Add Gripmock for grpc mocking

gripmock/Dockerfile

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+# BASE_TAG *may* include VERSION, docker docs use TAG for the image being built
+# https://docs.docker.com/engine/reference/commandline/image_tag/
+ARG BASE_TAG=latest
+
+FROM tkpd/gripmock:v1.12.1
+
+# NOTE: the protoc stuff is copied from the builder image repo.
+
+# protoc command
+ENV PROTOC_VERSION=24.3
+RUN PROTOC_ARCH=$(uname -m); \
+  if test "$PROTOC_ARCH" = "aarch64"; then PROTOC_ARCH=aarch_64; fi; \
+  wget https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-${PROTOC_ARCH}.zip \
+  && unzip -q -o protoc-${PROTOC_VERSION}-linux-${PROTOC_ARCH}.zip -d /usr/local bin/protoc \
+  && chmod +x /usr/local/bin/protoc \
+  && unzip -q -o protoc-${PROTOC_VERSION}-linux-${PROTOC_ARCH}.zip -d /usr/local include/* \
+  && chmod -R +rx /usr/local/include \
+  && rm -rf protoc-${PROTOC_VERSION}-linux-${PROTOC_ARCH}.zip
+
+# Download common google api proto files.
+ENV GOOGLE_COMMON_PROTOS_VERSION=1.50.0
+RUN wget https://github.com/googleapis/api-common-protos/archive/refs/tags/${GOOGLE_COMMON_PROTOS_VERSION}.tar.gz \
+  && tar -C /usr/local -xvzf ${GOOGLE_COMMON_PROTOS_VERSION}.tar.gz \
+  && rm -rf /usr/local/usr/local/api-common-protos-master \
+  && mv /usr/local/api-common-protos-${GOOGLE_COMMON_PROTOS_VERSION} /usr/local/api-common-protos-master \
+  && rm -f ${GOOGLE_COMMON_PROTOS_VERSION}.tar.gz
+
+# https://github.com/golang/protobuf/releases
+# https://github.com/grpc-ecosystem/grpc-gateway/releases
+# https://github.com/protocolbuffers/protobuf/releases
+#
+# TODO: it is not recommended to install pinned versions of grpc_gateway,
+#       protoc-gen-go and protoc-gen-grpc-gateway in a Dockerfile. Less
+#       prone to failure is to rely on the tools/tools.go file and control
+#       versions in go.mod. (Single source of truth)
+#       (From conversation with jbrandhorst on slack grpc-gateway channel)
+#       see ticket #756
+#       Howver - for now - we must ensure that versions in this Dockerfile
+#       corerspond to versions in src/go.mod in the avid repo
+# ensure that these values correspond to those in src/go.mod
+# Hybrid tools - installs tools plus importable packages
+ENV GRPC_GATEWAY_VERSION=2.18.0
+RUN go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway@v${GRPC_GATEWAY_VERSION} \
+  && go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-openapiv2@v${GRPC_GATEWAY_VERSION}
+
+ENV PROTOC_GEN_GO_GRPC_VERSION=1.3.0
+RUN go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v${PROTOC_GEN_GO_GRPC_VERSION}
+
+# Additional proto utilities
+ENV PROTOC_GEN_VALIDATE_VERSION=v1.0.2
+ENV PROTOC_GEN_DOC_VERSION=v1.5.1
+RUN go install github.com/envoyproxy/protoc-gen-validate@${PROTOC_GEN_VALIDATE_VERSION} \
+  && go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@${PROTOC_GEN_DOC_VERSION}
+
+# add go.mod to allow datrails api module
+COPY go.mod /go/src/github.com/tokopedia/gripmock/go.mod
+
+# ensure we download the datatrails common api generated code
+RUN go mod download github.com/datatrails/go-datatrails-common-api-gen
+RUN go get github.com/datatrails/go-datatrails-common-api-gen/assets/v2/[email protected]
+
+# due to us passing in the proto and also using the api gen as a dependency
+#  we have a namespace conflict, however they are both the same proto, so just turn
+#  the error into a warning.
+ENV GOLANG_PROTOBUF_REGISTRATION_CONFLICT=warn
+
+ENTRYPOINT ["gripmock"]

gripmock/Readme.md

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+## Gripmock is a mock for proto
+
+Got as far as including the proto in a command like this
+
+## Build the docker image
+
+```
+docker build . -t gripmock
+```
+
+## Run gRPC mock server
+
+```
+docker run -p 4770:4770 -p 4771:4771 -v ~/workspace/go-datatrails-common-api:/protobuf -v ~/workspace/go-datatrails-common-api:/proto gripmock --imports=/protobuf,/usr/local/api-common-protos-master,/usr/local/include,/go/pkg/mod/github.com/envoyproxy/[email protected],/go/pkg/mod/github.com/grpc-ecosystem/grpc-gateway/[email protected] /proto/datatrails-common-api/assets/v2/assets/service.proto
+```
+
+## Now the gRPC server is up and running, we can add expectations of the assets grpc service:
+
+```
+curl -X POST -d '{"service":"Assets", "method":"GetAsset","input":{"equals":{"uuid":"foo"}},"output":{"data":{"identity":"foo", "public":true}}}' localhost:4771/add
+```
+
+response:
+
+```
+Success add stub
+```
+
+## Finally we can use grpcurl or similar to check that the service works:
+
+```
+grpcurl -plaintext -d '{"uuid":"foo"}' localhost:4770 archivist.v2.Assets/GetAsset
+```
+
+response:
+
+```
+{
+  "identity": "foo",
+  "public": true
+}
+```

gripmock/go.mod

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+module github.com/tokopedia/gripmock
+
+go 1.15
+
+replace (
+	// These pseudoversions are for: ConsenSys/[email protected]
+	github.com/coreos/etcd => github.com/Consensys/etcd v3.3.13-quorum197+incompatible
+
+	// github.com/datatrails/go-datatrails-common-api => ../../go-datatrails-common-api/api
+	github.com/ethereum/go-ethereum => github.com/ConsenSys/quorum v0.0.0-20221208112643-d318a5aa973a
+	// github.com/ethereum/go-ethereum/crypto/secp256k1 => github.com/ConsenSys/goquorum-crypto-secp256k1 v0.0.2
+	github.com/ethereum/go-ethereum/crypto/secp256k1 => github.com/ConsenSys/goquorum-crypto-secp256k1 v0.0.2
+
+)
+
+require (
+	github.com/datatrails/go-datatrails-common-api-gen v0.3.3 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-chi/chi v4.1.2+incompatible
+	github.com/golang/protobuf v1.5.3
+	github.com/lithammer/fuzzysearch v1.1.1
+	github.com/stretchr/testify v1.8.4
+	github.com/tokopedia/gripmock/protogen v0.0.0 // indirect
+	github.com/tokopedia/gripmock/protogen/example v0.0.0 // indirect
+	google.golang.org/genproto v0.0.0-20231127180814-3a041ad873d4
+	google.golang.org/grpc v1.59.0
+	google.golang.org/protobuf v1.31.0
+)
+
+// this is for generated server to be able to run
+replace github.com/tokopedia/gripmock/protogen/example v0.0.0 => ./protogen/example
+
+// this is for example client to be able to run
+replace github.com/tokopedia/gripmock/protogen v0.0.0 => ./protogen