Add buildpacks configuration for ruby27

PiperOrigin-RevId: 326113166
Change-Id: I00b66f0ffd94d180da776f5a7ab1c93f44ea55c8

builders/BUILD.bazel

@@ -73,6 +73,7 @@ package_group(
         "//builders/gae/ruby26",
         "//builders/gae/ruby27",
         "//builders/gcf/ruby26",
+        "//builders/gcf/ruby27",
         "//builders/gcp/base",
     ],
 )
@@ -88,5 +89,6 @@ package_group(
         "//builders/gcf/php74",
         "//builders/gcf/python38",
         "//builders/gcf/ruby26",
+        "//builders/gcf/ruby27",
     ],
 )

builders/gcf/ruby27/BUILD.bazel

@@ -0,0 +1,16 @@
+load("//tools:defs.bzl", "builder")
+
+package(default_visibility = ["//builders/gcf/ruby27/acceptance:__pkg__"])
+
+licenses(["notice"])
+
+builder(
+    name = "builder",
+    buildpacks = [
+        "//cmd/ruby/functions_framework:functions_framework.tgz",
+        "//cmd/ruby/bundle:bundle.tgz",
+        "//cmd/utils/archive_source:archive_source.tgz",
+        "//cmd/utils/label:label.tgz",
+    ],
+    image = "gcf/ruby27",
+)

builders/gcf/ruby27/acceptance/BUILD.bazel

@@ -0,0 +1,34 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
+
+licenses(["notice"])
+
+exports_files(["config.yaml"])
+
+go_library(
+    name = "acceptance",
+    srcs = ["acceptance.go"],
+    importpath = "github.com/GoogleCloudPlatform/buildpacks/" + package_name(),
+)
+
+go_test(
+    name = "acceptance_test",
+    size = "enormous",
+    srcs = ["acceptance_test.go"],
+    args = [
+        "-test-data=$(location //builders/testdata/ruby:functions)",
+        "-structure-test-config=$(location :config.yaml)",
+        "-builder-source=$(location //builders/gcf/ruby27:builder.tar)",
+        "-builder-prefix=gcfruby27-acceptance-test-",
+    ],
+    data = [
+        ":config.yaml",
+        "//builders/gcf/ruby27:builder.tar",
+        "//builders/testdata/ruby:functions",
+    ],
+    embed = [":acceptance"],
+    rundir = ".",
+    tags = [
+        "local",
+    ],
+    deps = ["//pkg/acceptance"],
+)

builders/gcf/ruby27/acceptance/acceptance.go

@@ -0,0 +1,16 @@
+// Copyright 2020 Google LLC
+//
+// 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.
+
+// Package acceptance implements acceptance tests for a buildpack builder.
+package acceptance

builders/gcf/ruby27/acceptance/acceptance_test.go

@@ -0,0 +1,101 @@
+// Copyright 2020 Google LLC
+//
+// 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.
+package acceptance
+
+import (
+	"testing"
+
+	"github.com/GoogleCloudPlatform/buildpacks/pkg/acceptance"
+)
+
+func init() {
+	acceptance.DefineFlags()
+}
+
+func TestAcceptance(t *testing.T) {
+	builder, cleanup := acceptance.CreateBuilder(t)
+	t.Cleanup(cleanup)
+
+	testCases := []acceptance.Test{
+		{
+			Name: "function with dependencies",
+			App:  "with_dependencies",
+		},
+		{
+			Name:   "function with runtime env var",
+			App:    "with_env_var",
+			RunEnv: []string{"FOO=foo"},
+		},
+		{
+			Name: "function in fn_source file",
+			App:  "with_fn_source",
+			Env:  []string{"GOOGLE_FUNCTION_SOURCE=sub_dir/custom_file.rb"},
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.Name, func(t *testing.T) {
+			t.Parallel()
+
+			tc.Path = "/testFunction"
+			tc.Env = append(tc.Env,
+				"GOOGLE_FUNCTION_TARGET=testFunction",
+				"GOOGLE_RUNTIME=ruby27",
+			)
+			tc.FilesMustExist = append(tc.FilesMustExist,
+				"/layers/google.utils.archive-source/src/source-code.tar.gz",
+				"/workspace/.googlebuild/source-code.tar.gz",
+			)
+
+			acceptance.TestApp(t, builder, tc)
+		})
+	}
+}
+
+func TestFailures(t *testing.T) {
+	builder, cleanup := acceptance.CreateBuilder(t)
+	t.Cleanup(cleanup)
+
+	testCases := []acceptance.FailureTest{
+		{
+			App:       "fail_ruby_version",
+			MustMatch: "but your Gemfile specified",
+		},
+		{
+			App:       "fail_framework_missing",
+			MustMatch: "unable to execute functions-framework",
+		},
+		{
+			Name:      "must fail due to missing source file",
+			App:       "with_dependencies",
+			Env:       []string{"GOOGLE_FUNCTION_SOURCE=missing_file.rb"},
+			MustMatch: "GOOGLE_FUNCTION_SOURCE specified file 'missing_file.rb' but it does not exist",
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.App, func(t *testing.T) {
+			t.Parallel()
+
+			tc.Env = append(tc.Env,
+				"GOOGLE_FUNCTION_TARGET=testFunction",
+				"GOOGLE_RUNTIME=ruby27",
+			)
+
+			acceptance.TestBuildFailure(t, builder, tc)
+		})
+	}
+}

builders/gcf/ruby27/acceptance/config.yaml

@@ -0,0 +1,28 @@
+# Copyright 2020 Google LLC
+#
+# 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.
+
+# Test container structure using a centigrate image with a custom entrypoint.
+
+# See https://github.com/GoogleContainerTools/container-structure-test for the configuration format.
+
+schemaVersion: '2.0.0'
+
+metadataTest:
+  env:
+    - key: PORT
+      value: 8080
+  exposedPorts: ['8080']
+  entrypoint: ['/cnb/lifecycle/launcher']
+  cmd: []
+  workdir: '/srv'

builders/gcf/ruby27/builder.toml

@@ -0,0 +1,39 @@
+description = "Builder for the GCF Ruby 2.6 runtime"
+
+[[buildpacks]]
+  id = "google.ruby.bundle"
+  uri = "bundle.tgz"
+
+[[buildpacks]]
+  id = "google.ruby.functions-framework"
+  uri = "functions_framework.tgz"
+
+[[buildpacks]]
+  id = "google.utils.archive-source"
+  uri = "archive_source.tgz"
+
+[[buildpacks]]
+  id = "google.utils.label"
+  uri = "label.tgz"
+
+[[order]]
+
+  [[order.group]]
+    id = "google.utils.archive-source"
+
+  [[order.group]]
+    id = "google.ruby.bundle"
+
+  [[order.group]]
+    id = "google.ruby.functions-framework"
+
+  [[order.group]]
+    id = "google.utils.label"
+
+[stack]
+  id = "google.ruby27"
+  build-image = "gcr.io/gae-runtimes/buildpacks/ruby27/build"
+  run-image = "gcr.io/gae-runtimes/buildpacks/ruby27/run"
+
+[lifecycle]
+  version = "0.9.0"

cmd/utils/archive_source/buildpack.toml

@@ -30,4 +30,7 @@ id = "google.python38"
 id = "google.python39"
 
 [[stacks]]
-id = "google.ruby26"
+id = "google.ruby26"
+
+[[stacks]]
+id = "google.ruby27"