Added Bazel support (grpc-ecosystem#599)

Fixes: grpc-ecosystem#66

.gitignore

@@ -1,2 +1,9 @@
 _output/
 .idea
+
+# Bazel.
+bazel-bin
+bazel-genfiles
+bazel-grpc-gateway
+bazel-out
+bazel-testlogs

.travis.yml

@@ -1,41 +1,49 @@
 language: go
 sudo: false
 go:
-- 1.9.x
-- 1.10.x
-- master
+  - 1.9.x
+  - 1.10.x
+  - master
 go_import_path: github.com/grpc-ecosystem/grpc-gateway
 cache:
   directories:
-  - $HOME/local
-  - ${TRAVIS_BUILD_DIR}/examples/browser/node_modules
+    - $HOME/local
+    - ${TRAVIS_BUILD_DIR}/examples/browser/node_modules
+    - $HOME/.cache/_grpc_gateway_bazel
 before_install:
-- ./.travis/install-protoc.sh 3.1.0
-- ./.travis/install-swagger-codegen.sh 2.2.2
-- nvm install v6.1 && nvm use v6.1 && node --version
-- go get github.com/golang/lint/golint
-- go get github.com/dghubble/sling
-- go get github.com/go-resty/resty
+  - if [ "${USE_BAZEL}" = true ]; then ./.travis/install-bazel.sh 0.12.0; fi
+  - if [ -z "${USE_BAZEL}" ]; then ./.travis/install-protoc.sh 3.1.0; fi
+  - if [ -z "${USE_BAZEL}" ]; then ./.travis/install-swagger-codegen.sh 2.2.2; fi
+  - if [ -z "${USE_BAZEL}" ]; then nvm install v6.1 && nvm use v6.1 && node --version; fi
+  - go get github.com/golang/lint/golint
+  - go get github.com/dghubble/sling
+  - go get github.com/go-resty/resty
 install:
-- go get github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
-- go get github.com/grpc-ecosystem/grpc-gateway/runtime
-- go get github.com/grpc-ecosystem/grpc-gateway/examples
-- go get github.com/grpc-ecosystem/grpc-gateway/examples/server
+  - go get github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
+  - go get github.com/grpc-ecosystem/grpc-gateway/runtime
+  - go get github.com/grpc-ecosystem/grpc-gateway/examples
+  - go get github.com/grpc-ecosystem/grpc-gateway/examples/server
 before_script:
-- sh -c 'cd examples/browser && npm install'
+  - sh -c 'cd examples/browser && npm install'
 script:
-- make realclean && make examples SWAGGER_CODEGEN="java -jar $HOME/local/swagger-codegen-cli.jar"
-- if (go version | grep -q "${GO_VERSION_TO_DIFF_TEST}") && [ -z "${GATEWAY_PLUGIN_FLAGS}" ]; then test -z "$(git status --porcelain)" || (git status; git diff; exit 1); fi
-- env GLOG_logtostderr=1 go test -race -v github.com/grpc-ecosystem/grpc-gateway/...
-- if (go version | grep -q "${GO_VERSION_TO_DIFF_TEST}") && [ -z "${GATEWAY_PLUGIN_FLAGS}" ]; then env GLOG_logtostderr=1 ./bin/coverage; fi
-- make lint
-- sh -c 'cd examples/browser && node ./node_modules/gulp/bin/gulp'
+  - if [ "${USE_BAZEL}" = true ]; then ./.travis/bazel-build.sh; fi
+  - if [ "${USE_BAZEL}" = true ]; then ./.travis/bazel-test.sh; fi
+  - if [ -z "${USE_BAZEL}" ]; then make realclean && make examples SWAGGER_CODEGEN="java -jar $HOME/local/swagger-codegen-cli.jar"; fi
+  - if [ -z "${USE_BAZEL}" ] && (go version | grep -q "${GO_VERSION_TO_DIFF_TEST}") && [ -z "${GATEWAY_PLUGIN_FLAGS}" ]; then test -z "$(git status --porcelain)" || (git status; git diff; exit 1); fi
+  - if [ -z "${USE_BAZEL}" ]; then env GLOG_logtostderr=1 go test -race -v github.com/grpc-ecosystem/grpc-gateway/...; fi
+  - if [ -z "${USE_BAZEL}" ]; then make lint; fi
+  - if [ -z "${USE_BAZEL}" ]; then sh -c 'cd examples/browser && node ./node_modules/gulp/bin/gulp'; fi
+  - if (go version | grep -q "${GO_VERSION_TO_DIFF_TEST}") && [ -z "${GATEWAY_PLUGIN_FLAGS}" ]; then env GLOG_logtostderr=1 ./bin/coverage; fi
 after_success:
   - bash <(curl -s https://codecov.io/bash)
 env:
   global:
-  - "PATH=$PATH:$HOME/local/bin"
-  - GO_VERSION_TO_DIFF_TEST="go version go1\.10\.[0-9]\+ linux/amd64"
+    - "PATH=$PATH:$HOME/local/bin"
+    - GO_VERSION_TO_DIFF_TEST="go version go1\.10\.[0-9]\+ linux/amd64"
   matrix:
-  - GATEWAY_PLUGIN_FLAGS=
-  - GATEWAY_PLUGIN_FLAGS=request_context=false
+    - GATEWAY_PLUGIN_FLAGS=
+    - GATEWAY_PLUGIN_FLAGS=request_context=false
+matrix:
+  include:
+    - go: master
+      env: USE_BAZEL=true

.travis/bazel-build.sh

@@ -0,0 +1,10 @@
+#!/bin/sh -eu
+
+bazel \
+  --batch \
+  --output_base=$HOME/.cache/_grpc_gateway_bazel \
+  --host_jvm_args=-Xmx500m \
+  --host_jvm_args=-Xms500m \
+  build \
+  --local_resources=400,1,1.0 \
+  //...

.travis/bazel-test.sh

@@ -0,0 +1,12 @@
+#!/bin/sh -eu
+
+bazel \
+  --batch \
+  --output_base=$HOME/.cache/_grpc_gateway_bazel \
+  --host_jvm_args=-Xmx500m \
+  --host_jvm_args=-Xms500m \
+  test \
+  --local_resources=400,1,1.0 \
+  --test_output=errors \
+  --features=race \
+  //...

.travis/install-bazel.sh

@@ -0,0 +1,20 @@
+#!/bin/sh -eu
+
+bazel_version=$1
+
+if test -z "${bazel_version}"; then
+	echo "Usage: .travis/install-bazel.sh bazel-version"
+	exit 1
+fi
+
+if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
+	OS=darwin
+else
+	OS=linux
+fi
+
+filename=bazel-${bazel_version}-installer-${OS}-x86_64.sh
+wget https://github.com/bazelbuild/bazel/releases/download/${bazel_version}/${filename}
+chmod +x $filename
+./$filename --user
+rm -f $filename

BUILD

@@ -0,0 +1,23 @@
+load("@bazel_gazelle//:def.bzl", "gazelle")
+
+# gazelle:exclude third_party
+
+gazelle(
+    name = "gazelle_diff",
+    mode = "diff",
+    prefix = "github.com/grpc-ecosystem/grpc-gateway",
+)
+
+gazelle(
+    name = "gazelle_fix",
+    mode = "fix",
+    prefix = "github.com/grpc-ecosystem/grpc-gateway",
+)
+
+package_group(
+    name = "generators",
+    packages = [
+        "//protoc-gen-grpc-gateway/...",
+        "//protoc-gen-swagger/...",
+    ],
+)

WORKSPACE

@@ -0,0 +1,41 @@
+workspace(name = "grpc_ecosystem_grpc_gateway")
+
+http_archive(
+    name = "io_bazel_rules_go",
+    url = "https://github.com/bazelbuild/rules_go/releases/download/0.10.3/rules_go-0.10.3.tar.gz",
+    sha256 = "feba3278c13cde8d67e341a837f69a029f698d7a27ddbb2a202be7a10b22142a",
+)
+
+http_archive(
+    name = "bazel_gazelle",
+    url = "https://github.com/bazelbuild/bazel-gazelle/releases/download/0.10.1/bazel-gazelle-0.10.1.tar.gz",
+    sha256 = "d03625db67e9fb0905bbd206fa97e32ae9da894fe234a493e7517fd25faec914",
+)
+
+load("@io_bazel_rules_go//go:def.bzl", "go_rules_dependencies", "go_register_toolchains")
+
+go_rules_dependencies()
+
+go_register_toolchains()
+
+load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
+
+gazelle_dependencies()
+
+load("@io_bazel_rules_go//go:def.bzl", "go_repository")
+
+go_repository(
+    name = "com_github_rogpeppe_fastuuid",
+    commit = "6724a57986aff9bff1a1770e9347036def7c89f6",
+    importpath = "github.com/rogpeppe/fastuuid",
+)
+
+go_repository(
+    name = "com_github_go_resty_resty",
+    commit = "f8815663de1e64d57cdd4ee9e2b2fa96977a030e",
+    importpath = "github.com/go-resty/resty",
+)
+
+load("//:repositories.bzl", "repositories")
+
+repositories()

codegenerator/BUILD.bazel

@@ -0,0 +1,26 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+package(default_visibility = ["//:generators"])
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "parse_req.go",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/codegenerator",
+    deps = [
+        "@com_github_golang_protobuf//proto:go_default_library",
+        "@com_github_golang_protobuf//protoc-gen-go/plugin:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_xtest",
+    srcs = ["parse_req_test.go"],
+    deps = [
+        ":go_default_library",
+        "@com_github_golang_protobuf//proto:go_default_library",
+        "@com_github_golang_protobuf//protoc-gen-go/plugin:go_default_library",
+    ],
+)

examples/BUILD.bazel

@@ -0,0 +1,45 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library", "go_test")
+
+package(default_visibility = ["//visibility:private"])
+
+go_library(
+    name = "go_default_library",
+    srcs = ["main.go"],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples",
+    deps = [
+        "//examples/examplepb:go_default_library",
+        "//runtime:go_default_library",
+        "@com_github_golang_glog//:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "examples",
+    embed = [":go_default_library"],
+)
+
+go_test(
+    name = "go_default_test",
+    size = "small",
+    srcs = [
+        "client_test.go",
+        "integration_test.go",
+        "main_test.go",
+        "proto_error_test.go",
+    ],
+    embed = [":go_default_library"],
+    deps = [
+        "//examples/clients/abe:go_default_library",
+        "//examples/clients/echo:go_default_library",
+        "//examples/examplepb:go_default_library",
+        "//examples/server:go_default_library",
+        "//examples/sub:go_default_library",
+        "//runtime:go_default_library",
+        "@com_github_golang_protobuf//jsonpb:go_default_library",
+        "@com_github_golang_protobuf//proto:go_default_library",
+        "@com_github_golang_protobuf//ptypes/empty:go_default_library",
+        "@org_golang_google_genproto//googleapis/rpc/status:go_default_library",
+        "@org_golang_google_grpc//codes:go_default_library",
+    ],
+)

examples/clients/abe/BUILD.bazel

@@ -0,0 +1,26 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "ProtobufDuration.go",
+        "a_bit_of_everything_nested.go",
+        "a_bit_of_everything_service_api.go",
+        "api_client.go",
+        "api_response.go",
+        "camel_case_service_name_api.go",
+        "configuration.go",
+        "echo_rpc_api.go",
+        "echo_service_api.go",
+        "examplepb_a_bit_of_everything.go",
+        "examplepb_body.go",
+        "examplepb_numeric_enum.go",
+        "nested_deep_enum.go",
+        "protobuf_empty.go",
+        "sub_string_message.go",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples/clients/abe",
+    deps = ["@com_github_go_resty_resty//:go_default_library"],
+)

examples/clients/echo/BUILD.bazel

@@ -0,0 +1,16 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "api_client.go",
+        "api_response.go",
+        "configuration.go",
+        "echo_service_api.go",
+        "examplepb_simple_message.go",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples/clients/echo",
+    deps = ["@com_github_go_resty_resty//:go_default_library"],
+)

examples/examplepb/BUILD.bazel

@@ -0,0 +1,51 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//proto:def.bzl", "go_proto_library")
+
+package(default_visibility = ["//visibility:public"])
+
+proto_library(
+    name = "examplepb_proto",
+    srcs = [
+        "a_bit_of_everything.proto",
+        "echo_service.proto",
+        "flow_combination.proto",
+        "stream.proto",
+        "wrappers.proto",
+    ],
+    deps = [
+        "//examples/sub:sub_proto",
+        "//examples/sub2:sub2_proto",
+        "//protoc-gen-swagger/options:options_proto",
+        "@com_github_googleapis_googleapis//google/api:api_proto",
+        "@com_google_protobuf//:duration_proto",
+        "@com_google_protobuf//:empty_proto",
+        "@com_google_protobuf//:timestamp_proto",
+        "@com_google_protobuf//:wrappers_proto",
+    ],
+)
+
+go_proto_library(
+    name = "examplepb_go_proto",
+    compilers = [
+        "@io_bazel_rules_go//proto:go_grpc",
+        "//protoc-gen-grpc-gateway:go_gen_grpc_gateway",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples/examplepb",
+    proto = ":examplepb_proto",
+    deps = [
+        "//examples/sub:go_default_library",
+        "//examples/sub2:go_default_library",
+        "//protoc-gen-swagger/options:go_default_library",
+        "@com_github_golang_protobuf//ptypes/duration:go_default_library",
+        "@com_github_golang_protobuf//ptypes/empty:go_default_library",
+        "@com_github_golang_protobuf//ptypes/timestamp:go_default_library",
+        "@com_github_golang_protobuf//ptypes/wrappers:go_default_library",
+        "@com_github_googleapis_googleapis//google/api:go_default_library",
+    ],
+)
+
+go_library(
+    name = "go_default_library",
+    embed = [":examplepb_go_proto"],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples/examplepb",
+)

examples/server/BUILD.bazel

@@ -0,0 +1,29 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "a_bit_of_everything.go",
+        "echo.go",
+        "flow_combination.go",
+        "main.go",
+    ],
+    importpath = "github.com/grpc-ecosystem/grpc-gateway/examples/server",
+    deps = [
+        "//examples/examplepb:go_default_library",
+        "//examples/sub:go_default_library",
+        "//examples/sub2:go_default_library",
+        "@com_github_golang_glog//:go_default_library",
+        "@com_github_golang_protobuf//proto:go_default_library",
+        "@com_github_golang_protobuf//ptypes/duration:go_default_library",
+        "@com_github_golang_protobuf//ptypes/empty:go_default_library",
+        "@com_github_rogpeppe_fastuuid//:go_default_library",
+        "@org_golang_google_genproto//googleapis/rpc/errdetails:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_google_grpc//codes:go_default_library",
+        "@org_golang_google_grpc//metadata:go_default_library",
+        "@org_golang_google_grpc//status:go_default_library",
+    ],
+)