change the `When using this certificate` option to `Always Trust`
 8. Close the certificate details pop-up.
 
 Repeat the above process for `misc/localhostCA.pem`.
@@ -75,4 +75,4 @@ This is your prompt to open a web browser on https://localhost:9876 at which poi
 2. Update `CHANGELOG.md` by comparing commits to master since the last Github Release
 3. Raise a pull request for your changes, have it reviewed and landed into master.
 4. Switch your local checkout back to the master branch, pull your merged changes and run `./publish-release.sh`.
-5. Create the ARM binaries and attach them to the Github release.
+5. Create the ARM binaries and attach them to the Github release.

buf.yaml

@@ -0,0 +1,25 @@
+version: v1beta1
+build:
+  roots:
+    - integration_test/proto
+lint:
+  use:
+    - DEFAULT
+  ignore_only:
+    ENUM_VALUE_PREFIX:
+      - improbable/grpcweb/test/test.proto
+    ENUM_ZERO_VALUE_SUFFIX:
+      - improbable/grpcweb/test/test.proto
+    FIELD_LOWER_SNAKE_CASE:
+      - improbable/grpcweb/test/test.proto
+    PACKAGE_VERSION_SUFFIX:
+      - improbable/grpcweb/test/test.proto
+    RPC_REQUEST_RESPONSE_UNIQUE:
+      - improbable/grpcweb/test/test.proto
+    RPC_REQUEST_STANDARD_NAME:
+      - improbable/grpcweb/test/test.proto
+    RPC_RESPONSE_STANDARD_NAME:
+      - improbable/grpcweb/test/test.proto
+breaking:
+  use:
+    - FILE

install-buf.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Installs buf; used for generating and linting protofiles.
+# This script is intended to be run by CI
+
+set -ex
+
+if [[ -z "$BUF_VER" ]]; then
+  echo "BUF_VER environment variable not set"
+  exit 1
+fi
+
+curl -sSL \
+  https://github.com/bufbuild/buf/releases/download/v${BUF_VER}/buf-$(uname -s)-$(uname -m) \
+  -o ./buf && \
+  chmod +x ./buf
+
+echo 'export PATH=$PATH:$PWD' >> $BASH_ENV

install-protoc.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Installs protoc; used for generating JS protobuf stubs.
+# This script is intended to be run by CI
+
+set -ex
+
+if [[ -z "$PROTOC_VER" ]]; then
+  echo "PROTOC_VER environment variable not set"
+  exit 1
+fi
+
+curl -sSL \
+  https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VER}/protoc-${PROTOC_VER}-linux-$(uname -m).zip \
+  -o protoc.zip
+rm -rf protoc
+mkdir -p protoc
+unzip protoc.zip -d protoc
+rm protoc.zip
+chmod +x ./protoc/bin/protoc
+
+echo 'export PATH=$PATH:$PWD/protoc/bin' >> $BASH_ENV