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stock_list_demo.py
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stock_list_demo.py
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#!/usr/bin/python
# Copyright (c) Lightstreamer Srl.
#
# 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.
from lightstreamer.client import *
from subscription_listener import *
def wait_for_input():
input("{0:-^80}\n".format("HIT CR TO UNSUBSCRIBE AND DISCONNECT FROM LIGHTSTREAMER"))
loggerProvider = ConsoleLoggerProvider(ConsoleLogLevel.WARN)
LightstreamerClient.setLoggerProvider(loggerProvider)
# Establishing a new connection to Lightstreamer Server
# lightstreamer_client = LightstreamerClient("http://localhost:8080", "DEMO")
lightstreamer_client = LightstreamerClient("http://push.lightstreamer.com", "DEMO")
lightstreamer_client.connect()
# Making a new Subscription in MERGE mode
subscription = Subscription(
mode="MERGE",
items=["item1", "item2", "item3", "item4",
"item5", "item6", "item7", "item8",
"item9", "item10", "item11", "item12"],
fields=["stock_name", "last_price", "time", "bid", "ask"])
subscription.setDataAdapter("QUOTE_ADAPTER")
# Adding the subscription listener to get notifications about new updates
subscription.addListener(SubListener())
# Registering the Subscription
lightstreamer_client.subscribe(subscription)
wait_for_input()
# Unsubscribing from Lightstreamer by using the subscription as key
lightstreamer_client.unsubscribe(subscription)
# Disconnecting
lightstreamer_client.disconnect()