#
#
-# Copyright (C) 2007 Google Inc.
+# Copyright (C) 2007, 2011, 2012, 2013 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
import re
import sys
import subprocess
+import random
+import tempfile
+
+try:
+ import functools
+except ImportError, err:
+ raise ImportError("Python 2.5 or higher is required: %s" % err)
from ganeti import utils
+from ganeti import compat
+from ganeti import constants
+from ganeti import ht
+from ganeti import pathutils
import qa_config
import qa_error
_ERROR_SEQ = None
_RESET_SEQ = None
+_MULTIPLEXERS = {}
+
+#: Unique ID per QA run
+_RUN_UUID = utils.NewUUID()
+
+#: Path to the QA query output log file
+_QA_OUTPUT = pathutils.GetLogFilename("qa-output")
+
+
+(INST_DOWN,
+ INST_UP) = range(500, 502)
+
+(FIRST_ARG,
+ RETURN_VALUE) = range(1000, 1002)
+
def _SetupColours():
"""Initializes the colour constants.
"""
+ # pylint: disable=W0603
+ # due to global usage
global _INFO_SEQ, _WARNING_SEQ, _ERROR_SEQ, _RESET_SEQ
# Don't use colours if stdout isn't a terminal
"""
if item not in sequence:
- raise qa_error.Error('%r not in %r' % (item, sequence))
+ raise qa_error.Error("%r not in %r" % (item, sequence))
-def AssertEqual(first, second):
- """Raises an error when values aren't equal.
+def AssertNotIn(item, sequence):
+ """Raises an error when item is in sequence.
"""
- if not first == second:
- raise qa_error.Error('%r == %r' % (first, second))
+ if item in sequence:
+ raise qa_error.Error("%r in %r" % (item, sequence))
-def AssertNotEqual(first, second):
- """Raises an error when values are equal.
+def AssertEqual(first, second):
+ """Raises an error when values aren't equal.
"""
- if not first != second:
- raise qa_error.Error('%r != %r' % (first, second))
+ if not first == second:
+ raise qa_error.Error("%r == %r" % (first, second))
def AssertMatch(string, pattern):
raise qa_error.Error("%r doesn't match /%r/" % (string, pattern))
-def GetSSHCommand(node, cmd, strict=True):
+def _GetName(entity, key):
+ """Tries to get name of an entity.
+
+ @type entity: string or dict
+ @type key: string
+ @param key: Dictionary key containing name
+
+ """
+ if isinstance(entity, basestring):
+ result = entity
+ elif isinstance(entity, dict):
+ result = entity[key]
+ else:
+ raise qa_error.Error("Expected string or dictionary, got %s: %s" %
+ (type(entity), entity))
+
+ if not ht.TNonEmptyString(result):
+ raise Exception("Invalid name '%s'" % result)
+
+ return result
+
+
+def _AssertRetCode(rcode, fail, cmdstr, nodename):
+ """Check the return value from a command and possibly raise an exception.
+
+ """
+ if fail and rcode == 0:
+ raise qa_error.Error("Command '%s' on node %s was expected to fail but"
+ " didn't" % (cmdstr, nodename))
+ elif not fail and rcode != 0:
+ raise qa_error.Error("Command '%s' on node %s failed, exit code %s" %
+ (cmdstr, nodename, rcode))
+
+
+def AssertCommand(cmd, fail=False, node=None, log_cmd=True):
+ """Checks that a remote command succeeds.
+
+ @param cmd: either a string (the command to execute) or a list (to
+ be converted using L{utils.ShellQuoteArgs} into a string)
+ @type fail: boolean
+ @param fail: if the command is expected to fail instead of succeeding
+ @param node: if passed, it should be the node on which the command
+ should be executed, instead of the master node (can be either a
+ dict or a string)
+ @param log_cmd: if False, the command won't be logged (simply passed to
+ StartSSH)
+ @return: the return code of the command
+ @raise qa_error.Error: if the command fails when it shouldn't or vice versa
+
+ """
+ if node is None:
+ node = qa_config.GetMasterNode()
+
+ nodename = _GetName(node, "primary")
+
+ if isinstance(cmd, basestring):
+ cmdstr = cmd
+ else:
+ cmdstr = utils.ShellQuoteArgs(cmd)
+
+ rcode = StartSSH(nodename, cmdstr, log_cmd=log_cmd).wait()
+ _AssertRetCode(rcode, fail, cmdstr, nodename)
+
+ return rcode
+
+
+def AssertRedirectedCommand(cmd, fail=False, node=None, log_cmd=True):
+ """Executes a command with redirected output.
+
+ The log will go to the qa-output log file in the ganeti log
+ directory on the node where the command is executed. The fail and
+ node parameters are passed unchanged to AssertCommand.
+
+ @param cmd: the command to be executed, as a list; a string is not
+ supported
+
+ """
+ if not isinstance(cmd, list):
+ raise qa_error.Error("Non-list passed to AssertRedirectedCommand")
+ ofile = utils.ShellQuote(_QA_OUTPUT)
+ cmdstr = utils.ShellQuoteArgs(cmd)
+ AssertCommand("echo ---- $(date) %s ---- >> %s" % (cmdstr, ofile),
+ fail=False, node=node, log_cmd=False)
+ return AssertCommand(cmdstr + " >> %s" % ofile,
+ fail=fail, node=node, log_cmd=log_cmd)
+
+
+def GetSSHCommand(node, cmd, strict=True, opts=None, tty=None):
"""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
+ @type node: string
+ @param node: node the command should run on
+ @type cmd: string
+ @param cmd: command to be executed in the node; if None or empty
+ string, no command will be executed
+ @type strict: boolean
+ @param strict: whether to enable strict host key checking
+ @type opts: list
+ @param opts: list of additional options
+ @type tty: boolean or None
+ @param tty: if we should use tty; if None, will be auto-detected
"""
- args = [ 'ssh', '-oEscapeChar=none', '-oBatchMode=yes', '-l', 'root', '-t' ]
+ args = ["ssh", "-oEscapeChar=none", "-oBatchMode=yes", "-lroot"]
+
+ if tty is None:
+ tty = sys.stdout.isatty()
+
+ if tty:
+ args.append("-t")
if strict:
- tmp = 'yes'
+ tmp = "yes"
else:
- tmp = 'no'
- args.append('-oStrictHostKeyChecking=%s' % tmp)
- args.append('-oClearAllForwardings=yes')
- args.append('-oForwardAgent=yes')
+ tmp = "no"
+ args.append("-oStrictHostKeyChecking=%s" % tmp)
+ args.append("-oClearAllForwardings=yes")
+ args.append("-oForwardAgent=yes")
+ if opts:
+ args.extend(opts)
+ if node in _MULTIPLEXERS:
+ spath = _MULTIPLEXERS[node][0]
+ args.append("-oControlPath=%s" % spath)
+ args.append("-oControlMaster=no")
args.append(node)
- args.append(cmd)
-
- print 'SSH:', utils.ShellQuoteArgs(args)
+ if cmd:
+ args.append(cmd)
return args
-def StartSSH(node, cmd, strict=True):
+def StartLocalCommand(cmd, _nolog_opts=False, log_cmd=True, **kwargs):
+ """Starts a local command.
+
+ """
+ if log_cmd:
+ if _nolog_opts:
+ pcmd = [i for i in cmd if not i.startswith("-")]
+ else:
+ pcmd = cmd
+ print "Command: %s" % utils.ShellQuoteArgs(pcmd)
+ return subprocess.Popen(cmd, shell=False, **kwargs)
+
+
+def StartSSH(node, cmd, strict=True, log_cmd=True):
"""Starts SSH.
"""
- return subprocess.Popen(GetSSHCommand(node, cmd, strict=strict),
- shell=False)
+ return StartLocalCommand(GetSSHCommand(node, cmd, strict=strict),
+ _nolog_opts=True, log_cmd=log_cmd)
+
+
+def StartMultiplexer(node):
+ """Starts a multiplexer command.
+
+ @param node: the node for which to open the multiplexer
+
+ """
+ if node in _MULTIPLEXERS:
+ return
+
+ # Note: yes, we only need mktemp, since we'll remove the file anyway
+ sname = tempfile.mktemp(prefix="ganeti-qa-multiplexer.")
+ utils.RemoveFile(sname)
+ opts = ["-N", "-oControlPath=%s" % sname, "-oControlMaster=yes"]
+ print "Created socket at %s" % sname
+ child = StartLocalCommand(GetSSHCommand(node, None, opts=opts))
+ _MULTIPLEXERS[node] = (sname, child)
-def GetCommandOutput(node, cmd):
+def CloseMultiplexers():
+ """Closes all current multiplexers and cleans up.
+
+ """
+ for node in _MULTIPLEXERS.keys():
+ (sname, child) = _MULTIPLEXERS.pop(node)
+ utils.KillProcess(child.pid, timeout=10, waitpid=True)
+ utils.RemoveFile(sname)
+
+
+def GetCommandOutput(node, cmd, tty=None, fail=False):
"""Returns the output of a command executed on the given node.
+ @type node: string
+ @param node: node the command should run on
+ @type cmd: string
+ @param cmd: command to be executed in the node (cannot be empty or None)
+ @type tty: bool or None
+ @param tty: if we should use tty; if None, it will be auto-detected
+ @type fail: bool
+ @param fail: whether the command is expected to fail
"""
- p = subprocess.Popen(GetSSHCommand(node, cmd),
- shell=False, stdout=subprocess.PIPE)
- AssertEqual(p.wait(), 0)
+ assert cmd
+ p = StartLocalCommand(GetSSHCommand(node, cmd, tty=tty),
+ stdout=subprocess.PIPE)
+ rcode = p.wait()
+ _AssertRetCode(rcode, fail, cmd, node)
return p.stdout.read()
Caller needs to remove the returned file on the node when it's not needed
anymore.
+
"""
# Make sure nobody else has access to it while preserving local permissions
mode = os.stat(src).st_mode & 0700
'cat > "${tmp}" && '
'echo "${tmp}"') % mode
- f = open(src, 'r')
+ f = open(src, "r")
try:
p = subprocess.Popen(GetSSHCommand(node, cmd), shell=False, stdin=f,
stdout=subprocess.PIPE)
f.close()
+def UploadData(node, data, mode=0600, filename=None):
+ """Uploads data to a node and returns the filename.
+
+ Caller needs to remove the returned file on the node when it's not needed
+ anymore.
+
+ """
+ if filename:
+ tmp = "tmp=%s" % utils.ShellQuote(filename)
+ else:
+ tmp = "tmp=$(tempfile --mode %o --prefix gnt)" % mode
+ cmd = ("%s && "
+ "[[ -f \"${tmp}\" ]] && "
+ "cat > \"${tmp}\" && "
+ "echo \"${tmp}\"") % tmp
+
+ p = subprocess.Popen(GetSSHCommand(node, cmd), shell=False,
+ stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+ p.stdin.write(data)
+ p.stdin.close()
+ AssertEqual(p.wait(), 0)
+
+ # Return temporary filename
+ return p.stdout.read().strip()
+
+
+def BackupFile(node, path):
+ """Creates a backup of a file on the node and returns the filename.
+
+ Caller needs to remove the returned file on the node when it's not needed
+ anymore.
+
+ """
+ cmd = ("tmp=$(tempfile --prefix .gnt --directory=$(dirname %s)) && "
+ "[[ -f \"$tmp\" ]] && "
+ "cp %s $tmp && "
+ "echo $tmp") % (utils.ShellQuote(path), utils.ShellQuote(path))
+
+ # Return temporary filename
+ return GetCommandOutput(node, cmd).strip()
+
+
def _ResolveName(cmd, key):
"""Helper function.
"""
master = qa_config.GetMasterNode()
- output = GetCommandOutput(master['primary'], utils.ShellQuoteArgs(cmd))
+ output = GetCommandOutput(master["primary"], utils.ShellQuoteArgs(cmd))
for line in output.splitlines():
- (lkey, lvalue) = line.split(':', 1)
+ (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.
+ @type instance: string
+ @param instance: Instance name
+
"""
- return _ResolveName(['gnt-instance', 'info', instance['name']],
- 'Instance name')
+ return _ResolveName(["gnt-instance", "info", instance],
+ "Instance name")
def ResolveNodeName(node):
"""Gets the full name of a node.
"""
- return _ResolveName(['gnt-node', 'info', node['primary']],
- 'Node name')
+ return _ResolveName(["gnt-node", "info", node["primary"]],
+ "Node name")
def GetNodeInstances(node, secondaries=False):
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))
+ 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)
+ (name, pnode, snodes) = line.split(":", 2)
if ((not secondaries and pnode == node_name) or
- (secondaries and node_name in snodes.split(','))):
+ (secondaries and node_name in snodes.split(","))):
instances.append(name)
return instances
+def _SelectQueryFields(rnd, fields):
+ """Generates a list of fields for query tests.
+
+ """
+ # Create copy for shuffling
+ fields = list(fields)
+ rnd.shuffle(fields)
+
+ # Check all fields
+ yield fields
+ yield sorted(fields)
+
+ # Duplicate fields
+ yield fields + fields
+
+ # Check small groups of fields
+ while fields:
+ yield [fields.pop() for _ in range(rnd.randint(2, 10)) if fields]
+
+
+def _List(listcmd, fields, names):
+ """Runs a list command.
+
+ """
+ master = qa_config.GetMasterNode()
+
+ cmd = [listcmd, "list", "--separator=|", "--no-headers",
+ "--output", ",".join(fields)]
+
+ if names:
+ cmd.extend(names)
+
+ return GetCommandOutput(master["primary"],
+ utils.ShellQuoteArgs(cmd)).splitlines()
+
+
+def GenericQueryTest(cmd, fields, namefield="name", test_unknown=True):
+ """Runs a number of tests on query commands.
+
+ @param cmd: Command name
+ @param fields: List of field names
+
+ """
+ rnd = random.Random(hash(cmd))
+
+ fields = list(fields)
+ rnd.shuffle(fields)
+
+ # Test a number of field combinations
+ for testfields in _SelectQueryFields(rnd, fields):
+ AssertRedirectedCommand([cmd, "list", "--output", ",".join(testfields)])
+
+ if namefield is not None:
+ namelist_fn = compat.partial(_List, cmd, [namefield])
+
+ # When no names were requested, the list must be sorted
+ names = namelist_fn(None)
+ AssertEqual(names, utils.NiceSort(names))
+
+ # When requesting specific names, the order must be kept
+ revnames = list(reversed(names))
+ AssertEqual(namelist_fn(revnames), revnames)
+
+ randnames = list(names)
+ rnd.shuffle(randnames)
+ AssertEqual(namelist_fn(randnames), randnames)
+
+ if test_unknown:
+ # Listing unknown items must fail
+ AssertCommand([cmd, "list", "this.name.certainly.does.not.exist"],
+ fail=True)
+
+ # Check exit code for listing unknown field
+ AssertEqual(AssertRedirectedCommand([cmd, "list",
+ "--output=field/does/not/exist"],
+ fail=True),
+ constants.EXIT_UNKNOWN_FIELD)
+
+
+def GenericQueryFieldsTest(cmd, fields):
+ master = qa_config.GetMasterNode()
+
+ # Listing fields
+ AssertRedirectedCommand([cmd, "list-fields"])
+ AssertRedirectedCommand([cmd, "list-fields"] + fields)
+
+ # Check listed fields (all, must be sorted)
+ realcmd = [cmd, "list-fields", "--separator=|", "--no-headers"]
+ output = GetCommandOutput(master["primary"],
+ utils.ShellQuoteArgs(realcmd)).splitlines()
+ AssertEqual([line.split("|", 1)[0] for line in output],
+ utils.NiceSort(fields))
+
+ # Check exit code for listing unknown field
+ AssertEqual(AssertCommand([cmd, "list-fields", "field/does/not/exist"],
+ fail=True),
+ constants.EXIT_UNKNOWN_FIELD)
+
+
def _FormatWithColor(text, seq):
if not seq:
return text
FormatWarning = lambda text: _FormatWithColor(text, _WARNING_SEQ)
FormatError = lambda text: _FormatWithColor(text, _ERROR_SEQ)
FormatInfo = lambda text: _FormatWithColor(text, _INFO_SEQ)
+
+
+def AddToEtcHosts(hostnames):
+ """Adds hostnames to /etc/hosts.
+
+ @param hostnames: List of hostnames first used A records, all other CNAMEs
+
+ """
+ master = qa_config.GetMasterNode()
+ tmp_hosts = UploadData(master["primary"], "", mode=0644)
+
+ data = []
+ for localhost in ("::1", "127.0.0.1"):
+ data.append("%s %s" % (localhost, " ".join(hostnames)))
+
+ try:
+ AssertCommand("{ cat %s && echo -e '%s'; } > %s && mv %s %s" %
+ (utils.ShellQuote(pathutils.ETC_HOSTS),
+ "\\n".join(data),
+ utils.ShellQuote(tmp_hosts),
+ utils.ShellQuote(tmp_hosts),
+ utils.ShellQuote(pathutils.ETC_HOSTS)))
+ except Exception:
+ AssertCommand(["rm", "-f", tmp_hosts])
+ raise
+
+
+def RemoveFromEtcHosts(hostnames):
+ """Remove hostnames from /etc/hosts.
+
+ @param hostnames: List of hostnames first used A records, all other CNAMEs
+
+ """
+ master = qa_config.GetMasterNode()
+ tmp_hosts = UploadData(master["primary"], "", mode=0644)
+ quoted_tmp_hosts = utils.ShellQuote(tmp_hosts)
+
+ sed_data = " ".join(hostnames)
+ try:
+ AssertCommand(("sed -e '/^\(::1\|127\.0\.0\.1\)\s\+%s/d' %s > %s"
+ " && mv %s %s") %
+ (sed_data, utils.ShellQuote(pathutils.ETC_HOSTS),
+ quoted_tmp_hosts, quoted_tmp_hosts,
+ utils.ShellQuote(pathutils.ETC_HOSTS)))
+ except Exception:
+ AssertCommand(["rm", "-f", tmp_hosts])
+ raise
+
+
+def RunInstanceCheck(instance, running):
+ """Check if instance is running or not.
+
+ """
+ instance_name = _GetName(instance, "name")
+
+ script = qa_config.GetInstanceCheckScript()
+ if not script:
+ return
+
+ master_node = qa_config.GetMasterNode()
+
+ # Build command to connect to master node
+ master_ssh = GetSSHCommand(master_node["primary"], "--")
+
+ if running:
+ running_shellval = "1"
+ running_text = ""
+ else:
+ running_shellval = ""
+ running_text = "not "
+
+ print FormatInfo("Checking if instance '%s' is %srunning" %
+ (instance_name, running_text))
+
+ args = [script, instance_name]
+ env = {
+ "PATH": constants.HOOKS_PATH,
+ "RUN_UUID": _RUN_UUID,
+ "MASTER_SSH": utils.ShellQuoteArgs(master_ssh),
+ "INSTANCE_NAME": instance_name,
+ "INSTANCE_RUNNING": running_shellval,
+ }
+
+ result = os.spawnve(os.P_WAIT, script, args, env)
+ if result != 0:
+ raise qa_error.Error("Instance check failed with result %s" % result)
+
+
+def _InstanceCheckInner(expected, instarg, args, result):
+ """Helper function used by L{InstanceCheck}.
+
+ """
+ if instarg == FIRST_ARG:
+ instance = args[0]
+ elif instarg == RETURN_VALUE:
+ instance = result
+ else:
+ raise Exception("Invalid value '%s' for instance argument" % instarg)
+
+ if expected in (INST_DOWN, INST_UP):
+ RunInstanceCheck(instance, (expected == INST_UP))
+ elif expected is not None:
+ raise Exception("Invalid value '%s'" % expected)
+
+
+def InstanceCheck(before, after, instarg):
+ """Decorator to check instance status before and after test.
+
+ @param before: L{INST_DOWN} if instance must be stopped before test,
+ L{INST_UP} if instance must be running before test, L{None} to not check.
+ @param after: L{INST_DOWN} if instance must be stopped after test,
+ L{INST_UP} if instance must be running after test, L{None} to not check.
+ @param instarg: L{FIRST_ARG} to use first argument to test as instance (a
+ dictionary), L{RETURN_VALUE} to use return value (disallows pre-checks)
+
+ """
+ def decorator(fn):
+ @functools.wraps(fn)
+ def wrapper(*args, **kwargs):
+ _InstanceCheckInner(before, instarg, args, NotImplemented)
+
+ result = fn(*args, **kwargs)
+
+ _InstanceCheckInner(after, instarg, args, result)
+
+ return result
+ return wrapper
+ return decorator
+
+
+def GetNonexistentGroups(count):
+ """Gets group names which shouldn't exist on the cluster.
+
+ @param count: Number of groups to get
+ @rtype: list
+
+ """
+ groups = qa_config.get("groups", {})
+
+ default = ["group1", "group2", "group3"]
+ assert count <= len(default)
+
+ candidates = groups.get("inexistent-groups", default)[:count]
+
+ if len(candidates) < count:
+ raise Exception("At least %s non-existent groups are needed" % count)
+
+ return candidates
projects / ganeti-local / blobdiff