From 107c1cdb09c575aa2f61d97f48d8587eb6bada4c Mon Sep 17 00:00:00 2001
From: Nathan Dench <ndenc2@gmail.com>
Date: Fri, 24 May 2019 15:16:44 +1000
Subject: Upgrade to 0.12

---
 vendor/github.com/hashicorp/go-getter/get_gcs.go | 172 +++++++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 vendor/github.com/hashicorp/go-getter/get_gcs.go

(limited to 'vendor/github.com/hashicorp/go-getter/get_gcs.go')

diff --git a/vendor/github.com/hashicorp/go-getter/get_gcs.go b/vendor/github.com/hashicorp/go-getter/get_gcs.go
new file mode 100644
index 0000000..6faa70f
--- /dev/null
+++ b/vendor/github.com/hashicorp/go-getter/get_gcs.go
@@ -0,0 +1,172 @@
+package getter
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"cloud.google.com/go/storage"
+	"google.golang.org/api/iterator"
+)
+
+// GCSGetter is a Getter implementation that will download a module from
+// a GCS bucket.
+type GCSGetter struct {
+	getter
+}
+
+func (g *GCSGetter) ClientMode(u *url.URL) (ClientMode, error) {
+	ctx := g.Context()
+
+	// Parse URL
+	bucket, object, err := g.parseURL(u)
+	if err != nil {
+		return 0, err
+	}
+
+	client, err := storage.NewClient(ctx)
+	if err != nil {
+		return 0, err
+	}
+	iter := client.Bucket(bucket).Objects(ctx, &storage.Query{Prefix: object})
+	for {
+		obj, err := iter.Next()
+		if err != nil && err != iterator.Done {
+			return 0, err
+		}
+
+		if err == iterator.Done {
+			break
+		}
+		if strings.HasSuffix(obj.Name, "/") {
+			// A directory matched the prefix search, so this must be a directory
+			return ClientModeDir, nil
+		} else if obj.Name != object {
+			// A file matched the prefix search and doesn't have the same name
+			// as the query, so this must be a directory
+			return ClientModeDir, nil
+		}
+	}
+	// There are no directories or subdirectories, and if a match was returned,
+	// it was exactly equal to the prefix search. So return File mode
+	return ClientModeFile, nil
+}
+
+func (g *GCSGetter) Get(dst string, u *url.URL) error {
+	ctx := g.Context()
+
+	// Parse URL
+	bucket, object, err := g.parseURL(u)
+	if err != nil {
+		return err
+	}
+
+	// Remove destination if it already exists
+	_, err = os.Stat(dst)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	if err == nil {
+		// Remove the destination
+		if err := os.RemoveAll(dst); err != nil {
+			return err
+		}
+	}
+
+	// Create all the parent directories
+	if err := os.MkdirAll(filepath.Dir(dst), 0755); err != nil {
+		return err
+	}
+
+	client, err := storage.NewClient(ctx)
+	if err != nil {
+		return err
+	}
+
+	// Iterate through all matching objects.
+	iter := client.Bucket(bucket).Objects(ctx, &storage.Query{Prefix: object})
+	for {
+		obj, err := iter.Next()
+		if err != nil && err != iterator.Done {
+			return err
+		}
+		if err == iterator.Done {
+			break
+		}
+
+		if !strings.HasSuffix(obj.Name, "/") {
+			// Get the object destination path
+			objDst, err := filepath.Rel(object, obj.Name)
+			if err != nil {
+				return err
+			}
+			objDst = filepath.Join(dst, objDst)
+			// Download the matching object.
+			err = g.getObject(ctx, client, objDst, bucket, obj.Name)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (g *GCSGetter) GetFile(dst string, u *url.URL) error {
+	ctx := g.Context()
+
+	// Parse URL
+	bucket, object, err := g.parseURL(u)
+	if err != nil {
+		return err
+	}
+
+	client, err := storage.NewClient(ctx)
+	if err != nil {
+		return err
+	}
+	return g.getObject(ctx, client, dst, bucket, object)
+}
+
+func (g *GCSGetter) getObject(ctx context.Context, client *storage.Client, dst, bucket, object string) error {
+	rc, err := client.Bucket(bucket).Object(object).NewReader(ctx)
+	if err != nil {
+		return err
+	}
+	defer rc.Close()
+
+	// Create all the parent directories
+	if err := os.MkdirAll(filepath.Dir(dst), 0755); err != nil {
+		return err
+	}
+
+	f, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	_, err = Copy(ctx, f, rc)
+	return err
+}
+
+func (g *GCSGetter) parseURL(u *url.URL) (bucket, path string, err error) {
+	if strings.Contains(u.Host, "googleapis.com") {
+		hostParts := strings.Split(u.Host, ".")
+		if len(hostParts) != 3 {
+			err = fmt.Errorf("URL is not a valid GCS URL")
+			return
+		}
+
+		pathParts := strings.SplitN(u.Path, "/", 5)
+		if len(pathParts) != 5 {
+			err = fmt.Errorf("URL is not a valid GCS URL")
+			return
+		}
+		bucket = pathParts[3]
+		path = pathParts[4]
+	}
+	return
+}
-- 
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