Use `credentials` instead of `keyfile` in GCS sevice

The `keyfile` was renamed to `credentials` in `google-cloud-storage` 1.8.0.
https://github.com/GoogleCloudPlatform/google-cloud-ruby/blob/master/google-cloud-storage/CHANGELOG.md#180--2017-11-14

Although `keyfile` can still be used, but it looks like deprecate.
https://github.com/GoogleCloudPlatform/google-cloud-ruby/blob/ddf7b2a856d676316525eb581c1a4cc83ca6097b/google-cloud-storage/lib/google/cloud/storage.rb#L589...L590

Therefore, I think that should use `credentials` in newly generated
applications.

Ref: https://github.com/GoogleCloudPlatform/google-cloud-ruby/issues/1802

5 files changed, 23 insertions, 21 deletions

diff --git a/Gemfile b/Gemfile
index 3c26d1eb18..32ec87b501 100644
--- a/Gemfile
+++ b/Gemfile
@@ -92,7 +92,7 @@ end
 # Active Storage
 group :storage do
   gem "aws-sdk-s3", require: false
-  gem "google-cloud-storage", "~> 1.3", require: false
+  gem "google-cloud-storage", "~> 1.8", require: false
   gem "azure-storage", require: false
 
   gem "mini_magick"
diff --git a/Gemfile.lock b/Gemfile.lock
index 70c4097798..1453bddb34 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -118,8 +118,8 @@ GEM
     activerecord-jdbcsqlite3-adapter (1.3.24)
       activerecord-jdbc-adapter (~> 1.3.24)
       jdbc-sqlite3 (>= 3.7.2, < 3.9)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     amq-protocol (2.2.0)
     archive-zip (0.7.0)
       io-like (~> 0.3.0)
@@ -209,7 +209,7 @@ GEM
     daemons (1.2.4)
     dalli (2.7.6)
     dante (0.2.0)
-    declarative (0.0.9)
+    declarative (0.0.10)
     declarative-option (0.1.0)
     delayed_job (4.1.3)
       activesupport (>= 3.0, < 5.2)
@@ -252,25 +252,25 @@ GEM
     ffi (1.9.18-x86-mingw32)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
-    google-api-client (0.13.1)
+    google-api-client (0.17.3)
       addressable (~> 2.5, >= 2.5.1)
-      googleauth (~> 0.5)
+      googleauth (>= 0.5, < 0.7.0)
       httpclient (>= 2.8.1, < 3.0)
       mime-types (~> 3.0)
       representable (~> 3.0)
       retriable (>= 2.0, < 4.0)
-    google-cloud-core (1.0.0)
+    google-cloud-core (1.1.0)
       google-cloud-env (~> 1.0)
-      googleauth (~> 0.5.1)
     google-cloud-env (1.0.1)
       faraday (~> 0.11)
-    google-cloud-storage (1.4.0)
+    google-cloud-storage (1.9.0)
       digest-crc (~> 0.4)
-      google-api-client (~> 0.13.0)
-      google-cloud-core (~> 1.0)
-    googleauth (0.5.3)
+      google-api-client (~> 0.17.0)
+      google-cloud-core (~> 1.1)
+      googleauth (~> 0.6.2)
+    googleauth (0.6.2)
       faraday (~> 0.12)
-      jwt (~> 1.4)
+      jwt (>= 1.4, < 3.0)
       logging (~> 2.0)
       memoist (~> 0.12)
       multi_json (~> 1.11)
@@ -289,7 +289,7 @@ GEM
     jmespath (1.3.1)
     json (2.1.0)
     json (2.1.0-java)
-    jwt (1.5.6)
+    jwt (2.1.0)
     kindlerb (1.2.0)
       mustache
       nokogiri
@@ -329,7 +329,7 @@ GEM
     msgpack (1.1.0-java)
     msgpack (1.1.0-x64-mingw32)
     msgpack (1.1.0-x86-mingw32)
-    multi_json (1.12.1)
+    multi_json (1.12.2)
     multipart-post (2.0.0)
     mustache (1.0.5)
     mustermann (1.0.0)
@@ -354,7 +354,7 @@ GEM
     pg (0.19.0-x86-mingw32)
     powerpack (0.1.1)
     psych (2.2.4)
-    public_suffix (2.0.5)
+    public_suffix (3.0.1)
     puma (3.9.1)
     puma (3.9.1-java)
     que (0.14.0)
@@ -429,10 +429,10 @@ GEM
       rack-protection (>= 1.5.0)
       redis (>= 3.3.4, < 5)
     sigdump (0.2.4)
-    signet (0.7.3)
+    signet (0.8.1)
       addressable (~> 2.3)
       faraday (~> 0.9)
-      jwt (~> 1.5)
+      jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
     sinatra (2.0.0)
       mustermann (~> 1.0)
@@ -517,7 +517,7 @@ DEPENDENCIES
   dalli (>= 2.2.1)
   delayed_job
   delayed_job_active_record
-  google-cloud-storage (~> 1.3)
+  google-cloud-storage (~> 1.8)
   hiredis
   json (>= 2.0.0)
   kindlerb (~> 1.2.0)
diff --git a/activestorage/lib/active_storage/service/gcs_service.rb b/activestorage/lib/active_storage/service/gcs_service.rb
index be6ddf32a0..fd9916634a 100644
--- a/activestorage/lib/active_storage/service/gcs_service.rb
+++ b/activestorage/lib/active_storage/service/gcs_service.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+gem "google-cloud-storage", "~> 1.8"
+
 require "google/cloud/storage"
 require "active_support/core_ext/object/to_query"
 
diff --git a/activestorage/test/service/configurations.example.yml b/activestorage/test/service/configurations.example.yml
index 56ed37be5d..43cc013bc8 100644
--- a/activestorage/test/service/configurations.example.yml
+++ b/activestorage/test/service/configurations.example.yml
@@ -7,7 +7,7 @@
 #
 # gcs:
 #   service: GCS
-#   keyfile: {
+#   credentials: {
 #     type: "service_account",
 #     project_id: "",
 #     private_key_id: "",
diff --git a/railties/lib/rails/generators/rails/app/templates/config/storage.yml.tt b/railties/lib/rails/generators/rails/app/templates/config/storage.yml.tt
index 9bada4b66d..1c0cde0b09 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/storage.yml.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/storage.yml.tt
@@ -18,7 +18,7 @@ local:
 # google:
 #   service: GCS
 #   project: your_project
-#   keyfile: <%%= Rails.root.join("path/to/gcs.keyfile") %>
+#   credentials: <%%= Rails.root.join("path/to/gcs.keyfile") %>
 #   bucket: your_own_bucket
 
 # Use rails credentials:edit to set the Azure Storage secret (as azure_storage:storage_access_key)