4 # Copyright (C) 2007 Google Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 # General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
22 """Utilities for QA tests.
30 from ganeti import utils
43 """Initializes the colour constants.
46 global _INFO_SEQ, _WARNING_SEQ, _ERROR_SEQ, _RESET_SEQ
48 # Don't use colours if stdout isn't a terminal
49 if not sys.stdout.isatty():
55 # Don't use colours if curses module can't be imported
60 _RESET_SEQ = curses.tigetstr("op")
62 setaf = curses.tigetstr("setaf")
63 _INFO_SEQ = curses.tparm(setaf, curses.COLOR_GREEN)
64 _WARNING_SEQ = curses.tparm(setaf, curses.COLOR_YELLOW)
65 _ERROR_SEQ = curses.tparm(setaf, curses.COLOR_RED)
71 def AssertIn(item, sequence):
72 """Raises an error when item is not in sequence.
75 if item not in sequence:
76 raise qa_error.Error('%r not in %r' % (item, sequence))
79 def AssertEqual(first, second):
80 """Raises an error when values aren't equal.
83 if not first == second:
84 raise qa_error.Error('%r == %r' % (first, second))
87 def AssertNotEqual(first, second):
88 """Raises an error when values are equal.
91 if not first != second:
92 raise qa_error.Error('%r != %r' % (first, second))
95 def GetSSHCommand(node, cmd, strict=True):
96 """Builds SSH command to be executed.
99 - node: Node the command should run on
100 - cmd: Command to be executed as a list with all parameters
101 - strict: Whether to enable strict host key checking
104 args = [ 'ssh', '-oEscapeChar=none', '-oBatchMode=yes', '-l', 'root' ]
110 args.append('-oStrictHostKeyChecking=%s' % tmp)
111 args.append('-oClearAllForwardings=yes')
112 args.append('-oForwardAgent=yes')
115 if qa_config.options.dry_run:
120 args.append(prefix + cmd)
122 print 'SSH:', utils.ShellQuoteArgs(args)
127 def StartSSH(node, cmd, strict=True):
131 return subprocess.Popen(GetSSHCommand(node, cmd, strict=strict),
135 def GetCommandOutput(node, cmd):
136 """Returns the output of a command executed on the given node.
139 p = subprocess.Popen(GetSSHCommand(node, cmd),
140 shell=False, stdout=subprocess.PIPE)
141 AssertEqual(p.wait(), 0)
142 return p.stdout.read()
145 def UploadFile(node, src):
146 """Uploads a file to a node and returns the filename.
148 Caller needs to remove the returned file on the node when it's not needed
151 # Make sure nobody else has access to it while preserving local permissions
152 mode = os.stat(src).st_mode & 0700
154 cmd = ('tmp=$(tempfile --mode %o --prefix gnt) && '
155 '[[ -f "${tmp}" ]] && '
157 'echo "${tmp}"') % mode
161 p = subprocess.Popen(GetSSHCommand(node, cmd), shell=False, stdin=f,
162 stdout=subprocess.PIPE)
163 AssertEqual(p.wait(), 0)
165 # Return temporary filename
166 return p.stdout.read().strip()
171 def _ResolveName(cmd, key):
175 master = qa_config.GetMasterNode()
177 output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
178 for line in output.splitlines():
179 (lkey, lvalue) = line.split(':', 1)
181 return lvalue.lstrip()
182 raise KeyError("Key not found")
185 def ResolveInstanceName(instance):
186 """Gets the full name of an instance.
189 return _ResolveName(['gnt-instance', 'info', instance['name']],
193 def ResolveNodeName(node):
194 """Gets the full name of a node.
197 return _ResolveName(['gnt-node', 'info', node['primary']],
201 def GetNodeInstances(node, secondaries=False):
202 """Gets a list of instances on a node.
205 master = qa_config.GetMasterNode()
206 node_name = ResolveNodeName(node)
208 # Get list of all instances
209 cmd = ['gnt-instance', 'list', '--separator=:', '--no-headers',
210 '--output=name,pnode,snodes']
211 output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
214 for line in output.splitlines():
215 (name, pnode, snodes) = line.split(':', 2)
216 if ((not secondaries and pnode == node_name) or
217 (secondaries and node_name in snodes.split(','))):
218 instances.append(name)
223 def _FormatWithColor(text, seq):
226 return "%s%s%s" % (seq, text, _RESET_SEQ)
229 FormatWarning = lambda text: _FormatWithColor(text, _WARNING_SEQ)
230 FormatError = lambda text: _FormatWithColor(text, _ERROR_SEQ)
231 FormatInfo = lambda text: _FormatWithColor(text, _INFO_SEQ)