| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You 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. |
| |
| |
| def file_exists(node, file): |
| """Quick and dirty check for existence of remote file.""" |
| try: |
| node.account.ssh("cat " + file, allow_fail=False) |
| return True |
| except: |
| return False |
| |
| |
| def line_count(node, file): |
| """Return the line count of file on node""" |
| out = [line for line in node.account.ssh_capture("wc -l %s" % file)] |
| if len(out) != 1: |
| raise Exception("Expected single line of output from wc -l") |
| |
| return int(out[0].strip().split(" ")[0]) |
