Minor fix for DatasetCache param validation

mindspore/ccsrc/minddata/dataset/engine/cache/cache_client.cc

@@ -46,8 +46,8 @@ Status CacheClient::Builder::SanityCheck() {
   CHECK_FAIL_RETURN_UNEXPECTED(num_connections_ > 0, "rpc connections must be positive");
   CHECK_FAIL_RETURN_UNEXPECTED(prefetch_size_ > 0, "prefetch size must be positive");
   CHECK_FAIL_RETURN_UNEXPECTED(!hostname_.empty(), "hostname must not be empty");
-  CHECK_FAIL_RETURN_UNEXPECTED(port_ > 0, "port must be positive");
-  CHECK_FAIL_RETURN_UNEXPECTED(port_ <= 65535, "illegal port number");
+  CHECK_FAIL_RETURN_UNEXPECTED(port_ > 1024, "Port must be in range (1025..65535)");
+  CHECK_FAIL_RETURN_UNEXPECTED(port_ <= 65535, "Port must be in range (1025..65535)");
   CHECK_FAIL_RETURN_UNEXPECTED(hostname_ == "127.0.0.1",
                                "now cache client has to be on the same host with cache server");
   return Status::OK();

mindspore/dataset/engine/cache_client.py

@@ -18,7 +18,7 @@
 import copy
 from mindspore._c_dataengine import CacheClient
 
-from ..core.validator_helpers import type_check, check_uint32, check_uint64
+from ..core.validator_helpers import type_check, check_uint32, check_uint64, check_positive, check_value
 
 
 class DatasetCache:
@@ -29,8 +29,20 @@ class DatasetCache:
     def __init__(self, session_id=None, size=0, spilling=False, hostname=None, port=None, num_connections=None,
                  prefetch_size=None):
         check_uint32(session_id, "session_id")
-        check_uint64(size, "size")
+        type_check(size, (int,), "size")
+        if size != 0:
+            check_positive(size, "size")
+            check_uint64(size, "size")
         type_check(spilling, (bool,), "spilling")
+        if hostname is not None:
+            type_check(hostname, (str,), "hostname")
+        if port is not None:
+            type_check(port, (int,), "port")
+            check_value(port, (1025, 65535), "port")
+        if num_connections is not None:
+            check_uint32(num_connections, "num_connections")
+        if prefetch_size is not None:
+            check_uint32(prefetch_size, "prefetch_size")
 
         self.session_id = session_id
         self.size = size

tests/ut/python/dataset/test_cache_map.py

@@ -550,7 +550,7 @@ def test_cache_map_parameter_check():
 
     with pytest.raises(ValueError) as info:
         ds.DatasetCache(session_id=1, size=-1, spilling=True)
-    assert "Input is not within the required interval" in str(info.value)
+    assert "Input size must be greater than 0" in str(info.value)
 
     with pytest.raises(TypeError) as info:
         ds.DatasetCache(session_id=1, size="1", spilling=True)
@@ -564,6 +564,10 @@ def test_cache_map_parameter_check():
         ds.DatasetCache(session_id=1, size=0, spilling="illegal")
     assert "Argument spilling with value illegal is not of type (<class 'bool'>,)" in str(info.value)
 
+    with pytest.raises(TypeError) as err:
+        ds.DatasetCache(session_id=1, size=0, spilling=True, hostname=50052)
+    assert "Argument hostname with value 50052 is not of type (<class 'str'>,)" in str(err.value)
+
     with pytest.raises(RuntimeError) as err:
         ds.DatasetCache(session_id=1, size=0, spilling=True, hostname="illegal")
     assert "Unexpected error. now cache client has to be on the same host with cache server" in str(err.value)
@@ -574,19 +578,19 @@ def test_cache_map_parameter_check():
 
     with pytest.raises(TypeError) as info:
         ds.DatasetCache(session_id=1, size=0, spilling=True, port="illegal")
-    assert "incompatible constructor arguments" in str(info.value)
+    assert "Argument port with value illegal is not of type (<class 'int'>,)" in str(info.value)
 
     with pytest.raises(TypeError) as info:
         ds.DatasetCache(session_id=1, size=0, spilling=True, port="50052")
-    assert "incompatible constructor arguments" in str(info.value)
+    assert "Argument port with value 50052 is not of type (<class 'int'>,)" in str(info.value)
 
-    with pytest.raises(RuntimeError) as err:
+    with pytest.raises(ValueError) as err:
         ds.DatasetCache(session_id=1, size=0, spilling=True, port=0)
-    assert "Unexpected error. port must be positive" in str(err.value)
+    assert "Input port is not within the required interval of (1025 to 65535)" in str(err.value)
 
-    with pytest.raises(RuntimeError) as err:
+    with pytest.raises(ValueError) as err:
         ds.DatasetCache(session_id=1, size=0, spilling=True, port=65536)
-    assert "Unexpected error. illegal port number" in str(err.value)
+    assert "Input port is not within the required interval of (1025 to 65535)" in str(err.value)
 
     with pytest.raises(TypeError) as err:
         ds.ImageFolderDataset(dataset_dir=DATA_DIR, cache=True)