Update to use https for http file system test also registers https file system (#1357)

* Update to use https for http file system test also registers https file system

The http test is failing as apache switched to use https for license page.

This PR makes adjustment to fix the issue.

Signed-off-by: Yong Tang <[email protected]>

* Update README.md to use https

Signed-off-by: Yong Tang <[email protected]>

Author: yongtang

README.md

@@ -24,9 +24,11 @@ import tensorflow as tf
 import tensorflow_io as tfio
 
 # Read the MNIST data into the IODataset.
+dataset_url = "https://storage.googleapis.com/cvdf-datasets/mnist/"
 d_train = tfio.IODataset.from_mnist(
-    'http://yann.lecun.com/exdb/mnist/train-images-idx3-ubyte.gz',
-    'http://yann.lecun.com/exdb/mnist/train-labels-idx1-ubyte.gz')
+    dataset_url + "train-images-idx3-ubyte.gz",
+    dataset_url + "train-labels-idx1-ubyte.gz",
+)
 
 # Shuffle the elements of the dataset.
 d_train = d_train.shuffle(buffer_size=1024)
@@ -56,7 +58,7 @@ model.fit(d_train, epochs=5, steps_per_epoch=200)
 
 In the above [MNIST](http://yann.lecun.com/exdb/mnist/) example, the URL's
 to access the dataset files are passed directly to the `tfio.IODataset.from_mnist` API call.
-This is due to the inherent support that `tensorflow-io` provides for the `HTTP` file system,
+This is due to the inherent support that `tensorflow-io` provides for `HTTP`/`HTTPS` file system,
 thus eliminating the need for downloading and saving datasets on a local directory.
 
 NOTE: Since `tensorflow-io` is able to detect and uncompress the MNIST dataset automatically if needed,

tensorflow_io/core/plugins/file_system_plugins.cc

@@ -18,15 +18,16 @@ limitations under the License.
 void TF_InitPlugin(TF_FilesystemPluginInfo* info) {
   info->plugin_memory_allocate = tensorflow::io::plugin_memory_allocate;
   info->plugin_memory_free = tensorflow::io::plugin_memory_free;
-  info->num_schemes = 7;
+  info->num_schemes = 8;
   info->ops = static_cast<TF_FilesystemPluginOps*>(
       tensorflow::io::plugin_memory_allocate(info->num_schemes *
                                              sizeof(info->ops[0])));
   tensorflow::io::az::ProvideFilesystemSupportFor(&info->ops[0], "az");
   tensorflow::io::http::ProvideFilesystemSupportFor(&info->ops[1], "http");
-  tensorflow::io::s3::ProvideFilesystemSupportFor(&info->ops[2], "s3e");
-  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[3], "hdfse");
-  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[4], "viewfse");
-  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[5], "hare");
-  tensorflow::io::gs::ProvideFilesystemSupportFor(&info->ops[6], "gse");
+  tensorflow::io::http::ProvideFilesystemSupportFor(&info->ops[2], "https");
+  tensorflow::io::s3::ProvideFilesystemSupportFor(&info->ops[3], "s3e");
+  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[4], "hdfse");
+  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[5], "viewfse");
+  tensorflow::io::hdfs::ProvideFilesystemSupportFor(&info->ops[6], "hare");
+  tensorflow::io::gs::ProvideFilesystemSupportFor(&info->ops[7], "gse");
 }

tests/test_http_eager.py

@@ -28,7 +28,7 @@ def __init__(self, methodName="runTest"):  # pylint: disable=invalid-name
         self.local_path = os.path.join(
             os.path.dirname(os.path.abspath(__file__)), "test_http", "LICENSE-2.0.txt"
         )
-        self.remote_filename = "http://www.apache.org/licenses/LICENSE-2.0.txt"
+        self.remote_filename = "https://www.apache.org/licenses/LICENSE-2.0.txt"
         super().__init__(methodName)
 
     def setUp(self):  # pylint: disable=invalid-name