Add go_repository rule for importing go packages.

go/launcher/proxy/driver_hub.go

@@ -31,7 +31,7 @@ import (
 	"github.com/bazelbuild/rules_webtesting/go/launcher/proxy/webdriver"
 	"github.com/bazelbuild/rules_webtesting/go/metadata/metadata"
 	"github.com/bazelbuild/rules_webtesting/go/util/httphelper"
-	"github.com/gorilla/mux/mux"
+	"github.com/gorilla/mux"
 )
 
 const envTimeout = 5 * time.Minute // some environments such as Android take a long time to start up.

go/launcher/proxy/driver_session.go

@@ -26,7 +26,7 @@ import (
 
 	"github.com/bazelbuild/rules_webtesting/go/launcher/errors"
 	"github.com/bazelbuild/rules_webtesting/go/launcher/proxy/webdriver"
-	"github.com/gorilla/mux/mux"
+	"github.com/gorilla/mux"
 )
 
 // WebDriverSession is an http.Handler for forwarding requests to a WebDriver session.

go/launcher/proxy/quit_handler_test.go

@@ -20,7 +20,7 @@ import (
 
 	"github.com/bazelbuild/rules_webtesting/go/util/bazel"
 	"github.com/bazelbuild/rules_webtesting/go/webtest"
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 func TestCloseOneWindow(t *testing.T) {

go/launcher/proxy/screenshot_test.go

@@ -23,7 +23,7 @@ import (
 
 	"github.com/bazelbuild/rules_webtesting/go/util/bazel"
 	"github.com/bazelbuild/rules_webtesting/go/webtest"
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 func TestScreenshot(t *testing.T) {

go/screenshotter/screenshotter.go

@@ -29,7 +29,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 // Screenshotter allows configurable screenshotting.

go/screenshotter/screenshotter_test.go

@@ -24,7 +24,7 @@ import (
 
 	"github.com/bazelbuild/rules_webtesting/go/util/bazel"
 	"github.com/bazelbuild/rules_webtesting/go/webtest"
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 func TestOfElement(t *testing.T) {

go/webtest.go

@@ -36,7 +36,7 @@ import (
 
 	"github.com/bazelbuild/rules_webtesting/go/metadata/metadata"
 	"github.com/bazelbuild/rules_webtesting/go/util/bazel"
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 var info *BrowserInfo

go/webtest_test.go

@@ -18,7 +18,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/tebeka/selenium/selenium"
+	"github.com/tebeka/selenium"
 )
 
 func TestProvisionBrowser_NoCaps(t *testing.T) {

web/internal/go_repository.bzl

@@ -0,0 +1,103 @@
+# Copyright 2016 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Defines a go_repository rule that downloads and sets up a go package."""
+
+
+def go_repository(name,
+                  urls,
+                  sha256,
+                  license,
+                  import_name,
+                  strip_prefix=None,
+                  excluded_srcs=None,
+                  license_file="LICENSE",
+                  deps=None,
+                  testonly=None):
+  """go_repository downloads a go package and makes it available for import.
+
+  The bazel dep for the go package is "@name".
+  The go import for the go package is "import_name".
+
+  Args:
+      name: Name of the repository rule. BUILD files can depend on the package
+        as "@name"
+      urls: A list of URLs where the package can be downloaded from.
+      sha256: SHA256 for downloaded file.
+      license: A string indicating the licenses for the package.
+        e.g. "licenses([\"notice\"])  # MIT.".
+      import_name: The value for go_prefix. Go files can import this package
+        as import "import_name".
+      strip_prefix: Any directories to strip of the prefix when extracting the
+        downloaded file.
+      excluded_srcs: Any .go file in the package that should be excluded.
+        **/*test.go is always excluded.
+      license_file: The name of the license file. By default "LICENSE".
+      deps: Any dependencies for the go package.
+      testonly: Whether the rules should be marked testonly.
+  """
+  if deps:
+    deps_str = '"' + '",\n        "'.join(deps) + '"'
+  else:
+    deps_str = ''
+
+  if excluded_srcs:
+    excludes_str = '"' + '",\n            "'.join(excluded_srcs) + '",'
+  else:
+    excludes_str = ''
+
+  build_file = """
+load("@io_bazel_rules_go//go:def.bzl", "go_prefix", "go_library")
+
+{license}
+
+exports_files(["{license_file}"])
+
+go_prefix("{import_name}")
+
+go_library(
+    name = "go_default_library",
+    srcs = glob(
+        ["*.go"],
+        exclude = [
+            "*test.go",
+            {excludes}
+        ],
+    ),
+    testonly = {testonly},
+    deps = [
+        {deps}
+    ],
+)
+
+alias(
+    name = "{name}",
+    actual = ":go_default_library",
+    testonly = {testonly},
+    visibility = ["//visibility:public"],
+)
+""".format(
+      name=name,
+      license=license,
+      license_file=license_file,
+      import_name=import_name,
+      testonly=testonly,
+      deps=deps_str,
+      excludes=excludes_str)
+
+  native.new_http_archive(
+      name=name,
+      build_file_content=build_file,
+      sha256=sha256,
+      urls=urls,
+      strip_prefix=strip_prefix)

web/repositories.bzl

@@ -15,7 +15,7 @@
 
 load("//web/internal:java_import_external.bzl", "java_import_external")
 load("//web/internal:platform_http_file.bzl", "platform_http_file")
-
+load("//web/internal:go_repository.bzl", "go_repository")
 
 def web_test_repositories(
     omit_cglib_nodep=False,
@@ -137,23 +137,26 @@ def cglib_nodep():
 
 
 def com_github_gorilla_mux():
-  native.new_http_archive(
+  go_repository(
       name="com_github_gorilla_mux",
-      build_file=str(Label("//build_files:com_github_gorilla_mux.BUILD")),
+      import_name="github.com/gorilla/mux",
       sha256="a32c13a36c58cb321136231ae8b67b0c6ad3c5f462e65eb6771f59c44b44ccba",
       strip_prefix="mux-757bef944d0f21880861c2dd9c871ca543023cba",
+      excluded_srcs = ["context_gorilla.go"],
+      license = "licenses([\"notice\"])",
       urls=[
           "http://bazel-mirror.storage.googleapis.com/github.com/gorilla/mux/archive/757bef944d0f21880861c2dd9c871ca543023cba.tar.gz",
           "https://github.com/gorilla/mux/archive/757bef944d0f21880861c2dd9c871ca543023cba.tar.gz",
       ])
 
 
 def com_github_tebeka_selenium():
-  native.new_http_archive(
+  go_repository(
       name="com_github_tebeka_selenium",
-      build_file=str(Label("//build_files:com_github_tebeka_selenium.BUILD")),
+      import_name="github.com/tebeka/selenium",
       sha256="c33decb47a9b81d5221cda29c8f040ca5cf874956bbb002ef82b06e07ed78c3d",
       strip_prefix="selenium-f6f9a3638fa049f85b0aaf42e693e1c4ab257d4f",
+      license="licenses([\"notice\"])  # MIT.",
       urls=[
           "http://bazel-mirror.storage.googleapis.com/github.com/tebeka/selenium/archive/f6f9a3638fa049f85b0aaf42e693e1c4ab257d4f.tar.gz",
           "https://github.com/tebeka/selenium/archive/f6f9a3638fa049f85b0aaf42e693e1c4ab257d4f.tar.gz",