Update Sample Task Instruction

Examples/Sample Tasks with Python/service_invoke.py

@@ -0,0 +1,42 @@
+# -*- coding: utf-8 -*-
+from base64 import encode
+import json
+import os
+
+
+def queryService(id):
+    with open("tasks/%d.json" % id, "r", encoding='utf-8') as f:
+        service = json.loads(f.read())
+    return service
+
+
+def invokeService(id, data):
+    service = queryService(id)
+    try:
+        service["links"] = data["urlList_0"]
+    except:
+        pass
+    for key, value in data.items():
+        for i in range(len(service["inputParameters"])):
+            if key == service["inputParameters"][i]["name"]:  # 能调用
+                nodeId = int(service["inputParameters"][i]["nodeId"])
+                node = service["graph"][nodeId]
+                if node["option"] == 1:
+                    node["parameters"]["links"] = value
+                elif node["option"] == 4:
+                    node["parameters"]["value"] = value
+                elif node["option"] == 8 and node["parameters"]["loopType"] == 0:
+                    # print("loopType 0", value)
+                    node["parameters"]["exitCount"] = int(value)
+                    # print(node)
+                elif node["option"] == 8:
+                    node["parameters"]["textList"] = value
+                break
+
+    count = len(os.listdir("tasks")) + 1
+    service["id"] = count  # 修改id
+    print(count)
+    with open("execution_instances/%d.json" % count, "w", encoding='utf-8') as f:
+        s = json.dumps(service, ensure_ascii=False)
+        f.write(s)
+    return count