+#
+#
+
# 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
+
+
+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 AssertIn(item, sequence):
+ """Raises an error when item is not in sequence.
+
+ """
+ if item not in sequence:
+ raise qa_error.Error('%r not in %r' % (item, sequence))
+
+
+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' ]
+ args = [ 'ssh', '-oEscapeChar=none', '-oBatchMode=yes', '-l', 'root', '-t' ]
if strict:
tmp = 'yes'
args.append('-oClearAllForwardings=yes')
args.append('-oForwardAgent=yes')
args.append(node)
-
- if qa_config.options.dry_run:
- prefix = 'exit 0; '
- else:
- prefix = ''
-
- args.append(prefix + cmd)
+ args.append(cmd)
print 'SSH:', utils.ShellQuoteArgs(args)
"""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):
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)
- info_cmd = utils.ShellQuoteArgs(['gnt-instance', 'info', instance['name']])
- sed_cmd = utils.ShellQuoteArgs(['sed', '-n', '-e', 's/^Instance name: *//p'])
+ # 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)
- cmd = '%s | %s' % (info_cmd, sed_cmd)
- ssh_cmd = GetSSHCommand(master['primary'], cmd)
- p = subprocess.Popen(ssh_cmd, shell=False, stdout=subprocess.PIPE)
- AssertEqual(p.wait(), 0)
- return p.stdout.read().strip()
+FormatWarning = lambda text: _FormatWithColor(text, _WARNING_SEQ)
+FormatError = lambda text: _FormatWithColor(text, _ERROR_SEQ)
+FormatInfo = lambda text: _FormatWithColor(text, _INFO_SEQ)