From a6bec1f400564b8c599fc47b09f99529711235d1 Mon Sep 17 00:00:00 2001
From: Dan Anglin <daangling@gmail.com>
Date: Sat, 20 May 2023 05:48:22 +0100
Subject: [PATCH] ci: add cache and named pipelines

---
 internal/build/{dagger.go => build.go} |  5 ++++-
 internal/build/stages.go               | 25 +++++++++++++++----------
 2 files changed, 19 insertions(+), 11 deletions(-)
 rename internal/build/{dagger.go => build.go} (85%)

diff --git a/internal/build/dagger.go b/internal/build/build.go
similarity index 85%
rename from internal/build/dagger.go
rename to internal/build/build.go
index d802199..644702b 100644
--- a/internal/build/dagger.go
+++ b/internal/build/build.go
@@ -26,6 +26,9 @@ func run(ctx context.Context) error {
 	}
 	defer client.Close()
 
+	client = client.Pipeline("Greet Build Pipeline")
+	cache := client.CacheVolume("go-mod-cache")
+
 	projectRoot, err := filepath.Abs("../..")
 	if err != nil {
 		return fmt.Errorf("unable to get the project's root directory, %w", err)
@@ -45,7 +48,7 @@ func run(ctx context.Context) error {
 	}
 
 	for i := range stages {
-		if err := stages[i].run(ctx, client); err != nil {
+		if err := stages[i].run(ctx, client, cache); err != nil {
 			return fmt.Errorf("error running pipeline; %w", err)
 		}
 	}
diff --git a/internal/build/stages.go b/internal/build/stages.go
index a42cd42..e750918 100644
--- a/internal/build/stages.go
+++ b/internal/build/stages.go
@@ -1,30 +1,33 @@
 package main
 
 import (
-	"log"
 	"context"
 	"fmt"
+	"log"
+
 	"dagger.io/dagger"
 )
 
 type stage struct {
 	name        string
 	projectRoot string
-	stageFunc   func(ctx context.Context, client *dagger.Client, projectRoot string) error
+	stageFunc   func(ctx context.Context, client *dagger.Client, projectRoot string, cache *dagger.CacheVolume) error
 }
 
-func (s *stage) run(ctx context.Context, client *dagger.Client) error {
+func (s *stage) run(ctx context.Context, client *dagger.Client, cache *dagger.CacheVolume) error {
 	log.Printf("Running stage: %s", s.name)
 
-	if err := s.stageFunc(ctx, client, s.projectRoot); err != nil {
+	pipeline := client.Pipeline(s.name)
+
+	if err := s.stageFunc(ctx, pipeline, s.projectRoot, cache); err != nil {
 		return fmt.Errorf("error running stage '%s'; %w", s.name, err)
 	}
 
 	return nil
 }
 
-// test is a stage that runs the test suite using mage
-func test(ctx context.Context, client *dagger.Client, projectRoot string) error {
+// test is a stage that runs the test suite using mage.
+func test(ctx context.Context, client *dagger.Client, projectRoot string, cache *dagger.CacheVolume) error {
 	image := "golang:1.20.4"
 	containerWorkspace := "/workspace"
 	containerWorkdir := containerWorkspace + "/internal/build"
@@ -35,15 +38,16 @@ func test(ctx context.Context, client *dagger.Client, projectRoot string) error
 		WithWorkdir(containerWorkdir).
 		WithEnvVariable("GO_TEST_VERBOSE", "1").
 		WithEnvVariable("GO_TEST_COVER", "1").
-		WithExec([]string{"go", "run", "magefiles/main.go", "-v", "test"})
+		WithExec([]string{"go", "run", "magefiles/main.go", "-v", "test"}).
+		WithMountedCache("/go/pkg/mod", cache)
 
 	_, err := runner.Stdout(ctx)
 
 	return err
 }
 
-// lint is a stage that runs the linter using mage
-func lint(ctx context.Context, client *dagger.Client, projectRoot string) error {
+// lint is a stage that runs the linter using mage.
+func lint(ctx context.Context, client *dagger.Client, projectRoot string, cache *dagger.CacheVolume) error {
 	image := "golangci/golangci-lint:v1.52.2-alpine"
 	containerWorkspace := "/workspace"
 	containerWorkdir := containerWorkspace + "/internal/build"
@@ -52,7 +56,8 @@ func lint(ctx context.Context, client *dagger.Client, projectRoot string) error
 		From(image).
 		WithMountedDirectory(containerWorkspace, client.Host().Directory(projectRoot)).
 		WithWorkdir(containerWorkdir).
-		WithExec([]string{"go", "run", "magefiles/main.go", "-v", "lint"})
+		WithExec([]string{"go", "run", "magefiles/main.go", "-v", "lint"}).
+		WithMountedCache("/go/pkg/mod", cache)
 
 	_, err := runner.Stdout(ctx)