+#
+#
+
# Copyright (C) 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
"""
import os
+import sys
import subprocess
from ganeti import utils
import qa_error
-def AssertEqual(first, second, msg=None):
+_INFO_SEQ = None
+_WARNING_SEQ = None
+_ERROR_SEQ = None
+_RESET_SEQ = None
+
+
+# List of all hooks
+_hooks = []
+
+
+def _SetupColours():
+ """Initializes the colour constants.
+
+ """
+ global _INFO_SEQ, _WARNING_SEQ, _ERROR_SEQ, _RESET_SEQ
+
+ # Don't use colours if stdout isn't a terminal
+ if not sys.stdout.isatty():
+ return
+
+ try:
+ import curses
+ except ImportError:
+ # Don't use colours if curses module can't be imported
+ return
+
+ curses.setupterm()
+
+ _RESET_SEQ = curses.tigetstr("op")
+
+ setaf = curses.tigetstr("setaf")
+ _INFO_SEQ = curses.tparm(setaf, curses.COLOR_GREEN)
+ _WARNING_SEQ = curses.tparm(setaf, curses.COLOR_YELLOW)
+ _ERROR_SEQ = curses.tparm(setaf, curses.COLOR_RED)
+
+
+_SetupColours()
+
+
+def AssertEqual(first, second):
"""Raises an error when values aren't equal.
"""
if not first == second:
- raise qa_error.Error(msg or '%r == %r' % (first, second))
+ raise qa_error.Error('%r == %r' % (first, second))
+
+
+def AssertNotEqual(first, second):
+ """Raises an error when values are equal.
+
+ """
+ if not first != second:
+ raise qa_error.Error('%r != %r' % (first, second))
def GetSSHCommand(node, cmd, strict=True):
"""Builds SSH command to be executed.
+ Args:
+ - node: Node the command should run on
+ - cmd: Command to be executed as a list with all parameters
+ - strict: Whether to enable strict host key checking
+
"""
args = [ 'ssh', '-oEscapeChar=none', '-oBatchMode=yes', '-l', 'root' ]
"""Starts SSH.
"""
- args = GetSSHCommand(node, cmd, strict=strict)
- return subprocess.Popen(args, shell=False)
+ return subprocess.Popen(GetSSHCommand(node, cmd, strict=strict),
+ shell=False)
+
+
+def GetCommandOutput(node, cmd):
+ """Returns the output of a command executed on the given node.
+
+ """
+ p = subprocess.Popen(GetSSHCommand(node, cmd),
+ shell=False, stdout=subprocess.PIPE)
+ AssertEqual(p.wait(), 0)
+ return p.stdout.read()
def UploadFile(node, src):
return p.stdout.read().strip()
finally:
f.close()
-# }}}
+
+
+def _ResolveName(cmd, key):
+ """Helper function.
+
+ """
+ master = qa_config.GetMasterNode()
+
+ output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
+ for line in output.splitlines():
+ (lkey, lvalue) = line.split(':', 1)
+ if lkey == key:
+ return lvalue.lstrip()
+ raise KeyError("Key not found")
+
+
+def ResolveInstanceName(instance):
+ """Gets the full name of an instance.
+
+ """
+ return _ResolveName(['gnt-instance', 'info', instance['name']],
+ 'Instance name')
+
+
+def ResolveNodeName(node):
+ """Gets the full name of a node.
+
+ """
+ return _ResolveName(['gnt-node', 'info', node['primary']],
+ 'Node name')
+
+
+def GetNodeInstances(node, secondaries=False):
+ """Gets a list of instances on a node.
+
+ """
+ master = qa_config.GetMasterNode()
+ node_name = ResolveNodeName(node)
+
+ # Get list of all instances
+ cmd = ['gnt-instance', 'list', '--separator=:', '--no-headers',
+ '--output=name,pnode,snodes']
+ output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
+
+ instances = []
+ for line in output.splitlines():
+ (name, pnode, snodes) = line.split(':', 2)
+ if ((not secondaries and pnode == node_name) or
+ (secondaries and node_name in snodes.split(','))):
+ instances.append(name)
+
+ return instances
+
+
+def _FormatWithColor(text, seq):
+ if not seq:
+ return text
+ return "%s%s%s" % (seq, text, _RESET_SEQ)
+
+
+FormatWarning = lambda text: _FormatWithColor(text, _WARNING_SEQ)
+FormatError = lambda text: _FormatWithColor(text, _ERROR_SEQ)
+FormatInfo = lambda text: _FormatWithColor(text, _INFO_SEQ)
+
+
+def LoadHooks():
+ """Load all QA hooks.
+
+ """
+ hooks_dir = qa_config.get('options', {}).get('hooks-dir', None)
+ if not hooks_dir:
+ return
+ if hooks_dir not in sys.path:
+ sys.path.insert(0, hooks_dir)
+ for name in utils.ListVisibleFiles(hooks_dir):
+ if name.endswith('.py'):
+ # Load and instanciate hook
+ print "Loading hook %s" % name
+ _hooks.append(__import__(name[:-3], None, None, ['']).hook())
+
+
+class QaHookContext:
+ """Definition of context passed to hooks.
+
+ """
+ name = None
+ phase = None
+ success = None
+ args = None
+ kwargs = None
+
+
+def _CallHooks(ctx):
+ """Calls all hooks with the given context.
+
+ """
+ if not _hooks:
+ return
+
+ name = "%s-%s" % (ctx.phase, ctx.name)
+ if ctx.success is not None:
+ msg = "%s (success=%s)" % (name, ctx.success)
+ else:
+ msg = name
+ print FormatInfo("Begin %s" % msg)
+ for hook in _hooks:
+ hook.run(ctx)
+ print FormatInfo("End %s" % name)
+
+
+def DefineHook(name):
+ """Wraps a function with calls to hooks.
+
+ Usage: prefix function with @qa_utils.DefineHook(...)
+
+ This is based on PEP 318, "Decorators for Functions and Methods".
+
+ """
+ def wrapper(fn):
+ def new_f(*args, **kwargs):
+ # Create context
+ ctx = QaHookContext()
+ ctx.name = name
+ ctx.phase = 'pre'
+ ctx.args = args
+ ctx.kwargs = kwargs
+
+ _CallHooks(ctx)
+ try:
+ ctx.phase = 'post'
+ ctx.success = True
+ try:
+ # Call real function
+ return fn(*args, **kwargs)
+ except:
+ ctx.success = False
+ raise
+ finally:
+ _CallHooks(ctx)
+
+ # Override function metadata
+ new_f.func_name = fn.func_name
+ new_f.func_doc = fn.func_doc
+
+ return new_f
+
+ return wrapper
projects / ganeti-local / blobdiff