Replace gogo protobuf with google's protobuf v2 compiler (#317)

**What changed?**

gogo/protobuf has been replaced with Google's official go compiler.

I also changed our code generation to use buf as it was slightly easier to manage plugin versions, though I may revert that.

**Why?**

gogo/protobuf has been deprecated for some time and the community is moving on, building new tools (like vtproto) atop google's v2 compiler.

**Breaking changes**

- `*time.Time` in proto structs will now be [timestamppb.Timestamp](https://pkg.go.dev/google.golang.org/protobuf@v1.31.0/types/known/timestamppb#section-documentation)
- `*time.Duration` will now be [durationpb.Duration](https://pkg.go.dev/google.golang.org/protobuf/types/known/durationpb)
- V2-generated structs embed locks, so you cannot dereference them willy-nilly. `go vet` will scream at you about this
- Proto enums will, when formatted to JSON, now be in `SCREAMING_SNAKE_CASE` rather than `PascalCase`. We decided (in discussion with the SDK team) that now was as good a time as any to rip the bandage off

.buildkite/Dockerfile

@@ -1,2 +1,2 @@
-FROM temporalio/base-ci-builder:1.5.0
-WORKDIR /temporal
+FROM temporalio/base-ci-builder:1.10.3
+WORKDIR /temporal

.gitignore

@@ -1,3 +1,4 @@
 /.idea
 /.gen
-/.vscode
+/.vscode
+/.stamp

Makefile

@@ -16,6 +16,7 @@ endif
 
 GOBIN := $(if $(shell go env GOBIN),$(shell go env GOBIN),$(GOPATH)/bin)
 PATH := $(GOBIN):$(PATH)
+STAMPDIR := .stamp
 
 COLOR := "\e[1;36m%s\e[0m\n"
 
@@ -34,55 +35,57 @@ PROTO_FILES = $(shell find temporal -name "*.proto")
 PROTO_DIRS = $(sort $(dir $(PROTO_FILES)))
 PROTO_OUT := .gen
 PROTO_IMPORTS = \
-	-I=$(PROTO_ROOT) \
-	-I=$(shell go list -modfile build/go.mod -m -f '{{.Dir}}' github.com/temporalio/gogo-protobuf)/protobuf \
-	-I=$(shell go list -modfile build/go.mod -m -f '{{.Dir}}' github.com/grpc-ecosystem/grpc-gateway)/third_party/googleapis
+	-I=$(PROTO_ROOT)
+PROTO_PATHS = paths=source_relative:$(PROTO_OUT)
 
 $(PROTO_OUT):
 	mkdir $(PROTO_OUT)
 
 ##### Compile proto files for go #####
-grpc: buf-lint api-linter buf-breaking gogo-grpc fix-path
+grpc: buf-lint api-linter buf-breaking clean go-grpc fix-path
 
-gogo-grpc: clean $(PROTO_OUT)
-	printf $(COLOR) "Compile for gogo-gRPC..."
+go-grpc: clean $(PROTO_OUT)
+	printf $(COLOR) "Compile for go-gRPC..."
 	$(foreach PROTO_DIR,$(PROTO_DIRS),\
 		protoc --fatal_warnings $(PROTO_IMPORTS) \
-			--gogoslick_out=Mgoogle/protobuf/any.proto=github.com/gogo/protobuf/types,Mgoogle/protobuf/wrappers.proto=github.com/gogo/protobuf/types,Mgoogle/protobuf/duration.proto=github.com/gogo/protobuf/types,Mgoogle/protobuf/descriptor.proto=github.com/golang/protobuf/protoc-gen-go/descriptor,Mgoogle/protobuf/timestamp.proto=github.com/gogo/protobuf/types,plugins=grpc,paths=source_relative:$(PROTO_OUT) \
-			--grpc-gateway_out=allow_patch_feature=false,paths=source_relative:$(PROTO_OUT) \
+		 	--go_out=$(PROTO_PATHS) \
+            --grpc-gateway_out=allow_patch_feature=false,$(PROTO_PATHS)\
 			--doc_out=html,index.html,source_relative:$(PROTO_OUT) \
 		$(PROTO_DIR)*.proto;)
 
 fix-path:
 	mv -f $(PROTO_OUT)/temporal/api/* $(PROTO_OUT) && rm -rf $(PROTO_OUT)/temporal
 
 ##### Plugins & tools #####
-grpc-install: gogo-protobuf-install
-	printf $(COLOR) "Install/update gRPC plugins..."
-	go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
-	go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@latest
-
-gogo-protobuf-install: go-protobuf-install
-	go install -modfile build/go.mod github.com/temporalio/gogo-protobuf/protoc-gen-gogoslick
-	go install -modfile build/go.mod github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
-
-go-protobuf-install:
-	go install github.com/golang/protobuf/protoc-gen-go@v1.5.2
+grpc-install:
+	@printf $(COLOR) "Install/update protoc and plugins..."
+	@go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
+	@go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
+	@go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway@latest
+	@go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@latest
 
 api-linter-install:
 	printf $(COLOR) "Install/update api-linter..."
 	go install github.com/googleapis/api-linter/cmd/api-linter@v1.32.3
 
 buf-install:
 	printf $(COLOR) "Install/update buf..."
-	go install github.com/bufbuild/buf/cmd/buf@v1.6.0
+	go install github.com/bufbuild/buf/cmd/buf@v1.27.0
 
 ##### Linters #####
 api-linter:
 	printf $(COLOR) "Run api-linter..."
 	$(call silent_exec, api-linter --set-exit-status $(PROTO_IMPORTS) --config $(PROTO_ROOT)/api-linter.yaml $(PROTO_FILES))
 
-buf-lint:
+$(STAMPDIR):
+	mkdir $@
+
+$(STAMPDIR)/buf-mod-prune: $(STAMPDIR) buf.yaml
+	printf $(COLOR) "Pruning buf module"
+	buf mod prune
+	touch $@
+
+buf-lint: $(STAMPDIR)/buf-mod-prune
 	printf $(COLOR) "Run buf linter..."
 	(cd $(PROTO_ROOT) && buf lint)
 
@@ -93,4 +96,4 @@ buf-breaking:
 ##### Clean #####
 clean:
 	printf $(COLOR) "Delete generated go files..."
-	rm -rf $(PROTO_OUT)
+	rm -rf $(PROTO_OUT) $(BUF_DEPS)

api-linter.yaml

@@ -51,6 +51,6 @@
     - "core::0127::http-annotation"
 
 - included_paths:
-    - "dependencies/gogoproto/gogo.proto"
+    - "google/**/*.proto"
   disabled_rules:
     - "all"

buf.gen.yaml

@@ -0,0 +1,20 @@
+version: v1
+plugins:
+  - plugin: buf.build/protocolbuffers/go:v1.31.0
+    out: ./
+    opt:
+      - paths=source_relative
+  - plugin: buf.build/grpc/go:v1.3.0
+    out: ./
+    opt:
+      - paths=source_relative
+  - plugin: buf.build/grpc-ecosystem/gateway:v2.18.0
+    out: ./
+    opt:
+      - paths=source_relative
+      - allow_patch_feature=false
+  - name: go-helpers
+    out: ./
+    path: ["go", "run", "./protoc-gen-go-helpers"]
+    opt:
+      - paths=source_relative

buf.lock

@@ -1,2 +1,11 @@
 # Generated by buf. DO NOT EDIT.
 version: v1
+deps:
+  - remote: buf.build
+    owner: googleapis
+    repository: googleapis
+    commit: 28151c0d0a1641bf938a7672c500e01d
+  - remote: buf.build
+    owner: grpc-ecosystem
+    repository: grpc-gateway
+    commit: 048ae6ff94ca4476b3225904b1078fad

buf.yaml

@@ -1,10 +1,18 @@
 version: v1
+deps:
+  - buf.build/grpc-ecosystem/grpc-gateway
+build:
+  excludes:
+    # Buf won't accept a local dependency on the google protos but we need them
+    # to run api-linter, so just tell buf it ignore it
+    - google
 breaking:
   use:
     - WIRE_JSON
+  ignore:
+    - google
 lint:
   use:
     - DEFAULT
   ignore:
-    - dependencies
     - google