refactor!: bazel build (#442)

* refactor!: bazel build

* fix: PR feedback

* fix: PR feedback

* test: fix circleci

.circleci/config.yml

@@ -2,72 +2,83 @@ version: 2.1
 jobs:
   testGenerator:
     docker:
-      - image: circleci/node:10-browsers
+      - image: l.gcr.io/google/bazel
     working_directory: /home/circleci/project/gapic-generator-typescript
     steps:
       - checkout
-      - run:
-          name: Install protoc
-          command: |
-            wget https://github.com/protocolbuffers/protobuf/releases/download/v3.10.0/protoc-3.10.0-linux-x86_64.zip
-            cd / && sudo unzip /tmp/protoc-3.10.0-linux-x86_64.zip
-            protoc --version
-          working_directory: /tmp
-      - run:
-          name: Run npm install
-          command: |
-            npm install
       - run:
           name: Run generator unit tests
           command: |
-            npm link
-            npm test
-          environment:
-            NPM_CONFIG_PREFIX: /tmp/.npm-global
-      - run: 
-          name: Run linting
+            bazel test //:unit_tests
+      - run:
+          name: Unzip baseline tests output
           command: |
-            npm run lint
+            mkdir /home/circleci/project/baselines
+            unzip bazel-testlogs/unit_tests/test.outputs/outputs.zip -d /home/circleci/project/baselines
       - run:
-          name: copy protos to generated client library & move .test-out-* to project/out/
+          name: Copy protos to baselines
           command: |
-            for dir in .test-out-* ; do
+            for dir in /home/circleci/project/baselines/.test-out-* ; do
               cp -r test-fixtures/protos $dir
             done
-      - run: 
-          name: move test out folders to a separate folder
+      - run:
+          name: Copy compiled test applications
+          # bazel-bin/ is a symlink to /root/.cache/bazel/... and we won't have it
+          # available in Node container. Let's just save what we need.
           command: |
-            mkdir /home/circleci/project/baselines
-            cp -r .test-out-* /home/circleci/project/baselines
+            mkdir test-application-runners
+            cp bazel-bin/test/test-application/test-*.js test-application-runners/
+            cp bazel-testlogs/unit_tests/test.outputs/outputs.zip test-application-runners/
       - persist_to_workspace:
           root: /home/circleci/project
           paths:
             - gapic-generator-typescript
             - baselines
+  lint:
+    docker:
+      - image: circleci/node:10-browsers
+    steps:
+      - attach_workspace:
+          at: /home/circleci/workspace
+      - run:
+          name: Run lint
+          working_directory: /home/circleci/workspace/gapic-generator-typescript
+          command: |
+            rm -f bazel-*  # we don't need these broken symlinks here
+            # we have some extra stuff here in Circle that we don't want to lint
+            echo test-application-runners >> .eslintignore
+            echo test-application-runners >> .prettierignore
+            # and now finally...
+            npm run lint
   showcaseTestApplications:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
+      - run:
+          name: Prepare test applications
+          working_directory: /home/circleci/workspace/gapic-generator-typescript
+          command: |
+            rm -f bazel-testlogs
+            mkdir -p bazel-testlogs/unit_tests/test.outputs
+            cp test-application-runners/outputs.zip bazel-testlogs/unit_tests/test.outputs/
       - run:
           name: Run showcase test for Typescript users
           working_directory: /home/circleci/workspace/gapic-generator-typescript
-          command: npm run ts-test-application
+          command: npx mocha test-application-runners/test-ts.js
           environment:
             NPM_CONFIG_PREFIX: /tmp/.npm-global
       - run:
           name: Run showcase test for JavaScript users
           working_directory: /home/circleci/workspace/gapic-generator-typescript
-          command: npm run js-test-application
+          command: npx mocha test-application-runners/test-js.js
           environment:
             NPM_CONFIG_PREFIX: /tmp/.npm-global
   showcaseLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -84,8 +95,7 @@ jobs:
   kmsLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -95,8 +105,7 @@ jobs:
   translateLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -106,8 +115,7 @@ jobs:
   monitoringLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -117,8 +125,7 @@ jobs:
   dlpLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -128,8 +135,7 @@ jobs:
   ttsLibTest:
     docker:
       - image: circleci/node:10-browsers
-    steps: 
-      - checkout
+    steps:
       - attach_workspace:
           at: /home/circleci/workspace
       - run:
@@ -141,6 +147,9 @@ workflows:
   tests:
     jobs:
       - testGenerator
+      - lint:
+          requires:
+            - testGenerator
       - showcaseTestApplications:
           requires:
             - testGenerator

.eslintignore

@@ -4,4 +4,5 @@ build/
 docs/
 protos/
 test-fixtures/
-pbjs-genfiles/
+bazel-*/
+coverage/

.gitignore

@@ -10,7 +10,6 @@ config.yaml
 ignored
 build
 .vscode
-package-lock.json
 pbjs-genfiles/
 .DS_Store
 .idea
@@ -26,3 +25,4 @@ docker/gitlog.txt
 .showcase-typescript
 .test-application-js
 .test-application-ts
+bazel-*

.prettierignore

@@ -3,3 +3,4 @@
 build/
 docs/
 protos/
+bazel-*/

BUILD.bazel

@@ -0,0 +1,164 @@
+# Allow any ts_library rules in this workspace to reference the config
+exports_files(["tsconfig.json"], visibility = ["//:__subpackages__"])
+
+package(default_visibility = ["//visibility:public"])
+
+load("@build_bazel_rules_nodejs//:index.bzl", "nodejs_binary", "nodejs_test")
+load("@npm_bazel_typescript//:index.bzl", "ts_project", "ts_config")
+load("@npm_bazel_labs//:index.bzl", "protobufjs_ts_library")
+
+proto_library(
+    name = "google_protobuf_protos",
+    srcs = glob(["node_modules/google-gax/build/protos/google/protobuf/*.proto"]) +
+    [
+        "node_modules/google-gax/build/protos/google/protobuf/compiler/plugin.proto",
+    ],
+    strip_import_prefix = "node_modules/google-gax/build/protos",
+)
+
+proto_library(
+    name = "google_rpc_protos",
+    deps = [
+        ":google_protobuf_protos",
+    ],
+    srcs = glob(["node_modules/google-gax/build/protos/google/rpc/*.proto"]),
+    strip_import_prefix = "node_modules/google-gax/build/protos/",
+)
+
+proto_library(
+    name = "google_api_protos",
+    deps = [
+        ":google_protobuf_protos",
+    ],
+    srcs = glob(["node_modules/google-gax/build/protos/google/api/*.proto"]),
+    strip_import_prefix = "node_modules/google-gax/build/protos",
+)
+
+proto_library(
+    name = "google_longrunning_protos",
+    deps = [
+        ":google_protobuf_protos",
+        ":google_api_protos",
+        ":google_rpc_protos",
+    ],
+    srcs = ["node_modules/google-gax/build/protos/google/longrunning/operations.proto"],
+    strip_import_prefix = "node_modules/google-gax/build/protos",
+)
+
+proto_library(
+    name = "service_config_proto",
+    deps = [
+        ":google_protobuf_protos",
+        ":google_rpc_protos",
+    ],
+    srcs = ["protos/service_config.proto"],
+    strip_import_prefix = "protos/",
+)
+
+protobufjs_ts_library(
+    name = "protos",
+    deps = [
+        ":google_api_protos",
+        ":google_longrunning_protos",
+        ":service_config_proto",
+    ]
+)
+
+filegroup(
+    name = "templates",
+    srcs = glob(["templates/**/*.*", "templates/**/.*"]),
+)
+
+filegroup(
+    name = "test_fixtures",
+    srcs = glob(["test-fixtures/**/*.*"]),
+)
+
+filegroup(
+    name = "baselines",
+    srcs = glob(["baselines/**/*.*", "baselines/**/.*"]),
+)
+
+npm_runtime_dependencies = [
+    "@npm//file-system",
+    "@npm//fs-extra",
+    "@npm//get-stdin",
+    "@npm//google-gax",
+    "@npm//js-yaml",
+    "@npm//module-alias",
+    "@npm//nunjucks",
+    "@npm//object-hash",
+    "@npm//protobufjs",
+    "@npm//yargs",
+]
+
+npm_test_dependencies = npm_runtime_dependencies + [
+    "@npm//assert-rejects",
+    "@npm//espower-typescript",
+    "@npm//sinon",
+    "@npm//mocha",
+]
+
+npm_compile_dependencies = npm_test_dependencies + [
+    "@npm//@types/js-yaml",
+    "@npm//@types/fs-extra",
+    "@npm//@types/get-stdin",
+    "@npm//@types/mocha",
+    "@npm//@types/module-alias",
+    "@npm//@types/node",
+    "@npm//@types/nunjucks",
+    "@npm//@types/object-hash",
+    "@npm//@types/sinon",
+    "@npm//@types/yargs",
+    "@npm//gts",
+]
+
+ts_project(
+    name = "compile",
+    srcs = glob([
+        "src/**/*.ts",
+        "test/**/*.ts",
+        "tools/**/*.ts",
+        "index.d.ts"
+    ]),
+    tsconfig = "//:tsconfig.json",
+    extends = ["@npm//:node_modules/gts/tsconfig-google.json"],
+    source_map = True,
+    declaration = True,
+    deps = [
+        ":protos",
+    ] + npm_compile_dependencies,
+)
+
+nodejs_binary(
+    name = "protoc_plugin",
+    entry_point = "//:src/protoc-plugin.js",
+    data = [
+        ":compile",
+        ":templates",
+        ":protos",
+    ] + npm_runtime_dependencies,
+)
+
+nodejs_binary(
+    name = "gapic_generator_typescript",
+    entry_point = "//:src/gapic-generator-typescript.js",
+    data = [
+        ":protoc_plugin",
+        ":compile",
+        ":templates",
+        ":protos",
+        "@com_google_protobuf//:protoc",
+    ] + npm_runtime_dependencies,
+)
+
+nodejs_test(
+    name = "unit_tests",
+    entry_point = "@npm//:node_modules/mocha/bin/mocha",
+    args = ["test/unit/"],
+    data = [
+        ":gapic_generator_typescript",
+        ":test_fixtures",
+        ":baselines",
+    ] + npm_test_dependencies,
+)