add uaread tool

opcua/tools.py

@@ -0,0 +1,87 @@
+import logging
+import os
+import sys
+import argparse
+from opcua import ua, Client
+
+
+def add_common_args(parser, nodeid_required=True):
+    parser.add_argument("-u",
+                        "--url",
+                        help="URL of OPC UA server (for example: opc.tcp://example.org:4840)",
+                        default='opc.tcp://localhost:4841',
+                        metavar="URL")
+    parser.add_argument("-n",
+                        "--nodeid",
+                        help="Fully-qualified node ID (for example: i=85). Default: root node",
+                        default='i=84',
+                        required=nodeid_required,
+                        #required=True,
+                        metavar="NODE")
+    parser.add_argument("-p",
+                        "--path",
+                        help="Comma separated browse path to the node starting at nodeid (for example: 3:Mybject,3:MyVariable)",
+                        default='',
+                        metavar="BROWSEPATH")
+    parser.add_argument("-i",
+                        "--namespace",
+                        help="Default namespace",
+                        type=int,
+                        default=0,
+                        metavar="NAMESPACE")
+
+    parser.add_argument("-v",
+                        "--verbose",
+                        dest="loglevel",
+                        choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
+                        default='WARNING',
+                        help="Set log level")
+
+
+def get_node(client, args):
+    node = client.get_node(args.nodeid)
+    if args.path:
+        node = node.get_child(args.path.split(","))
+
+
+def uaread():
+    parser = argparse.ArgumentParser(description="Read attribute of a node")
+    add_common_args(parser)
+    parser.add_argument("-a",
+                        "--attribute",
+                        dest="attribute",
+                        type=int,
+                        #default="VALUE",
+                        #choices=['VALUE', 'NODEID', 'BROWSENAME', 'ERROR', 'CRITICAL'],
+                        default=ua.AttributeIds.Value,
+                        help="Set attribute to read")
+    parser.add_argument("-t",
+                        "--datatype",
+                        dest="datatype",
+                        default="python",
+                        choices=['python', 'variant', 'datavalue'],
+                        help="Data type to return")
+
+    args = parser.parse_args()
+    logging.basicConfig(format="%(levelname)s: %(message)s", level=getattr(logging, args.loglevel))
+
+    client = Client(args.url)
+    client.connect()
+    try:
+        node = client.get_node(args.nodeid)
+        if args.path:
+            node = node.get_child(args.path.split(","))
+        attr = node.get_attribute(args.attribute)
+        if args.datatype == "python":
+            print(attr.Value.Value)
+        elif args.datatype == "variant":
+            print(attr.Value)
+        else:
+            print(attr)
+    finally:
+        client.disconnect()
+    sys.exit(0)
+    print(args)
+
+
+

setup.py

@@ -8,26 +8,28 @@
 else:
     install_requires = []
 
-setup(
-        name = "freeopcua", 
-        version = "0.9.12",
-        description = "Pure Python OPC-UA client and server library",
-        author = "Olivier Roulet-Dubonnet",
-        author_email = "olivier.roulet@gmail.com",
-        url = 'http://freeopcua.github.io/',
-        packages = ["opcua"],
-        provides = ["opcua"],
-        license = "GNU Lesser General Public License",
-        install_requires = install_requires,
-        classifiers = [
-            "Programming Language :: Python",
-            "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 2",
-            "Development Status :: 4 - Beta",
-            "Intended Audience :: Developers",
-            "Operating System :: OS Independent",
-            "Topic :: Software Development :: Libraries :: Python Modules",
-        ]
-    )
+setup(name="freeopcua", 
+      version="0.9.12",
+      description="Pure Python OPC-UA client and server library",
+      author="Olivier Roulet-Dubonnet",
+      author_email="olivier.roulet@gmail.com",
+      url='http://freeopcua.github.io/',
+      packages=["opcua"],
+      provides=["opcua"],
+      license="GNU Lesser General Public License",
+      install_requires=install_requires,
+      classifiers=[
+                   "Programming Language :: Python",
+                   "Programming Language :: Python :: 3",
+                   "Programming Language :: Python :: 2",
+                   "Development Status :: 4 - Beta",
+                   "Intended Audience :: Developers",
+                   "Operating System :: OS Independent",
+                   "Topic :: Software Development :: Libraries :: Python Modules",
+                   ]
+       entry_points={'console_scripts': 
+                     ['uaread = opcua.uaread']
+                    }
+      )
 
 

tools/uaread

@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+import sys
+import os
+sys.path.append(os.path.join(os.path.dirname(os.path.realpath(__file__)), ".."))
+
+from opcua.tools import uaread
+
+
+if __name__ == "__main__":
+    uaread()