Fixed GCS breaks due to APIs changes

Author: JohanMabille

environment-dev.yml

@@ -14,7 +14,7 @@ dependencies:
   - blosc
   - gdal
   - nlohmann_json
-  - google-cloud-cpp
+  - google-cloud-cpp >=3.0,<4
   - aws-sdk-cpp
   - xtensor=0.25.0
   - cpp-filesystem

include/xtensor-io/xio_gcs_handler.hpp

@@ -4,6 +4,7 @@
 #include <xtensor/xarray.hpp>
 #include <xtensor/xexpression.hpp>
 #include <google/cloud/storage/client.h>
+#include <google/cloud/credentials.h>
 #include "xfile_array.hpp"
 #include "xio_stream_wrapper.hpp"
 
@@ -43,7 +44,7 @@ namespace xt
 
     template <class C>
     xio_gcs_handler<C>::xio_gcs_handler()
-        : m_client(gcs::ClientOptions((gcs::oauth2::CreateAnonymousCredentials())))
+        : m_client(google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(google::cloud::MakeInsecureCredentials()))
     {
     }
 

test/test_xio_gcs_handler.cpp

@@ -12,6 +12,7 @@
 #include <exception>
 
 #include "gtest/gtest.h"
+#include <google/cloud/credentials.h>
 #include "xtensor-io/xio_gzip.hpp"
 #include "xtensor-io/xio_gcs_handler.hpp"
 
@@ -20,7 +21,10 @@ namespace xt
     TEST(xio_gcs_handler, read)
     {
         xio_gcs_handler<xio_gzip_config> h;
-        xio_gcs_config c = {gcs::Client((gcs::ClientOptions(gcs::oauth2::CreateAnonymousCredentials()))), "zarr-demo"};
+        xio_gcs_config c = {gcs::Client(google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
+            google::cloud::MakeInsecureCredentials())),
+            "zarr-demo"};
+
         h.configure_io(c);
         xarray<int32_t> a0;
         h.read(a0, "v3/test.zr3/data/root/arthur/dent/c0/0");