Add ray example (#262)

examples/ray/ray_data_demo.py

@@ -0,0 +1,63 @@
+# ByteDance Volcengine EMR, Copyright 2024.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# prepare:
+# pip install "ray[data]"
+
+import ray
+import logging
+from tosfs.core import TosFileSystem
+
+# csv file path
+input_csv_path = "tos://your-bucket/input.csv"
+output_csv_path = "tos://your-bucket/output.csv"
+
+# TOS AK
+ENV_AK = 'your ak'
+# TOS SK
+ENV_SK = 'your sk'
+# TOS ENDPOINT
+TOS_ENV_ENDPOINT = 'https://tos-cn-beijing.volces.com'
+
+ray.init(runtime_env={
+    "env_vars": {"RAY_LOGGING_LEVEL": "INFO"},
+    "pip": ["pyarrow", "tosfs"]
+})
+
+logging.basicConfig(level=logging.INFO)
+
+tos_fs = TosFileSystem(
+    key=ENV_AK,
+    secret=ENV_SK,
+    endpoint_url=TOS_ENV_ENDPOINT,
+    region='cn-beijing',
+    socket_timeout=60,
+    connection_timeout=60,
+    max_retry_num=30
+)
+
+
+if __name__ == "__main__":
+    # init: write a file to tos
+    with tos_fs.open(input_csv_path, 'w') as f:
+        f.write("id,name,age\n1,John Doe,30\n2,Jane Smith,25\n3,Bob Johnson,40\n")
+
+    ds = ray.data.read_csv(input_csv_path, filesystem=tos_fs)
+
+    # processing data
+    #ds = ds.map_batches(your_processing_function)
+
+    ds.repartition(1).write_csv(output_csv_path, filesystem=tos_fs)
+
+