1 # Copyright (C) 2007 Google Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 2 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful, but
9 # WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 # General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program; if not, write to the Free Software
15 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 """Utilities for QA tests.
27 from ganeti import utils
44 """Initializes the colour constants.
47 global _INFO_SEQ, _WARNING_SEQ, _ERROR_SEQ, _RESET_SEQ
49 # Don't use colours if stdout isn't a terminal
50 if not sys.stdout.isatty():
56 # Don't use colours if curses module can't be imported
61 _RESET_SEQ = curses.tigetstr("op")
63 setaf = curses.tigetstr("setaf")
64 _INFO_SEQ = curses.tparm(setaf, curses.COLOR_GREEN)
65 _WARNING_SEQ = curses.tparm(setaf, curses.COLOR_YELLOW)
66 _ERROR_SEQ = curses.tparm(setaf, curses.COLOR_RED)
72 def AssertEqual(first, second):
73 """Raises an error when values aren't equal.
76 if not first == second:
77 raise qa_error.Error('%r == %r' % (first, second))
80 def AssertNotEqual(first, second):
81 """Raises an error when values are equal.
84 if not first != second:
85 raise qa_error.Error('%r != %r' % (first, second))
88 def GetSSHCommand(node, cmd, strict=True):
89 """Builds SSH command to be executed.
92 args = [ 'ssh', '-oEscapeChar=none', '-oBatchMode=yes', '-l', 'root' ]
98 args.append('-oStrictHostKeyChecking=%s' % tmp)
99 args.append('-oClearAllForwardings=yes')
100 args.append('-oForwardAgent=yes')
103 if qa_config.options.dry_run:
108 args.append(prefix + cmd)
110 print 'SSH:', utils.ShellQuoteArgs(args)
115 def StartSSH(node, cmd, strict=True):
119 return subprocess.Popen(GetSSHCommand(node, cmd, strict=strict),
123 def GetCommandOutput(node, cmd):
124 """Returns the output of a command executed on the given node.
127 p = subprocess.Popen(GetSSHCommand(node, cmd),
128 shell=False, stdout=subprocess.PIPE)
129 AssertEqual(p.wait(), 0)
130 return p.stdout.read()
133 def UploadFile(node, src):
134 """Uploads a file to a node and returns the filename.
136 Caller needs to remove the returned file on the node when it's not needed
139 # Make sure nobody else has access to it while preserving local permissions
140 mode = os.stat(src).st_mode & 0700
142 cmd = ('tmp=$(tempfile --mode %o --prefix gnt) && '
143 '[[ -f "${tmp}" ]] && '
145 'echo "${tmp}"') % mode
149 p = subprocess.Popen(GetSSHCommand(node, cmd), shell=False, stdin=f,
150 stdout=subprocess.PIPE)
151 AssertEqual(p.wait(), 0)
153 # Return temporary filename
154 return p.stdout.read().strip()
159 def _ResolveName(cmd, key):
163 master = qa_config.GetMasterNode()
165 output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
166 for line in output.splitlines():
167 (lkey, lvalue) = line.split(':', 1)
169 return lvalue.lstrip()
170 raise KeyError("Key not found")
173 def ResolveInstanceName(instance):
174 """Gets the full name of an instance.
177 return _ResolveName(['gnt-instance', 'info', instance['name']],
181 def ResolveNodeName(node):
182 """Gets the full name of a node.
185 return _ResolveName(['gnt-node', 'info', node['primary']],
189 def GetNodeInstances(node, secondaries=False):
190 """Gets a list of instances on a node.
193 master = qa_config.GetMasterNode()
195 node_name = ResolveNodeName(node)
197 # Get list of all instances
198 cmd = ['gnt-instance', 'list', '--separator=:', '--no-headers',
199 '--output=name,pnode,snodes']
200 output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
203 for line in output.splitlines():
204 (name, pnode, snodes) = line.split(':', 2)
205 if ((not secondaries and pnode == node_name) or
206 (secondaries and node_name in snodes.split(','))):
207 instances.append(name)
212 def _FormatWithColor(text, seq):
215 return "%s%s%s" % (seq, text, _RESET_SEQ)
218 FormatWarning = lambda text: _FormatWithColor(text, _WARNING_SEQ)
219 FormatError = lambda text: _FormatWithColor(text, _ERROR_SEQ)
220 FormatInfo = lambda text: _FormatWithColor(text, _INFO_SEQ)
224 """Load all QA hooks.
227 hooks_dir = qa_config.get('options', {}).get('hooks-dir', None)
230 if hooks_dir not in sys.path:
231 sys.path.insert(0, hooks_dir)
232 for name in utils.ListVisibleFiles(hooks_dir):
233 if name.endswith('.py'):
234 # Load and instanciate hook
235 print "Loading hook %s" % name
236 _hooks.append(__import__(name[:-3], None, None, ['']).hook())
248 """Calls all hooks with the given context.
254 name = "%s-%s" % (ctx.phase, ctx.name)
255 if ctx.success is not None:
256 msg = "%s (success=%s)" % (name, ctx.success)
259 print FormatInfo("Begin %s" % msg)
262 print FormatInfo("End %s" % name)
265 def DefineHook(name):
266 """Wraps a function with calls to hooks.
268 Usage: prefix function with @qa_utils.DefineHook(...)
270 This based on PEP 318, "Decorators for Functions and Methods".
274 def new_f(*args, **kwargs):
276 ctx = QaHookContext()
288 return fn(*args, **kwargs)
295 # Override function metadata
296 new_f.func_name = fn.func_name
297 new_f.func_doc = fn.func_doc