Add GitLab CI

internal/cmdexport/orchestrators/gitlabci.go

@@ -0,0 +1,88 @@
+// 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 orchestrators
+
+import (
+	"fmt"
+	"path"
+	"strings"
+
+	"github.com/GoogleContainerTools/kpt/internal/cmdexport/types"
+	"gopkg.in/yaml.v3"
+)
+
+// GitLabCi is a simplified representation of GitLab CI/CD Configuration.
+// @see https://docs.gitlab.com/ee/ci/yaml/
+type GitLabCI struct {
+	Stages []string `yaml:",omitempty"`
+	// @see https://github.com/go-yaml/yaml/issues/63
+	GitLabCIStages `yaml:",inline"`
+}
+
+type GitLabCIStages map[string]GitLabCIStage
+
+type GitLabCIStage struct {
+	Stage    string   `yaml:",omitempty"`
+	Image    string   `yaml:",omitempty"`
+	Services []string `yaml:",omitempty"`
+	Script   string   `yaml:",omitempty"`
+}
+
+func (p *GitLabCI) Init(config *types.PipelineConfig) Pipeline {
+	stage := "run-kpt-functions"
+	p.Stages = []string{stage}
+
+	p.GitLabCIStages = map[string]GitLabCIStage{
+		"kpt": {
+			Stage:    stage,
+			Image:    "docker",
+			Services: []string{"docker:dind"},
+			Script:   p.generateScript(config),
+		},
+	}
+
+	return p
+}
+
+func (p *GitLabCI) Generate() (out []byte, err error) {
+	return yaml.Marshal(p)
+}
+
+func (p *GitLabCI) generateScript(config *types.PipelineConfig) (script string) {
+	mountDir := "/app"
+	fnPaths := []string{"--fn-path"}
+
+	for _, p := range config.FnPaths {
+		// p is preprocessed in ExportRunner and guaranteed to be a relative path.
+		fnPaths = append(fnPaths, path.Join(mountDir, p))
+	}
+
+	parts := []string{
+		"docker run",
+		fmt.Sprintf("-v $PWD:%s", mountDir),
+		"-v /var/run/docker.sock:/var/run/docker.sock",
+		KptImage,
+		"fn run",
+		path.Join(mountDir, config.Dir),
+	}
+
+	if len(config.FnPaths) > 0 {
+		parts = append(parts, fnPaths...)
+	}
+
+	script = strings.Join(parts, " ")
+
+	return
+}

internal/cmdexport/orchestrators/gitlabci_test.go

@@ -0,0 +1,63 @@
+// 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 orchestrators
+
+import "github.com/GoogleContainerTools/kpt/internal/cmdexport/types"
+
+var gitlabCITestCases = []testCase{
+	{
+		description: "generate a GitLab CI pipeline against the current directory",
+		config: &types.PipelineConfig{
+			Dir: ".",
+		},
+		expected: `
+stages:
+  - run-kpt-functions
+kpt:
+    stage: run-kpt-functions
+    image: docker
+    services:
+      - docker:dind
+    script: docker run -v $PWD:/app -v /var/run/docker.sock:/var/run/docker.sock gongpu/kpt:latest
+        fn run /app
+`,
+	},
+	{
+		description: "generate a GitLab CI pipeline with --fn-path",
+		config: &types.PipelineConfig{
+			Dir: "resources",
+			FnPaths: []string{
+				"config/label-namespace.yaml",
+				"config/application-cr.yaml",
+			},
+		},
+		expected: `
+stages:
+  - run-kpt-functions
+kpt:
+    stage: run-kpt-functions
+    image: docker
+    services:
+      - docker:dind
+    script: docker run -v $PWD:/app -v /var/run/docker.sock:/var/run/docker.sock gongpu/kpt:latest
+        fn run /app/resources --fn-path /app/config/label-namespace.yaml /app/config/application-cr.yaml
+`,
+	},
+}
+
+var gitlabCITestSuite = testSuite{
+	pipeline:  new(GitLabCI),
+	testCases: gitlabCITestCases,
+}

internal/cmdexport/orchestrators/pipeline_test.go

@@ -37,6 +37,7 @@ func TestPipeline(t *testing.T) {
 	testSuites := []testSuite{
 		githubActionsTestSuite,
 		cloudBuildTestSuite,
+		gitlabCITestSuite,
 	}
 
 	for _, testSuite := range testSuites {