switch to use internal gcscache

README.md

@@ -111,10 +111,12 @@ enabled using the `-cache` flag.  It supports the following values:
    are documented in the [aws-sdk-go session
    package](https://docs.aws.amazon.com/sdk-for-go/api/aws/session/)).
  - gcs URL (e.g. `gcs://bucket-name/optional-path-prefix`) - will cache images
-   on Google Cloud Storage.  This requires `GCP_PRIVATE_KEY` environmental
-   variable be set.
+   on Google Cloud Storage. Authentication is documented in Google's
+   [Application Default Credentials
+   docs](https://cloud.google.com/docs/authentication/production#providing_credentials_to_your_application).
  - azure URL (e.g. `azure://container-name/`) - will cache images on
    Azure Storage.  This requires `AZURESTORAGE_ACCOUNT_NAME` and
+   `AZURESTORAGE_ACCESS_KEY` environment variables to bet set.
  - redis URL (e.g. `redis://hostname/`) - will cache images on
    the specified redis host. The full URL syntax is defined by the [redis URI
    registration](https://www.iana.org/assignments/uri-schemes/prov/redis).

cmd/imageproxy/main.go

@@ -30,12 +30,12 @@ import (
 	"github.com/PaulARoy/azurestoragecache"
 	"github.com/die-net/lrucache"
 	"github.com/die-net/lrucache/twotier"
-	"github.com/diegomarangoni/gcscache"
 	"github.com/garyburd/redigo/redis"
 	"github.com/gregjones/httpcache/diskcache"
 	rediscache "github.com/gregjones/httpcache/redis"
 	"github.com/peterbourgon/diskv"
 	"willnorris.com/go/imageproxy"
+	"willnorris.com/go/imageproxy/internal/gcscache"
 	"willnorris.com/go/imageproxy/internal/s3cache"
 )
 
@@ -142,7 +142,7 @@ func parseCache(c string) (imageproxy.Cache, error) {
 	case "azure":
 		return azurestoragecache.New("", "", u.Host)
 	case "gcs":
-		return gcscache.New(u.String()), nil
+		return gcscache.New(u.Host, strings.TrimPrefix(u.Path, "/"))
 	case "memory":
 		return lruCache(u.Opaque)
 	case "redis":